| /* |
| Copyright (c) 2004-2009, The Dojo Foundation All Rights Reserved. |
| Available via Academic Free License >= 2.1 OR the modified BSD license. |
| see: http://dojotoolkit.org/license for details |
| */ |
| |
| |
| if(!dojo._hasResource["dojox.grid._Scroller"]){ |
| dojo._hasResource["dojox.grid._Scroller"]=true; |
| dojo.provide("dojox.grid._Scroller"); |
| (function(){ |
| var _1=function(_2){ |
| var i=0,n,p=_2.parentNode; |
| while((n=p.childNodes[i++])){ |
| if(n==_2){ |
| return i-1; |
| } |
| } |
| return -1; |
| }; |
| var _6=function(_7){ |
| if(!_7){ |
| return; |
| } |
| var _8=function(_9){ |
| return _9.domNode&&dojo.isDescendant(_9.domNode,_7,true); |
| }; |
| var ws=dijit.registry.filter(_8); |
| for(var i=0,w;(w=ws[i]);i++){ |
| w.destroy(); |
| } |
| delete ws; |
| }; |
| var _d=function(_e){ |
| var _f=dojo.byId(_e); |
| return (_f&&_f.tagName?_f.tagName.toLowerCase():""); |
| }; |
| var _10=function(_11,_12){ |
| var _13=[]; |
| var i=0,n; |
| while((n=_11.childNodes[i++])){ |
| if(_d(n)==_12){ |
| _13.push(n); |
| } |
| } |
| return _13; |
| }; |
| var _16=function(_17){ |
| return _10(_17,"div"); |
| }; |
| dojo.declare("dojox.grid._Scroller",null,{constructor:function(_18){ |
| this.setContentNodes(_18); |
| this.pageHeights=[]; |
| this.pageNodes=[]; |
| this.stack=[]; |
| },rowCount:0,defaultRowHeight:32,keepRows:100,contentNode:null,scrollboxNode:null,defaultPageHeight:0,keepPages:10,pageCount:0,windowHeight:0,firstVisibleRow:0,lastVisibleRow:0,averageRowHeight:0,page:0,pageTop:0,init:function(_19,_1a,_1b){ |
| switch(arguments.length){ |
| case 3: |
| this.rowsPerPage=_1b; |
| case 2: |
| this.keepRows=_1a; |
| case 1: |
| this.rowCount=_19; |
| } |
| this.defaultPageHeight=this.defaultRowHeight*this.rowsPerPage; |
| this.pageCount=this._getPageCount(this.rowCount,this.rowsPerPage); |
| this.setKeepInfo(this.keepRows); |
| this.invalidate(); |
| if(this.scrollboxNode){ |
| this.scrollboxNode.scrollTop=0; |
| this.scroll(0); |
| this.scrollboxNode.onscroll=dojo.hitch(this,"onscroll"); |
| } |
| },_getPageCount:function(_1c,_1d){ |
| return _1c?(Math.ceil(_1c/_1d)||1):0; |
| },destroy:function(){ |
| this.invalidateNodes(); |
| delete this.contentNodes; |
| delete this.contentNode; |
| delete this.scrollboxNode; |
| },setKeepInfo:function(_1e){ |
| this.keepRows=_1e; |
| this.keepPages=!this.keepRows?this.keepRows:Math.max(Math.ceil(this.keepRows/this.rowsPerPage),2); |
| },setContentNodes:function(_1f){ |
| this.contentNodes=_1f; |
| this.colCount=(this.contentNodes?this.contentNodes.length:0); |
| this.pageNodes=[]; |
| for(var i=0;i<this.colCount;i++){ |
| this.pageNodes[i]=[]; |
| } |
| },getDefaultNodes:function(){ |
| return this.pageNodes[0]||[]; |
| },invalidate:function(){ |
| this.invalidateNodes(); |
| this.pageHeights=[]; |
| this.height=(this.pageCount?(this.pageCount-1)*this.defaultPageHeight+this.calcLastPageHeight():0); |
| this.resize(); |
| },updateRowCount:function(_21){ |
| this.invalidateNodes(); |
| this.rowCount=_21; |
| var _22=this.pageCount; |
| this.pageCount=this._getPageCount(this.rowCount,this.rowsPerPage); |
| if(this.pageCount<_22){ |
| for(var i=_22-1;i>=this.pageCount;i--){ |
| this.height-=this.getPageHeight(i); |
| delete this.pageHeights[i]; |
| } |
| }else{ |
| if(this.pageCount>_22){ |
| this.height+=this.defaultPageHeight*(this.pageCount-_22-1)+this.calcLastPageHeight(); |
| } |
| } |
| this.resize(); |
| },pageExists:function(_24){ |
| return Boolean(this.getDefaultPageNode(_24)); |
| },measurePage:function(_25){ |
| var n=this.getDefaultPageNode(_25); |
| return (n&&n.innerHTML)?n.offsetHeight:0; |
| },positionPage:function(_27,_28){ |
| for(var i=0;i<this.colCount;i++){ |
| this.pageNodes[i][_27].style.top=_28+"px"; |
| } |
| },repositionPages:function(_2a){ |
| var _2b=this.getDefaultNodes(); |
| var _2c=0; |
| for(var i=0;i<this.stack.length;i++){ |
| _2c=Math.max(this.stack[i],_2c); |
| } |
| var n=_2b[_2a]; |
| var y=(n?this.getPageNodePosition(n)+this.getPageHeight(_2a):0); |
| for(var p=_2a+1;p<=_2c;p++){ |
| n=_2b[p]; |
| if(n){ |
| if(this.getPageNodePosition(n)==y){ |
| return; |
| } |
| this.positionPage(p,y); |
| } |
| y+=this.getPageHeight(p); |
| } |
| },installPage:function(_31){ |
| for(var i=0;i<this.colCount;i++){ |
| this.contentNodes[i].appendChild(this.pageNodes[i][_31]); |
| } |
| },preparePage:function(_33,_34){ |
| var p=(_34?this.popPage():null); |
| for(var i=0;i<this.colCount;i++){ |
| var _37=this.pageNodes[i]; |
| var _38=(p===null?this.createPageNode():this.invalidatePageNode(p,_37)); |
| _38.pageIndex=_33; |
| _38.id=(this._pageIdPrefix||"")+"page-"+_33; |
| _37[_33]=_38; |
| } |
| },renderPage:function(_39){ |
| var _3a=[]; |
| for(var i=0;i<this.colCount;i++){ |
| _3a[i]=this.pageNodes[i][_39]; |
| } |
| for(var i=0,j=_39*this.rowsPerPage;(i<this.rowsPerPage)&&(j<this.rowCount);i++,j++){ |
| this.renderRow(j,_3a); |
| } |
| },removePage:function(_3d){ |
| for(var i=0,j=_3d*this.rowsPerPage;i<this.rowsPerPage;i++,j++){ |
| this.removeRow(j); |
| } |
| },destroyPage:function(_40){ |
| for(var i=0;i<this.colCount;i++){ |
| var n=this.invalidatePageNode(_40,this.pageNodes[i]); |
| if(n){ |
| dojo.destroy(n); |
| } |
| } |
| },pacify:function(_43){ |
| },pacifying:false,pacifyTicks:200,setPacifying:function(_44){ |
| if(this.pacifying!=_44){ |
| this.pacifying=_44; |
| this.pacify(this.pacifying); |
| } |
| },startPacify:function(){ |
| this.startPacifyTicks=new Date().getTime(); |
| },doPacify:function(){ |
| var _45=(new Date().getTime()-this.startPacifyTicks)>this.pacifyTicks; |
| this.setPacifying(true); |
| this.startPacify(); |
| return _45; |
| },endPacify:function(){ |
| this.setPacifying(false); |
| },resize:function(){ |
| if(this.scrollboxNode){ |
| this.windowHeight=this.scrollboxNode.clientHeight; |
| } |
| for(var i=0;i<this.colCount;i++){ |
| dojox.grid.util.setStyleHeightPx(this.contentNodes[i],this.height); |
| } |
| this.needPage(this.page,this.pageTop); |
| var _47=(this.page<this.pageCount-1)?this.rowsPerPage:((this.rowCount%this.rowsPerPage)||this.rowsPerPage); |
| var _48=this.getPageHeight(this.page); |
| this.averageRowHeight=(_48>0&&_47>0)?(_48/_47):0; |
| },calcLastPageHeight:function(){ |
| if(!this.pageCount){ |
| return 0; |
| } |
| var _49=this.pageCount-1; |
| var _4a=((this.rowCount%this.rowsPerPage)||(this.rowsPerPage))*this.defaultRowHeight; |
| this.pageHeights[_49]=_4a; |
| return _4a; |
| },updateContentHeight:function(_4b){ |
| this.height+=_4b; |
| this.resize(); |
| },updatePageHeight:function(_4c){ |
| if(this.pageExists(_4c)){ |
| var oh=this.getPageHeight(_4c); |
| var h=(this.measurePage(_4c))||(oh); |
| this.pageHeights[_4c]=h; |
| if((h)&&(oh!=h)){ |
| this.updateContentHeight(h-oh); |
| this.repositionPages(_4c); |
| } |
| } |
| },rowHeightChanged:function(_4f){ |
| this.updatePageHeight(Math.floor(_4f/this.rowsPerPage)); |
| },invalidateNodes:function(){ |
| while(this.stack.length){ |
| this.destroyPage(this.popPage()); |
| } |
| },createPageNode:function(){ |
| var p=document.createElement("div"); |
| p.style.position="absolute"; |
| p.style[dojo._isBodyLtr()?"left":"right"]="0"; |
| return p; |
| },getPageHeight:function(_51){ |
| var ph=this.pageHeights[_51]; |
| return (ph!==undefined?ph:this.defaultPageHeight); |
| },pushPage:function(_53){ |
| return this.stack.push(_53); |
| },popPage:function(){ |
| return this.stack.shift(); |
| },findPage:function(_54){ |
| var i=0,h=0; |
| for(var ph=0;i<this.pageCount;i++,h+=ph){ |
| ph=this.getPageHeight(i); |
| if(h+ph>=_54){ |
| break; |
| } |
| } |
| this.page=i; |
| this.pageTop=h; |
| },buildPage:function(_58,_59,_5a){ |
| this.preparePage(_58,_59); |
| this.positionPage(_58,_5a); |
| this.installPage(_58); |
| this.renderPage(_58); |
| this.pushPage(_58); |
| },needPage:function(_5b,_5c){ |
| var h=this.getPageHeight(_5b),oh=h; |
| if(!this.pageExists(_5b)){ |
| this.buildPage(_5b,this.keepPages&&(this.stack.length>=this.keepPages),_5c); |
| h=this.measurePage(_5b)||h; |
| this.pageHeights[_5b]=h; |
| if(h&&(oh!=h)){ |
| this.updateContentHeight(h-oh); |
| } |
| }else{ |
| this.positionPage(_5b,_5c); |
| } |
| return h; |
| },onscroll:function(){ |
| this.scroll(this.scrollboxNode.scrollTop); |
| },scroll:function(_5f){ |
| this.grid.scrollTop=_5f; |
| if(this.colCount){ |
| this.startPacify(); |
| this.findPage(_5f); |
| var h=this.height; |
| var b=this.getScrollBottom(_5f); |
| for(var p=this.page,y=this.pageTop;(p<this.pageCount)&&((b<0)||(y<b));p++){ |
| y+=this.needPage(p,y); |
| } |
| this.firstVisibleRow=this.getFirstVisibleRow(this.page,this.pageTop,_5f); |
| this.lastVisibleRow=this.getLastVisibleRow(p-1,y,b); |
| if(h!=this.height){ |
| this.repositionPages(p-1); |
| } |
| this.endPacify(); |
| } |
| },getScrollBottom:function(_64){ |
| return (this.windowHeight>=0?_64+this.windowHeight:-1); |
| },processNodeEvent:function(e,_66){ |
| var t=e.target; |
| while(t&&(t!=_66)&&t.parentNode&&(t.parentNode.parentNode!=_66)){ |
| t=t.parentNode; |
| } |
| if(!t||!t.parentNode||(t.parentNode.parentNode!=_66)){ |
| return false; |
| } |
| var _68=t.parentNode; |
| e.topRowIndex=_68.pageIndex*this.rowsPerPage; |
| e.rowIndex=e.topRowIndex+_1(t); |
| e.rowTarget=t; |
| return true; |
| },processEvent:function(e){ |
| return this.processNodeEvent(e,this.contentNode); |
| },renderRow:function(_6a,_6b){ |
| },removeRow:function(_6c){ |
| },getDefaultPageNode:function(_6d){ |
| return this.getDefaultNodes()[_6d]; |
| },positionPageNode:function(_6e,_6f){ |
| },getPageNodePosition:function(_70){ |
| return _70.offsetTop; |
| },invalidatePageNode:function(_71,_72){ |
| var p=_72[_71]; |
| if(p){ |
| delete _72[_71]; |
| this.removePage(_71,p); |
| _6(p); |
| p.innerHTML=""; |
| } |
| return p; |
| },getPageRow:function(_74){ |
| return _74*this.rowsPerPage; |
| },getLastPageRow:function(_75){ |
| return Math.min(this.rowCount,this.getPageRow(_75+1))-1; |
| },getFirstVisibleRow:function(_76,_77,_78){ |
| if(!this.pageExists(_76)){ |
| return 0; |
| } |
| var row=this.getPageRow(_76); |
| var _7a=this.getDefaultNodes(); |
| var _7b=_16(_7a[_76]); |
| for(var i=0,l=_7b.length;i<l&&_77<_78;i++,row++){ |
| _77+=_7b[i].offsetHeight; |
| } |
| return (row?row-1:row); |
| },getLastVisibleRow:function(_7e,_7f,_80){ |
| if(!this.pageExists(_7e)){ |
| return 0; |
| } |
| var _81=this.getDefaultNodes(); |
| var row=this.getLastPageRow(_7e); |
| var _83=_16(_81[_7e]); |
| for(var i=_83.length-1;i>=0&&_7f>_80;i--,row--){ |
| _7f-=_83[i].offsetHeight; |
| } |
| return row+1; |
| },findTopRow:function(_85){ |
| var _86=this.getDefaultNodes(); |
| var _87=_16(_86[this.page]); |
| for(var i=0,l=_87.length,t=this.pageTop,h;i<l;i++){ |
| h=_87[i].offsetHeight; |
| t+=h; |
| if(t>=_85){ |
| this.offset=h-(t-_85); |
| return i+this.page*this.rowsPerPage; |
| } |
| } |
| return -1; |
| },findScrollTop:function(_8c){ |
| var _8d=Math.floor(_8c/this.rowsPerPage); |
| var t=0; |
| for(var i=0;i<_8d;i++){ |
| t+=this.getPageHeight(i); |
| } |
| this.pageTop=t; |
| this.needPage(_8d,this.pageTop); |
| var _90=this.getDefaultNodes(); |
| var _91=_16(_90[_8d]); |
| var r=_8c-this.rowsPerPage*_8d; |
| for(var i=0,l=_91.length;i<l&&i<r;i++){ |
| t+=_91[i].offsetHeight; |
| } |
| return t; |
| },dummy:0}); |
| })(); |
| } |