Andrej Cimperšek - diploma

/*

        Copyright (c) 2004-2010, 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 _3=function(_4){

if(!_4){

return;

}

var _5=function(_6){

return _6.domNode&&dojo.isDescendant(_6.domNode,_4,true);

};

var ws=dijit.registry.filter(_5);

for(var i=0,w;(w=ws[i]);i++){

w.destroy();

}

delete ws;

};

var _7=function(_8){

var _9=dojo.byId(_8);

return (_9&&_9.tagName?_9.tagName.toLowerCase():"");

};

var _a=function(_b,_c){

var _d=[];

var i=0,n;

while((n=_b.childNodes[i])){

i++;

if(_7(n)==_c){

_d.push(n);

}

}

return _d;

};

var _e=function(_f){

return _a(_f,"div");

};

dojo.declare("dojox.grid._Scroller",null,{constructor:function(_10){

this.setContentNodes(_10);

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(_11,_12,_13){

switch(arguments.length){

case 3:

this.rowsPerPage=_13;

case 2:

this.keepRows=_12;

case 1:

this.rowCount=_11;

default:

break;

}

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(_14,_15){

return _14?(Math.ceil(_14/_15)||1):0;

},destroy:function(){

this.invalidateNodes();

delete this.contentNodes;

delete this.contentNode;

delete this.scrollboxNode;

},setKeepInfo:function(_16){

this.keepRows=_16;

this.keepPages=!this.keepRows?this.keepPages:Math.max(Math.ceil(this.keepRows/this.rowsPerPage),2);

},setContentNodes:function(_17){

this.contentNodes=_17;

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._invalidating=true;

this.invalidateNodes();

this.pageHeights=[];

this.height=(this.pageCount?(this.pageCount-1)*this.defaultPageHeight+this.calcLastPageHeight():0);

this.resize();

this._invalidating=false;

},updateRowCount:function(_18){

this.invalidateNodes();

this.rowCount=_18;

var _19=this.pageCount;

if(_19===0){

this.height=1;

}

this.pageCount=this._getPageCount(this.rowCount,this.rowsPerPage);

if(this.pageCount<_19){

for(var i=_19-1;i>=this.pageCount;i--){

this.height-=this.getPageHeight(i);

delete this.pageHeights[i];

}

}else{

if(this.pageCount>_19){

this.height+=this.defaultPageHeight*(this.pageCount-_19-1)+this.calcLastPageHeight();

}

}

this.resize();

},pageExists:function(_1a){

return Boolean(this.getDefaultPageNode(_1a));

},measurePage:function(_1b){

if(this.grid.rowHeight){

var _1c=this.grid.rowHeight+1;

return ((_1b+1)*this.rowsPerPage>this.rowCount?this.rowCount-_1b*this.rowsPerPage:this.rowsPerPage)*_1c;

}

var n=this.getDefaultPageNode(_1b);

return (n&&n.innerHTML)?n.offsetHeight:undefined;

},positionPage:function(_1d,_1e){

for(var i=0;i<this.colCount;i++){

this.pageNodes[i][_1d].style.top=_1e+"px";

}

},repositionPages:function(_1f){

var _20=this.getDefaultNodes();

var _21=0;

for(var i=0;i<this.stack.length;i++){

_21=Math.max(this.stack[i],_21);

}

var n=_20[_1f];

var y=(n?this.getPageNodePosition(n)+this.getPageHeight(_1f):0);

for(var p=_1f+1;p<=_21;p++){

n=_20[p];

if(n){

if(this.getPageNodePosition(n)==y){

return;

}

this.positionPage(p,y);

}

y+=this.getPageHeight(p);

}

},installPage:function(_22){

for(var i=0;i<this.colCount;i++){

this.contentNodes[i].appendChild(this.pageNodes[i][_22]);

}

},preparePage:function(_23,_24){

var p=(_24?this.popPage():null);

for(var i=0;i<this.colCount;i++){

var _25=this.pageNodes[i];

var _26=(p===null?this.createPageNode():this.invalidatePageNode(p,_25));

_26.pageIndex=_23;

_25[_23]=_26;

}

},renderPage:function(_27){

var _28=[];

var i,j;

for(i=0;i<this.colCount;i++){

_28[i]=this.pageNodes[i][_27];

}

for(i=0,j=_27*this.rowsPerPage;(i<this.rowsPerPage)&&(j<this.rowCount);i++,j++){

this.renderRow(j,_28);

}

},removePage:function(_29){

for(var i=0,j=_29*this.rowsPerPage;i<this.rowsPerPage;i++,j++){

this.removeRow(j);

}

},destroyPage:function(_2a){

for(var i=0;i<this.colCount;i++){

var n=this.invalidatePageNode(_2a,this.pageNodes[i]);

if(n){

dojo.destroy(n);

}

}

},pacify:function(_2b){

},pacifying:false,pacifyTicks:200,setPacifying:function(_2c){

if(this.pacifying!=_2c){

this.pacifying=_2c;

this.pacify(this.pacifying);

}

},startPacify:function(){

this.startPacifyTicks=new Date().getTime();

},doPacify:function(){

var _2d=(new Date().getTime()-this.startPacifyTicks)>this.pacifyTicks;

this.setPacifying(true);

this.startPacify();

return _2d;

},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],Math.max(1,this.height));

}

var _2e=(!this._invalidating);

if(!_2e){

var ah=this.grid.attr("autoHeight");

if(typeof ah=="number"&&ah<=Math.min(this.rowsPerPage,this.rowCount)){

_2e=true;

}

}

if(_2e){

this.needPage(this.page,this.pageTop);

}

var _2f=(this.page<this.pageCount-1)?this.rowsPerPage:((this.rowCount%this.rowsPerPage)||this.rowsPerPage);

var _30=this.getPageHeight(this.page);

this.averageRowHeight=(_30>0&&_2f>0)?(_30/_2f):0;

},calcLastPageHeight:function(){

if(!this.pageCount){

return 0;

}

var _31=this.pageCount-1;

var _32=((this.rowCount%this.rowsPerPage)||(this.rowsPerPage))*this.defaultRowHeight;

this.pageHeights[_31]=_32;

return _32;

},updateContentHeight:function(_33){

this.height+=_33;

this.resize();

},updatePageHeight:function(_34,_35){

if(this.pageExists(_34)){

var oh=this.getPageHeight(_34);

var h=(this.measurePage(_34));

if(h===undefined){

h=oh;

}

this.pageHeights[_34]=h;

if(oh!=h){

this.updateContentHeight(h-oh);

var ah=this.grid.attr("autoHeight");

if((typeof ah=="number"&&ah>this.rowCount)||(ah===true&&!_35)){

this.grid.sizeChange();

}else{

this.repositionPages(_34);

}

}

return h;

}

return 0;

},rowHeightChanged:function(_36){

this.updatePageHeight(Math.floor(_36/this.rowsPerPage),false);

},invalidateNodes:function(){

while(this.stack.length){

this.destroyPage(this.popPage());

}

},createPageNode:function(){

var p=document.createElement("div");

dojo.attr(p,"role","presentation");

p.style.position="absolute";

p.style[dojo._isBodyLtr()?"left":"right"]="0";

return p;

},getPageHeight:function(_37){

var ph=this.pageHeights[_37];

return (ph!==undefined?ph:this.defaultPageHeight);

},pushPage:function(_38){

return this.stack.push(_38);

},popPage:function(){

return this.stack.shift();

},findPage:function(_39){

var i=0,h=0;

for(var ph=0;i<this.pageCount;i++,h+=ph){

ph=this.getPageHeight(i);

if(h+ph>=_39){

break;

}

}

this.page=i;

this.pageTop=h;

},buildPage:function(_3a,_3b,_3c){

this.preparePage(_3a,_3b);

this.positionPage(_3a,_3c);

this.installPage(_3a);

this.renderPage(_3a);

this.pushPage(_3a);

},needPage:function(_3d,_3e){

var h=this.getPageHeight(_3d),oh=h;

if(!this.pageExists(_3d)){

this.buildPage(_3d,this.keepPages&&(this.stack.length>=this.keepPages),_3e);

h=this.updatePageHeight(_3d,true);

}else{

this.positionPage(_3d,_3e);

}

return h;

},onscroll:function(){

this.scroll(this.scrollboxNode.scrollTop);

},scroll:function(_3f){

this.grid.scrollTop=_3f;

if(this.colCount){

this.startPacify();

this.findPage(_3f);

var h=this.height;

var b=this.getScrollBottom(_3f);

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,_3f);

this.lastVisibleRow=this.getLastVisibleRow(p-1,y,b);

if(h!=this.height){

this.repositionPages(p-1);

}

this.endPacify();

}

},getScrollBottom:function(_40){

return (this.windowHeight>=0?_40+this.windowHeight:-1);

},processNodeEvent:function(e,_41){

var t=e.target;

while(t&&(t!=_41)&&t.parentNode&&(t.parentNode.parentNode!=_41)){

t=t.parentNode;

}

if(!t||!t.parentNode||(t.parentNode.parentNode!=_41)){

return false;

}

var _42=t.parentNode;

e.topRowIndex=_42.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(_43,_44){

},removeRow:function(_45){

},getDefaultPageNode:function(_46){

return this.getDefaultNodes()[_46];

},positionPageNode:function(_47,_48){

},getPageNodePosition:function(_49){

return _49.offsetTop;

},invalidatePageNode:function(_4a,_4b){

var p=_4b[_4a];

if(p){

delete _4b[_4a];

this.removePage(_4a,p);

_3(p);

p.innerHTML="";

}

return p;

},getPageRow:function(_4c){

return _4c*this.rowsPerPage;

},getLastPageRow:function(_4d){

return Math.min(this.rowCount,this.getPageRow(_4d+1))-1;

},getFirstVisibleRow:function(_4e,_4f,_50){

if(!this.pageExists(_4e)){

return 0;

}

var row=this.getPageRow(_4e);

var _51=this.getDefaultNodes();

var _52=_e(_51[_4e]);

for(var i=0,l=_52.length;i<l&&_4f<_50;i++,row++){

_4f+=_52[i].offsetHeight;

}

return (row?row-1:row);

},getLastVisibleRow:function(_53,_54,_55){

if(!this.pageExists(_53)){

return 0;

}

var _56=this.getDefaultNodes();

var row=this.getLastPageRow(_53);

var _57=_e(_56[_53]);

for(var i=_57.length-1;i>=0&&_54>_55;i--,row--){

_54-=_57[i].offsetHeight;

}

return row+1;

},findTopRow:function(_58){

var _59=this.getDefaultNodes();

var _5a=_e(_59[this.page]);

for(var i=0,l=_5a.length,t=this.pageTop,h;i<l;i++){

h=_5a[i].offsetHeight;

t+=h;

if(t>=_58){

this.offset=h-(t-_58);

return i+this.page*this.rowsPerPage;

}

}

return -1;

},findScrollTop:function(_5b){

var _5c=Math.floor(_5b/this.rowsPerPage);

var t=0;

var i,l;

for(i=0;i<_5c;i++){

t+=this.getPageHeight(i);

}

this.pageTop=t;

this.needPage(_5c,this.pageTop);

var _5d=this.getDefaultNodes();

var _5e=_e(_5d[_5c]);

var r=_5b-this.rowsPerPage*_5c;

for(i=0,l=_5e.length;i<l&&i<r;i++){

t+=_5e[i].offsetHeight;

}

return t;

},dummy:0});

})();

}