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root / trunk / web / dojo / dojox / layout / ResizeHandle.js

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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["dojox.layout.ResizeHandle"]){
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dojo._hasResource["dojox.layout.ResizeHandle"]=true;
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dojo.provide("dojox.layout.ResizeHandle");
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dojo.experimental("dojox.layout.ResizeHandle");
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dojo.require("dijit._Widget");
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dojo.require("dijit._Templated");
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dojo.require("dojo.fx");
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dojo.require("dojo.window");
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dojo.declare("dojox.layout.ResizeHandle",[dijit._Widget,dijit._Templated],{targetId:"",targetContainer:null,resizeAxis:"xy",activeResize:false,activeResizeClass:"dojoxResizeHandleClone",animateSizing:true,animateMethod:"chain",animateDuration:225,minHeight:100,minWidth:100,constrainMax:false,maxHeight:0,maxWidth:0,fixedAspect:false,intermediateChanges:false,startTopic:"/dojo/resize/start",endTopic:"/dojo/resize/stop",templateString:"<div dojoAttachPoint=\"resizeHandle\" class=\"dojoxResizeHandle\"><div></div></div>",postCreate:function(){
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this.connect(this.resizeHandle,"onmousedown","_beginSizing");
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if(!this.activeResize){
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this._resizeHelper=dijit.byId("dojoxGlobalResizeHelper");
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if(!this._resizeHelper){
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this._resizeHelper=new dojox.layout._ResizeHelper({id:"dojoxGlobalResizeHelper"}).placeAt(dojo.body());
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dojo.addClass(this._resizeHelper.domNode,this.activeResizeClass);
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}
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}else{
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this.animateSizing=false;
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}
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if(!this.minSize){
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this.minSize={w:this.minWidth,h:this.minHeight};
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}
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if(this.constrainMax){
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this.maxSize={w:this.maxWidth,h:this.maxHeight};
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}
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this._resizeX=this._resizeY=false;
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var _1=dojo.partial(dojo.addClass,this.resizeHandle);
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switch(this.resizeAxis.toLowerCase()){
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case "xy":
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this._resizeX=this._resizeY=true;
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_1("dojoxResizeNW");
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break;
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case "x":
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this._resizeX=true;
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_1("dojoxResizeW");
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break;
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case "y":
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this._resizeY=true;
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_1("dojoxResizeN");
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break;
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}
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},_beginSizing:function(e){
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if(this._isSizing){
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return false;
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}
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dojo.publish(this.startTopic,[this]);
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this.targetWidget=dijit.byId(this.targetId);
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this.targetDomNode=this.targetWidget?this.targetWidget.domNode:dojo.byId(this.targetId);
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if(this.targetContainer){
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this.targetDomNode=this.targetContainer;
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}
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if(!this.targetDomNode){
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return false;
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}
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if(!this.activeResize){
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var c=dojo.position(this.targetDomNode,true);
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this._resizeHelper.resize({l:c.x,t:c.y,w:c.w,h:c.h});
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this._resizeHelper.show();
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}
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this._isSizing=true;
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this.startPoint={x:e.clientX,y:e.clientY};
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var mb=this.targetWidget?dojo.marginBox(this.targetDomNode):dojo.contentBox(this.targetDomNode);
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this.startSize={w:mb.w,h:mb.h};
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if(this.fixedAspect){
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var _2,_3;
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if(mb.w>mb.h){
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_2="w";
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_3=mb.w/mb.h;
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}else{
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_2="h";
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_3=mb.h/mb.w;
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}
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this._aspect={prop:_2};
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this._aspect[_2]=_3;
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}
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this._pconnects=[];
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this._pconnects.push(dojo.connect(dojo.doc,"onmousemove",this,"_updateSizing"));
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this._pconnects.push(dojo.connect(dojo.doc,"onmouseup",this,"_endSizing"));
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dojo.stopEvent(e);
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},_updateSizing:function(e){
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if(this.activeResize){
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this._changeSizing(e);
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}else{
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var _4=this._getNewCoords(e);
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if(_4===false){
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return;
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}
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this._resizeHelper.resize(_4);
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}
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e.preventDefault();
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},_getNewCoords:function(e){
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try{
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if(!e.clientX||!e.clientY){
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return false;
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}
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}
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catch(e){
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return false;
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}
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this._activeResizeLastEvent=e;
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var dx=(this.isLeftToRight()?this.startPoint.x-e.clientX:e.clientX-this.startPoint.x),dy=this.startPoint.y-e.clientY,_5=this.startSize.w-(this._resizeX?dx:0),_6=this.startSize.h-(this._resizeY?dy:0);
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return this._checkConstraints(_5,_6);
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},_checkConstraints:function(_7,_8){
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if(this.minSize){
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var tm=this.minSize;
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if(_7<tm.w){
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_7=tm.w;
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}
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if(_8<tm.h){
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_8=tm.h;
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}
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}
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if(this.constrainMax&&this.maxSize){
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var ms=this.maxSize;
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if(_7>ms.w){
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_7=ms.w;
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}
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if(_8>ms.h){
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_8=ms.h;
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}
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}
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if(this.fixedAspect){
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var ta=this._aspect[this._aspect.prop];
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if(_7<_8){
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_8=_7*ta;
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}else{
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if(_8<_7){
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_7=_8*ta;
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}
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}
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}
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return {w:_7,h:_8};
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},_changeSizing:function(e){
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var _9=this._getNewCoords(e);
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if(_9===false){
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return;
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}
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if(this.targetWidget&&dojo.isFunction(this.targetWidget.resize)){
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this.targetWidget.resize(_9);
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}else{
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if(this.animateSizing){
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var _a=dojo.fx[this.animateMethod]([dojo.animateProperty({node:this.targetDomNode,properties:{width:{start:this.startSize.w,end:_9.w}},duration:this.animateDuration}),dojo.animateProperty({node:this.targetDomNode,properties:{height:{start:this.startSize.h,end:_9.h}},duration:this.animateDuration})]);
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_a.play();
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}else{
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dojo.style(this.targetDomNode,{width:_9.w+"px",height:_9.h+"px"});
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}
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}
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if(this.intermediateChanges){
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this.onResize(e);
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}
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},_endSizing:function(e){
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dojo.forEach(this._pconnects,dojo.disconnect);
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var _b=dojo.partial(dojo.publish,this.endTopic,[this]);
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if(!this.activeResize){
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this._resizeHelper.hide();
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this._changeSizing(e);
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setTimeout(_b,this.animateDuration+15);
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}else{
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_b();
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}
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this._isSizing=false;
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this.onResize(e);
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},onResize:function(e){
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}});
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dojo.declare("dojox.layout._ResizeHelper",dijit._Widget,{show:function(){
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dojo.fadeIn({node:this.domNode,duration:120,beforeBegin:function(n){
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dojo.style(n,"display","");
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}}).play();
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},hide:function(){
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dojo.fadeOut({node:this.domNode,duration:250,onEnd:function(n){
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dojo.style(n,"display","none");
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}}).play();
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},resize:function(_c){
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dojo.marginBox(this.domNode,_c);
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}});
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}