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Loader.js
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Loader.js
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if(!dojo._hasResource["dojox.widget.Loader"]){ //_hasResource checks added by build. Do not use _hasResource directly in your code.
dojo._hasResource["dojox.widget.Loader"] = true;
dojo.provide("dojox.widget.Loader");
dojo.experimental("dojox.widget.Loader");
dojo.require("dijit._Widget");
dojo.require("dijit._Templated");
dojo.declare("dojox.widget.Loader", [dijit._Widget,dijit._Templated], {
// summary: a configurable global xhr-listener to display
// a loading message during running xhr's or to simply provide
// base-level topic to subscribe to for custom loading messages
// loadIcon: String
// location to the icon used.
loadIcon: dojo.moduleUrl("dojox.widget.Loader","icons/loading.gif"),
// loadMessage: String
// string to use for progress loading
loadMessage: 'Loading ...',
// hasVisuals: Boolean
// true to display a fixed loading message in TR cornder, false to unly provide
// "Loader" topic to subscribe to for your own custom loading message.
hasVisuals: true,
// attachToPointer
// true to use visual indicator where cursor is
attachToPointer: true,
// duration: Integer
// time in ms to toggle in/out the visual load indicator
duration: 125,
// _offset: Integer
// distance in px from the mouse pointer to show attachToPointer avatar
_offset: 16,
// holder for mousemove connection
_pointerConnect: null,
_xhrStart: null,
_xhrEnd: null,
templateString: '<div dojoAttachPoint="loadNode" class="dojoxLoader">'
+'<img src="${loadIcon}" class="dojoxLoaderIcon"> <span dojoAttachPoint="loadMessageNode" class="dojoxLoaderMessage"></span>'
+'</div>',
postCreate: function(){
// summary: setup the loader
if(!this.hasVisuals){
this.loadNode.style.display = "none"; // _destroy()?
}else{
if(this.attachToPointer){
dojo.removeClass(this.loadNode,"dojoxLoader");
dojo.addClass(this.loadNode,"dojoxLoaderPointer");
}
this._hide();
}
this._setMessage(this.loadMessage);
// FIXME: create our connections. would be easier, and this might be redundant
// if Deferred published something
this._xhrStart = dojo.connect(dojo,"_ioSetArgs",this,"_show");
this._xhrEnd = dojo.connect(dojo.Deferred.prototype,"_fire",this,"_hide");
},
_setMessage: function(/* String */ message){
// summary: set's the message in the loader
this.loadMessageNode.innerHTML = message;
},
_putLoader: function(/* Event */ e){
// summary: place the floating loading element based on mousemove connection position
dijit.placeOnScreen(this.loadNode,{ x: e.clientX+this._offset, y:e.clientY+this._offset }, ["TL","BR"]);
},
_show: function(){
// summary: publish and show progress indicator
dojo.publish("Loader",[{ message: 'started' }]);
if(this.hasVisuals){
if(this.attachToPointer){
this._pointerConnect = dojo.connect(document,"onmousemove",this,"_putLoader");
}
dojo.fadeIn({ node: this.loadNode, duration:this.duration }).play();
}
},
_hide: function(){
// summary: publish "xhr ended" and hide progress indicator
dojo.publish("Loader",[{ message: 'ended' }]);
if(this.hasVisuals){
if(this.attachPointer){
dojo.disconnect(this._pointerConnect);
}
dojo.fadeOut({ node: this.loadNode, duration:this.duration }).play();
}
}
});
}

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Loader.js (3 KB)

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