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Passing meta tags to <head> and <footer> #170

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Passing meta tags to <head> and <footer>#170

Description

@radumas
radumas
opened on Nov 30, 2017

I raised this on the community forum here when I wanted to add <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no" /> to the <head> of my app.

I noticed the <head> section gets defined by the index() function and so created a subclass of Dash to add the tag above.

classDash_responsive(dash.Dash):
def__init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
#Overriding from https://github.com/plotly/dash/blob/master/dash/dash.py#L282defindex(self, *args, **kwargs):
scripts=self._generate_scripts_html()
css=self._generate_css_dist_html()
config=self._generate_config_html()
title=getattr(self, 'title', 'Dash')
return (''' <!DOCTYPE html> <html> <head> <meta charset="UTF-8"/> <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no" /> <title>{}</title> {} </head> <body> <div id="react-entry-point"> <div class="_dash-loading"> Loading... </div> </div> </body> <footer> {} {} </footer> </html> '''.format(title, css, config, scripts))
app=Dash_responsive()

More generally, I propose app should have a head() and footer() function to add extra tags to either section which would get added to index()

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      , 'i'); if (__m === '*' || __re.test(location.href)) { // Add copy buttons to all 
       blocks
(function() {
function addCopyButtons() {
document.querySelectorAll('pre code').forEach(function(codeBlock) {
if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;
codeBlock.parentElement.setAttribute('data-copy-added', 'true');
var btn = document.createElement('button');
btn.textContent = 'Copy';
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;';
btn.onmouseover = function() { this.style.opacity = '1'; };
btn.onmouseout = function() { this.style.opacity = '0.7'; };
btn.onclick = function() {
navigator.clipboard.writeText(codeBlock.textContent).then(function() {
btn.textContent = 'Copied!';
setTimeout(function() { btn.textContent = 'Copy'; }, 1500);
});
};
codeBlock.parentElement.style.position = 'relative';
codeBlock.parentElement.appendChild(btn);
});
}
addCopyButtons();
// Re-run on dynamic content
var observer = new MutationObserver(addCopyButtons);
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '
Passing meta tags to <head> and <footer> · Issue #170 · plotly/dash · GitHub
      Skip to content
      Passing meta tags to <head> and <footer> #170
      Closed
      Closed
      Passing meta tags to <head> and <footer>#170
      Description
      @radumas
      radumas
      opened on Nov 30, 2017
      I raised this on the community forum here when I wanted to add <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no" /> to the <head> of my app.
      I noticed the <head> section gets defined by the index() function and so created a subclass of Dash to add the tag above.
      classDash_responsive(dash.Dash):
def__init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
#Overriding from https://github.com/plotly/dash/blob/master/dash/dash.py#L282defindex(self, *args, **kwargs):
scripts=self._generate_scripts_html()
css=self._generate_css_dist_html()
config=self._generate_config_html()
title=getattr(self, 'title', 'Dash')
return (''' <!DOCTYPE html> <html> <head> <meta charset="UTF-8"/> <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no" /> <title>{}</title> {} </head> <body> <div id="react-entry-point"> <div class="_dash-loading"> Loading... </div> </div> </body> <footer> {} {} </footer> </html> '''.format(title, css, config, scripts))
app=Dash_responsive()
      More generally, I propose app should have a head() and footer() function to add extra tags to either section which would get added to index()
      Metadata
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      Assignees
      No one assigned
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          None yet
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, 'i');
if (__m === '*' || __re.test(location.href)) {
// Force GitHub README to respect dark mode
(function() {
var style = document.createElement('style');
style.textContent = '
.markdown-body {
color-scheme: dark light;
}
.markdown-body pre { background: #161b22 !important; }
.markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }
.markdown-body table th, .markdown-body table td { border-color: #30363d !important; }
.markdown-body img { background: #0d1117; }
.markdown-body blockquote { border-left-color: #8b949e; }
.markdown-body hr { border-color: #30363d; }
';
document.head.appendChild(style);
})();
}
} catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
Passing meta tags to <head> and <footer> · Issue #170 · plotly/dash · GitHub
          Skip to content
          Passing meta tags to <head> and <footer> #170
          Closed
          Closed
          Passing meta tags to <head> and <footer>#170
          Description
          @radumas
          radumas
          opened on Nov 30, 2017
          I raised this on the community forum here when I wanted to add <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no" /> to the <head> of my app.
          I noticed the <head> section gets defined by the index() function and so created a subclass of Dash to add the tag above.
          classDash_responsive(dash.Dash):
def__init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
#Overriding from https://github.com/plotly/dash/blob/master/dash/dash.py#L282defindex(self, *args, **kwargs):
scripts=self._generate_scripts_html()
css=self._generate_css_dist_html()
config=self._generate_config_html()
title=getattr(self, 'title', 'Dash')
return (''' <!DOCTYPE html> <html> <head> <meta charset="UTF-8"/> <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no" /> <title>{}</title> {} </head> <body> <div id="react-entry-point"> <div class="_dash-loading"> Loading... </div> </div> </body> <footer> {} {} </footer> </html> '''.format(title, css, config, scripts))
app=Dash_responsive()
          More generally, I propose app should have a head() and footer() function to add extra tags to either section which would get added to index()
          Metadata
          Metadata
          Assignees
          No one assigned
            Labels
            No labels
            No labels
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            No type
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            No projects
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              No milestone
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              None yet
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              No branches or pull requests
              Issue actions
              
, 'i');
if (__m === '*' || __re.test(location.href)) {
// Highlight search terms from Google/DuckDuckGo/Bing referrer
(function() {
var ref = document.referrer;
var terms = [];
if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {
var url = new URL(ref);
var q = url.searchParams.get('q') || url.searchParams.get('p');
if (q) {
terms = q.split(/\s+/).filter(function(t) { return t.length > 2; });
}
}
if (terms.length === 0) return;
var style = document.createElement('style');
style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';
document.head.appendChild(style);
function highlight(node) {
if (node.nodeType === 3) { // text node
var text = node.textContent;
var found = false;
terms.forEach(function(term) {
var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\]\\]/g, '\\') + ')', 'gi');
if (regex.test(text)) {
found = true;
var frag = document.createDocumentFragment();
var parts = text.split(regex);
parts.forEach(function(part, i) {
if (i % 2 === 0) {
frag.appendChild(document.createTextNode(part));
} else {
var span = document.createElement('span');
span.className = 'userscript-highlight';
span.textContent = part;
frag.appendChild(span);
}
});
node.parentNode.replaceChild(frag, node);
}
});
} else if (node.nodeType === 1 && node.childNodes) { // element
var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];
if (!skipTags.includes(node.tagName)) {
Array.from(node.childNodes).forEach(highlight);
}
}
}
highlight(document.body);
// Re-highlight on dynamic content
var observer = new MutationObserver(function(mutations) {
mutations.forEach(function(m) {
m.addedNodes.forEach(function(node) {
if (node.nodeType === 1 || node.nodeType === 3) highlight(node);
});
});
});
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
Passing meta tags to <head> and <footer> · Issue #170 · plotly/dash · GitHub
              Skip to content
              Passing meta tags to <head> and <footer> #170
              Closed
              Closed
              Passing meta tags to <head> and <footer>#170
              Description
              @radumas
              radumas
              opened on Nov 30, 2017
              I raised this on the community forum here when I wanted to add <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no" /> to the <head> of my app.
              I noticed the <head> section gets defined by the index() function and so created a subclass of Dash to add the tag above.
              classDash_responsive(dash.Dash):
def__init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
#Overriding from https://github.com/plotly/dash/blob/master/dash/dash.py#L282defindex(self, *args, **kwargs):
scripts=self._generate_scripts_html()
css=self._generate_css_dist_html()
config=self._generate_config_html()
title=getattr(self, 'title', 'Dash')
return (''' <!DOCTYPE html> <html> <head> <meta charset="UTF-8"/> <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no" /> <title>{}</title> {} </head> <body> <div id="react-entry-point"> <div class="_dash-loading"> Loading... </div> </div> </body> <footer> {} {} </footer> </html> '''.format(title, css, config, scripts))
app=Dash_responsive()
              More generally, I propose app should have a head() and footer() function to add extra tags to either section which would get added to index()
              Metadata
              Metadata
              Assignees
              No one assigned
                Labels
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                  No milestone
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                  None yet
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                  No branches or pull requests
                  Issue actions
                  
, 'i');
if (__m === '*' || __re.test(location.href)) {
// Strip utm_, fbclid, gclid, etc. from all links on page
(function() {
var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',
'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',
'ref', 'ref_src', 'source', 'medium', 'campaign'];
function cleanUrl(url) {
try {
var u = new URL(url, window.location.origin);
var changed = false;
trackingParams.forEach(function(p) {
if (u.searchParams.has(p)) {
u.searchParams.delete(p);
changed = true;
}
});
return changed ? u.toString() : url;
} catch (e) {
return url;
}
}
function cleanLinks() {
document.querySelectorAll('a[href]').forEach(function(a) {
var clean = cleanUrl(a.href);
if (clean !== a.href) a.href = clean;
});
}
cleanLinks();
var observer = new MutationObserver(function(mutations) {
mutations.forEach(function(m) {
m.addedNodes.forEach(function(node) {
if (node.nodeType === 1) {
if (node.tagName === 'A') cleanLinks();
node.querySelectorAll('a[href]').forEach(function(a) {
var clean = cleanUrl(a.href);
if (clean !== a.href) a.href = clean;
});
}
});
});
});
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); }
})();
(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '
Passing meta tags to <head> and <footer> · Issue #170 · plotly/dash · GitHub
                  Skip to content
                  Passing meta tags to <head> and <footer> #170
                  Closed
                  Closed
                  Passing meta tags to <head> and <footer>#170
                  Description
                  @radumas
                  radumas
                  opened on Nov 30, 2017
                  I raised this on the community forum here when I wanted to add <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no" /> to the <head> of my app.
                  I noticed the <head> section gets defined by the index() function and so created a subclass of Dash to add the tag above.
                  classDash_responsive(dash.Dash):
def__init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
#Overriding from https://github.com/plotly/dash/blob/master/dash/dash.py#L282defindex(self, *args, **kwargs):
scripts=self._generate_scripts_html()
css=self._generate_css_dist_html()
config=self._generate_config_html()
title=getattr(self, 'title', 'Dash')
return (''' <!DOCTYPE html> <html> <head> <meta charset="UTF-8"/> <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no" /> <title>{}</title> {} </head> <body> <div id="react-entry-point"> <div class="_dash-loading"> Loading... </div> </div> </body> <footer> {} {} </footer> </html> '''.format(title, css, config, scripts))
app=Dash_responsive()
                  More generally, I propose app should have a head() and footer() function to add extra tags to either section which would get added to index()
                  Metadata
                  Metadata
                  Assignees
                  No one assigned
                    Labels
                    No labels
                    No labels
                    Type
                    No type
                    Projects
                    No projects
                      Milestone
                      No milestone
                      Relationships
                      None yet
                      Development
                      No branches or pull requests
                      Issue actions
                      
, 'i');
if (__m === '*' || __re.test(location.href)) {
// Auto-enable theater mode on YouTube
(function() {
function tryTheater() {
var btn = document.querySelector('button[aria-label="Theater mode"], ytd-player #player button[title="Theater mode"]');
if (btn && !btn.classList.contains('activated')) {
btn.click();
}
}
// Try immediately
tryTheater();
// Try after navigation (SPA)
var lastUrl = location.href;
setInterval(function() {
if (location.href !== lastUrl) {
lastUrl = location.href;
setTimeout(tryTheater, 500);
}
}, 1000);
// Also try on player load
var observer = new MutationObserver(tryTheater);
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
Passing meta tags to <head> and <footer> · Issue #170 · plotly/dash · GitHub
                      Skip to content
                      Passing meta tags to <head> and <footer> #170
                      Closed
                      Closed
                      Passing meta tags to <head> and <footer>#170
                      Description
                      @radumas
                      radumas
                      opened on Nov 30, 2017
                      I raised this on the community forum here when I wanted to add <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no" /> to the <head> of my app.
                      I noticed the <head> section gets defined by the index() function and so created a subclass of Dash to add the tag above.
                      classDash_responsive(dash.Dash):
def__init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
#Overriding from https://github.com/plotly/dash/blob/master/dash/dash.py#L282defindex(self, *args, **kwargs):
scripts=self._generate_scripts_html()
css=self._generate_css_dist_html()
config=self._generate_config_html()
title=getattr(self, 'title', 'Dash')
return (''' <!DOCTYPE html> <html> <head> <meta charset="UTF-8"/> <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no" /> <title>{}</title> {} </head> <body> <div id="react-entry-point"> <div class="_dash-loading"> Loading... </div> </div> </body> <footer> {} {} </footer> </html> '''.format(title, css, config, scripts))
app=Dash_responsive()
                      More generally, I propose app should have a head() and footer() function to add extra tags to either section which would get added to index()
                      Metadata
                      Metadata
                      Assignees
                      No one assigned
                        Labels
                        No labels
                        No labels
                        Type
                        No type
                        Projects
                        No projects
                          Milestone
                          No milestone
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                          None yet
                          Development
                          No branches or pull requests
                          Issue actions
                          
, 'i');
if (__m === '*' || __re.test(location.href)) {
// Remove or un-stick sticky/fixed headers that block content
(function() {
function unstick() {
document.querySelectorAll('header, nav, [role="banner"], .header, .navbar, .sticky, .fixed-top, [style*="position: fixed"], [style*="position:sticky"]').forEach(function(el) {
if (el.style.position === 'fixed' || el.style.position === 'sticky' || getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {
el.style.position = 'static';
el.style.top = 'auto';
el.style.zIndex = 'auto';
}
});
}
unstick();
var observer = new MutationObserver(unstick);
observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });
})();
}
} catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
Passing meta tags to <head> and <footer> · Issue #170 · plotly/dash · GitHub
                          Skip to content
                          Passing meta tags to <head> and <footer> #170
                          Closed
                          Closed
                          Passing meta tags to <head> and <footer>#170
                          Description
                          @radumas
                          radumas
                          opened on Nov 30, 2017
                          I raised this on the community forum here when I wanted to add <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no" /> to the <head> of my app.
                          I noticed the <head> section gets defined by the index() function and so created a subclass of Dash to add the tag above.
                          classDash_responsive(dash.Dash):
def__init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
#Overriding from https://github.com/plotly/dash/blob/master/dash/dash.py#L282defindex(self, *args, **kwargs):
scripts=self._generate_scripts_html()
css=self._generate_css_dist_html()
config=self._generate_config_html()
title=getattr(self, 'title', 'Dash')
return (''' <!DOCTYPE html> <html> <head> <meta charset="UTF-8"/> <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no" /> <title>{}</title> {} </head> <body> <div id="react-entry-point"> <div class="_dash-loading"> Loading... </div> </div> </body> <footer> {} {} </footer> </html> '''.format(title, css, config, scripts))
app=Dash_responsive()
                          More generally, I propose app should have a head() and footer() function to add extra tags to either section which would get added to index()
                          Metadata
                          Metadata
                          Assignees
                          No one assigned
                            Labels
                            No labels
                            No labels
                            Type
                            No type
                            Projects
                            No projects
                              Milestone
                              No milestone
                              Relationships
                              None yet
                              Development
                              No branches or pull requests
                              Issue actions
                              
, 'i');
if (__m === '*' || __re.test(location.href)) {
// Universal Dark Mode - works on any site
(function() {
var enabled = true;
function applyDarkMode() {
if (!enabled) return;
// Create style element if it doesn't exist
var style = document.getElementById('universal-dark-mode-style');
if (!style) {
style = document.createElement('style');
style.id = 'universal-dark-mode-style';
document.head.appendChild(style);
}
// Dark mode CSS - inverts colors but preserves images/video
style.textContent = '
/* Invert everything except media */
html {
filter: invert(1) hue-rotate(180deg) !important;
background: #1a1a2e !important;
}
/* Restore images, videos, iframes, canvas */
img, video, iframe, canvas, svg, picture, [style*="background-image"] {
filter: invert(1) hue-rotate(180deg) !important;
}
/* Preserve specific elements that should not be inverted */
.no-dark-mode, .no-dark-mode *,
[data-theme="light"], [data-theme="light"],
.ace_editor, .ace_editor *,
.CodeMirror, .CodeMirror *,
.monaco-editor, .monaco-editor *,
.markdown-body pre, .markdown-body pre *,
.highlight, .highlight *,
pre code, pre code * {
filter: none !important;
}
/* Fix common UI elements */
.modal, .popup, .dropdown-menu, .tooltip, .popover {
filter: invert(1) hue-rotate(180deg) !important;
background: #2d2d44 !important;
border-color: #444 !important;
}
/* Scrollbars */
::-webkit-scrollbar { background: #1a1a2e !important; }
::-webkit-scrollbar-thumb { background: #444 !important; }
::-webkit-scrollbar-thumb:hover { background: #555 !important; }
/* Selection */
::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }
::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }
';
}
function removeDarkMode() {
var style = document.getElementById('universal-dark-mode-style');
if (style) style.remove();
}
// Toggle with Alt+Shift+D
document.addEventListener('keydown', function(e) {
if (e.altKey && e.shiftKey && e.key === 'D') {
e.preventDefault();
enabled = !enabled;
if (enabled) {
applyDarkMode();
console.log('[Universal Dark Mode] Enabled');
} else {
removeDarkMode();
console.log('[Universal Dark Mode] Disabled');
}
}
});
// Apply on load
applyDarkMode();
// Re-apply on dynamic content
var observer = new MutationObserver(function(mutations) {
if (enabled && !document.getElementById('universal-dark-mode-style')) {
applyDarkMode();
}
});
observer.observe(document.head, { childList: true });
console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');
})();
}
} catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); }
})();
})();
Passing meta tags to <head> and <footer> · Issue #170 · plotly/dash · GitHub
                              Skip to content
                              Passing meta tags to <head> and <footer> #170
                              Closed
                              Closed
                              Passing meta tags to <head> and <footer>#170
                              Description
                              @radumas
                              radumas
                              opened on Nov 30, 2017
                              I raised this on the community forum here when I wanted to add <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no" /> to the <head> of my app.
                              I noticed the <head> section gets defined by the index() function and so created a subclass of Dash to add the tag above.
                              classDash_responsive(dash.Dash):
def__init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
#Overriding from https://github.com/plotly/dash/blob/master/dash/dash.py#L282defindex(self, *args, **kwargs):
scripts=self._generate_scripts_html()
css=self._generate_css_dist_html()
config=self._generate_config_html()
title=getattr(self, 'title', 'Dash')
return (''' <!DOCTYPE html> <html> <head> <meta charset="UTF-8"/> <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no" /> <title>{}</title> {} </head> <body> <div id="react-entry-point"> <div class="_dash-loading"> Loading... </div> </div> </body> <footer> {} {} </footer> </html> '''.format(title, css, config, scripts))
app=Dash_responsive()
                              More generally, I propose app should have a head() and footer() function to add extra tags to either section which would get added to index()
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