Subversion Repositories Applications.papyrus

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();
                }
        }

});

}