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95d49c4
A chapter that was never in the book, and three gates that would have…
shai-almog Sep 2, 2026
40f7eb0
Derive the site's routes instead of guessing them from filenames
shai-almog Sep 2, 2026
7b98f52
Stop inviting contributions the project no longer accepts
shai-almog Sep 2, 2026
5f3841d
Make the ratchets actually ratchet, and honour wildcard redirects
shai-almog Sep 2, 2026
5dbf826
A redirect destination is not proof that a page exists
shai-almog Sep 2, 2026
9275dec
A directory of assets is not a route, and localhost does not do TLS
shai-almog Sep 2, 2026
43ebb5a
Follow a wildcard redirect to its destination instead of trusting the…
shai-almog Sep 2, 2026
0f9a449
Follow literal redirects too, not just wildcard ones
shai-almog Sep 2, 2026
5025f92
Hold manifest entries to chapter level, not just away from part level
shai-almog Sep 2, 2026
2135841
Compute a manifest entry's effective level instead of exempting offsets
shai-almog Sep 2, 2026
b1ec175
Count occurrences, because a file can be wrong about the same thing t…
shai-almog Sep 2, 2026
0e5eda9
Scan container blocks; only literal content is not prose
shai-almog Sep 2, 2026
1f7e69d
Nine of the holes were not holes, and the guide's own routes are enum…
shai-almog Sep 2, 2026
89904a2
Reject a document included twice
shai-almog Sep 2, 2026
5dfb50e
Scope the duplicate-include rule to unconditional manifest entries
shai-almog Sep 2, 2026
7b2b618
A list item is prose, and a conditional entry is still a chapter
shai-almog Sep 2, 2026
e7f885e
Accept TOML alias arrays, and do not demand both branches of a condit…
shai-almog Sep 2, 2026
6364bb4
Move the guard scripts to their own change
shai-almog Sep 2, 2026
945164f
Finish the video capture constraints chapter before publishing it
shai-almog Sep 2, 2026
e113f04
The JavaScript port honoured a quality request and then reported it u…
shai-almog Sep 2, 2026
e68153f
Two support predicates answered before resolving the constraint
shai-almog Sep 2, 2026
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Original file line numberDiff line numberDiff line change
Expand Up@@ -630,6 +630,13 @@ public boolean isSupported() {
///
/// - #preferredQuality(int)
public boolean isQualitySupported() {
// Resolve first. Every getter of a resolved value builds, and so do
// isSizeSupported() and isMaxLengthSupported(); these last two predicates
// did not, so asking one of them FIRST compared the caller's preference
// against a `quality` field the platform had never filled in, and answered
// "unsupported" for a constraint the platform honours. isSupported()
// masked it, because isSizeSupported() runs first and builds.
build();
return preferredQuality == 0 || quality == preferredQuality;
}

Expand All@@ -647,6 +654,8 @@ public boolean isQualitySupported() {
///
/// - #getPreferredMaxFileSize()
public boolean isMaxFileSizeSupported() {
// Resolve first, for the same reason as isQualitySupported() above.
build();
return preferredMaxFileSize == 0 || maxFileSize == preferredMaxFileSize;
}

Expand Down
Original file line numberDiff line numberDiff line change
Expand Up@@ -37,6 +37,11 @@ public VideoCaptureConstraints compile(VideoCaptureConstraints vcc) {
VideoCaptureConstraints out = new VideoCaptureConstraints();
int prefW = vcc.getPreferredWidth();
int prefH = vcc.getPreferredHeight();
// The size this platform uses to express the requested quality, or 0 when the
// caller asked for no quality or pinned the size itself. Kept so the negotiated
// result below can be compared against what the quality actually asked for.
int qualityW = 0;
int qualityH = 0;
if (vcc.getPreferredQuality() != 0 && prefW == 0 && prefH == 0) {
switch (vcc.getPreferredQuality()) {
case VideoCaptureConstraints.QUALITY_LOW:
Expand All@@ -48,12 +53,23 @@ public VideoCaptureConstraints compile(VideoCaptureConstraints vcc) {
prefH = 720;
break;
}
out.preferredQuality(0);
qualityW = prefW;
qualityH = prefH;
}
if (prefW > 0 || prefH > 0) {
MediaResult res = new MediaTool().query(prefW, prefH);
out.preferredWidth(res.getWidth())
.preferredHeight(res.getHeight());
// Report the quality back only when the device actually gave us the size that
// quality maps to. Leaving the resolved quality at 0 unconditionally, as this
// did, made isQualitySupported() answer false for every caller that asked for
// QUALITY_LOW or QUALITY_HIGH -- the resolved value differed from the nonzero
// preferred one -- even though the capture was constrained exactly as asked.
// getUserMedia negotiates, so a device that cannot reach 1280x720 returns
// something smaller, and then the quality genuinely was not honored.
if (qualityW > 0 && res.getWidth() == qualityW && res.getHeight() == qualityH) {
out.preferredQuality(vcc.getPreferredQuality());
Comment thread
shai-almog marked this conversation as resolved.
}
}
out.preferredMaxLength(vcc.getPreferredMaxLength());
return out;
Expand Down
Original file line numberDiff line numberDiff line change
@@ -1,3 +1,25 @@
/*
* Copyright (c) 2026, Codename One and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Codename One designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Codename One through http://www.codenameone.com/ if you
* need additional information or have any questions.
*/
package com.codenameone.developerguide.snippets.generated;

import com.codename1.gpu.*;
Expand DownExpand Up@@ -57,18 +79,18 @@ class ComponentSelectorJava001Snippet {
Resources theme;
void snippet() throws Exception {
// tag::component-selector-java-001[]
// null
// ...

Button slideUp = $(new Button("Slide Up")) //
.setIcon(FontImage.MATERIAL_EXPAND_LESS) //
.addActionListener(e->{ //
$(e) //
.getParent() //
.find(">*") //
.slideUpAndWait(1000) //
.slideDownAndWait(1000); //
Button slideUp = $(new Button("Slide Up")) // <1>
.setIcon(FontImage.MATERIAL_EXPAND_LESS) // <2>
.addActionListener(e->{ // <3>
$(e) // <4>
.getParent() // <5>
.find(">*") // <6>
.slideUpAndWait(1000) // <7>
.slideDownAndWait(1000); // <8>
})
.asComponent(Button.class); //
.asComponent(Button.class); // <9>
// end::component-selector-java-001[]
}
}
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,104 @@
/*
* Copyright (c) 2026, Codename One and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Codename One designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Codename One through http://www.codenameone.com/ if you
* need additional information or have any questions.
*/
package com.codenameone.developerguide.snippets.generated;

import com.codename1.gpu.*;
import com.codename1.ui.*;
import com.codename1.ui.animations.*;
import com.codename1.ui.events.*;
import com.codename1.ui.geom.*;
import com.codename1.ui.layouts.*;
import com.codename1.ui.list.*;
import com.codename1.ui.plaf.*;
import com.codename1.ui.util.*;
import com.codename1.components.*;
import com.codename1.charts.models.*;
import com.codename1.charts.renderers.*;
import com.codename1.charts.views.*;
import com.codename1.capture.*;
import com.codename1.io.*;
import com.codename1.l10n.*;
import com.codename1.location.*;
import com.codename1.maps.*;
import com.codename1.media.*;
import com.codename1.messaging.*;
import com.codename1.payment.*;
import com.codename1.processing.*;
import com.codename1.properties.*;
import com.codename1.push.*;
import com.codename1.security.*;
import com.codename1.social.*;
import com.codename1.ui.spinner.*;
import java.io.*;
import java.util.*;
import static com.codename1.ui.ComponentSelector.$;

class ComponentSelectorJava007Snippet {

Object context;
Object url;
Object value;
Object body;
Object event;
String apiKey = "test-key";
String myHttpsURL = "https://example.com";
java.util.List<String> validKeysList = new java.util.ArrayList<>();
Image myImage;
Graphics graphics;
Graphics g;
GraphicsDevice device;
Form form;
Form hi;
Container cnt;
Container myForm;
Component component;
Button button;
MultiButton myMultiButton;
Label label;
BrowserComponent browserComponent;
Resources theme;
void snippet() throws Exception {
// tag::component-selector-java-007[]
Button replace = $(new Button("Replace Fade/Slide"))
.setIcon(FontImage.MATERIAL_REDEEM)
.addActionListener(e->{
$(e).getParent()
.find(">*") // <1>
.replaceAndWait(c->{ // <2>
return $(new Label("Replacement")) // <3>
.putClientProperty("origComponent", c) // <4>
.asComponent();
}, CommonTransitions.createFade(1000)) // <5>
.replaceAndWait(c->{
Component orig = (Component)c.getClientProperty("origComponent");
if (orig != null) {
c.putClientProperty("origComponent", null);
return orig; // <6>
}
return c;
}, CommonTransitions.createCover(CommonTransitions.SLIDE_HORIZONTAL, false, 1000)); // <7>
})
.asComponent(Button.class);
// end::component-selector-java-007[]
}
}
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,90 @@
/*
* Copyright (c) 2026, Codename One and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Codename One designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Codename One through http://www.codenameone.com/ if you
* need additional information or have any questions.
*/
package com.codenameone.developerguide.snippets.generated;

import com.codename1.gpu.*;
import com.codename1.ui.*;
import com.codename1.ui.animations.*;
import com.codename1.ui.events.*;
import com.codename1.ui.geom.*;
import com.codename1.ui.layouts.*;
import com.codename1.ui.list.*;
import com.codename1.ui.plaf.*;
import com.codename1.ui.util.*;
import com.codename1.components.*;
import com.codename1.charts.models.*;
import com.codename1.charts.renderers.*;
import com.codename1.charts.views.*;
import com.codename1.capture.*;
import com.codename1.io.*;
import com.codename1.l10n.*;
import com.codename1.location.*;
import com.codename1.maps.*;
import com.codename1.media.*;
import com.codename1.messaging.*;
import com.codename1.payment.*;
import com.codename1.processing.*;
import com.codename1.properties.*;
import com.codename1.push.*;
import com.codename1.security.*;
import com.codename1.social.*;
import com.codename1.ui.spinner.*;
import java.io.*;
import java.util.*;


class VideoCaptureConstraintsJava001Snippet {

Object context;
Object url;
Object value;
Object body;
Object event;
String apiKey = "test-key";
String myHttpsURL = "https://example.com";
java.util.List<String> validKeysList = new java.util.ArrayList<>();
Image myImage;
Graphics graphics;
Graphics g;
GraphicsDevice device;
Form form;
Form hi;
Container cnt;
Container myForm;
Component component;
Button button;
MultiButton myMultiButton;
Label label;
BrowserComponent browserComponent;
Resources theme;
void snippet() throws Exception {
// tag::video-capture-constraints-java-001[]
// The original wrote "new VideoCaptureConstraint()" -- a class that does
// not exist. Corrected while restoring it: a snippet that cannot compile is
// worse than no snippet.
VideoCaptureConstraints cnst = new VideoCaptureConstraints()
.preferredQuality(VideoCaptureConstraints.QUALITY_LOW)
.preferredMaxLength(5);
// end::video-capture-constraints-java-001[]
}
}
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,87 @@
/*
* Copyright (c) 2026, Codename One and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Codename One designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Codename One through http://www.codenameone.com/ if you
* need additional information or have any questions.
*/
package com.codenameone.developerguide.snippets.generated;

import com.codename1.gpu.*;
import com.codename1.ui.*;
import com.codename1.ui.animations.*;
import com.codename1.ui.events.*;
import com.codename1.ui.geom.*;
import com.codename1.ui.layouts.*;
import com.codename1.ui.list.*;
import com.codename1.ui.plaf.*;
import com.codename1.ui.util.*;
import com.codename1.components.*;
import com.codename1.charts.models.*;
import com.codename1.charts.renderers.*;
import com.codename1.charts.views.*;
import com.codename1.capture.*;
import com.codename1.io.*;
import com.codename1.l10n.*;
import com.codename1.location.*;
import com.codename1.maps.*;
import com.codename1.media.*;
import com.codename1.messaging.*;
import com.codename1.payment.*;
import com.codename1.processing.*;
import com.codename1.properties.*;
import com.codename1.push.*;
import com.codename1.security.*;
import com.codename1.social.*;
import com.codename1.ui.spinner.*;
import java.io.*;
import java.util.*;


class VideoCaptureConstraintsJava002Snippet {

Object context;
Object url;
Object value;
Object body;
Object event;
String apiKey = "test-key";
String myHttpsURL = "https://example.com";
java.util.List<String> validKeysList = new java.util.ArrayList<>();
Image myImage;
Graphics graphics;
Graphics g;
GraphicsDevice device;
Form form;
Form hi;
Container cnt;
Container myForm;
Component component;
Button button;
MultiButton myMultiButton;
Label label;
BrowserComponent browserComponent;
Resources theme;
VideoCaptureConstraints cnst;

void snippet() throws Exception {
// tag::video-capture-constraints-java-002[]
String videoPath = Capture.captureVideo(cnst);
// end::video-capture-constraints-java-002[]
}
}
Loading
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, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Add copy buttons to all
 blocks\n(function() {\n function addCopyButtons() {\n document.querySelectorAll('pre code').forEach(function(codeBlock) {\n if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;\n codeBlock.parentElement.setAttribute('data-copy-added', 'true');\n \n var btn = document.createElement('button');\n btn.textContent = 'Copy';\n btn.style.cssText = 'position:absolute;top:4px;right:4px;padding:2px 8px;font-size:11px;background:#4ecdc4;border:none;border-radius:4px;color:#1a1a2e;cursor:pointer;opacity:0.7;transition:opacity 0.2s;';\n btn.onmouseover = function() { this.style.opacity = '1'; };\n btn.onmouseout = function() { this.style.opacity = '0.7'; };\n btn.onclick = function() {\n navigator.clipboard.writeText(codeBlock.textContent).then(function() {\n btn.textContent = 'Copied!';\n setTimeout(function() { btn.textContent = 'Copy'; }, 1500);\n });\n };\n codeBlock.parentElement.style.position = 'relative';\n codeBlock.parentElement.appendChild(btn);\n });\n }\n \n addCopyButtons();\n \n // Re-run on dynamic content\n var observer = new MutationObserver(addCopyButtons);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Add Copy Buttons to Code Blocks");
}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '
Skip to content
Merged
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Changes from all commits
Commits
Show all changes
21 commits
Select commit Hold shift + click to select a range
95d49c4
A chapter that was never in the book, and three gates that would have…
shai-almog Sep 2, 2026
40f7eb0
Derive the site's routes instead of guessing them from filenames
shai-almog Sep 2, 2026
7b98f52
Stop inviting contributions the project no longer accepts
shai-almog Sep 2, 2026
5f3841d
Make the ratchets actually ratchet, and honour wildcard redirects
shai-almog Sep 2, 2026
5dbf826
A redirect destination is not proof that a page exists
shai-almog Sep 2, 2026
9275dec
A directory of assets is not a route, and localhost does not do TLS
shai-almog Sep 2, 2026
43ebb5a
Follow a wildcard redirect to its destination instead of trusting the…
shai-almog Sep 2, 2026
0f9a449
Follow literal redirects too, not just wildcard ones
shai-almog Sep 2, 2026
5025f92
Hold manifest entries to chapter level, not just away from part level
shai-almog Sep 2, 2026
2135841
Compute a manifest entry's effective level instead of exempting offsets
shai-almog Sep 2, 2026
b1ec175
Count occurrences, because a file can be wrong about the same thing t…
shai-almog Sep 2, 2026
0e5eda9
Scan container blocks; only literal content is not prose
shai-almog Sep 2, 2026
1f7e69d
Nine of the holes were not holes, and the guide's own routes are enum…
shai-almog Sep 2, 2026
89904a2
Reject a document included twice
shai-almog Sep 2, 2026
5dfb50e
Scope the duplicate-include rule to unconditional manifest entries
shai-almog Sep 2, 2026
7b2b618
A list item is prose, and a conditional entry is still a chapter
shai-almog Sep 2, 2026
e7f885e
Accept TOML alias arrays, and do not demand both branches of a condit…
shai-almog Sep 2, 2026
6364bb4
Move the guard scripts to their own change
shai-almog Sep 2, 2026
945164f
Finish the video capture constraints chapter before publishing it
shai-almog Sep 2, 2026
e113f04
The JavaScript port honoured a quality request and then reported it u…
shai-almog Sep 2, 2026
e68153f
Two support predicates answered before resolving the constraint
shai-almog Sep 2, 2026
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Original file line numberDiff line numberDiff line change
Expand Up@@ -630,6 +630,13 @@ public boolean isSupported() {
///
/// - #preferredQuality(int)
public boolean isQualitySupported() {
// Resolve first. Every getter of a resolved value builds, and so do
// isSizeSupported() and isMaxLengthSupported(); these last two predicates
// did not, so asking one of them FIRST compared the caller's preference
// against a `quality` field the platform had never filled in, and answered
// "unsupported" for a constraint the platform honours. isSupported()
// masked it, because isSizeSupported() runs first and builds.
build();
return preferredQuality == 0 || quality == preferredQuality;
}

Expand All@@ -647,6 +654,8 @@ public boolean isQualitySupported() {
///
/// - #getPreferredMaxFileSize()
public boolean isMaxFileSizeSupported() {
// Resolve first, for the same reason as isQualitySupported() above.
build();
return preferredMaxFileSize == 0 || maxFileSize == preferredMaxFileSize;
}

Expand Down
Original file line numberDiff line numberDiff line change
Expand Up@@ -37,6 +37,11 @@ public VideoCaptureConstraints compile(VideoCaptureConstraints vcc) {
VideoCaptureConstraints out = new VideoCaptureConstraints();
int prefW = vcc.getPreferredWidth();
int prefH = vcc.getPreferredHeight();
// The size this platform uses to express the requested quality, or 0 when the
// caller asked for no quality or pinned the size itself. Kept so the negotiated
// result below can be compared against what the quality actually asked for.
int qualityW = 0;
int qualityH = 0;
if (vcc.getPreferredQuality() != 0 && prefW == 0 && prefH == 0) {
switch (vcc.getPreferredQuality()) {
case VideoCaptureConstraints.QUALITY_LOW:
Expand All@@ -48,12 +53,23 @@ public VideoCaptureConstraints compile(VideoCaptureConstraints vcc) {
prefH = 720;
break;
}
out.preferredQuality(0);
qualityW = prefW;
qualityH = prefH;
}
if (prefW > 0 || prefH > 0) {
MediaResult res = new MediaTool().query(prefW, prefH);
out.preferredWidth(res.getWidth())
.preferredHeight(res.getHeight());
// Report the quality back only when the device actually gave us the size that
// quality maps to. Leaving the resolved quality at 0 unconditionally, as this
// did, made isQualitySupported() answer false for every caller that asked for
// QUALITY_LOW or QUALITY_HIGH -- the resolved value differed from the nonzero
// preferred one -- even though the capture was constrained exactly as asked.
// getUserMedia negotiates, so a device that cannot reach 1280x720 returns
// something smaller, and then the quality genuinely was not honored.
if (qualityW > 0 && res.getWidth() == qualityW && res.getHeight() == qualityH) {
out.preferredQuality(vcc.getPreferredQuality());
Comment thread
shai-almog marked this conversation as resolved.
}
}
out.preferredMaxLength(vcc.getPreferredMaxLength());
return out;
Expand Down
Original file line numberDiff line numberDiff line change
@@ -1,3 +1,25 @@
/*
* Copyright (c) 2026, Codename One and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Codename One designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Codename One through http://www.codenameone.com/ if you
* need additional information or have any questions.
*/
package com.codenameone.developerguide.snippets.generated;

import com.codename1.gpu.*;
Expand DownExpand Up@@ -57,18 +79,18 @@ class ComponentSelectorJava001Snippet {
Resources theme;
void snippet() throws Exception {
// tag::component-selector-java-001[]
// null
// ...

Button slideUp = $(new Button("Slide Up")) //
.setIcon(FontImage.MATERIAL_EXPAND_LESS) //
.addActionListener(e->{ //
$(e) //
.getParent() //
.find(">*") //
.slideUpAndWait(1000) //
.slideDownAndWait(1000); //
Button slideUp = $(new Button("Slide Up")) // <1>
.setIcon(FontImage.MATERIAL_EXPAND_LESS) // <2>
.addActionListener(e->{ // <3>
$(e) // <4>
.getParent() // <5>
.find(">*") // <6>
.slideUpAndWait(1000) // <7>
.slideDownAndWait(1000); // <8>
})
.asComponent(Button.class); //
.asComponent(Button.class); // <9>
// end::component-selector-java-001[]
}
}
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,104 @@
/*
* Copyright (c) 2026, Codename One and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Codename One designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Codename One through http://www.codenameone.com/ if you
* need additional information or have any questions.
*/
package com.codenameone.developerguide.snippets.generated;

import com.codename1.gpu.*;
import com.codename1.ui.*;
import com.codename1.ui.animations.*;
import com.codename1.ui.events.*;
import com.codename1.ui.geom.*;
import com.codename1.ui.layouts.*;
import com.codename1.ui.list.*;
import com.codename1.ui.plaf.*;
import com.codename1.ui.util.*;
import com.codename1.components.*;
import com.codename1.charts.models.*;
import com.codename1.charts.renderers.*;
import com.codename1.charts.views.*;
import com.codename1.capture.*;
import com.codename1.io.*;
import com.codename1.l10n.*;
import com.codename1.location.*;
import com.codename1.maps.*;
import com.codename1.media.*;
import com.codename1.messaging.*;
import com.codename1.payment.*;
import com.codename1.processing.*;
import com.codename1.properties.*;
import com.codename1.push.*;
import com.codename1.security.*;
import com.codename1.social.*;
import com.codename1.ui.spinner.*;
import java.io.*;
import java.util.*;
import static com.codename1.ui.ComponentSelector.$;

class ComponentSelectorJava007Snippet {

Object context;
Object url;
Object value;
Object body;
Object event;
String apiKey = "test-key";
String myHttpsURL = "https://example.com";
java.util.List<String> validKeysList = new java.util.ArrayList<>();
Image myImage;
Graphics graphics;
Graphics g;
GraphicsDevice device;
Form form;
Form hi;
Container cnt;
Container myForm;
Component component;
Button button;
MultiButton myMultiButton;
Label label;
BrowserComponent browserComponent;
Resources theme;
void snippet() throws Exception {
// tag::component-selector-java-007[]
Button replace = $(new Button("Replace Fade/Slide"))
.setIcon(FontImage.MATERIAL_REDEEM)
.addActionListener(e->{
$(e).getParent()
.find(">*") // <1>
.replaceAndWait(c->{ // <2>
return $(new Label("Replacement")) // <3>
.putClientProperty("origComponent", c) // <4>
.asComponent();
}, CommonTransitions.createFade(1000)) // <5>
.replaceAndWait(c->{
Component orig = (Component)c.getClientProperty("origComponent");
if (orig != null) {
c.putClientProperty("origComponent", null);
return orig; // <6>
}
return c;
}, CommonTransitions.createCover(CommonTransitions.SLIDE_HORIZONTAL, false, 1000)); // <7>
})
.asComponent(Button.class);
// end::component-selector-java-007[]
}
}
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,90 @@
/*
* Copyright (c) 2026, Codename One and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Codename One designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Codename One through http://www.codenameone.com/ if you
* need additional information or have any questions.
*/
package com.codenameone.developerguide.snippets.generated;

import com.codename1.gpu.*;
import com.codename1.ui.*;
import com.codename1.ui.animations.*;
import com.codename1.ui.events.*;
import com.codename1.ui.geom.*;
import com.codename1.ui.layouts.*;
import com.codename1.ui.list.*;
import com.codename1.ui.plaf.*;
import com.codename1.ui.util.*;
import com.codename1.components.*;
import com.codename1.charts.models.*;
import com.codename1.charts.renderers.*;
import com.codename1.charts.views.*;
import com.codename1.capture.*;
import com.codename1.io.*;
import com.codename1.l10n.*;
import com.codename1.location.*;
import com.codename1.maps.*;
import com.codename1.media.*;
import com.codename1.messaging.*;
import com.codename1.payment.*;
import com.codename1.processing.*;
import com.codename1.properties.*;
import com.codename1.push.*;
import com.codename1.security.*;
import com.codename1.social.*;
import com.codename1.ui.spinner.*;
import java.io.*;
import java.util.*;


class VideoCaptureConstraintsJava001Snippet {

Object context;
Object url;
Object value;
Object body;
Object event;
String apiKey = "test-key";
String myHttpsURL = "https://example.com";
java.util.List<String> validKeysList = new java.util.ArrayList<>();
Image myImage;
Graphics graphics;
Graphics g;
GraphicsDevice device;
Form form;
Form hi;
Container cnt;
Container myForm;
Component component;
Button button;
MultiButton myMultiButton;
Label label;
BrowserComponent browserComponent;
Resources theme;
void snippet() throws Exception {
// tag::video-capture-constraints-java-001[]
// The original wrote "new VideoCaptureConstraint()" -- a class that does
// not exist. Corrected while restoring it: a snippet that cannot compile is
// worse than no snippet.
VideoCaptureConstraints cnst = new VideoCaptureConstraints()
.preferredQuality(VideoCaptureConstraints.QUALITY_LOW)
.preferredMaxLength(5);
// end::video-capture-constraints-java-001[]
}
}
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,87 @@
/*
* Copyright (c) 2026, Codename One and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Codename One designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Codename One through http://www.codenameone.com/ if you
* need additional information or have any questions.
*/
package com.codenameone.developerguide.snippets.generated;

import com.codename1.gpu.*;
import com.codename1.ui.*;
import com.codename1.ui.animations.*;
import com.codename1.ui.events.*;
import com.codename1.ui.geom.*;
import com.codename1.ui.layouts.*;
import com.codename1.ui.list.*;
import com.codename1.ui.plaf.*;
import com.codename1.ui.util.*;
import com.codename1.components.*;
import com.codename1.charts.models.*;
import com.codename1.charts.renderers.*;
import com.codename1.charts.views.*;
import com.codename1.capture.*;
import com.codename1.io.*;
import com.codename1.l10n.*;
import com.codename1.location.*;
import com.codename1.maps.*;
import com.codename1.media.*;
import com.codename1.messaging.*;
import com.codename1.payment.*;
import com.codename1.processing.*;
import com.codename1.properties.*;
import com.codename1.push.*;
import com.codename1.security.*;
import com.codename1.social.*;
import com.codename1.ui.spinner.*;
import java.io.*;
import java.util.*;


class VideoCaptureConstraintsJava002Snippet {

Object context;
Object url;
Object value;
Object body;
Object event;
String apiKey = "test-key";
String myHttpsURL = "https://example.com";
java.util.List<String> validKeysList = new java.util.ArrayList<>();
Image myImage;
Graphics graphics;
Graphics g;
GraphicsDevice device;
Form form;
Form hi;
Container cnt;
Container myForm;
Component component;
Button button;
MultiButton myMultiButton;
Label label;
BrowserComponent browserComponent;
Resources theme;
VideoCaptureConstraints cnst;

void snippet() throws Exception {
// tag::video-capture-constraints-java-002[]
String videoPath = Capture.captureVideo(cnst);
// end::video-capture-constraints-java-002[]
}
}
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, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Force GitHub README to respect dark mode\n(function() {\n var style = document.createElement('style');\n style.textContent = '\n .markdown-body {\n color-scheme: dark light;\n }\n .markdown-body pre { background: #161b22 !important; }\n .markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }\n .markdown-body table th, .markdown-body table td { border-color: #30363d !important; }\n .markdown-body img { background: #0d1117; }\n .markdown-body blockquote { border-left-color: #8b949e; }\n .markdown-body hr { border-color: #30363d; }\n ';\n document.head.appendChild(style);\n})();", "GitHub Dark Mode README Fix"); } } catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + '
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95d49c4
A chapter that was never in the book, and three gates that would have…
shai-almog Sep 2, 2026
40f7eb0
Derive the site's routes instead of guessing them from filenames
shai-almog Sep 2, 2026
7b98f52
Stop inviting contributions the project no longer accepts
shai-almog Sep 2, 2026
5f3841d
Make the ratchets actually ratchet, and honour wildcard redirects
shai-almog Sep 2, 2026
5dbf826
A redirect destination is not proof that a page exists
shai-almog Sep 2, 2026
9275dec
A directory of assets is not a route, and localhost does not do TLS
shai-almog Sep 2, 2026
43ebb5a
Follow a wildcard redirect to its destination instead of trusting the…
shai-almog Sep 2, 2026
0f9a449
Follow literal redirects too, not just wildcard ones
shai-almog Sep 2, 2026
5025f92
Hold manifest entries to chapter level, not just away from part level
shai-almog Sep 2, 2026
2135841
Compute a manifest entry's effective level instead of exempting offsets
shai-almog Sep 2, 2026
b1ec175
Count occurrences, because a file can be wrong about the same thing t…
shai-almog Sep 2, 2026
0e5eda9
Scan container blocks; only literal content is not prose
shai-almog Sep 2, 2026
1f7e69d
Nine of the holes were not holes, and the guide's own routes are enum…
shai-almog Sep 2, 2026
89904a2
Reject a document included twice
shai-almog Sep 2, 2026
5dfb50e
Scope the duplicate-include rule to unconditional manifest entries
shai-almog Sep 2, 2026
7b2b618
A list item is prose, and a conditional entry is still a chapter
shai-almog Sep 2, 2026
e7f885e
Accept TOML alias arrays, and do not demand both branches of a condit…
shai-almog Sep 2, 2026
6364bb4
Move the guard scripts to their own change
shai-almog Sep 2, 2026
945164f
Finish the video capture constraints chapter before publishing it
shai-almog Sep 2, 2026
e113f04
The JavaScript port honoured a quality request and then reported it u…
shai-almog Sep 2, 2026
e68153f
Two support predicates answered before resolving the constraint
shai-almog Sep 2, 2026
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Original file line numberDiff line numberDiff line change
Expand Up@@ -630,6 +630,13 @@ public boolean isSupported() {
///
/// - #preferredQuality(int)
public boolean isQualitySupported() {
// Resolve first. Every getter of a resolved value builds, and so do
// isSizeSupported() and isMaxLengthSupported(); these last two predicates
// did not, so asking one of them FIRST compared the caller's preference
// against a `quality` field the platform had never filled in, and answered
// "unsupported" for a constraint the platform honours. isSupported()
// masked it, because isSizeSupported() runs first and builds.
build();
return preferredQuality == 0 || quality == preferredQuality;
}

Expand All@@ -647,6 +654,8 @@ public boolean isQualitySupported() {
///
/// - #getPreferredMaxFileSize()
public boolean isMaxFileSizeSupported() {
// Resolve first, for the same reason as isQualitySupported() above.
build();
return preferredMaxFileSize == 0 || maxFileSize == preferredMaxFileSize;
}

Expand Down
Original file line numberDiff line numberDiff line change
Expand Up@@ -37,6 +37,11 @@ public VideoCaptureConstraints compile(VideoCaptureConstraints vcc) {
VideoCaptureConstraints out = new VideoCaptureConstraints();
int prefW = vcc.getPreferredWidth();
int prefH = vcc.getPreferredHeight();
// The size this platform uses to express the requested quality, or 0 when the
// caller asked for no quality or pinned the size itself. Kept so the negotiated
// result below can be compared against what the quality actually asked for.
int qualityW = 0;
int qualityH = 0;
if (vcc.getPreferredQuality() != 0 && prefW == 0 && prefH == 0) {
switch (vcc.getPreferredQuality()) {
case VideoCaptureConstraints.QUALITY_LOW:
Expand All@@ -48,12 +53,23 @@ public VideoCaptureConstraints compile(VideoCaptureConstraints vcc) {
prefH = 720;
break;
}
out.preferredQuality(0);
qualityW = prefW;
qualityH = prefH;
}
if (prefW > 0 || prefH > 0) {
MediaResult res = new MediaTool().query(prefW, prefH);
out.preferredWidth(res.getWidth())
.preferredHeight(res.getHeight());
// Report the quality back only when the device actually gave us the size that
// quality maps to. Leaving the resolved quality at 0 unconditionally, as this
// did, made isQualitySupported() answer false for every caller that asked for
// QUALITY_LOW or QUALITY_HIGH -- the resolved value differed from the nonzero
// preferred one -- even though the capture was constrained exactly as asked.
// getUserMedia negotiates, so a device that cannot reach 1280x720 returns
// something smaller, and then the quality genuinely was not honored.
if (qualityW > 0 && res.getWidth() == qualityW && res.getHeight() == qualityH) {
out.preferredQuality(vcc.getPreferredQuality());
Comment thread
shai-almog marked this conversation as resolved.
}
}
out.preferredMaxLength(vcc.getPreferredMaxLength());
return out;
Expand Down
Original file line numberDiff line numberDiff line change
@@ -1,3 +1,25 @@
/*
* Copyright (c) 2026, Codename One and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Codename One designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Codename One through http://www.codenameone.com/ if you
* need additional information or have any questions.
*/
package com.codenameone.developerguide.snippets.generated;

import com.codename1.gpu.*;
Expand DownExpand Up@@ -57,18 +79,18 @@ class ComponentSelectorJava001Snippet {
Resources theme;
void snippet() throws Exception {
// tag::component-selector-java-001[]
// null
// ...

Button slideUp = $(new Button("Slide Up")) //
.setIcon(FontImage.MATERIAL_EXPAND_LESS) //
.addActionListener(e->{ //
$(e) //
.getParent() //
.find(">*") //
.slideUpAndWait(1000) //
.slideDownAndWait(1000); //
Button slideUp = $(new Button("Slide Up")) // <1>
.setIcon(FontImage.MATERIAL_EXPAND_LESS) // <2>
.addActionListener(e->{ // <3>
$(e) // <4>
.getParent() // <5>
.find(">*") // <6>
.slideUpAndWait(1000) // <7>
.slideDownAndWait(1000); // <8>
})
.asComponent(Button.class); //
.asComponent(Button.class); // <9>
// end::component-selector-java-001[]
}
}
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,104 @@
/*
* Copyright (c) 2026, Codename One and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Codename One designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Codename One through http://www.codenameone.com/ if you
* need additional information or have any questions.
*/
package com.codenameone.developerguide.snippets.generated;

import com.codename1.gpu.*;
import com.codename1.ui.*;
import com.codename1.ui.animations.*;
import com.codename1.ui.events.*;
import com.codename1.ui.geom.*;
import com.codename1.ui.layouts.*;
import com.codename1.ui.list.*;
import com.codename1.ui.plaf.*;
import com.codename1.ui.util.*;
import com.codename1.components.*;
import com.codename1.charts.models.*;
import com.codename1.charts.renderers.*;
import com.codename1.charts.views.*;
import com.codename1.capture.*;
import com.codename1.io.*;
import com.codename1.l10n.*;
import com.codename1.location.*;
import com.codename1.maps.*;
import com.codename1.media.*;
import com.codename1.messaging.*;
import com.codename1.payment.*;
import com.codename1.processing.*;
import com.codename1.properties.*;
import com.codename1.push.*;
import com.codename1.security.*;
import com.codename1.social.*;
import com.codename1.ui.spinner.*;
import java.io.*;
import java.util.*;
import static com.codename1.ui.ComponentSelector.$;

class ComponentSelectorJava007Snippet {

Object context;
Object url;
Object value;
Object body;
Object event;
String apiKey = "test-key";
String myHttpsURL = "https://example.com";
java.util.List<String> validKeysList = new java.util.ArrayList<>();
Image myImage;
Graphics graphics;
Graphics g;
GraphicsDevice device;
Form form;
Form hi;
Container cnt;
Container myForm;
Component component;
Button button;
MultiButton myMultiButton;
Label label;
BrowserComponent browserComponent;
Resources theme;
void snippet() throws Exception {
// tag::component-selector-java-007[]
Button replace = $(new Button("Replace Fade/Slide"))
.setIcon(FontImage.MATERIAL_REDEEM)
.addActionListener(e->{
$(e).getParent()
.find(">*") // <1>
.replaceAndWait(c->{ // <2>
return $(new Label("Replacement")) // <3>
.putClientProperty("origComponent", c) // <4>
.asComponent();
}, CommonTransitions.createFade(1000)) // <5>
.replaceAndWait(c->{
Component orig = (Component)c.getClientProperty("origComponent");
if (orig != null) {
c.putClientProperty("origComponent", null);
return orig; // <6>
}
return c;
}, CommonTransitions.createCover(CommonTransitions.SLIDE_HORIZONTAL, false, 1000)); // <7>
})
.asComponent(Button.class);
// end::component-selector-java-007[]
}
}
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,90 @@
/*
* Copyright (c) 2026, Codename One and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Codename One designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Codename One through http://www.codenameone.com/ if you
* need additional information or have any questions.
*/
package com.codenameone.developerguide.snippets.generated;

import com.codename1.gpu.*;
import com.codename1.ui.*;
import com.codename1.ui.animations.*;
import com.codename1.ui.events.*;
import com.codename1.ui.geom.*;
import com.codename1.ui.layouts.*;
import com.codename1.ui.list.*;
import com.codename1.ui.plaf.*;
import com.codename1.ui.util.*;
import com.codename1.components.*;
import com.codename1.charts.models.*;
import com.codename1.charts.renderers.*;
import com.codename1.charts.views.*;
import com.codename1.capture.*;
import com.codename1.io.*;
import com.codename1.l10n.*;
import com.codename1.location.*;
import com.codename1.maps.*;
import com.codename1.media.*;
import com.codename1.messaging.*;
import com.codename1.payment.*;
import com.codename1.processing.*;
import com.codename1.properties.*;
import com.codename1.push.*;
import com.codename1.security.*;
import com.codename1.social.*;
import com.codename1.ui.spinner.*;
import java.io.*;
import java.util.*;


class VideoCaptureConstraintsJava001Snippet {

Object context;
Object url;
Object value;
Object body;
Object event;
String apiKey = "test-key";
String myHttpsURL = "https://example.com";
java.util.List<String> validKeysList = new java.util.ArrayList<>();
Image myImage;
Graphics graphics;
Graphics g;
GraphicsDevice device;
Form form;
Form hi;
Container cnt;
Container myForm;
Component component;
Button button;
MultiButton myMultiButton;
Label label;
BrowserComponent browserComponent;
Resources theme;
void snippet() throws Exception {
// tag::video-capture-constraints-java-001[]
// The original wrote "new VideoCaptureConstraint()" -- a class that does
// not exist. Corrected while restoring it: a snippet that cannot compile is
// worse than no snippet.
VideoCaptureConstraints cnst = new VideoCaptureConstraints()
.preferredQuality(VideoCaptureConstraints.QUALITY_LOW)
.preferredMaxLength(5);
// end::video-capture-constraints-java-001[]
}
}
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,87 @@
/*
* Copyright (c) 2026, Codename One and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Codename One designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Codename One through http://www.codenameone.com/ if you
* need additional information or have any questions.
*/
package com.codenameone.developerguide.snippets.generated;

import com.codename1.gpu.*;
import com.codename1.ui.*;
import com.codename1.ui.animations.*;
import com.codename1.ui.events.*;
import com.codename1.ui.geom.*;
import com.codename1.ui.layouts.*;
import com.codename1.ui.list.*;
import com.codename1.ui.plaf.*;
import com.codename1.ui.util.*;
import com.codename1.components.*;
import com.codename1.charts.models.*;
import com.codename1.charts.renderers.*;
import com.codename1.charts.views.*;
import com.codename1.capture.*;
import com.codename1.io.*;
import com.codename1.l10n.*;
import com.codename1.location.*;
import com.codename1.maps.*;
import com.codename1.media.*;
import com.codename1.messaging.*;
import com.codename1.payment.*;
import com.codename1.processing.*;
import com.codename1.properties.*;
import com.codename1.push.*;
import com.codename1.security.*;
import com.codename1.social.*;
import com.codename1.ui.spinner.*;
import java.io.*;
import java.util.*;


class VideoCaptureConstraintsJava002Snippet {

Object context;
Object url;
Object value;
Object body;
Object event;
String apiKey = "test-key";
String myHttpsURL = "https://example.com";
java.util.List<String> validKeysList = new java.util.ArrayList<>();
Image myImage;
Graphics graphics;
Graphics g;
GraphicsDevice device;
Form form;
Form hi;
Container cnt;
Container myForm;
Component component;
Button button;
MultiButton myMultiButton;
Label label;
BrowserComponent browserComponent;
Resources theme;
VideoCaptureConstraints cnst;

void snippet() throws Exception {
// tag::video-capture-constraints-java-002[]
String videoPath = Capture.captureVideo(cnst);
// end::video-capture-constraints-java-002[]
}
}
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, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Highlight search terms from Google/DuckDuckGo/Bing referrer\n(function() {\n var ref = document.referrer;\n var terms = [];\n \n if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {\n var url = new URL(ref);\n var q = url.searchParams.get('q') || url.searchParams.get('p');\n if (q) {\n terms = q.split(/\\s+/).filter(function(t) { return t.length > 2; });\n }\n }\n \n if (terms.length === 0) return;\n \n var style = document.createElement('style');\n style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';\n document.head.appendChild(style);\n \n function highlight(node) {\n if (node.nodeType === 3) { // text node\n var text = node.textContent;\n var found = false;\n terms.forEach(function(term) {\n var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\\]\\\\]/g, '\\\\') + ')', 'gi');\n if (regex.test(text)) {\n found = true;\n var frag = document.createDocumentFragment();\n var parts = text.split(regex);\n parts.forEach(function(part, i) {\n if (i % 2 === 0) {\n frag.appendChild(document.createTextNode(part));\n } else {\n var span = document.createElement('span');\n span.className = 'userscript-highlight';\n span.textContent = part;\n frag.appendChild(span);\n }\n });\n node.parentNode.replaceChild(frag, node);\n }\n });\n } else if (node.nodeType === 1 && node.childNodes) { // element\n var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];\n if (!skipTags.includes(node.tagName)) {\n Array.from(node.childNodes).forEach(highlight);\n }\n }\n }\n \n highlight(document.body);\n \n // Re-highlight on dynamic content\n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1 || node.nodeType === 3) highlight(node);\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Highlight Search Terms"); } } catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + '
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95d49c4
A chapter that was never in the book, and three gates that would have…
shai-almog Sep 2, 2026
40f7eb0
Derive the site's routes instead of guessing them from filenames
shai-almog Sep 2, 2026
7b98f52
Stop inviting contributions the project no longer accepts
shai-almog Sep 2, 2026
5f3841d
Make the ratchets actually ratchet, and honour wildcard redirects
shai-almog Sep 2, 2026
5dbf826
A redirect destination is not proof that a page exists
shai-almog Sep 2, 2026
9275dec
A directory of assets is not a route, and localhost does not do TLS
shai-almog Sep 2, 2026
43ebb5a
Follow a wildcard redirect to its destination instead of trusting the…
shai-almog Sep 2, 2026
0f9a449
Follow literal redirects too, not just wildcard ones
shai-almog Sep 2, 2026
5025f92
Hold manifest entries to chapter level, not just away from part level
shai-almog Sep 2, 2026
2135841
Compute a manifest entry's effective level instead of exempting offsets
shai-almog Sep 2, 2026
b1ec175
Count occurrences, because a file can be wrong about the same thing t…
shai-almog Sep 2, 2026
0e5eda9
Scan container blocks; only literal content is not prose
shai-almog Sep 2, 2026
1f7e69d
Nine of the holes were not holes, and the guide's own routes are enum…
shai-almog Sep 2, 2026
89904a2
Reject a document included twice
shai-almog Sep 2, 2026
5dfb50e
Scope the duplicate-include rule to unconditional manifest entries
shai-almog Sep 2, 2026
7b2b618
A list item is prose, and a conditional entry is still a chapter
shai-almog Sep 2, 2026
e7f885e
Accept TOML alias arrays, and do not demand both branches of a condit…
shai-almog Sep 2, 2026
6364bb4
Move the guard scripts to their own change
shai-almog Sep 2, 2026
945164f
Finish the video capture constraints chapter before publishing it
shai-almog Sep 2, 2026
e113f04
The JavaScript port honoured a quality request and then reported it u…
shai-almog Sep 2, 2026
e68153f
Two support predicates answered before resolving the constraint
shai-almog Sep 2, 2026
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Original file line numberDiff line numberDiff line change
Expand Up@@ -630,6 +630,13 @@ public boolean isSupported() {
///
/// - #preferredQuality(int)
public boolean isQualitySupported() {
// Resolve first. Every getter of a resolved value builds, and so do
// isSizeSupported() and isMaxLengthSupported(); these last two predicates
// did not, so asking one of them FIRST compared the caller's preference
// against a `quality` field the platform had never filled in, and answered
// "unsupported" for a constraint the platform honours. isSupported()
// masked it, because isSizeSupported() runs first and builds.
build();
return preferredQuality == 0 || quality == preferredQuality;
}

Expand All@@ -647,6 +654,8 @@ public boolean isQualitySupported() {
///
/// - #getPreferredMaxFileSize()
public boolean isMaxFileSizeSupported() {
// Resolve first, for the same reason as isQualitySupported() above.
build();
return preferredMaxFileSize == 0 || maxFileSize == preferredMaxFileSize;
}

Expand Down
Original file line numberDiff line numberDiff line change
Expand Up@@ -37,6 +37,11 @@ public VideoCaptureConstraints compile(VideoCaptureConstraints vcc) {
VideoCaptureConstraints out = new VideoCaptureConstraints();
int prefW = vcc.getPreferredWidth();
int prefH = vcc.getPreferredHeight();
// The size this platform uses to express the requested quality, or 0 when the
// caller asked for no quality or pinned the size itself. Kept so the negotiated
// result below can be compared against what the quality actually asked for.
int qualityW = 0;
int qualityH = 0;
if (vcc.getPreferredQuality() != 0 && prefW == 0 && prefH == 0) {
switch (vcc.getPreferredQuality()) {
case VideoCaptureConstraints.QUALITY_LOW:
Expand All@@ -48,12 +53,23 @@ public VideoCaptureConstraints compile(VideoCaptureConstraints vcc) {
prefH = 720;
break;
}
out.preferredQuality(0);
qualityW = prefW;
qualityH = prefH;
}
if (prefW > 0 || prefH > 0) {
MediaResult res = new MediaTool().query(prefW, prefH);
out.preferredWidth(res.getWidth())
.preferredHeight(res.getHeight());
// Report the quality back only when the device actually gave us the size that
// quality maps to. Leaving the resolved quality at 0 unconditionally, as this
// did, made isQualitySupported() answer false for every caller that asked for
// QUALITY_LOW or QUALITY_HIGH -- the resolved value differed from the nonzero
// preferred one -- even though the capture was constrained exactly as asked.
// getUserMedia negotiates, so a device that cannot reach 1280x720 returns
// something smaller, and then the quality genuinely was not honored.
if (qualityW > 0 && res.getWidth() == qualityW && res.getHeight() == qualityH) {
out.preferredQuality(vcc.getPreferredQuality());
Comment thread
shai-almog marked this conversation as resolved.
}
}
out.preferredMaxLength(vcc.getPreferredMaxLength());
return out;
Expand Down
Original file line numberDiff line numberDiff line change
@@ -1,3 +1,25 @@
/*
* Copyright (c) 2026, Codename One and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Codename One designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Codename One through http://www.codenameone.com/ if you
* need additional information or have any questions.
*/
package com.codenameone.developerguide.snippets.generated;

import com.codename1.gpu.*;
Expand DownExpand Up@@ -57,18 +79,18 @@ class ComponentSelectorJava001Snippet {
Resources theme;
void snippet() throws Exception {
// tag::component-selector-java-001[]
// null
// ...

Button slideUp = $(new Button("Slide Up")) //
.setIcon(FontImage.MATERIAL_EXPAND_LESS) //
.addActionListener(e->{ //
$(e) //
.getParent() //
.find(">*") //
.slideUpAndWait(1000) //
.slideDownAndWait(1000); //
Button slideUp = $(new Button("Slide Up")) // <1>
.setIcon(FontImage.MATERIAL_EXPAND_LESS) // <2>
.addActionListener(e->{ // <3>
$(e) // <4>
.getParent() // <5>
.find(">*") // <6>
.slideUpAndWait(1000) // <7>
.slideDownAndWait(1000); // <8>
})
.asComponent(Button.class); //
.asComponent(Button.class); // <9>
// end::component-selector-java-001[]
}
}
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,104 @@
/*
* Copyright (c) 2026, Codename One and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Codename One designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Codename One through http://www.codenameone.com/ if you
* need additional information or have any questions.
*/
package com.codenameone.developerguide.snippets.generated;

import com.codename1.gpu.*;
import com.codename1.ui.*;
import com.codename1.ui.animations.*;
import com.codename1.ui.events.*;
import com.codename1.ui.geom.*;
import com.codename1.ui.layouts.*;
import com.codename1.ui.list.*;
import com.codename1.ui.plaf.*;
import com.codename1.ui.util.*;
import com.codename1.components.*;
import com.codename1.charts.models.*;
import com.codename1.charts.renderers.*;
import com.codename1.charts.views.*;
import com.codename1.capture.*;
import com.codename1.io.*;
import com.codename1.l10n.*;
import com.codename1.location.*;
import com.codename1.maps.*;
import com.codename1.media.*;
import com.codename1.messaging.*;
import com.codename1.payment.*;
import com.codename1.processing.*;
import com.codename1.properties.*;
import com.codename1.push.*;
import com.codename1.security.*;
import com.codename1.social.*;
import com.codename1.ui.spinner.*;
import java.io.*;
import java.util.*;
import static com.codename1.ui.ComponentSelector.$;

class ComponentSelectorJava007Snippet {

Object context;
Object url;
Object value;
Object body;
Object event;
String apiKey = "test-key";
String myHttpsURL = "https://example.com";
java.util.List<String> validKeysList = new java.util.ArrayList<>();
Image myImage;
Graphics graphics;
Graphics g;
GraphicsDevice device;
Form form;
Form hi;
Container cnt;
Container myForm;
Component component;
Button button;
MultiButton myMultiButton;
Label label;
BrowserComponent browserComponent;
Resources theme;
void snippet() throws Exception {
// tag::component-selector-java-007[]
Button replace = $(new Button("Replace Fade/Slide"))
.setIcon(FontImage.MATERIAL_REDEEM)
.addActionListener(e->{
$(e).getParent()
.find(">*") // <1>
.replaceAndWait(c->{ // <2>
return $(new Label("Replacement")) // <3>
.putClientProperty("origComponent", c) // <4>
.asComponent();
}, CommonTransitions.createFade(1000)) // <5>
.replaceAndWait(c->{
Component orig = (Component)c.getClientProperty("origComponent");
if (orig != null) {
c.putClientProperty("origComponent", null);
return orig; // <6>
}
return c;
}, CommonTransitions.createCover(CommonTransitions.SLIDE_HORIZONTAL, false, 1000)); // <7>
})
.asComponent(Button.class);
// end::component-selector-java-007[]
}
}
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,90 @@
/*
* Copyright (c) 2026, Codename One and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Codename One designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Codename One through http://www.codenameone.com/ if you
* need additional information or have any questions.
*/
package com.codenameone.developerguide.snippets.generated;

import com.codename1.gpu.*;
import com.codename1.ui.*;
import com.codename1.ui.animations.*;
import com.codename1.ui.events.*;
import com.codename1.ui.geom.*;
import com.codename1.ui.layouts.*;
import com.codename1.ui.list.*;
import com.codename1.ui.plaf.*;
import com.codename1.ui.util.*;
import com.codename1.components.*;
import com.codename1.charts.models.*;
import com.codename1.charts.renderers.*;
import com.codename1.charts.views.*;
import com.codename1.capture.*;
import com.codename1.io.*;
import com.codename1.l10n.*;
import com.codename1.location.*;
import com.codename1.maps.*;
import com.codename1.media.*;
import com.codename1.messaging.*;
import com.codename1.payment.*;
import com.codename1.processing.*;
import com.codename1.properties.*;
import com.codename1.push.*;
import com.codename1.security.*;
import com.codename1.social.*;
import com.codename1.ui.spinner.*;
import java.io.*;
import java.util.*;


class VideoCaptureConstraintsJava001Snippet {

Object context;
Object url;
Object value;
Object body;
Object event;
String apiKey = "test-key";
String myHttpsURL = "https://example.com";
java.util.List<String> validKeysList = new java.util.ArrayList<>();
Image myImage;
Graphics graphics;
Graphics g;
GraphicsDevice device;
Form form;
Form hi;
Container cnt;
Container myForm;
Component component;
Button button;
MultiButton myMultiButton;
Label label;
BrowserComponent browserComponent;
Resources theme;
void snippet() throws Exception {
// tag::video-capture-constraints-java-001[]
// The original wrote "new VideoCaptureConstraint()" -- a class that does
// not exist. Corrected while restoring it: a snippet that cannot compile is
// worse than no snippet.
VideoCaptureConstraints cnst = new VideoCaptureConstraints()
.preferredQuality(VideoCaptureConstraints.QUALITY_LOW)
.preferredMaxLength(5);
// end::video-capture-constraints-java-001[]
}
}
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,87 @@
/*
* Copyright (c) 2026, Codename One and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Codename One designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Codename One through http://www.codenameone.com/ if you
* need additional information or have any questions.
*/
package com.codenameone.developerguide.snippets.generated;

import com.codename1.gpu.*;
import com.codename1.ui.*;
import com.codename1.ui.animations.*;
import com.codename1.ui.events.*;
import com.codename1.ui.geom.*;
import com.codename1.ui.layouts.*;
import com.codename1.ui.list.*;
import com.codename1.ui.plaf.*;
import com.codename1.ui.util.*;
import com.codename1.components.*;
import com.codename1.charts.models.*;
import com.codename1.charts.renderers.*;
import com.codename1.charts.views.*;
import com.codename1.capture.*;
import com.codename1.io.*;
import com.codename1.l10n.*;
import com.codename1.location.*;
import com.codename1.maps.*;
import com.codename1.media.*;
import com.codename1.messaging.*;
import com.codename1.payment.*;
import com.codename1.processing.*;
import com.codename1.properties.*;
import com.codename1.push.*;
import com.codename1.security.*;
import com.codename1.social.*;
import com.codename1.ui.spinner.*;
import java.io.*;
import java.util.*;


class VideoCaptureConstraintsJava002Snippet {

Object context;
Object url;
Object value;
Object body;
Object event;
String apiKey = "test-key";
String myHttpsURL = "https://example.com";
java.util.List<String> validKeysList = new java.util.ArrayList<>();
Image myImage;
Graphics graphics;
Graphics g;
GraphicsDevice device;
Form form;
Form hi;
Container cnt;
Container myForm;
Component component;
Button button;
MultiButton myMultiButton;
Label label;
BrowserComponent browserComponent;
Resources theme;
VideoCaptureConstraints cnst;

void snippet() throws Exception {
// tag::video-capture-constraints-java-002[]
String videoPath = Capture.captureVideo(cnst);
// end::video-capture-constraints-java-002[]
}
}
Loading
Loading
, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Strip utm_, fbclid, gclid, etc. from all links on page\n(function() {\n var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',\n 'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',\n 'ref', 'ref_src', 'source', 'medium', 'campaign'];\n \n function cleanUrl(url) {\n try {\n var u = new URL(url, window.location.origin);\n var changed = false;\n trackingParams.forEach(function(p) {\n if (u.searchParams.has(p)) {\n u.searchParams.delete(p);\n changed = true;\n }\n });\n return changed ? u.toString() : url;\n } catch (e) {\n return url;\n }\n }\n \n function cleanLinks() {\n document.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n \n cleanLinks();\n \n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1) {\n if (node.tagName === 'A') cleanLinks();\n node.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Remove Tracking Parameters from Links"); } } catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); } })(); (function(){ try { var __m = "youtube.com"; var __re = new RegExp('^' + "youtube\\.com" + '
Skip to content
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21 commits
Select commit Hold shift + click to select a range
95d49c4
A chapter that was never in the book, and three gates that would have…
shai-almog Sep 2, 2026
40f7eb0
Derive the site's routes instead of guessing them from filenames
shai-almog Sep 2, 2026
7b98f52
Stop inviting contributions the project no longer accepts
shai-almog Sep 2, 2026
5f3841d
Make the ratchets actually ratchet, and honour wildcard redirects
shai-almog Sep 2, 2026
5dbf826
A redirect destination is not proof that a page exists
shai-almog Sep 2, 2026
9275dec
A directory of assets is not a route, and localhost does not do TLS
shai-almog Sep 2, 2026
43ebb5a
Follow a wildcard redirect to its destination instead of trusting the…
shai-almog Sep 2, 2026
0f9a449
Follow literal redirects too, not just wildcard ones
shai-almog Sep 2, 2026
5025f92
Hold manifest entries to chapter level, not just away from part level
shai-almog Sep 2, 2026
2135841
Compute a manifest entry's effective level instead of exempting offsets
shai-almog Sep 2, 2026
b1ec175
Count occurrences, because a file can be wrong about the same thing t…
shai-almog Sep 2, 2026
0e5eda9
Scan container blocks; only literal content is not prose
shai-almog Sep 2, 2026
1f7e69d
Nine of the holes were not holes, and the guide's own routes are enum…
shai-almog Sep 2, 2026
89904a2
Reject a document included twice
shai-almog Sep 2, 2026
5dfb50e
Scope the duplicate-include rule to unconditional manifest entries
shai-almog Sep 2, 2026
7b2b618
A list item is prose, and a conditional entry is still a chapter
shai-almog Sep 2, 2026
e7f885e
Accept TOML alias arrays, and do not demand both branches of a condit…
shai-almog Sep 2, 2026
6364bb4
Move the guard scripts to their own change
shai-almog Sep 2, 2026
945164f
Finish the video capture constraints chapter before publishing it
shai-almog Sep 2, 2026
e113f04
The JavaScript port honoured a quality request and then reported it u…
shai-almog Sep 2, 2026
e68153f
Two support predicates answered before resolving the constraint
shai-almog Sep 2, 2026
File filter

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Failed to load files.
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Original file line numberDiff line numberDiff line change
Expand Up@@ -630,6 +630,13 @@ public boolean isSupported() {
///
/// - #preferredQuality(int)
public boolean isQualitySupported() {
// Resolve first. Every getter of a resolved value builds, and so do
// isSizeSupported() and isMaxLengthSupported(); these last two predicates
// did not, so asking one of them FIRST compared the caller's preference
// against a `quality` field the platform had never filled in, and answered
// "unsupported" for a constraint the platform honours. isSupported()
// masked it, because isSizeSupported() runs first and builds.
build();
return preferredQuality == 0 || quality == preferredQuality;
}

Expand All@@ -647,6 +654,8 @@ public boolean isQualitySupported() {
///
/// - #getPreferredMaxFileSize()
public boolean isMaxFileSizeSupported() {
// Resolve first, for the same reason as isQualitySupported() above.
build();
return preferredMaxFileSize == 0 || maxFileSize == preferredMaxFileSize;
}

Expand Down
Original file line numberDiff line numberDiff line change
Expand Up@@ -37,6 +37,11 @@ public VideoCaptureConstraints compile(VideoCaptureConstraints vcc) {
VideoCaptureConstraints out = new VideoCaptureConstraints();
int prefW = vcc.getPreferredWidth();
int prefH = vcc.getPreferredHeight();
// The size this platform uses to express the requested quality, or 0 when the
// caller asked for no quality or pinned the size itself. Kept so the negotiated
// result below can be compared against what the quality actually asked for.
int qualityW = 0;
int qualityH = 0;
if (vcc.getPreferredQuality() != 0 && prefW == 0 && prefH == 0) {
switch (vcc.getPreferredQuality()) {
case VideoCaptureConstraints.QUALITY_LOW:
Expand All@@ -48,12 +53,23 @@ public VideoCaptureConstraints compile(VideoCaptureConstraints vcc) {
prefH = 720;
break;
}
out.preferredQuality(0);
qualityW = prefW;
qualityH = prefH;
}
if (prefW > 0 || prefH > 0) {
MediaResult res = new MediaTool().query(prefW, prefH);
out.preferredWidth(res.getWidth())
.preferredHeight(res.getHeight());
// Report the quality back only when the device actually gave us the size that
// quality maps to. Leaving the resolved quality at 0 unconditionally, as this
// did, made isQualitySupported() answer false for every caller that asked for
// QUALITY_LOW or QUALITY_HIGH -- the resolved value differed from the nonzero
// preferred one -- even though the capture was constrained exactly as asked.
// getUserMedia negotiates, so a device that cannot reach 1280x720 returns
// something smaller, and then the quality genuinely was not honored.
if (qualityW > 0 && res.getWidth() == qualityW && res.getHeight() == qualityH) {
out.preferredQuality(vcc.getPreferredQuality());
Comment thread
shai-almog marked this conversation as resolved.
}
}
out.preferredMaxLength(vcc.getPreferredMaxLength());
return out;
Expand Down
Original file line numberDiff line numberDiff line change
@@ -1,3 +1,25 @@
/*
* Copyright (c) 2026, Codename One and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Codename One designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Codename One through http://www.codenameone.com/ if you
* need additional information or have any questions.
*/
package com.codenameone.developerguide.snippets.generated;

import com.codename1.gpu.*;
Expand DownExpand Up@@ -57,18 +79,18 @@ class ComponentSelectorJava001Snippet {
Resources theme;
void snippet() throws Exception {
// tag::component-selector-java-001[]
// null
// ...

Button slideUp = $(new Button("Slide Up")) //
.setIcon(FontImage.MATERIAL_EXPAND_LESS) //
.addActionListener(e->{ //
$(e) //
.getParent() //
.find(">*") //
.slideUpAndWait(1000) //
.slideDownAndWait(1000); //
Button slideUp = $(new Button("Slide Up")) // <1>
.setIcon(FontImage.MATERIAL_EXPAND_LESS) // <2>
.addActionListener(e->{ // <3>
$(e) // <4>
.getParent() // <5>
.find(">*") // <6>
.slideUpAndWait(1000) // <7>
.slideDownAndWait(1000); // <8>
})
.asComponent(Button.class); //
.asComponent(Button.class); // <9>
// end::component-selector-java-001[]
}
}
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,104 @@
/*
* Copyright (c) 2026, Codename One and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Codename One designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Codename One through http://www.codenameone.com/ if you
* need additional information or have any questions.
*/
package com.codenameone.developerguide.snippets.generated;

import com.codename1.gpu.*;
import com.codename1.ui.*;
import com.codename1.ui.animations.*;
import com.codename1.ui.events.*;
import com.codename1.ui.geom.*;
import com.codename1.ui.layouts.*;
import com.codename1.ui.list.*;
import com.codename1.ui.plaf.*;
import com.codename1.ui.util.*;
import com.codename1.components.*;
import com.codename1.charts.models.*;
import com.codename1.charts.renderers.*;
import com.codename1.charts.views.*;
import com.codename1.capture.*;
import com.codename1.io.*;
import com.codename1.l10n.*;
import com.codename1.location.*;
import com.codename1.maps.*;
import com.codename1.media.*;
import com.codename1.messaging.*;
import com.codename1.payment.*;
import com.codename1.processing.*;
import com.codename1.properties.*;
import com.codename1.push.*;
import com.codename1.security.*;
import com.codename1.social.*;
import com.codename1.ui.spinner.*;
import java.io.*;
import java.util.*;
import static com.codename1.ui.ComponentSelector.$;

class ComponentSelectorJava007Snippet {

Object context;
Object url;
Object value;
Object body;
Object event;
String apiKey = "test-key";
String myHttpsURL = "https://example.com";
java.util.List<String> validKeysList = new java.util.ArrayList<>();
Image myImage;
Graphics graphics;
Graphics g;
GraphicsDevice device;
Form form;
Form hi;
Container cnt;
Container myForm;
Component component;
Button button;
MultiButton myMultiButton;
Label label;
BrowserComponent browserComponent;
Resources theme;
void snippet() throws Exception {
// tag::component-selector-java-007[]
Button replace = $(new Button("Replace Fade/Slide"))
.setIcon(FontImage.MATERIAL_REDEEM)
.addActionListener(e->{
$(e).getParent()
.find(">*") // <1>
.replaceAndWait(c->{ // <2>
return $(new Label("Replacement")) // <3>
.putClientProperty("origComponent", c) // <4>
.asComponent();
}, CommonTransitions.createFade(1000)) // <5>
.replaceAndWait(c->{
Component orig = (Component)c.getClientProperty("origComponent");
if (orig != null) {
c.putClientProperty("origComponent", null);
return orig; // <6>
}
return c;
}, CommonTransitions.createCover(CommonTransitions.SLIDE_HORIZONTAL, false, 1000)); // <7>
})
.asComponent(Button.class);
// end::component-selector-java-007[]
}
}
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,90 @@
/*
* Copyright (c) 2026, Codename One and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Codename One designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Codename One through http://www.codenameone.com/ if you
* need additional information or have any questions.
*/
package com.codenameone.developerguide.snippets.generated;

import com.codename1.gpu.*;
import com.codename1.ui.*;
import com.codename1.ui.animations.*;
import com.codename1.ui.events.*;
import com.codename1.ui.geom.*;
import com.codename1.ui.layouts.*;
import com.codename1.ui.list.*;
import com.codename1.ui.plaf.*;
import com.codename1.ui.util.*;
import com.codename1.components.*;
import com.codename1.charts.models.*;
import com.codename1.charts.renderers.*;
import com.codename1.charts.views.*;
import com.codename1.capture.*;
import com.codename1.io.*;
import com.codename1.l10n.*;
import com.codename1.location.*;
import com.codename1.maps.*;
import com.codename1.media.*;
import com.codename1.messaging.*;
import com.codename1.payment.*;
import com.codename1.processing.*;
import com.codename1.properties.*;
import com.codename1.push.*;
import com.codename1.security.*;
import com.codename1.social.*;
import com.codename1.ui.spinner.*;
import java.io.*;
import java.util.*;


class VideoCaptureConstraintsJava001Snippet {

Object context;
Object url;
Object value;
Object body;
Object event;
String apiKey = "test-key";
String myHttpsURL = "https://example.com";
java.util.List<String> validKeysList = new java.util.ArrayList<>();
Image myImage;
Graphics graphics;
Graphics g;
GraphicsDevice device;
Form form;
Form hi;
Container cnt;
Container myForm;
Component component;
Button button;
MultiButton myMultiButton;
Label label;
BrowserComponent browserComponent;
Resources theme;
void snippet() throws Exception {
// tag::video-capture-constraints-java-001[]
// The original wrote "new VideoCaptureConstraint()" -- a class that does
// not exist. Corrected while restoring it: a snippet that cannot compile is
// worse than no snippet.
VideoCaptureConstraints cnst = new VideoCaptureConstraints()
.preferredQuality(VideoCaptureConstraints.QUALITY_LOW)
.preferredMaxLength(5);
// end::video-capture-constraints-java-001[]
}
}
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,87 @@
/*
* Copyright (c) 2026, Codename One and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Codename One designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Codename One through http://www.codenameone.com/ if you
* need additional information or have any questions.
*/
package com.codenameone.developerguide.snippets.generated;

import com.codename1.gpu.*;
import com.codename1.ui.*;
import com.codename1.ui.animations.*;
import com.codename1.ui.events.*;
import com.codename1.ui.geom.*;
import com.codename1.ui.layouts.*;
import com.codename1.ui.list.*;
import com.codename1.ui.plaf.*;
import com.codename1.ui.util.*;
import com.codename1.components.*;
import com.codename1.charts.models.*;
import com.codename1.charts.renderers.*;
import com.codename1.charts.views.*;
import com.codename1.capture.*;
import com.codename1.io.*;
import com.codename1.l10n.*;
import com.codename1.location.*;
import com.codename1.maps.*;
import com.codename1.media.*;
import com.codename1.messaging.*;
import com.codename1.payment.*;
import com.codename1.processing.*;
import com.codename1.properties.*;
import com.codename1.push.*;
import com.codename1.security.*;
import com.codename1.social.*;
import com.codename1.ui.spinner.*;
import java.io.*;
import java.util.*;


class VideoCaptureConstraintsJava002Snippet {

Object context;
Object url;
Object value;
Object body;
Object event;
String apiKey = "test-key";
String myHttpsURL = "https://example.com";
java.util.List<String> validKeysList = new java.util.ArrayList<>();
Image myImage;
Graphics graphics;
Graphics g;
GraphicsDevice device;
Form form;
Form hi;
Container cnt;
Container myForm;
Component component;
Button button;
MultiButton myMultiButton;
Label label;
BrowserComponent browserComponent;
Resources theme;
VideoCaptureConstraints cnst;

void snippet() throws Exception {
// tag::video-capture-constraints-java-002[]
String videoPath = Capture.captureVideo(cnst);
// end::video-capture-constraints-java-002[]
}
}
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, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Auto-enable theater mode on YouTube\n(function() {\n function tryTheater() {\n var btn = document.querySelector('button[aria-label=\"Theater mode\"], ytd-player #player button[title=\"Theater mode\"]');\n if (btn && !btn.classList.contains('activated')) {\n btn.click();\n }\n }\n \n // Try immediately\n tryTheater();\n \n // Try after navigation (SPA)\n var lastUrl = location.href;\n setInterval(function() {\n if (location.href !== lastUrl) {\n lastUrl = location.href;\n setTimeout(tryTheater, 500);\n }\n }, 1000);\n \n // Also try on player load\n var observer = new MutationObserver(tryTheater);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "YouTube Theater Mode Default"); } } catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + '
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95d49c4
A chapter that was never in the book, and three gates that would have…
shai-almog Sep 2, 2026
40f7eb0
Derive the site's routes instead of guessing them from filenames
shai-almog Sep 2, 2026
7b98f52
Stop inviting contributions the project no longer accepts
shai-almog Sep 2, 2026
5f3841d
Make the ratchets actually ratchet, and honour wildcard redirects
shai-almog Sep 2, 2026
5dbf826
A redirect destination is not proof that a page exists
shai-almog Sep 2, 2026
9275dec
A directory of assets is not a route, and localhost does not do TLS
shai-almog Sep 2, 2026
43ebb5a
Follow a wildcard redirect to its destination instead of trusting the…
shai-almog Sep 2, 2026
0f9a449
Follow literal redirects too, not just wildcard ones
shai-almog Sep 2, 2026
5025f92
Hold manifest entries to chapter level, not just away from part level
shai-almog Sep 2, 2026
2135841
Compute a manifest entry's effective level instead of exempting offsets
shai-almog Sep 2, 2026
b1ec175
Count occurrences, because a file can be wrong about the same thing t…
shai-almog Sep 2, 2026
0e5eda9
Scan container blocks; only literal content is not prose
shai-almog Sep 2, 2026
1f7e69d
Nine of the holes were not holes, and the guide's own routes are enum…
shai-almog Sep 2, 2026
89904a2
Reject a document included twice
shai-almog Sep 2, 2026
5dfb50e
Scope the duplicate-include rule to unconditional manifest entries
shai-almog Sep 2, 2026
7b2b618
A list item is prose, and a conditional entry is still a chapter
shai-almog Sep 2, 2026
e7f885e
Accept TOML alias arrays, and do not demand both branches of a condit…
shai-almog Sep 2, 2026
6364bb4
Move the guard scripts to their own change
shai-almog Sep 2, 2026
945164f
Finish the video capture constraints chapter before publishing it
shai-almog Sep 2, 2026
e113f04
The JavaScript port honoured a quality request and then reported it u…
shai-almog Sep 2, 2026
e68153f
Two support predicates answered before resolving the constraint
shai-almog Sep 2, 2026
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Original file line numberDiff line numberDiff line change
Expand Up@@ -630,6 +630,13 @@ public boolean isSupported() {
///
/// - #preferredQuality(int)
public boolean isQualitySupported() {
// Resolve first. Every getter of a resolved value builds, and so do
// isSizeSupported() and isMaxLengthSupported(); these last two predicates
// did not, so asking one of them FIRST compared the caller's preference
// against a `quality` field the platform had never filled in, and answered
// "unsupported" for a constraint the platform honours. isSupported()
// masked it, because isSizeSupported() runs first and builds.
build();
return preferredQuality == 0 || quality == preferredQuality;
}

Expand All@@ -647,6 +654,8 @@ public boolean isQualitySupported() {
///
/// - #getPreferredMaxFileSize()
public boolean isMaxFileSizeSupported() {
// Resolve first, for the same reason as isQualitySupported() above.
build();
return preferredMaxFileSize == 0 || maxFileSize == preferredMaxFileSize;
}

Expand Down
Original file line numberDiff line numberDiff line change
Expand Up@@ -37,6 +37,11 @@ public VideoCaptureConstraints compile(VideoCaptureConstraints vcc) {
VideoCaptureConstraints out = new VideoCaptureConstraints();
int prefW = vcc.getPreferredWidth();
int prefH = vcc.getPreferredHeight();
// The size this platform uses to express the requested quality, or 0 when the
// caller asked for no quality or pinned the size itself. Kept so the negotiated
// result below can be compared against what the quality actually asked for.
int qualityW = 0;
int qualityH = 0;
if (vcc.getPreferredQuality() != 0 && prefW == 0 && prefH == 0) {
switch (vcc.getPreferredQuality()) {
case VideoCaptureConstraints.QUALITY_LOW:
Expand All@@ -48,12 +53,23 @@ public VideoCaptureConstraints compile(VideoCaptureConstraints vcc) {
prefH = 720;
break;
}
out.preferredQuality(0);
qualityW = prefW;
qualityH = prefH;
}
if (prefW > 0 || prefH > 0) {
MediaResult res = new MediaTool().query(prefW, prefH);
out.preferredWidth(res.getWidth())
.preferredHeight(res.getHeight());
// Report the quality back only when the device actually gave us the size that
// quality maps to. Leaving the resolved quality at 0 unconditionally, as this
// did, made isQualitySupported() answer false for every caller that asked for
// QUALITY_LOW or QUALITY_HIGH -- the resolved value differed from the nonzero
// preferred one -- even though the capture was constrained exactly as asked.
// getUserMedia negotiates, so a device that cannot reach 1280x720 returns
// something smaller, and then the quality genuinely was not honored.
if (qualityW > 0 && res.getWidth() == qualityW && res.getHeight() == qualityH) {
out.preferredQuality(vcc.getPreferredQuality());
Comment thread
shai-almog marked this conversation as resolved.
}
}
out.preferredMaxLength(vcc.getPreferredMaxLength());
return out;
Expand Down
Original file line numberDiff line numberDiff line change
@@ -1,3 +1,25 @@
/*
* Copyright (c) 2026, Codename One and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Codename One designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Codename One through http://www.codenameone.com/ if you
* need additional information or have any questions.
*/
package com.codenameone.developerguide.snippets.generated;

import com.codename1.gpu.*;
Expand DownExpand Up@@ -57,18 +79,18 @@ class ComponentSelectorJava001Snippet {
Resources theme;
void snippet() throws Exception {
// tag::component-selector-java-001[]
// null
// ...

Button slideUp = $(new Button("Slide Up")) //
.setIcon(FontImage.MATERIAL_EXPAND_LESS) //
.addActionListener(e->{ //
$(e) //
.getParent() //
.find(">*") //
.slideUpAndWait(1000) //
.slideDownAndWait(1000); //
Button slideUp = $(new Button("Slide Up")) // <1>
.setIcon(FontImage.MATERIAL_EXPAND_LESS) // <2>
.addActionListener(e->{ // <3>
$(e) // <4>
.getParent() // <5>
.find(">*") // <6>
.slideUpAndWait(1000) // <7>
.slideDownAndWait(1000); // <8>
})
.asComponent(Button.class); //
.asComponent(Button.class); // <9>
// end::component-selector-java-001[]
}
}
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,104 @@
/*
* Copyright (c) 2026, Codename One and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Codename One designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Codename One through http://www.codenameone.com/ if you
* need additional information or have any questions.
*/
package com.codenameone.developerguide.snippets.generated;

import com.codename1.gpu.*;
import com.codename1.ui.*;
import com.codename1.ui.animations.*;
import com.codename1.ui.events.*;
import com.codename1.ui.geom.*;
import com.codename1.ui.layouts.*;
import com.codename1.ui.list.*;
import com.codename1.ui.plaf.*;
import com.codename1.ui.util.*;
import com.codename1.components.*;
import com.codename1.charts.models.*;
import com.codename1.charts.renderers.*;
import com.codename1.charts.views.*;
import com.codename1.capture.*;
import com.codename1.io.*;
import com.codename1.l10n.*;
import com.codename1.location.*;
import com.codename1.maps.*;
import com.codename1.media.*;
import com.codename1.messaging.*;
import com.codename1.payment.*;
import com.codename1.processing.*;
import com.codename1.properties.*;
import com.codename1.push.*;
import com.codename1.security.*;
import com.codename1.social.*;
import com.codename1.ui.spinner.*;
import java.io.*;
import java.util.*;
import static com.codename1.ui.ComponentSelector.$;

class ComponentSelectorJava007Snippet {

Object context;
Object url;
Object value;
Object body;
Object event;
String apiKey = "test-key";
String myHttpsURL = "https://example.com";
java.util.List<String> validKeysList = new java.util.ArrayList<>();
Image myImage;
Graphics graphics;
Graphics g;
GraphicsDevice device;
Form form;
Form hi;
Container cnt;
Container myForm;
Component component;
Button button;
MultiButton myMultiButton;
Label label;
BrowserComponent browserComponent;
Resources theme;
void snippet() throws Exception {
// tag::component-selector-java-007[]
Button replace = $(new Button("Replace Fade/Slide"))
.setIcon(FontImage.MATERIAL_REDEEM)
.addActionListener(e->{
$(e).getParent()
.find(">*") // <1>
.replaceAndWait(c->{ // <2>
return $(new Label("Replacement")) // <3>
.putClientProperty("origComponent", c) // <4>
.asComponent();
}, CommonTransitions.createFade(1000)) // <5>
.replaceAndWait(c->{
Component orig = (Component)c.getClientProperty("origComponent");
if (orig != null) {
c.putClientProperty("origComponent", null);
return orig; // <6>
}
return c;
}, CommonTransitions.createCover(CommonTransitions.SLIDE_HORIZONTAL, false, 1000)); // <7>
})
.asComponent(Button.class);
// end::component-selector-java-007[]
}
}
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,90 @@
/*
* Copyright (c) 2026, Codename One and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Codename One designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Codename One through http://www.codenameone.com/ if you
* need additional information or have any questions.
*/
package com.codenameone.developerguide.snippets.generated;

import com.codename1.gpu.*;
import com.codename1.ui.*;
import com.codename1.ui.animations.*;
import com.codename1.ui.events.*;
import com.codename1.ui.geom.*;
import com.codename1.ui.layouts.*;
import com.codename1.ui.list.*;
import com.codename1.ui.plaf.*;
import com.codename1.ui.util.*;
import com.codename1.components.*;
import com.codename1.charts.models.*;
import com.codename1.charts.renderers.*;
import com.codename1.charts.views.*;
import com.codename1.capture.*;
import com.codename1.io.*;
import com.codename1.l10n.*;
import com.codename1.location.*;
import com.codename1.maps.*;
import com.codename1.media.*;
import com.codename1.messaging.*;
import com.codename1.payment.*;
import com.codename1.processing.*;
import com.codename1.properties.*;
import com.codename1.push.*;
import com.codename1.security.*;
import com.codename1.social.*;
import com.codename1.ui.spinner.*;
import java.io.*;
import java.util.*;


class VideoCaptureConstraintsJava001Snippet {

Object context;
Object url;
Object value;
Object body;
Object event;
String apiKey = "test-key";
String myHttpsURL = "https://example.com";
java.util.List<String> validKeysList = new java.util.ArrayList<>();
Image myImage;
Graphics graphics;
Graphics g;
GraphicsDevice device;
Form form;
Form hi;
Container cnt;
Container myForm;
Component component;
Button button;
MultiButton myMultiButton;
Label label;
BrowserComponent browserComponent;
Resources theme;
void snippet() throws Exception {
// tag::video-capture-constraints-java-001[]
// The original wrote "new VideoCaptureConstraint()" -- a class that does
// not exist. Corrected while restoring it: a snippet that cannot compile is
// worse than no snippet.
VideoCaptureConstraints cnst = new VideoCaptureConstraints()
.preferredQuality(VideoCaptureConstraints.QUALITY_LOW)
.preferredMaxLength(5);
// end::video-capture-constraints-java-001[]
}
}
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,87 @@
/*
* Copyright (c) 2026, Codename One and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Codename One designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Codename One through http://www.codenameone.com/ if you
* need additional information or have any questions.
*/
package com.codenameone.developerguide.snippets.generated;

import com.codename1.gpu.*;
import com.codename1.ui.*;
import com.codename1.ui.animations.*;
import com.codename1.ui.events.*;
import com.codename1.ui.geom.*;
import com.codename1.ui.layouts.*;
import com.codename1.ui.list.*;
import com.codename1.ui.plaf.*;
import com.codename1.ui.util.*;
import com.codename1.components.*;
import com.codename1.charts.models.*;
import com.codename1.charts.renderers.*;
import com.codename1.charts.views.*;
import com.codename1.capture.*;
import com.codename1.io.*;
import com.codename1.l10n.*;
import com.codename1.location.*;
import com.codename1.maps.*;
import com.codename1.media.*;
import com.codename1.messaging.*;
import com.codename1.payment.*;
import com.codename1.processing.*;
import com.codename1.properties.*;
import com.codename1.push.*;
import com.codename1.security.*;
import com.codename1.social.*;
import com.codename1.ui.spinner.*;
import java.io.*;
import java.util.*;


class VideoCaptureConstraintsJava002Snippet {

Object context;
Object url;
Object value;
Object body;
Object event;
String apiKey = "test-key";
String myHttpsURL = "https://example.com";
java.util.List<String> validKeysList = new java.util.ArrayList<>();
Image myImage;
Graphics graphics;
Graphics g;
GraphicsDevice device;
Form form;
Form hi;
Container cnt;
Container myForm;
Component component;
Button button;
MultiButton myMultiButton;
Label label;
BrowserComponent browserComponent;
Resources theme;
VideoCaptureConstraints cnst;

void snippet() throws Exception {
// tag::video-capture-constraints-java-002[]
String videoPath = Capture.captureVideo(cnst);
// end::video-capture-constraints-java-002[]
}
}
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, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Remove or un-stick sticky/fixed headers that block content\n(function() {\n function unstick() {\n document.querySelectorAll('header, nav, [role=\"banner\"], .header, .navbar, .sticky, .fixed-top, [style*=\"position: fixed\"], [style*=\"position:sticky\"]').forEach(function(el) {\n if (el.style.position === 'fixed' || el.style.position === 'sticky' || \n getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {\n el.style.position = 'static';\n el.style.top = 'auto';\n el.style.zIndex = 'auto';\n }\n });\n }\n \n unstick();\n \n var observer = new MutationObserver(unstick);\n observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });\n})();", "Kill Sticky Headers"); } } catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + '
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95d49c4
A chapter that was never in the book, and three gates that would have…
shai-almog Sep 2, 2026
40f7eb0
Derive the site's routes instead of guessing them from filenames
shai-almog Sep 2, 2026
7b98f52
Stop inviting contributions the project no longer accepts
shai-almog Sep 2, 2026
5f3841d
Make the ratchets actually ratchet, and honour wildcard redirects
shai-almog Sep 2, 2026
5dbf826
A redirect destination is not proof that a page exists
shai-almog Sep 2, 2026
9275dec
A directory of assets is not a route, and localhost does not do TLS
shai-almog Sep 2, 2026
43ebb5a
Follow a wildcard redirect to its destination instead of trusting the…
shai-almog Sep 2, 2026
0f9a449
Follow literal redirects too, not just wildcard ones
shai-almog Sep 2, 2026
5025f92
Hold manifest entries to chapter level, not just away from part level
shai-almog Sep 2, 2026
2135841
Compute a manifest entry's effective level instead of exempting offsets
shai-almog Sep 2, 2026
b1ec175
Count occurrences, because a file can be wrong about the same thing t…
shai-almog Sep 2, 2026
0e5eda9
Scan container blocks; only literal content is not prose
shai-almog Sep 2, 2026
1f7e69d
Nine of the holes were not holes, and the guide's own routes are enum…
shai-almog Sep 2, 2026
89904a2
Reject a document included twice
shai-almog Sep 2, 2026
5dfb50e
Scope the duplicate-include rule to unconditional manifest entries
shai-almog Sep 2, 2026
7b2b618
A list item is prose, and a conditional entry is still a chapter
shai-almog Sep 2, 2026
e7f885e
Accept TOML alias arrays, and do not demand both branches of a condit…
shai-almog Sep 2, 2026
6364bb4
Move the guard scripts to their own change
shai-almog Sep 2, 2026
945164f
Finish the video capture constraints chapter before publishing it
shai-almog Sep 2, 2026
e113f04
The JavaScript port honoured a quality request and then reported it u…
shai-almog Sep 2, 2026
e68153f
Two support predicates answered before resolving the constraint
shai-almog Sep 2, 2026
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Original file line numberDiff line numberDiff line change
Expand Up@@ -630,6 +630,13 @@ public boolean isSupported() {
///
/// - #preferredQuality(int)
public boolean isQualitySupported() {
// Resolve first. Every getter of a resolved value builds, and so do
// isSizeSupported() and isMaxLengthSupported(); these last two predicates
// did not, so asking one of them FIRST compared the caller's preference
// against a `quality` field the platform had never filled in, and answered
// "unsupported" for a constraint the platform honours. isSupported()
// masked it, because isSizeSupported() runs first and builds.
build();
return preferredQuality == 0 || quality == preferredQuality;
}

Expand All@@ -647,6 +654,8 @@ public boolean isQualitySupported() {
///
/// - #getPreferredMaxFileSize()
public boolean isMaxFileSizeSupported() {
// Resolve first, for the same reason as isQualitySupported() above.
build();
return preferredMaxFileSize == 0 || maxFileSize == preferredMaxFileSize;
}

Expand Down
Original file line numberDiff line numberDiff line change
Expand Up@@ -37,6 +37,11 @@ public VideoCaptureConstraints compile(VideoCaptureConstraints vcc) {
VideoCaptureConstraints out = new VideoCaptureConstraints();
int prefW = vcc.getPreferredWidth();
int prefH = vcc.getPreferredHeight();
// The size this platform uses to express the requested quality, or 0 when the
// caller asked for no quality or pinned the size itself. Kept so the negotiated
// result below can be compared against what the quality actually asked for.
int qualityW = 0;
int qualityH = 0;
if (vcc.getPreferredQuality() != 0 && prefW == 0 && prefH == 0) {
switch (vcc.getPreferredQuality()) {
case VideoCaptureConstraints.QUALITY_LOW:
Expand All@@ -48,12 +53,23 @@ public VideoCaptureConstraints compile(VideoCaptureConstraints vcc) {
prefH = 720;
break;
}
out.preferredQuality(0);
qualityW = prefW;
qualityH = prefH;
}
if (prefW > 0 || prefH > 0) {
MediaResult res = new MediaTool().query(prefW, prefH);
out.preferredWidth(res.getWidth())
.preferredHeight(res.getHeight());
// Report the quality back only when the device actually gave us the size that
// quality maps to. Leaving the resolved quality at 0 unconditionally, as this
// did, made isQualitySupported() answer false for every caller that asked for
// QUALITY_LOW or QUALITY_HIGH -- the resolved value differed from the nonzero
// preferred one -- even though the capture was constrained exactly as asked.
// getUserMedia negotiates, so a device that cannot reach 1280x720 returns
// something smaller, and then the quality genuinely was not honored.
if (qualityW > 0 && res.getWidth() == qualityW && res.getHeight() == qualityH) {
out.preferredQuality(vcc.getPreferredQuality());
Comment thread
shai-almog marked this conversation as resolved.
}
}
out.preferredMaxLength(vcc.getPreferredMaxLength());
return out;
Expand Down
Original file line numberDiff line numberDiff line change
@@ -1,3 +1,25 @@
/*
* Copyright (c) 2026, Codename One and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Codename One designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Codename One through http://www.codenameone.com/ if you
* need additional information or have any questions.
*/
package com.codenameone.developerguide.snippets.generated;

import com.codename1.gpu.*;
Expand DownExpand Up@@ -57,18 +79,18 @@ class ComponentSelectorJava001Snippet {
Resources theme;
void snippet() throws Exception {
// tag::component-selector-java-001[]
// null
// ...

Button slideUp = $(new Button("Slide Up")) //
.setIcon(FontImage.MATERIAL_EXPAND_LESS) //
.addActionListener(e->{ //
$(e) //
.getParent() //
.find(">*") //
.slideUpAndWait(1000) //
.slideDownAndWait(1000); //
Button slideUp = $(new Button("Slide Up")) // <1>
.setIcon(FontImage.MATERIAL_EXPAND_LESS) // <2>
.addActionListener(e->{ // <3>
$(e) // <4>
.getParent() // <5>
.find(">*") // <6>
.slideUpAndWait(1000) // <7>
.slideDownAndWait(1000); // <8>
})
.asComponent(Button.class); //
.asComponent(Button.class); // <9>
// end::component-selector-java-001[]
}
}
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,104 @@
/*
* Copyright (c) 2026, Codename One and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Codename One designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Codename One through http://www.codenameone.com/ if you
* need additional information or have any questions.
*/
package com.codenameone.developerguide.snippets.generated;

import com.codename1.gpu.*;
import com.codename1.ui.*;
import com.codename1.ui.animations.*;
import com.codename1.ui.events.*;
import com.codename1.ui.geom.*;
import com.codename1.ui.layouts.*;
import com.codename1.ui.list.*;
import com.codename1.ui.plaf.*;
import com.codename1.ui.util.*;
import com.codename1.components.*;
import com.codename1.charts.models.*;
import com.codename1.charts.renderers.*;
import com.codename1.charts.views.*;
import com.codename1.capture.*;
import com.codename1.io.*;
import com.codename1.l10n.*;
import com.codename1.location.*;
import com.codename1.maps.*;
import com.codename1.media.*;
import com.codename1.messaging.*;
import com.codename1.payment.*;
import com.codename1.processing.*;
import com.codename1.properties.*;
import com.codename1.push.*;
import com.codename1.security.*;
import com.codename1.social.*;
import com.codename1.ui.spinner.*;
import java.io.*;
import java.util.*;
import static com.codename1.ui.ComponentSelector.$;

class ComponentSelectorJava007Snippet {

Object context;
Object url;
Object value;
Object body;
Object event;
String apiKey = "test-key";
String myHttpsURL = "https://example.com";
java.util.List<String> validKeysList = new java.util.ArrayList<>();
Image myImage;
Graphics graphics;
Graphics g;
GraphicsDevice device;
Form form;
Form hi;
Container cnt;
Container myForm;
Component component;
Button button;
MultiButton myMultiButton;
Label label;
BrowserComponent browserComponent;
Resources theme;
void snippet() throws Exception {
// tag::component-selector-java-007[]
Button replace = $(new Button("Replace Fade/Slide"))
.setIcon(FontImage.MATERIAL_REDEEM)
.addActionListener(e->{
$(e).getParent()
.find(">*") // <1>
.replaceAndWait(c->{ // <2>
return $(new Label("Replacement")) // <3>
.putClientProperty("origComponent", c) // <4>
.asComponent();
}, CommonTransitions.createFade(1000)) // <5>
.replaceAndWait(c->{
Component orig = (Component)c.getClientProperty("origComponent");
if (orig != null) {
c.putClientProperty("origComponent", null);
return orig; // <6>
}
return c;
}, CommonTransitions.createCover(CommonTransitions.SLIDE_HORIZONTAL, false, 1000)); // <7>
})
.asComponent(Button.class);
// end::component-selector-java-007[]
}
}
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,90 @@
/*
* Copyright (c) 2026, Codename One and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Codename One designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Codename One through http://www.codenameone.com/ if you
* need additional information or have any questions.
*/
package com.codenameone.developerguide.snippets.generated;

import com.codename1.gpu.*;
import com.codename1.ui.*;
import com.codename1.ui.animations.*;
import com.codename1.ui.events.*;
import com.codename1.ui.geom.*;
import com.codename1.ui.layouts.*;
import com.codename1.ui.list.*;
import com.codename1.ui.plaf.*;
import com.codename1.ui.util.*;
import com.codename1.components.*;
import com.codename1.charts.models.*;
import com.codename1.charts.renderers.*;
import com.codename1.charts.views.*;
import com.codename1.capture.*;
import com.codename1.io.*;
import com.codename1.l10n.*;
import com.codename1.location.*;
import com.codename1.maps.*;
import com.codename1.media.*;
import com.codename1.messaging.*;
import com.codename1.payment.*;
import com.codename1.processing.*;
import com.codename1.properties.*;
import com.codename1.push.*;
import com.codename1.security.*;
import com.codename1.social.*;
import com.codename1.ui.spinner.*;
import java.io.*;
import java.util.*;


class VideoCaptureConstraintsJava001Snippet {

Object context;
Object url;
Object value;
Object body;
Object event;
String apiKey = "test-key";
String myHttpsURL = "https://example.com";
java.util.List<String> validKeysList = new java.util.ArrayList<>();
Image myImage;
Graphics graphics;
Graphics g;
GraphicsDevice device;
Form form;
Form hi;
Container cnt;
Container myForm;
Component component;
Button button;
MultiButton myMultiButton;
Label label;
BrowserComponent browserComponent;
Resources theme;
void snippet() throws Exception {
// tag::video-capture-constraints-java-001[]
// The original wrote "new VideoCaptureConstraint()" -- a class that does
// not exist. Corrected while restoring it: a snippet that cannot compile is
// worse than no snippet.
VideoCaptureConstraints cnst = new VideoCaptureConstraints()
.preferredQuality(VideoCaptureConstraints.QUALITY_LOW)
.preferredMaxLength(5);
// end::video-capture-constraints-java-001[]
}
}
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,87 @@
/*
* Copyright (c) 2026, Codename One and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Codename One designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Codename One through http://www.codenameone.com/ if you
* need additional information or have any questions.
*/
package com.codenameone.developerguide.snippets.generated;

import com.codename1.gpu.*;
import com.codename1.ui.*;
import com.codename1.ui.animations.*;
import com.codename1.ui.events.*;
import com.codename1.ui.geom.*;
import com.codename1.ui.layouts.*;
import com.codename1.ui.list.*;
import com.codename1.ui.plaf.*;
import com.codename1.ui.util.*;
import com.codename1.components.*;
import com.codename1.charts.models.*;
import com.codename1.charts.renderers.*;
import com.codename1.charts.views.*;
import com.codename1.capture.*;
import com.codename1.io.*;
import com.codename1.l10n.*;
import com.codename1.location.*;
import com.codename1.maps.*;
import com.codename1.media.*;
import com.codename1.messaging.*;
import com.codename1.payment.*;
import com.codename1.processing.*;
import com.codename1.properties.*;
import com.codename1.push.*;
import com.codename1.security.*;
import com.codename1.social.*;
import com.codename1.ui.spinner.*;
import java.io.*;
import java.util.*;


class VideoCaptureConstraintsJava002Snippet {

Object context;
Object url;
Object value;
Object body;
Object event;
String apiKey = "test-key";
String myHttpsURL = "https://example.com";
java.util.List<String> validKeysList = new java.util.ArrayList<>();
Image myImage;
Graphics graphics;
Graphics g;
GraphicsDevice device;
Form form;
Form hi;
Container cnt;
Container myForm;
Component component;
Button button;
MultiButton myMultiButton;
Label label;
BrowserComponent browserComponent;
Resources theme;
VideoCaptureConstraints cnst;

void snippet() throws Exception {
// tag::video-capture-constraints-java-002[]
String videoPath = Capture.captureVideo(cnst);
// end::video-capture-constraints-java-002[]
}
}
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, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Universal Dark Mode - works on any site\n(function() {\n var enabled = true;\n \n function applyDarkMode() {\n if (!enabled) return;\n \n // Create style element if it doesn't exist\n var style = document.getElementById('universal-dark-mode-style');\n if (!style) {\n style = document.createElement('style');\n style.id = 'universal-dark-mode-style';\n document.head.appendChild(style);\n }\n \n // Dark mode CSS - inverts colors but preserves images/video\n style.textContent = '\n /* Invert everything except media */\n html {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #1a1a2e !important;\n }\n \n /* Restore images, videos, iframes, canvas */\n img, video, iframe, canvas, svg, picture, [style*=\"background-image\"] {\n filter: invert(1) hue-rotate(180deg) !important;\n }\n \n /* Preserve specific elements that should not be inverted */\n .no-dark-mode, .no-dark-mode *,\n [data-theme=\"light\"], [data-theme=\"light\"],\n .ace_editor, .ace_editor *,\n .CodeMirror, .CodeMirror *,\n .monaco-editor, .monaco-editor *,\n .markdown-body pre, .markdown-body pre *,\n .highlight, .highlight *,\n pre code, pre code * {\n filter: none !important;\n }\n \n /* Fix common UI elements */\n .modal, .popup, .dropdown-menu, .tooltip, .popover {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #2d2d44 !important;\n border-color: #444 !important;\n }\n \n /* Scrollbars */\n ::-webkit-scrollbar { background: #1a1a2e !important; }\n ::-webkit-scrollbar-thumb { background: #444 !important; }\n ::-webkit-scrollbar-thumb:hover { background: #555 !important; }\n \n /* Selection */\n ::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ';\n }\n \n function removeDarkMode() {\n var style = document.getElementById('universal-dark-mode-style');\n if (style) style.remove();\n }\n \n // Toggle with Alt+Shift+D\n document.addEventListener('keydown', function(e) {\n if (e.altKey && e.shiftKey && e.key === 'D') {\n e.preventDefault();\n enabled = !enabled;\n if (enabled) {\n applyDarkMode();\n console.log('[Universal Dark Mode] Enabled');\n } else {\n removeDarkMode();\n console.log('[Universal Dark Mode] Disabled');\n }\n }\n });\n \n // Apply on load\n applyDarkMode();\n \n // Re-apply on dynamic content\n var observer = new MutationObserver(function(mutations) {\n if (enabled && !document.getElementById('universal-dark-mode-style')) {\n applyDarkMode();\n }\n });\n observer.observe(document.head, { childList: true });\n \n console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');\n})();", "Universal Dark Mode"); } } catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); } })(); })();
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95d49c4
A chapter that was never in the book, and three gates that would have…
shai-almog Sep 2, 2026
40f7eb0
Derive the site's routes instead of guessing them from filenames
shai-almog Sep 2, 2026
7b98f52
Stop inviting contributions the project no longer accepts
shai-almog Sep 2, 2026
5f3841d
Make the ratchets actually ratchet, and honour wildcard redirects
shai-almog Sep 2, 2026
5dbf826
A redirect destination is not proof that a page exists
shai-almog Sep 2, 2026
9275dec
A directory of assets is not a route, and localhost does not do TLS
shai-almog Sep 2, 2026
43ebb5a
Follow a wildcard redirect to its destination instead of trusting the…
shai-almog Sep 2, 2026
0f9a449
Follow literal redirects too, not just wildcard ones
shai-almog Sep 2, 2026
5025f92
Hold manifest entries to chapter level, not just away from part level
shai-almog Sep 2, 2026
2135841
Compute a manifest entry's effective level instead of exempting offsets
shai-almog Sep 2, 2026
b1ec175
Count occurrences, because a file can be wrong about the same thing t…
shai-almog Sep 2, 2026
0e5eda9
Scan container blocks; only literal content is not prose
shai-almog Sep 2, 2026
1f7e69d
Nine of the holes were not holes, and the guide's own routes are enum…
shai-almog Sep 2, 2026
89904a2
Reject a document included twice
shai-almog Sep 2, 2026
5dfb50e
Scope the duplicate-include rule to unconditional manifest entries
shai-almog Sep 2, 2026
7b2b618
A list item is prose, and a conditional entry is still a chapter
shai-almog Sep 2, 2026
e7f885e
Accept TOML alias arrays, and do not demand both branches of a condit…
shai-almog Sep 2, 2026
6364bb4
Move the guard scripts to their own change
shai-almog Sep 2, 2026
945164f
Finish the video capture constraints chapter before publishing it
shai-almog Sep 2, 2026
e113f04
The JavaScript port honoured a quality request and then reported it u…
shai-almog Sep 2, 2026
e68153f
Two support predicates answered before resolving the constraint
shai-almog Sep 2, 2026
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Original file line numberDiff line numberDiff line change
Expand Up@@ -630,6 +630,13 @@ public boolean isSupported() {
///
/// - #preferredQuality(int)
public boolean isQualitySupported() {
// Resolve first. Every getter of a resolved value builds, and so do
// isSizeSupported() and isMaxLengthSupported(); these last two predicates
// did not, so asking one of them FIRST compared the caller's preference
// against a `quality` field the platform had never filled in, and answered
// "unsupported" for a constraint the platform honours. isSupported()
// masked it, because isSizeSupported() runs first and builds.
build();
return preferredQuality == 0 || quality == preferredQuality;
}

Expand All@@ -647,6 +654,8 @@ public boolean isQualitySupported() {
///
/// - #getPreferredMaxFileSize()
public boolean isMaxFileSizeSupported() {
// Resolve first, for the same reason as isQualitySupported() above.
build();
return preferredMaxFileSize == 0 || maxFileSize == preferredMaxFileSize;
}

Expand Down
Original file line numberDiff line numberDiff line change
Expand Up@@ -37,6 +37,11 @@ public VideoCaptureConstraints compile(VideoCaptureConstraints vcc) {
VideoCaptureConstraints out = new VideoCaptureConstraints();
int prefW = vcc.getPreferredWidth();
int prefH = vcc.getPreferredHeight();
// The size this platform uses to express the requested quality, or 0 when the
// caller asked for no quality or pinned the size itself. Kept so the negotiated
// result below can be compared against what the quality actually asked for.
int qualityW = 0;
int qualityH = 0;
if (vcc.getPreferredQuality() != 0 && prefW == 0 && prefH == 0) {
switch (vcc.getPreferredQuality()) {
case VideoCaptureConstraints.QUALITY_LOW:
Expand All@@ -48,12 +53,23 @@ public VideoCaptureConstraints compile(VideoCaptureConstraints vcc) {
prefH = 720;
break;
}
out.preferredQuality(0);
qualityW = prefW;
qualityH = prefH;
}
if (prefW > 0 || prefH > 0) {
MediaResult res = new MediaTool().query(prefW, prefH);
out.preferredWidth(res.getWidth())
.preferredHeight(res.getHeight());
// Report the quality back only when the device actually gave us the size that
// quality maps to. Leaving the resolved quality at 0 unconditionally, as this
// did, made isQualitySupported() answer false for every caller that asked for
// QUALITY_LOW or QUALITY_HIGH -- the resolved value differed from the nonzero
// preferred one -- even though the capture was constrained exactly as asked.
// getUserMedia negotiates, so a device that cannot reach 1280x720 returns
// something smaller, and then the quality genuinely was not honored.
if (qualityW > 0 && res.getWidth() == qualityW && res.getHeight() == qualityH) {
out.preferredQuality(vcc.getPreferredQuality());
Comment thread
shai-almog marked this conversation as resolved.
}
}
out.preferredMaxLength(vcc.getPreferredMaxLength());
return out;
Expand Down
Original file line numberDiff line numberDiff line change
@@ -1,3 +1,25 @@
/*
* Copyright (c) 2026, Codename One and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Codename One designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Codename One through http://www.codenameone.com/ if you
* need additional information or have any questions.
*/
package com.codenameone.developerguide.snippets.generated;

import com.codename1.gpu.*;
Expand DownExpand Up@@ -57,18 +79,18 @@ class ComponentSelectorJava001Snippet {
Resources theme;
void snippet() throws Exception {
// tag::component-selector-java-001[]
// null
// ...

Button slideUp = $(new Button("Slide Up")) //
.setIcon(FontImage.MATERIAL_EXPAND_LESS) //
.addActionListener(e->{ //
$(e) //
.getParent() //
.find(">*") //
.slideUpAndWait(1000) //
.slideDownAndWait(1000); //
Button slideUp = $(new Button("Slide Up")) // <1>
.setIcon(FontImage.MATERIAL_EXPAND_LESS) // <2>
.addActionListener(e->{ // <3>
$(e) // <4>
.getParent() // <5>
.find(">*") // <6>
.slideUpAndWait(1000) // <7>
.slideDownAndWait(1000); // <8>
})
.asComponent(Button.class); //
.asComponent(Button.class); // <9>
// end::component-selector-java-001[]
}
}
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,104 @@
/*
* Copyright (c) 2026, Codename One and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Codename One designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Codename One through http://www.codenameone.com/ if you
* need additional information or have any questions.
*/
package com.codenameone.developerguide.snippets.generated;

import com.codename1.gpu.*;
import com.codename1.ui.*;
import com.codename1.ui.animations.*;
import com.codename1.ui.events.*;
import com.codename1.ui.geom.*;
import com.codename1.ui.layouts.*;
import com.codename1.ui.list.*;
import com.codename1.ui.plaf.*;
import com.codename1.ui.util.*;
import com.codename1.components.*;
import com.codename1.charts.models.*;
import com.codename1.charts.renderers.*;
import com.codename1.charts.views.*;
import com.codename1.capture.*;
import com.codename1.io.*;
import com.codename1.l10n.*;
import com.codename1.location.*;
import com.codename1.maps.*;
import com.codename1.media.*;
import com.codename1.messaging.*;
import com.codename1.payment.*;
import com.codename1.processing.*;
import com.codename1.properties.*;
import com.codename1.push.*;
import com.codename1.security.*;
import com.codename1.social.*;
import com.codename1.ui.spinner.*;
import java.io.*;
import java.util.*;
import static com.codename1.ui.ComponentSelector.$;

class ComponentSelectorJava007Snippet {

Object context;
Object url;
Object value;
Object body;
Object event;
String apiKey = "test-key";
String myHttpsURL = "https://example.com";
java.util.List<String> validKeysList = new java.util.ArrayList<>();
Image myImage;
Graphics graphics;
Graphics g;
GraphicsDevice device;
Form form;
Form hi;
Container cnt;
Container myForm;
Component component;
Button button;
MultiButton myMultiButton;
Label label;
BrowserComponent browserComponent;
Resources theme;
void snippet() throws Exception {
// tag::component-selector-java-007[]
Button replace = $(new Button("Replace Fade/Slide"))
.setIcon(FontImage.MATERIAL_REDEEM)
.addActionListener(e->{
$(e).getParent()
.find(">*") // <1>
.replaceAndWait(c->{ // <2>
return $(new Label("Replacement")) // <3>
.putClientProperty("origComponent", c) // <4>
.asComponent();
}, CommonTransitions.createFade(1000)) // <5>
.replaceAndWait(c->{
Component orig = (Component)c.getClientProperty("origComponent");
if (orig != null) {
c.putClientProperty("origComponent", null);
return orig; // <6>
}
return c;
}, CommonTransitions.createCover(CommonTransitions.SLIDE_HORIZONTAL, false, 1000)); // <7>
})
.asComponent(Button.class);
// end::component-selector-java-007[]
}
}
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,90 @@
/*
* Copyright (c) 2026, Codename One and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Codename One designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Codename One through http://www.codenameone.com/ if you
* need additional information or have any questions.
*/
package com.codenameone.developerguide.snippets.generated;

import com.codename1.gpu.*;
import com.codename1.ui.*;
import com.codename1.ui.animations.*;
import com.codename1.ui.events.*;
import com.codename1.ui.geom.*;
import com.codename1.ui.layouts.*;
import com.codename1.ui.list.*;
import com.codename1.ui.plaf.*;
import com.codename1.ui.util.*;
import com.codename1.components.*;
import com.codename1.charts.models.*;
import com.codename1.charts.renderers.*;
import com.codename1.charts.views.*;
import com.codename1.capture.*;
import com.codename1.io.*;
import com.codename1.l10n.*;
import com.codename1.location.*;
import com.codename1.maps.*;
import com.codename1.media.*;
import com.codename1.messaging.*;
import com.codename1.payment.*;
import com.codename1.processing.*;
import com.codename1.properties.*;
import com.codename1.push.*;
import com.codename1.security.*;
import com.codename1.social.*;
import com.codename1.ui.spinner.*;
import java.io.*;
import java.util.*;


class VideoCaptureConstraintsJava001Snippet {

Object context;
Object url;
Object value;
Object body;
Object event;
String apiKey = "test-key";
String myHttpsURL = "https://example.com";
java.util.List<String> validKeysList = new java.util.ArrayList<>();
Image myImage;
Graphics graphics;
Graphics g;
GraphicsDevice device;
Form form;
Form hi;
Container cnt;
Container myForm;
Component component;
Button button;
MultiButton myMultiButton;
Label label;
BrowserComponent browserComponent;
Resources theme;
void snippet() throws Exception {
// tag::video-capture-constraints-java-001[]
// The original wrote "new VideoCaptureConstraint()" -- a class that does
// not exist. Corrected while restoring it: a snippet that cannot compile is
// worse than no snippet.
VideoCaptureConstraints cnst = new VideoCaptureConstraints()
.preferredQuality(VideoCaptureConstraints.QUALITY_LOW)
.preferredMaxLength(5);
// end::video-capture-constraints-java-001[]
}
}
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,87 @@
/*
* Copyright (c) 2026, Codename One and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Codename One designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Codename One through http://www.codenameone.com/ if you
* need additional information or have any questions.
*/
package com.codenameone.developerguide.snippets.generated;

import com.codename1.gpu.*;
import com.codename1.ui.*;
import com.codename1.ui.animations.*;
import com.codename1.ui.events.*;
import com.codename1.ui.geom.*;
import com.codename1.ui.layouts.*;
import com.codename1.ui.list.*;
import com.codename1.ui.plaf.*;
import com.codename1.ui.util.*;
import com.codename1.components.*;
import com.codename1.charts.models.*;
import com.codename1.charts.renderers.*;
import com.codename1.charts.views.*;
import com.codename1.capture.*;
import com.codename1.io.*;
import com.codename1.l10n.*;
import com.codename1.location.*;
import com.codename1.maps.*;
import com.codename1.media.*;
import com.codename1.messaging.*;
import com.codename1.payment.*;
import com.codename1.processing.*;
import com.codename1.properties.*;
import com.codename1.push.*;
import com.codename1.security.*;
import com.codename1.social.*;
import com.codename1.ui.spinner.*;
import java.io.*;
import java.util.*;


class VideoCaptureConstraintsJava002Snippet {

Object context;
Object url;
Object value;
Object body;
Object event;
String apiKey = "test-key";
String myHttpsURL = "https://example.com";
java.util.List<String> validKeysList = new java.util.ArrayList<>();
Image myImage;
Graphics graphics;
Graphics g;
GraphicsDevice device;
Form form;
Form hi;
Container cnt;
Container myForm;
Component component;
Button button;
MultiButton myMultiButton;
Label label;
BrowserComponent browserComponent;
Resources theme;
VideoCaptureConstraints cnst;

void snippet() throws Exception {
// tag::video-capture-constraints-java-002[]
String videoPath = Capture.captureVideo(cnst);
// end::video-capture-constraints-java-002[]
}
}
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