root / trunk / web / dojo / dojox / dnd / BoundingBoxController.js
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| 1 | 9 | andrej.cim | /*
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| 2 | Copyright (c) 2004-2010, The Dojo Foundation All Rights Reserved.
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| 3 | Available via Academic Free License >= 2.1 OR the modified BSD license.
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| 4 | see: http://dojotoolkit.org/license for details
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| 5 | */
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| 6 | |||
| 7 | |||
| 8 | if(!dojo._hasResource["dojox.dnd.BoundingBoxController"]){ |
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| 9 | dojo._hasResource["dojox.dnd.BoundingBoxController"]=true; |
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| 10 | dojo.provide("dojox.dnd.BoundingBoxController");
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| 11 | dojo.declare("dojox.dnd.BoundingBoxController",null,{_startX:null,_startY:null,_endX:null,_endY:null,constructor:function(_1,_2){ |
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| 12 | this.events=[dojo.connect(dojo.doc,"onmousedown",this,"_onMouseDown"),dojo.connect(dojo.doc,"onmouseup",this,"_onMouseUp"),dojo.connect(dojo.doc,"onscroll",this,"_finishSelecting")]; |
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| 13 | this.subscriptions=[dojo.subscribe("/dojox/bounding/cancel",this,"_finishSelecting")]; |
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| 14 | dojo.forEach(_1,function(_3){
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| 15 | if(_3.selectByBBox){
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| 16 | this.subscriptions.push(dojo.subscribe("/dojox/dnd/bounding",_3,"selectByBBox")); |
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| 17 | } |
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| 18 | },this);
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| 19 | this.domNode=dojo.byId(_2);
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| 20 | dojo.style(this.domNode,{position:"absolute",display:"none"}); |
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| 21 | },destroy:function(){ |
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| 22 | dojo.forEach(this.events,dojo.disconnect);
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| 23 | dojo.forEach(this.subscriptions,dojo.unsubscribe);
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| 24 | this.domNode=null; |
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| 25 | },boundingBoxIsViable:function(){ |
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| 26 | return true; |
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| 27 | },_onMouseDown:function(_4){ |
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| 28 | if(dojo.mouseButtons.isLeft(_4)){
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| 29 | if(this._startX===null){ |
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| 30 | this._startX=_4.clientX;
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| 31 | this._startY=_4.clientY;
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| 32 | } |
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| 33 | this.events.push(dojo.connect(dojo.doc,"onmousemove",this,"_onMouseMove")); |
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| 34 | } |
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| 35 | },_onMouseMove:function(_5){ |
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| 36 | this._endX=_5.clientX;
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| 37 | this._endY=_5.clientY;
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| 38 | this._drawBoundingBox();
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| 39 | },_onMouseUp:function(_6){ |
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| 40 | if(this._endX!==null&&this.boundingBoxIsViable()){ |
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| 41 | dojo.publish("/dojox/dnd/bounding",[this._startX,this._startY,this._endX,this._endY]); |
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| 42 | } |
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| 43 | this._finishSelecting();
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| 44 | },_finishSelecting:function(){ |
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| 45 | if(this._startX!==null){ |
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| 46 | dojo.disconnect(this.events.pop());
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| 47 | dojo.style(this.domNode,"display","none"); |
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| 48 | this._startX=this._endX=null; |
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| 49 | } |
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| 50 | },_drawBoundingBox:function(){ |
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| 51 | dojo.style(this.domNode,{left:Math.min(this._startX,this._endX)+"px",top:Math.min(this._startY,this._endY)+"px",width:Math.abs(this._startX-this._endX)+"px",height:Math.abs(this._startY-this._endY)+"px",display:""}); |
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| 52 | }}); |
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| 53 | } |