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root / trunk / web / dojo / dojox / mobile / app / ImageThumbView.js @ 13

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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.mobile.app.ImageThumbView"]){
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dojo._hasResource["dojox.mobile.app.ImageThumbView"]=true;
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dojo.provide("dojox.mobile.app.ImageThumbView");
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dojo.experimental("dojox.mobile.app.ImageThumbView");
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dojo.require("dijit._Widget");
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dojo.require("dojo.string");
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dojo.declare("dojox.mobile.app.ImageThumbView",dijit._Widget,{items:null,urlParam:"url",itemTemplate:"<div class=\"mblThumbInner\">"+"<div class=\"mblThumbOverlay\"></div>"+"<div class=\"mblThumbMask\">"+"<div class=\"mblThumbSrc\" style=\"background-image:url(${url})\"></div>"+"</div>"+"</div>",minPadding:5,maxPerRow:3,baseClass:"mblImageThumbView",selectedIndex:-1,cache:null,postCreate:function(){
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this.inherited(arguments);
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var _1=this;
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var _2="mblThumbHover";
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this.addThumb=dojo.hitch(this,this.addThumb);
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this.handleImgLoad=dojo.hitch(this,this.handleImgLoad);
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this._onLoadImages={};
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this.cache=[];
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this.visibleImages=[];
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this.connect(this.domNode,"onclick",function(_3){
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var _4=_1._getItemNodeFromEvent(_3);
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if(_4){
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_1.onSelect(_4._item,_4._index,_1.items);
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dojo.query(".selected",this.domNode).removeClass("selected");
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dojo.addClass(_4,"selected");
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}
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});
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this.resize();
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this.render();
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},onSelect:function(_5,_6,_7){
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},_setItemsAttr:function(_8){
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this.items=_8||[];
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this.render();
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},_getItemNode:function(_9){
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while(_9&&!dojo.hasClass(_9,"mblThumb")&&_9!=this.domNode){
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_9=_9.parentNode;
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}
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return (_9==this.domNode)?null:_9;
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},_getItemNodeFromEvent:function(_a){
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if(_a.touches&&_a.touches.length>0){
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_a=_a.touches[0];
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}
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return this._getItemNode(_a.target);
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},resize:function(){
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this._thumbSize=null;
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this._size=dojo.marginBox(this.domNode);
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this.render();
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},render:function(){
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var i;
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var _b;
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var _c;
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var _d;
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while(this.visibleImages.length>0){
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_d=this.visibleImages.pop();
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this.cache.push(_d);
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dojo.addClass(_d,"hidden");
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_d._cached=true;
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}
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if(!this.items||this.items.length==0){
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return;
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}
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for(i=0;i<this.items.length;i++){
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_c=this.items[i];
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_b=(dojo.isString(_c)?_c:_c[this.urlParam]);
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this.addThumb(_c,_b,i);
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}
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if(!this._thumbSize){
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return;
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}
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var _e=0;
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var _f=-1;
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var _10=this._thumbSize.w+(this.padding*2);
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var _11=this._thumbSize.h+(this.padding*2);
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var _12=this.thumbNodes=dojo.query(".mblThumb",this.domNode);
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var pos=0;
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for(i=0;i<_12.length;i++){
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if(_12[i]._cached){
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continue;
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}
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if(pos%this.maxPerRow==0){
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_f++;
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}
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_e=pos%this.maxPerRow;
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this.place(_12[i],(_e*_10)+this.padding,(_f*_11)+this.padding);
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if(!_12[i]._loading){
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dojo.removeClass(_12[i],"hidden");
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}
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if(pos==this.selectedIndex){
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dojo[pos==this.selectedIndex?"addClass":"removeClass"](_12[i],"selected");
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}
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pos++;
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}
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var _13=Math.ceil(pos/this.maxPerRow);
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if(this._numRows!=_13){
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this._numRows=_13;
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dojo.style(this.domNode,"height",(_13*(this._thumbSize.h+this.padding*2))+"px");
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}
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},addThumb:function(_14,url,_15){
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var _16;
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if(this.cache.length>0){
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_16=this.cache.pop();
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}else{
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_16=dojo.create("div",{"class":"mblThumb hidden",innerHTML:dojo.string.substitute(this.itemTemplate,{url:url},null,this)},this.domNode);
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}
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dojo.addClass(_16,"hidden");
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var _17=dojo.create("img",{});
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_17._thumbDiv=_16;
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_17._conn=dojo.connect(_17,"onload",this.handleImgLoad);
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_17._url=url;
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_16._loading=true;
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this._onLoadImages[url]=_17;
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_17.src=url;
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this.visibleImages.push(_16);
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_16._index=_15;
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_16._item=_14;
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_16._url=url;
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_16._cached=false;
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if(!this._thumbSize){
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this._thumbSize=dojo.marginBox(_16);
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this.calcPadding();
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}
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},handleImgLoad:function(_18){
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var img=_18.target;
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dojo.disconnect(img._conn);
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dojo.removeClass(img._thumbDiv,"hidden");
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img._thumbDiv._loading=false;
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dojo.query(".mblThumbSrc",img._thumbDiv).style("backgroundImage","url("+img._url+")");
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delete this._onLoadImages[img._url];
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},calcPadding:function(){
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var _19=this._size.w;
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var _1a=this._thumbSize.w;
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var _1b=_1a+this.minPadding;
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this.maxPerRow=Math.floor(_19/_1b);
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this.padding=(_19-(_1a*this.maxPerRow))/(this.maxPerRow*2);
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},place:function(_1c,x,y){
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dojo.style(_1c,{"-webkit-transform":"translate("+x+"px,"+y+"px)"});
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}});
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}