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https://github.com/Jermolene/TiddlyWiki5
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Extends element widget with support for CSS custom properties (#8699)
* Extend element widget with support for CSS custom properties. * chore: added tests * chore: code style * docs: added documentation for support for CSS custom properties * docs: added documentation for support for CSS custom properties
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@ -56,23 +56,14 @@ Object.defineProperty(TW_TextNode.prototype, "formattedTextContent", {
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}
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}
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});
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});
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var TW_Element = function(tag,namespace) {
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var TW_Style = function(el) {
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bumpSequenceNumber(this);
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// Define the internal style object
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this.isTiddlyWikiFakeDom = true;
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var styleObject = {
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this.tag = tag;
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// Method to get the entire style object
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this.attributes = {};
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this.isRaw = false;
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this.children = [];
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this._style = {};
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this.namespaceURI = namespace || "http://www.w3.org/1999/xhtml";
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};
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Object.setPrototypeOf(TW_Element.prototype,TW_Node.prototype);
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Object.defineProperty(TW_Element.prototype, "style", {
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get: function() {
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get: function() {
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return this._style;
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return el._style;
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},
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},
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// Method to set styles using a string (e.g. "color:red; background-color:blue;")
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set: function(str) {
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set: function(str) {
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var self = this;
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var self = this;
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str = str || "";
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str = str || "";
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@ -81,11 +72,48 @@ Object.defineProperty(TW_Element.prototype, "style", {
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name = $tw.utils.trim(parts[0]),
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name = $tw.utils.trim(parts[0]),
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value = $tw.utils.trim(parts[1]);
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value = $tw.utils.trim(parts[1]);
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if(name && value) {
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if(name && value) {
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self._style[$tw.utils.convertStyleNameToPropertyName(name)] = value;
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el._style[$tw.utils.convertStyleNameToPropertyName(name)] = value;
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}
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}
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});
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});
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},
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// Method to set a specific property without transforming the property name, such as a custom property
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setProperty: function(name, value) {
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el._style[name] = value;
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}
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};
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// Return a Proxy to handle direct access to individual style properties
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return new Proxy(styleObject, {
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get: function(target, property) {
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// If the property exists on styleObject, return it (get, set, setProperty methods)
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if (property in target) {
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return target[property];
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}
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// Otherwise, return the corresponding property from _style
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return el._style[$tw.utils.convertStyleNameToPropertyName(property)] || "";
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},
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set: function(target, property, value) {
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// Set the property in _style
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el._style[$tw.utils.convertStyleNameToPropertyName(property)] = value;
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return true;
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}
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}
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});
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});
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};
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var TW_Element = function(tag, namespace) {
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bumpSequenceNumber(this);
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this.isTiddlyWikiFakeDom = true;
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this.tag = tag;
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this.attributes = {};
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this.isRaw = false;
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this.children = [];
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this._style = {}; // Internal style object
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this.style = new TW_Style(this); // Proxy for style management
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this.namespaceURI = namespace || "http://www.w3.org/1999/xhtml";
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};
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Object.setPrototypeOf(TW_Element.prototype,TW_Node.prototype);
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Object.defineProperty(TW_Element.prototype, "nodeType", {
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Object.defineProperty(TW_Element.prototype, "nodeType", {
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get: function() {
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get: function() {
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@ -105,7 +133,7 @@ TW_Element.prototype.setAttribute = function(name,value) {
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throw "Cannot setAttribute on a raw TW_Element";
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throw "Cannot setAttribute on a raw TW_Element";
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}
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}
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if(name === "style") {
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if(name === "style") {
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this.style = value;
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this.style.set(value);
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} else {
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} else {
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this.attributes[name] = value + "";
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this.attributes[name] = value + "";
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}
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}
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@ -428,6 +428,11 @@ Widget.prototype.assignAttributes = function(domNode,options) {
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destPrefix = options.destPrefix || "",
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destPrefix = options.destPrefix || "",
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EVENT_ATTRIBUTE_PREFIX = "on";
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EVENT_ATTRIBUTE_PREFIX = "on";
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var assignAttribute = function(name,value) {
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var assignAttribute = function(name,value) {
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// Process any CSS custom properties
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if(name.substr(0,2) === "--" && name.length > 2) {
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domNode.style.setProperty(name,value);
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return;
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}
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// Process any style attributes before considering sourcePrefix and destPrefix
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// Process any style attributes before considering sourcePrefix and destPrefix
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if(name.substr(0,6) === "style." && name.length > 6) {
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if(name.substr(0,6) === "style." && name.length > 6) {
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domNode.style[$tw.utils.unHyphenateCss(name.substr(6))] = value;
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domNode.style[$tw.utils.unHyphenateCss(name.substr(6))] = value;
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@ -0,0 +1,15 @@
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title: Widgets/ElementWidgetCSSCustomProps
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description: Element widget should support CSS custom properties
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type: text/vnd.tiddlywiki-multiple
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tags: [[$:/tags/wiki-test-spec]]
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title: Output
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\whitespace trim
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<div class="hello" onclick="clicked" style.color="blue" style.color="red" style.background="yellow" --bg-color="purple">
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TiddlyWiki
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</div>
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+
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title: ExpectedResult
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<p><div class="hello" style="color:red;background:yellow;--bg-color:purple;">TiddlyWiki</div></p>
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@ -1,6 +1,6 @@
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caption: HTML
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caption: HTML
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created: 20131205160816081
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created: 20131205160816081
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modified: 20230615060119987
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modified: 20241025073517909
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tags: WikiText
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tags: WikiText
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title: HTML in WikiText
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title: HTML in WikiText
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type: text/vnd.tiddlywiki
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type: text/vnd.tiddlywiki
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@ -68,13 +68,13 @@ In an extension of conventional HTML syntax, attributes of elements and widgets
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!! Style Attributes
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!! Style Attributes
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<<.from-version "5.2.2">> TiddlyWiki supports the usual HTML ''style'' attribute for assigning CSS styles to elements:
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TiddlyWiki supports the usual HTML ''style'' attribute for assigning CSS styles to elements:
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```
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```
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<div style="color:red;">Hello</div>
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<div style="color:red;">Hello</div>
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```
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```
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In an extension to HTML, TiddlyWiki also supports accessing individual CSS styles as independent attributes. For example:
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<<.from-version "5.2.2">> In an extension to HTML, TiddlyWiki also supports accessing individual CSS styles as independent attributes. For example:
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```
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```
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<div style.color="red">Hello</div>
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<div style.color="red">Hello</div>
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@ -86,10 +86,8 @@ The advantage of this syntax is that it simplifies assigning computed values to
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<div style.color={{!!color}}>Hello</div>
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<div style.color={{!!color}}>Hello</div>
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```
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```
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<<.from-version "5.3.6">> TiddlyWiki also supports setting [[CSS custom properties|https://developer.mozilla.org/en-US/docs/Web/CSS/Using_CSS_custom_properties]] as independent attributes. For example:
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```
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<div --bg-color={{{ [[red]] }}}>Hello</div>
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```
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