Fixes issues in the PR "Button widget data attributes" (#7852)

* fix: fixed ordered attributes handling and improved tests to catch event attributes

* fix: clean up code from testing

* fix: more tests and refactoring

* fix: use lowercase when checking for event attribute prefix

* fix: use lowercase when checking for event attribute prefix

* fix: changed comment wording

* fix: minor refactoring

* refactor: for brevity

core/modules/utils/fakedom.js

@@ -104,7 +104,11 @@ TW_Element.prototype.setAttribute = function(name,value) {
 	if(this.isRaw) {
 		throw "Cannot setAttribute on a raw TW_Element";
 	}
-	this.attributes[name] = value + "";
+	if(name === "style") {
+		this.style = value;
+	} else {
+		this.attributes[name] = value + "";
+	}
 };
 
 TW_Element.prototype.setAttributeNS = function(namespace,name,value) {

core/modules/widgets/widget.js

@@ -415,19 +415,30 @@ Widget.prototype.getAttribute = function(name,defaultText) {
 /*
 Assign the common attributes of the widget to a domNode
 options include:
-sourcePrefix: prefix of attributes that are to be directly assigned (defaults to the emtpy string meaning all attributes)
+sourcePrefix: prefix of attributes that are to be directly assigned (defaults to the empty string meaning all attributes)
 destPrefix: prefix to be applied to attribute names that are to be directly assigned (defaults to the emtpy string which means no prefix is added)
 changedAttributes: hashmap by attribute name of attributes to process (if missing, process all attributes)
 excludeEventAttributes: ignores attributes whose name would begin with "on"
 */
 Widget.prototype.assignAttributes = function(domNode,options) {
-	var self = this;
 	options = options || {};
-	var changedAttributes = options.changedAttributes || this.attributes;
-	var sourcePrefix = options.sourcePrefix || "";
-	var destPrefix = options.destPrefix || "";
-	var EVENT_ATTRIBUTE_PREFIX = "on";
+	var self = this,
+		changedAttributes = options.changedAttributes || this.attributes,
+		sourcePrefix = options.sourcePrefix || "",
+		destPrefix = options.destPrefix || "",
+		EVENT_ATTRIBUTE_PREFIX = "on";
 	var assignAttribute = function(name,value) {
+		// Process any style attributes before considering sourcePrefix and destPrefix
+		if(name.substr(0,6) === "style." && name.length > 6) {
+			domNode.style[$tw.utils.unHyphenateCss(name.substr(6))] = value;
+			return;
+		}
+		// Check if the sourcePrefix is a match
+		if(name.substr(0,sourcePrefix.length) === sourcePrefix) {
+			name = destPrefix + name.substr(sourcePrefix.length);
+		} else {
+			value = undefined;
+		}
 		// Check for excluded attribute names
 		if(options.excludeEventAttributes && name.substr(0,2).toLowerCase() === EVENT_ATTRIBUTE_PREFIX) {
 			value = undefined;
@@ -445,17 +456,20 @@ Widget.prototype.assignAttributes = function(domNode,options) {
 			} catch(e) {
 			}
 		}
+	};
+	// If the parse tree node has the orderedAttributes property then use that order
+	if(this.parseTreeNode.orderedAttributes) {
+		$tw.utils.each(this.parseTreeNode.orderedAttributes,function(attribute,index) {
+			if(attribute.name in changedAttributes) {
+				assignAttribute(attribute.name,self.getAttribute(attribute.name));
+			}
+		});
+	// Otherwise update each changed attribute irrespective of order
+	} else {
+		$tw.utils.each(changedAttributes,function(value,name) {
+			assignAttribute(name,self.getAttribute(name));
+		});	
 	}
-	$tw.utils.each(changedAttributes,function(value,name) {
-		value = self.getAttribute(name);
-		// Check for a prefixed attribute
-		if(name.substr(0,sourcePrefix.length) === sourcePrefix) {
-			domNode.setAttribute(destPrefix + name.substr(sourcePrefix.length),value);
-		// Check for a style attribute
-		} else if(name.substr(0,6) === "style." && name.length > 6) {
-			domNode.style[$tw.utils.unHyphenateCss(name.substr(6))] = value;
-		}
-	});
 };
 
 /*

editions/test/tiddlers/tests/data/widgets/DataAttributes/ButtonWidget-DataAttributes.tid

@@ -6,7 +6,7 @@ tags: [[$:/tags/wiki-test-spec]]
 title: Output
 
 \whitespace trim
-<$button tag="div" class="myclass" data-title="mytiddler" style.color="red">
+<$button tag="div" class="myclass" data-title="mytiddler" style.color="red" onclick="clicked">
 my tiddler
 </$button>
 <$button tag="div" class="myclass" data-title={{Temp}} style.color={{{ [[Temp]get[color]] }}}>

editions/test/tiddlers/tests/data/widgets/DataAttributes/CheckboxWidget-DataAttributes.tid

@@ -6,7 +6,7 @@ tags: [[$:/tags/wiki-test-spec]]
 title: Output
 
 \whitespace trim
-<$checkbox tag="done" data-title={{Temp}} style.color={{{ [[Temp]get[color]] }}}> Is it done?</$checkbox>
+<$checkbox tag="done" data-title={{Temp}} style.color={{{ [[Temp]get[color]] }}} onclick="clicked"> Is it done?</$checkbox>
 +
 title: Actions
 

editions/test/tiddlers/tests/data/widgets/DataAttributes/DraggableWidget-DataAttributes.tid

@@ -6,7 +6,7 @@ tags: [[$:/tags/wiki-test-spec]]
 title: Output
 
 \whitespace trim
-<$draggable tag="div" class="myclass" data-title="mytiddler" style.color="red">
+<$draggable tag="div" class="myclass" data-title="mytiddler" style.color="red" onclick="clicked">
 my tiddler
 </$draggable>
 <$draggable tag="div" class="myclass" data-title={{Temp}} style.color={{{ [[Temp]get[color]] }}}>

editions/test/tiddlers/tests/data/widgets/DataAttributes/DroppableWidget-DataAttributes.tid

@@ -6,7 +6,7 @@ tags: [[$:/tags/wiki-test-spec]]
 title: Output
 
 \whitespace trim
-<$droppable tag="div" class="myclass" data-title="mytiddler" style.color="red">
+<$droppable tag="div" class="myclass" data-title="mytiddler" style.color="red" onclick="clicked">
 my tiddler
 </$droppable>
 <$droppable tag="div" class="myclass" data-title={{Temp}} style.color={{{ [[Temp]get[color]] }}}>

editions/test/tiddlers/tests/data/widgets/DataAttributes/LinkWidget-DataAttributes.tid

@@ -6,7 +6,7 @@ tags: [[$:/tags/wiki-test-spec]]
 title: Output
 
 \whitespace trim
-<$link data-id="mytiddler" style.color="red" to="Temp">
+<$link data-id="mytiddler" style.color="red" to="Temp" onclick="clicked">
 link to Temp
 </$link>
 <$link tag="button" data-id={{Temp}} style.color={{{ [[Temp]get[color]] }}} to="SomeTiddler">

editions/test/tiddlers/tests/data/widgets/DataAttributes/OrderedStyleAttributes.tid

@@ -0,0 +1,15 @@
+title: Widgets/DataAttributes/OrderedStyleAttributes
+description: Ordered style attributes
+type: text/vnd.tiddlywiki-multiple
+tags: [[$:/tags/wiki-test-spec]]
+
+title: Output
+
+\whitespace trim
+<div style="background:red;color:blue;" style.background="green">
+hello
+</div>
++
+title: ExpectedResult
+
+<p><div style="background:green;color:blue;">hello</div></p>

editions/test/tiddlers/tests/data/widgets/DataAttributes/SelectWidget-DataAttributes.tid

@@ -6,7 +6,7 @@ tags: [[$:/tags/wiki-test-spec]]
 title: Output
 
 \whitespace trim
-<$select tiddler='New Tiddler' field='text' default='Choose a new text' data-title={{Temp}} style.color={{{ [[Temp]get[color]] }}}>
+<$select tiddler='New Tiddler' field='text' default='Choose a new text' data-title={{Temp}} style.color={{{ [[Temp]get[color]] }}} onclick="clicked">
 <option disabled>Choose a new text</option>
 <option>A Tale of Two Cities</option>
 <option>A New Kind of Science</option>

editions/test/tiddlers/tests/data/widgets/ElementWidgetEventAttributes.tid

@@ -0,0 +1,15 @@
+title: Widgets/ElementWidgetEventAttributes
+description: Element widget should not support event attributes starting with "on"
+type: text/vnd.tiddlywiki-multiple
+tags: [[$:/tags/wiki-test-spec]]
+
+title: Output
+
+\whitespace trim
+<div class="hello" onclick="clicked">
+TiddlyWiki
+</div>
++
+title: ExpectedResult
+
+<p><div class="hello">TiddlyWiki</div></p>

editions/test/tiddlers/tests/data/widgets/ElementWidgetStyleAttributes.tid

@@ -0,0 +1,15 @@
+title: Widgets/ElementWidgetStyleAttributes
+description: Element widget should support style.* attributes
+type: text/vnd.tiddlywiki-multiple
+tags: [[$:/tags/wiki-test-spec]]
+
+title: Output
+
+\whitespace trim
+<div class="hello" onclick="clicked" style.color="blue" style.color="red" style.background="yellow">
+TiddlyWiki
+</div>
++
+title: ExpectedResult
+
+<p><div class="hello" style="color:red;background:yellow;">TiddlyWiki</div></p>