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129 lines
3.5 KiB
JavaScript
129 lines
3.5 KiB
JavaScript
14 years ago
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/*
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Copyright (c) 2004-2010, The Dojo Foundation All Rights Reserved.
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Available via Academic Free License >= 2.1 OR the modified BSD license.
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see: http://dojotoolkit.org/license for details
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*/
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if(!dojo._hasResource["dojo.dnd.Manager"]){
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dojo._hasResource["dojo.dnd.Manager"]=true;
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dojo.provide("dojo.dnd.Manager");
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dojo.require("dojo.dnd.common");
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dojo.require("dojo.dnd.autoscroll");
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dojo.require("dojo.dnd.Avatar");
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dojo.declare("dojo.dnd.Manager",null,{constructor:function(){
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this.avatar=null;
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this.source=null;
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this.nodes=[];
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this.copy=true;
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this.target=null;
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this.canDropFlag=false;
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this.events=[];
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},OFFSET_X:16,OFFSET_Y:16,overSource:function(_1){
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if(this.avatar){
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this.target=(_1&&_1.targetState!="Disabled")?_1:null;
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this.canDropFlag=Boolean(this.target);
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this.avatar.update();
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}
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dojo.publish("/dnd/source/over",[_1]);
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},outSource:function(_2){
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if(this.avatar){
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if(this.target==_2){
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this.target=null;
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this.canDropFlag=false;
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this.avatar.update();
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dojo.publish("/dnd/source/over",[null]);
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}
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}else{
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dojo.publish("/dnd/source/over",[null]);
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}
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},startDrag:function(_3,_4,_5){
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this.source=_3;
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this.nodes=_4;
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this.copy=Boolean(_5);
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this.avatar=this.makeAvatar();
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dojo.body().appendChild(this.avatar.node);
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dojo.publish("/dnd/start",[_3,_4,this.copy]);
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this.events=[dojo.connect(dojo.doc,"onmousemove",this,"onMouseMove"),dojo.connect(dojo.doc,"onmouseup",this,"onMouseUp"),dojo.connect(dojo.doc,"onkeydown",this,"onKeyDown"),dojo.connect(dojo.doc,"onkeyup",this,"onKeyUp"),dojo.connect(dojo.doc,"ondragstart",dojo.stopEvent),dojo.connect(dojo.body(),"onselectstart",dojo.stopEvent)];
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var c="dojoDnd"+(_5?"Copy":"Move");
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dojo.addClass(dojo.body(),c);
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},canDrop:function(_6){
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var _7=Boolean(this.target&&_6);
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if(this.canDropFlag!=_7){
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this.canDropFlag=_7;
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this.avatar.update();
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}
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},stopDrag:function(){
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dojo.removeClass(dojo.body(),"dojoDndCopy");
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dojo.removeClass(dojo.body(),"dojoDndMove");
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dojo.forEach(this.events,dojo.disconnect);
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this.events=[];
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this.avatar.destroy();
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this.avatar=null;
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this.source=this.target=null;
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this.nodes=[];
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},makeAvatar:function(){
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return new dojo.dnd.Avatar(this);
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},updateAvatar:function(){
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this.avatar.update();
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},onMouseMove:function(e){
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var a=this.avatar;
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if(a){
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dojo.dnd.autoScrollNodes(e);
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var s=a.node.style;
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s.left=(e.pageX+this.OFFSET_X)+"px";
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s.top=(e.pageY+this.OFFSET_Y)+"px";
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var _8=Boolean(this.source.copyState(dojo.isCopyKey(e)));
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if(this.copy!=_8){
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this._setCopyStatus(_8);
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}
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}
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},onMouseUp:function(e){
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if(this.avatar){
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if(this.target&&this.canDropFlag){
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var _9=Boolean(this.source.copyState(dojo.isCopyKey(e))),_a=[this.source,this.nodes,_9,this.target,e];
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dojo.publish("/dnd/drop/before",_a);
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dojo.publish("/dnd/drop",_a);
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}else{
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dojo.publish("/dnd/cancel");
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}
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this.stopDrag();
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}
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},onKeyDown:function(e){
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if(this.avatar){
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switch(e.keyCode){
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case dojo.keys.CTRL:
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var _b=Boolean(this.source.copyState(true));
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if(this.copy!=_b){
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this._setCopyStatus(_b);
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}
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break;
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case dojo.keys.ESCAPE:
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dojo.publish("/dnd/cancel");
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this.stopDrag();
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break;
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}
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}
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},onKeyUp:function(e){
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if(this.avatar&&e.keyCode==dojo.keys.CTRL){
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var _c=Boolean(this.source.copyState(false));
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if(this.copy!=_c){
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this._setCopyStatus(_c);
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}
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}
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},_setCopyStatus:function(_d){
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this.copy=_d;
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this.source._markDndStatus(this.copy);
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this.updateAvatar();
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dojo.removeClass(dojo.body(),"dojoDnd"+(this.copy?"Move":"Copy"));
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dojo.addClass(dojo.body(),"dojoDnd"+(this.copy?"Copy":"Move"));
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}});
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dojo.dnd._manager=null;
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dojo.dnd.manager=function(){
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if(!dojo.dnd._manager){
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dojo.dnd._manager=new dojo.dnd.Manager();
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}
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return dojo.dnd._manager;
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};
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}
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