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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;
}
}
});
}
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