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authormensonge <mensonge@b3834d28-1941-0410-a4f8-b48e95affb8f>2008-11-13 09:49:11 +0000
committermensonge <mensonge@b3834d28-1941-0410-a4f8-b48e95affb8f>2008-11-13 09:49:11 +0000
commite44a7e37b6c7b5961adaffc62b9042b8d442938e (patch)
tree95b67c356e93163467db2451f2b8cce84ed5d582 /includes/js/dojox/dtl/render/html.js
parenta62b9742ee5e28bcec6872d88f50f25b820914f6 (diff)
downloadsemanticscuttle-e44a7e37b6c7b5961adaffc62b9042b8d442938e.tar.gz
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New feature: basic Ajax suggestion for tags and implementation of Dojo toolkit
git-svn-id: https://semanticscuttle.svn.sourceforge.net/svnroot/semanticscuttle/trunk@151 b3834d28-1941-0410-a4f8-b48e95affb8f
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+if(!dojo._hasResource["dojox.dtl.render.html"]){ //_hasResource checks added by build. Do not use _hasResource directly in your code.
+dojo._hasResource["dojox.dtl.render.html"] = true;
+dojo.provide("dojox.dtl.render.html");
+dojo.require("dojox.dtl.Context");
+
+dojox.dtl.render.html.sensitivity = {
+ // summary:
+ // Set conditions under which to buffer changes
+ // description:
+ // Necessary if you make a lot of changes to your template.
+ // What happens is that the entire node, from the attached DOM Node
+ // down gets swapped with a clone, and until the entire rendering
+ // is complete, we don't replace the clone again. In this way, renders are
+ // "batched".
+ //
+ // But, if we're only changing a small number of nodes, we might no want to buffer at all.
+ // The higher numbers mean that even small changes will result in buffering.
+ // Each higher level includes the lower levels.
+ NODE: 1, // If a node changes, implement buffering
+ ATTRIBUTE: 2, // If an attribute or node changes, implement buffering
+ TEXT: 3 // If any text at all changes, implement buffering
+}
+dojox.dtl.render.html.Render = function(/*DOMNode?*/ attachPoint, /*dojox.dtl.HtmlTemplate?*/ tpl){
+ this._tpl = tpl;
+ this.domNode = attachPoint;
+ this._swap = dojo.hitch(this, function(){
+ // summary: Swaps the node out the first time the DOM is changed
+ // description: Gets swapped back it at end of render
+ if(this.domNode === this._tpl.getRootNode()){
+ var frag = this.domNode;
+ this.domNode = this.domNode.cloneNode(true);
+ frag.parentNode.replaceChild(this.domNode, frag);
+ }
+ });
+}
+dojo.extend(dojox.dtl.render.html.Render, {
+ sensitivity: dojox.dtl.render.html.sensitivity,
+ setAttachPoint: function(/*Node*/ node){
+ this.domNode = node;
+ },
+ render: function(/*Object*/ context, /*dojox.dtl.HtmlTemplate?*/ tpl, /*dojox.dtl.HtmlBuffer?*/ buffer){
+ if(!this.domNode){
+ throw new Error("You cannot use the Render object without specifying where you want to render it");
+ }
+
+ tpl = tpl || this._tpl;
+ buffer = buffer || tpl.getBuffer();
+ context = context || new dojox.dtl.Context();
+
+ if(context.getThis() && context.getThis().buffer == this.sensitivity.NODE){
+ var onAddNode = dojo.connect(buffer, "onAddNode", this, "_swap");
+ var onRemoveNode = dojo.connect(buffer, "onRemoveNode", this, "_swap");
+ }
+
+ if(this._tpl && this._tpl !== tpl){
+ this._tpl.unrender(context, buffer);
+ }
+ this._tpl = tpl;
+
+ var frag = tpl.render(context, buffer).getParent();
+ if(!frag){
+ throw new Error("Rendered template does not have a root node");
+ }
+
+ dojo.disconnect(onAddNode);
+ dojo.disconnect(onRemoveNode);
+
+ if(this.domNode !== frag){
+ this.domNode.parentNode.replaceChild(frag, this.domNode);
+ dojo._destroyElement(this.domNode);
+ this.domNode = frag;
+ }
+ }
+});
+
+}