refactor: Remove INavigable in favor of IFocusableNode. - #9037

Merged
gonfunko merged 3 commits into
RaspberryPiFoundation:rc/v12.0.0from
gonfunko:inavigable-refactor
May 13, 2025
Merged

refactor: Remove INavigable in favor of IFocusableNode.#9037
gonfunko merged 3 commits into
RaspberryPiFoundation:rc/v12.0.0from
gonfunko:inavigable-refactor

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The basics

The details

Proposed Changes

This PR gets rid of the INavigable interface, since it was reduced to just getClass(), and there was significant objection to that. Instead, we now act directly on IFocusableNode instances. As a side effect, this also makes navigation policies Just Work for Field subclasses, and opens up the possibility of removing the cursor's curNode in favor of asking the focus manager for the currently focused thing, although I'll address that in a followup change. Registering navigation policies has been moved out of the cursor and into the Navigator.

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Thanks @gonfunko! Had some thoughts.

Approving to unblock, but I'm happy to take another pass. Didn't look at the flyout navigation policy super closely since it appeared to have a bunch of unfinished code int.

Comment threadcore/interfaces/i_navigation_policy.ts
* the given object.
*
* @param current An instance to check whether this policy applies to.
* @returns True if the given object is of a type handled by this policy.

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A nit but I don't think this actually returns a boolean, I think it returns current coerced to type T or undefined if coercion fails per the predicate.

I'm not 100% certain on this and I find the TypeScript documentation unclear, but I recall debugging guards like this before and being surprised that their return values weren't actually booleans.

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I agree the docs are unclear on this, but I think boolean is more useful to both folks reading and implementing than the perhaps technically correct value; ultimately the method needs to return a boolean (if you're implementing it) and you can rely on it being a truthy value if you call it.

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I used the language 'whether' in this case which I suppose is slightly more ambiguous (perhaps beneficially):

/** * Determines whether the provided object fulfills the contract of * IFocusableNode. * * @param object The object to test. * @returns Whether the provided object can be used as an IFocusableNode. */exportfunctionisFocusableNode(object: any|null): object is IFocusableNode{return(object&&'getFocusableElement'inobject&&'getFocusableTree'inobject&&'onNodeFocus'inobject&&'onNodeBlur'inobject&&'canBeFocused'inobject);}

Not sure that's actually better. Note I don't have strong opinions here, so if you prefer the explicit 'True' that seems reasonable to me.

Comment threadcore/keyboard_nav/flyout_navigation_policy.ts Outdated
Comment threadcore/navigator.ts Outdated
Comment threadcore/navigator.ts Outdated
Comment threadcore/flyout_navigator.ts
Comment threadcore/blockly.ts
Comment threadcore/keyboard_nav/line_cursor.ts

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Approved mod some deletion of logs.

This feels solid.

Comment threadcore/keyboard_nav/flyout_navigation_policy.ts Outdated
Comment threadcore/keyboard_nav/flyout_navigation_policy.ts Outdated
@gonfunko
gonfunko merged commit ae22165 into RaspberryPiFoundation:rc/v12.0.0May 13, 2025
@gonfunko
gonfunko deleted the inavigable-refactor branch May 13, 2025 22:04
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@gonfunko@BenHenning@rachel-fenichel
, '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" + '
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refactor: Remove INavigable in favor of IFocusableNode. - #9037

Merged
gonfunko merged 3 commits into
RaspberryPiFoundation:rc/v12.0.0from
gonfunko:inavigable-refactor
May 13, 2025
Merged

refactor: Remove INavigable in favor of IFocusableNode.#9037
gonfunko merged 3 commits into
RaspberryPiFoundation:rc/v12.0.0from
gonfunko:inavigable-refactor

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@gonfunko

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The basics

The details

Proposed Changes

This PR gets rid of the INavigable interface, since it was reduced to just getClass(), and there was significant objection to that. Instead, we now act directly on IFocusableNode instances. As a side effect, this also makes navigation policies Just Work for Field subclasses, and opens up the possibility of removing the cursor's curNode in favor of asking the focus manager for the currently focused thing, although I'll address that in a followup change. Registering navigation policies has been moved out of the cursor and into the Navigator.

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Thanks @gonfunko! Had some thoughts.

Approving to unblock, but I'm happy to take another pass. Didn't look at the flyout navigation policy super closely since it appeared to have a bunch of unfinished code int.

Comment threadcore/interfaces/i_navigation_policy.ts
* the given object.
*
* @param current An instance to check whether this policy applies to.
* @returns True if the given object is of a type handled by this policy.

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A nit but I don't think this actually returns a boolean, I think it returns current coerced to type T or undefined if coercion fails per the predicate.

I'm not 100% certain on this and I find the TypeScript documentation unclear, but I recall debugging guards like this before and being surprised that their return values weren't actually booleans.

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I agree the docs are unclear on this, but I think boolean is more useful to both folks reading and implementing than the perhaps technically correct value; ultimately the method needs to return a boolean (if you're implementing it) and you can rely on it being a truthy value if you call it.

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I used the language 'whether' in this case which I suppose is slightly more ambiguous (perhaps beneficially):

/** * Determines whether the provided object fulfills the contract of * IFocusableNode. * * @param object The object to test. * @returns Whether the provided object can be used as an IFocusableNode. */exportfunctionisFocusableNode(object: any|null): object is IFocusableNode{return(object&&'getFocusableElement'inobject&&'getFocusableTree'inobject&&'onNodeFocus'inobject&&'onNodeBlur'inobject&&'canBeFocused'inobject);}

Not sure that's actually better. Note I don't have strong opinions here, so if you prefer the explicit 'True' that seems reasonable to me.

Comment threadcore/keyboard_nav/flyout_navigation_policy.ts Outdated
Comment threadcore/navigator.ts Outdated
Comment threadcore/navigator.ts Outdated
Comment threadcore/flyout_navigator.ts
Comment threadcore/blockly.ts
Comment threadcore/keyboard_nav/line_cursor.ts

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Approved mod some deletion of logs.

This feels solid.

Comment threadcore/keyboard_nav/flyout_navigation_policy.ts Outdated
Comment threadcore/keyboard_nav/flyout_navigation_policy.ts Outdated
@gonfunko
gonfunko merged commit ae22165 into RaspberryPiFoundation:rc/v12.0.0May 13, 2025
@gonfunko
gonfunko deleted the inavigable-refactor branch May 13, 2025 22:04
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@gonfunko@BenHenning@rachel-fenichel
, '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('^' + ".*" + '
Skip to content

refactor: Remove INavigable in favor of IFocusableNode. - #9037

Merged
gonfunko merged 3 commits into
RaspberryPiFoundation:rc/v12.0.0from
gonfunko:inavigable-refactor
May 13, 2025
Merged

refactor: Remove INavigable in favor of IFocusableNode.#9037
gonfunko merged 3 commits into
RaspberryPiFoundation:rc/v12.0.0from
gonfunko:inavigable-refactor

Conversation

@gonfunko

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The basics

The details

Proposed Changes

This PR gets rid of the INavigable interface, since it was reduced to just getClass(), and there was significant objection to that. Instead, we now act directly on IFocusableNode instances. As a side effect, this also makes navigation policies Just Work for Field subclasses, and opens up the possibility of removing the cursor's curNode in favor of asking the focus manager for the currently focused thing, although I'll address that in a followup change. Registering navigation policies has been moved out of the cursor and into the Navigator.

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Thanks @gonfunko! Had some thoughts.

Approving to unblock, but I'm happy to take another pass. Didn't look at the flyout navigation policy super closely since it appeared to have a bunch of unfinished code int.

Comment threadcore/interfaces/i_navigation_policy.ts
* the given object.
*
* @param current An instance to check whether this policy applies to.
* @returns True if the given object is of a type handled by this policy.

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A nit but I don't think this actually returns a boolean, I think it returns current coerced to type T or undefined if coercion fails per the predicate.

I'm not 100% certain on this and I find the TypeScript documentation unclear, but I recall debugging guards like this before and being surprised that their return values weren't actually booleans.

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ContributorAuthor

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I agree the docs are unclear on this, but I think boolean is more useful to both folks reading and implementing than the perhaps technically correct value; ultimately the method needs to return a boolean (if you're implementing it) and you can rely on it being a truthy value if you call it.

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I used the language 'whether' in this case which I suppose is slightly more ambiguous (perhaps beneficially):

/** * Determines whether the provided object fulfills the contract of * IFocusableNode. * * @param object The object to test. * @returns Whether the provided object can be used as an IFocusableNode. */exportfunctionisFocusableNode(object: any|null): object is IFocusableNode{return(object&&'getFocusableElement'inobject&&'getFocusableTree'inobject&&'onNodeFocus'inobject&&'onNodeBlur'inobject&&'canBeFocused'inobject);}

Not sure that's actually better. Note I don't have strong opinions here, so if you prefer the explicit 'True' that seems reasonable to me.

Comment threadcore/keyboard_nav/flyout_navigation_policy.ts Outdated
Comment threadcore/navigator.ts Outdated
Comment threadcore/navigator.ts Outdated
Comment threadcore/flyout_navigator.ts
Comment threadcore/blockly.ts
Comment threadcore/keyboard_nav/line_cursor.ts

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Approved mod some deletion of logs.

This feels solid.

Comment threadcore/keyboard_nav/flyout_navigation_policy.ts Outdated
Comment threadcore/keyboard_nav/flyout_navigation_policy.ts Outdated
@gonfunko
gonfunko merged commit ae22165 into RaspberryPiFoundation:rc/v12.0.0May 13, 2025
@gonfunko
gonfunko deleted the inavigable-refactor branch May 13, 2025 22:04
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@gonfunko@BenHenning@rachel-fenichel
, '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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refactor: Remove INavigable in favor of IFocusableNode. - #9037

Merged
gonfunko merged 3 commits into
RaspberryPiFoundation:rc/v12.0.0from
gonfunko:inavigable-refactor
May 13, 2025
Merged

refactor: Remove INavigable in favor of IFocusableNode.#9037
gonfunko merged 3 commits into
RaspberryPiFoundation:rc/v12.0.0from
gonfunko:inavigable-refactor

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@gonfunko

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The basics

The details

Proposed Changes

This PR gets rid of the INavigable interface, since it was reduced to just getClass(), and there was significant objection to that. Instead, we now act directly on IFocusableNode instances. As a side effect, this also makes navigation policies Just Work for Field subclasses, and opens up the possibility of removing the cursor's curNode in favor of asking the focus manager for the currently focused thing, although I'll address that in a followup change. Registering navigation policies has been moved out of the cursor and into the Navigator.

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Thanks @gonfunko! Had some thoughts.

Approving to unblock, but I'm happy to take another pass. Didn't look at the flyout navigation policy super closely since it appeared to have a bunch of unfinished code int.

Comment threadcore/interfaces/i_navigation_policy.ts
* the given object.
*
* @param current An instance to check whether this policy applies to.
* @returns True if the given object is of a type handled by this policy.

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A nit but I don't think this actually returns a boolean, I think it returns current coerced to type T or undefined if coercion fails per the predicate.

I'm not 100% certain on this and I find the TypeScript documentation unclear, but I recall debugging guards like this before and being surprised that their return values weren't actually booleans.

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I agree the docs are unclear on this, but I think boolean is more useful to both folks reading and implementing than the perhaps technically correct value; ultimately the method needs to return a boolean (if you're implementing it) and you can rely on it being a truthy value if you call it.

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I used the language 'whether' in this case which I suppose is slightly more ambiguous (perhaps beneficially):

/** * Determines whether the provided object fulfills the contract of * IFocusableNode. * * @param object The object to test. * @returns Whether the provided object can be used as an IFocusableNode. */exportfunctionisFocusableNode(object: any|null): object is IFocusableNode{return(object&&'getFocusableElement'inobject&&'getFocusableTree'inobject&&'onNodeFocus'inobject&&'onNodeBlur'inobject&&'canBeFocused'inobject);}

Not sure that's actually better. Note I don't have strong opinions here, so if you prefer the explicit 'True' that seems reasonable to me.

Comment threadcore/keyboard_nav/flyout_navigation_policy.ts Outdated
Comment threadcore/navigator.ts Outdated
Comment threadcore/navigator.ts Outdated
Comment threadcore/flyout_navigator.ts
Comment threadcore/blockly.ts
Comment threadcore/keyboard_nav/line_cursor.ts

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Approved mod some deletion of logs.

This feels solid.

Comment threadcore/keyboard_nav/flyout_navigation_policy.ts Outdated
Comment threadcore/keyboard_nav/flyout_navigation_policy.ts Outdated
@gonfunko
gonfunko merged commit ae22165 into RaspberryPiFoundation:rc/v12.0.0May 13, 2025
@gonfunko
gonfunko deleted the inavigable-refactor branch May 13, 2025 22:04
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3 participants

@gonfunko@BenHenning@rachel-fenichel
, '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

refactor: Remove INavigable in favor of IFocusableNode. - #9037

Merged
gonfunko merged 3 commits into
RaspberryPiFoundation:rc/v12.0.0from
gonfunko:inavigable-refactor
May 13, 2025
Merged

refactor: Remove INavigable in favor of IFocusableNode.#9037
gonfunko merged 3 commits into
RaspberryPiFoundation:rc/v12.0.0from
gonfunko:inavigable-refactor

Conversation

@gonfunko

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The basics

The details

Proposed Changes

This PR gets rid of the INavigable interface, since it was reduced to just getClass(), and there was significant objection to that. Instead, we now act directly on IFocusableNode instances. As a side effect, this also makes navigation policies Just Work for Field subclasses, and opens up the possibility of removing the cursor's curNode in favor of asking the focus manager for the currently focused thing, although I'll address that in a followup change. Registering navigation policies has been moved out of the cursor and into the Navigator.

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Thanks @gonfunko! Had some thoughts.

Approving to unblock, but I'm happy to take another pass. Didn't look at the flyout navigation policy super closely since it appeared to have a bunch of unfinished code int.

Comment threadcore/interfaces/i_navigation_policy.ts
* the given object.
*
* @param current An instance to check whether this policy applies to.
* @returns True if the given object is of a type handled by this policy.

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A nit but I don't think this actually returns a boolean, I think it returns current coerced to type T or undefined if coercion fails per the predicate.

I'm not 100% certain on this and I find the TypeScript documentation unclear, but I recall debugging guards like this before and being surprised that their return values weren't actually booleans.

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ContributorAuthor

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I agree the docs are unclear on this, but I think boolean is more useful to both folks reading and implementing than the perhaps technically correct value; ultimately the method needs to return a boolean (if you're implementing it) and you can rely on it being a truthy value if you call it.

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I used the language 'whether' in this case which I suppose is slightly more ambiguous (perhaps beneficially):

/** * Determines whether the provided object fulfills the contract of * IFocusableNode. * * @param object The object to test. * @returns Whether the provided object can be used as an IFocusableNode. */exportfunctionisFocusableNode(object: any|null): object is IFocusableNode{return(object&&'getFocusableElement'inobject&&'getFocusableTree'inobject&&'onNodeFocus'inobject&&'onNodeBlur'inobject&&'canBeFocused'inobject);}

Not sure that's actually better. Note I don't have strong opinions here, so if you prefer the explicit 'True' that seems reasonable to me.

Comment threadcore/keyboard_nav/flyout_navigation_policy.ts Outdated
Comment threadcore/navigator.ts Outdated
Comment threadcore/navigator.ts Outdated
Comment threadcore/flyout_navigator.ts
Comment threadcore/blockly.ts
Comment threadcore/keyboard_nav/line_cursor.ts

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Approved mod some deletion of logs.

This feels solid.

Comment threadcore/keyboard_nav/flyout_navigation_policy.ts Outdated
Comment threadcore/keyboard_nav/flyout_navigation_policy.ts Outdated
@gonfunko
gonfunko merged commit ae22165 into RaspberryPiFoundation:rc/v12.0.0May 13, 2025
@gonfunko
gonfunko deleted the inavigable-refactor branch May 13, 2025 22:04
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PR: refactorRefactors code

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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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refactor: Remove INavigable in favor of IFocusableNode. - #9037

Merged
gonfunko merged 3 commits into
RaspberryPiFoundation:rc/v12.0.0from
gonfunko:inavigable-refactor
May 13, 2025
Merged

refactor: Remove INavigable in favor of IFocusableNode.#9037
gonfunko merged 3 commits into
RaspberryPiFoundation:rc/v12.0.0from
gonfunko:inavigable-refactor

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The basics

The details

Proposed Changes

This PR gets rid of the INavigable interface, since it was reduced to just getClass(), and there was significant objection to that. Instead, we now act directly on IFocusableNode instances. As a side effect, this also makes navigation policies Just Work for Field subclasses, and opens up the possibility of removing the cursor's curNode in favor of asking the focus manager for the currently focused thing, although I'll address that in a followup change. Registering navigation policies has been moved out of the cursor and into the Navigator.

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Thanks @gonfunko! Had some thoughts.

Approving to unblock, but I'm happy to take another pass. Didn't look at the flyout navigation policy super closely since it appeared to have a bunch of unfinished code int.

Comment threadcore/interfaces/i_navigation_policy.ts
* the given object.
*
* @param current An instance to check whether this policy applies to.
* @returns True if the given object is of a type handled by this policy.

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A nit but I don't think this actually returns a boolean, I think it returns current coerced to type T or undefined if coercion fails per the predicate.

I'm not 100% certain on this and I find the TypeScript documentation unclear, but I recall debugging guards like this before and being surprised that their return values weren't actually booleans.

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I agree the docs are unclear on this, but I think boolean is more useful to both folks reading and implementing than the perhaps technically correct value; ultimately the method needs to return a boolean (if you're implementing it) and you can rely on it being a truthy value if you call it.

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I used the language 'whether' in this case which I suppose is slightly more ambiguous (perhaps beneficially):

/** * Determines whether the provided object fulfills the contract of * IFocusableNode. * * @param object The object to test. * @returns Whether the provided object can be used as an IFocusableNode. */exportfunctionisFocusableNode(object: any|null): object is IFocusableNode{return(object&&'getFocusableElement'inobject&&'getFocusableTree'inobject&&'onNodeFocus'inobject&&'onNodeBlur'inobject&&'canBeFocused'inobject);}

Not sure that's actually better. Note I don't have strong opinions here, so if you prefer the explicit 'True' that seems reasonable to me.

Comment threadcore/keyboard_nav/flyout_navigation_policy.ts Outdated
Comment threadcore/navigator.ts Outdated
Comment threadcore/navigator.ts Outdated
Comment threadcore/flyout_navigator.ts
Comment threadcore/blockly.ts
Comment threadcore/keyboard_nav/line_cursor.ts

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Approved mod some deletion of logs.

This feels solid.

Comment threadcore/keyboard_nav/flyout_navigation_policy.ts Outdated
Comment threadcore/keyboard_nav/flyout_navigation_policy.ts Outdated
@gonfunko
gonfunko merged commit ae22165 into RaspberryPiFoundation:rc/v12.0.0May 13, 2025
@gonfunko
gonfunko deleted the inavigable-refactor branch May 13, 2025 22:04
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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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refactor: Remove INavigable in favor of IFocusableNode. - #9037

Merged
gonfunko merged 3 commits into
RaspberryPiFoundation:rc/v12.0.0from
gonfunko:inavigable-refactor
May 13, 2025
Merged

refactor: Remove INavigable in favor of IFocusableNode.#9037
gonfunko merged 3 commits into
RaspberryPiFoundation:rc/v12.0.0from
gonfunko:inavigable-refactor

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@gonfunko

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The basics

The details

Proposed Changes

This PR gets rid of the INavigable interface, since it was reduced to just getClass(), and there was significant objection to that. Instead, we now act directly on IFocusableNode instances. As a side effect, this also makes navigation policies Just Work for Field subclasses, and opens up the possibility of removing the cursor's curNode in favor of asking the focus manager for the currently focused thing, although I'll address that in a followup change. Registering navigation policies has been moved out of the cursor and into the Navigator.

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Thanks @gonfunko! Had some thoughts.

Approving to unblock, but I'm happy to take another pass. Didn't look at the flyout navigation policy super closely since it appeared to have a bunch of unfinished code int.

Comment threadcore/interfaces/i_navigation_policy.ts
* the given object.
*
* @param current An instance to check whether this policy applies to.
* @returns True if the given object is of a type handled by this policy.

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A nit but I don't think this actually returns a boolean, I think it returns current coerced to type T or undefined if coercion fails per the predicate.

I'm not 100% certain on this and I find the TypeScript documentation unclear, but I recall debugging guards like this before and being surprised that their return values weren't actually booleans.

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I agree the docs are unclear on this, but I think boolean is more useful to both folks reading and implementing than the perhaps technically correct value; ultimately the method needs to return a boolean (if you're implementing it) and you can rely on it being a truthy value if you call it.

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I used the language 'whether' in this case which I suppose is slightly more ambiguous (perhaps beneficially):

/** * Determines whether the provided object fulfills the contract of * IFocusableNode. * * @param object The object to test. * @returns Whether the provided object can be used as an IFocusableNode. */exportfunctionisFocusableNode(object: any|null): object is IFocusableNode{return(object&&'getFocusableElement'inobject&&'getFocusableTree'inobject&&'onNodeFocus'inobject&&'onNodeBlur'inobject&&'canBeFocused'inobject);}

Not sure that's actually better. Note I don't have strong opinions here, so if you prefer the explicit 'True' that seems reasonable to me.

Comment threadcore/keyboard_nav/flyout_navigation_policy.ts Outdated
Comment threadcore/navigator.ts Outdated
Comment threadcore/navigator.ts Outdated
Comment threadcore/flyout_navigator.ts
Comment threadcore/blockly.ts
Comment threadcore/keyboard_nav/line_cursor.ts

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Approved mod some deletion of logs.

This feels solid.

Comment threadcore/keyboard_nav/flyout_navigation_policy.ts Outdated
Comment threadcore/keyboard_nav/flyout_navigation_policy.ts Outdated
@gonfunko
gonfunko merged commit ae22165 into RaspberryPiFoundation:rc/v12.0.0May 13, 2025
@gonfunko
gonfunko deleted the inavigable-refactor branch May 13, 2025 22:04
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3 participants

@gonfunko@BenHenning@rachel-fenichel
, '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); } })(); })();
Skip to content

refactor: Remove INavigable in favor of IFocusableNode. - #9037

Merged
gonfunko merged 3 commits into
RaspberryPiFoundation:rc/v12.0.0from
gonfunko:inavigable-refactor
May 13, 2025
Merged

refactor: Remove INavigable in favor of IFocusableNode.#9037
gonfunko merged 3 commits into
RaspberryPiFoundation:rc/v12.0.0from
gonfunko:inavigable-refactor

Conversation

@gonfunko

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The basics

The details

Proposed Changes

This PR gets rid of the INavigable interface, since it was reduced to just getClass(), and there was significant objection to that. Instead, we now act directly on IFocusableNode instances. As a side effect, this also makes navigation policies Just Work for Field subclasses, and opens up the possibility of removing the cursor's curNode in favor of asking the focus manager for the currently focused thing, although I'll address that in a followup change. Registering navigation policies has been moved out of the cursor and into the Navigator.

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Thanks @gonfunko! Had some thoughts.

Approving to unblock, but I'm happy to take another pass. Didn't look at the flyout navigation policy super closely since it appeared to have a bunch of unfinished code int.

Comment threadcore/interfaces/i_navigation_policy.ts
* the given object.
*
* @param current An instance to check whether this policy applies to.
* @returns True if the given object is of a type handled by this policy.

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A nit but I don't think this actually returns a boolean, I think it returns current coerced to type T or undefined if coercion fails per the predicate.

I'm not 100% certain on this and I find the TypeScript documentation unclear, but I recall debugging guards like this before and being surprised that their return values weren't actually booleans.

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ContributorAuthor

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I agree the docs are unclear on this, but I think boolean is more useful to both folks reading and implementing than the perhaps technically correct value; ultimately the method needs to return a boolean (if you're implementing it) and you can rely on it being a truthy value if you call it.

Copy link
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I used the language 'whether' in this case which I suppose is slightly more ambiguous (perhaps beneficially):

/** * Determines whether the provided object fulfills the contract of * IFocusableNode. * * @param object The object to test. * @returns Whether the provided object can be used as an IFocusableNode. */exportfunctionisFocusableNode(object: any|null): object is IFocusableNode{return(object&&'getFocusableElement'inobject&&'getFocusableTree'inobject&&'onNodeFocus'inobject&&'onNodeBlur'inobject&&'canBeFocused'inobject);}

Not sure that's actually better. Note I don't have strong opinions here, so if you prefer the explicit 'True' that seems reasonable to me.

Comment threadcore/keyboard_nav/flyout_navigation_policy.ts Outdated
Comment threadcore/navigator.ts Outdated
Comment threadcore/navigator.ts Outdated
Comment threadcore/flyout_navigator.ts
Comment threadcore/blockly.ts
Comment threadcore/keyboard_nav/line_cursor.ts

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Approved mod some deletion of logs.

This feels solid.

Comment threadcore/keyboard_nav/flyout_navigation_policy.ts Outdated
Comment threadcore/keyboard_nav/flyout_navigation_policy.ts Outdated
@gonfunko
gonfunko merged commit ae22165 into RaspberryPiFoundation:rc/v12.0.0May 13, 2025
@gonfunko
gonfunko deleted the inavigable-refactor branch May 13, 2025 22:04
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Labels

PR: refactorRefactors code

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Successfully merging this pull request may close these issues.

3 participants

@gonfunko@BenHenning@rachel-fenichel