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Add namespace support to the element renderer

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This allows us to create SVG elements with the correct namespace, which
allows us to have inline SVG images (coming up next)
This commit is contained in:
Jeremy Ruston 2013-05-15 18:44:23 +01:00
parent dd2a7199f6
commit 0a3389c277
1 changed files with 17 additions and 2 deletions
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19
core/modules/rendertree/renderers/element.js
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@ -49,6 +49,17 @@ var ElementRenderer = function(renderTree,parentRenderer,parseTreeNode) {
if(!this.widgetClasses) {
ElementRenderer.prototype.widgetClasses = $tw.modules.applyMethods("widget");
}
// Select the namespace for the tag
var tagNameSpaces = {
svg: "http://www.w3.org/2000/svg"
};
this.namespace = tagNameSpaces[this.parseTreeNode.tag];
if(this.namespace) {
this.context = this.context || {};
this.context.namespace = this.namespace;
} else {
this.namespace = this.renderTree.getContextVariable(this.parentRenderer,"namespace","http://www.w3.org/1999/xhtml");
}
// Get the context tiddler title
this.tiddlerTitle = this.renderTree.getContextVariable(this.parentRenderer,"tiddlerTitle");
// Compute our dependencies
@ -161,7 +172,7 @@ ElementRenderer.prototype.renderInDom = function() {
// Check if our widget is providing an element
if(this.widget.tag) {
// Create the element
this.domNode = document.createElement(this.widget.tag);
this.domNode = document.createElementNS(this.namespace,this.widget.tag);
// Assign any specified event handlers
$tw.utils.addEventListeners(this.domNode,this.widget.events);
// Assign the attributes
@ -196,7 +207,11 @@ ElementRenderer.prototype.assignAttributes = function() {
self.domNode.style[$tw.utils.unHyphenateCss(p)] = v[p];
}
} else {
self.domNode.setAttribute(a,v);
// Setting certain attributes can cause a DOM error (eg xmlns on the svg element)
try {
self.domNode.setAttributeNS(null,a,v);
} catch(e) {
}
}
}
});