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.mdnd.AreaManager"]){

dojo._hasResource["dojox.mdnd.AreaManager"]=true;

dojo.provide("dojox.mdnd.AreaManager");

dojo.require("dojox.mdnd.Moveable");

dojo.declare("dojox.mdnd.AreaManager",null,{autoRefresh:true,areaClass:"dojoxDndArea",dragHandleClass:"dojoxDragHandle",constructor:function(){

this._areaList=[];

this.resizeHandler=dojo.connect(dojo.global,"onresize",this,function(){

this._dropMode.updateAreas(this._areaList);

});

this._oldIndexArea=this._currentIndexArea=this._oldDropIndex=this._currentDropIndex=this._sourceIndexArea=this._sourceDropIndex=-1;

},init:function(){

this.registerByClass();

},registerByNode:function(_1,_2){

var _3=this._getIndexArea(_1);

if(_1&&_3==-1){

var _4=_1.getAttribute("accept");

var _5=(_4)?_4.split(/\s*,\s*/):["text"];

var _6={"node":_1,"items":[],"coords":{},"margin":null,"accept":_5,"initItems":false};

dojo.forEach(this._getChildren(_1),function(_7){

this._setMarginArea(_6,_7);

_6.items.push(this._addMoveableItem(_7));

},this);

this._areaList=this._dropMode.addArea(this._areaList,_6);

if(!_2){

this._dropMode.updateAreas(this._areaList);

}

dojo.publish("/dojox/mdnd/manager/register",[_1]);

}

},registerByClass:function(){

dojo.query("."+this.areaClass).forEach(function(_8){

this.registerByNode(_8,true);

},this);

this._dropMode.updateAreas(this._areaList);

},unregister:function(_9){

var _a=this._getIndexArea(_9);

if(_a!=-1){

dojo.forEach(this._areaList[_a].items,function(_b){

this._deleteMoveableItem(_b);

},this);

this._areaList.splice(_a,1);

this._dropMode.updateAreas(this._areaList);

return true;

}

return false;

},_addMoveableItem:function(_c){

_c.setAttribute("tabIndex","0");

var _d=this._searchDragHandle(_c);

var _e=new dojox.mdnd.Moveable({"handle":_d,"skip":true},_c);

dojo.addClass(_d||_c,"dragHandle");

var _f=_c.getAttribute("dndType");

var _10={"item":_e,"type":_f?_f.split(/\s*,\s*/):["text"],"handlers":[dojo.connect(_e,"onDragStart",this,"onDragStart")]};

if(dijit&&dijit.byNode){

var _11=dijit.byNode(_c);

if(_11){

_10.type=_11.dndType?_11.dndType.split(/\s*,\s*/):["text"];

_10.handlers.push(dojo.connect(_11,"uninitialize",this,function(){

this.removeDragItem(_c.parentNode,_e.node);

}));

}

}

return _10;

},_deleteMoveableItem:function(_12){

dojo.forEach(_12.handlers,function(_13){

dojo.disconnect(_13);

});

var _14=_12.item.node,_15=this._searchDragHandle(_14);

dojo.removeClass(_15||_14,"dragHandle");

_12.item.destroy();

},_getIndexArea:function(_16){

if(_16){

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

if(this._areaList[i].node===_16){

return i;

}

}

}

return -1;

},_searchDragHandle:function(_17){

if(_17){

var _18=this.dragHandleClass.split(" "),_19=_18.length,_1a="";

dojo.forEach(_18,function(css,i){

_1a+="."+css;

if(i!=_19-1){

_1a+=", ";

}

});

return dojo.query(_1a,_17)[0];

}

},addDragItem:function(_1b,_1c,_1d,_1e){

var add=true;

if(!_1e){

add=_1b&&_1c&&(_1c.parentNode===null||(_1c.parentNode&&_1c.parentNode.nodeType!==1));

}

if(add){

var _1f=this._getIndexArea(_1b);

if(_1f!==-1){

var _20=this._addMoveableItem(_1c),_21=this._areaList[_1f].items;

if(0<=_1d&&_1d<_21.length){

var _22=_21.slice(0,_1d),_23=_21.slice(_1d,_21.length);

_22[_22.length]=_20;

this._areaList[_1f].items=_22.concat(_23);

_1b.insertBefore(_1c,_21[_1d].item.node);

}else{

this._areaList[_1f].items.push(_20);

_1b.appendChild(_1c);

}

this._setMarginArea(this._areaList[_1f],_1c);

this._areaList[_1f].initItems=false;

return true;

}

}

return false;

},removeDragItem:function(_24,_25){

var _26=this._getIndexArea(_24);

if(_24&&_26!==-1){

var _27=this._areaList[_26].items;

for(var j=0;j<_27.length;j++){

if(_27[j].item.node===_25){

this._deleteMoveableItem(_27[j]);

_27.splice(j,1);

return _24.removeChild(_25);

}

}

}

return null;

},_getChildren:function(_28){

var _29=[];

dojo.forEach(_28.childNodes,function(_2a){

if(_2a.nodeType==1){

if(dijit&&dijit.byNode){

var _2b=dijit.byNode(_2a);

if(_2b){

if(!_2b.dragRestriction){

_29.push(_2a);

}

}else{

_29.push(_2a);

}

}else{

_29.push(_2a);

}

}

});

return _29;

},_setMarginArea:function(_2c,_2d){

if(_2c&&_2c.margin===null&&_2d){

_2c.margin=dojo._getMarginExtents(_2d);

}

},findCurrentIndexArea:function(_2e,_2f){

this._oldIndexArea=this._currentIndexArea;

this._currentIndexArea=this._dropMode.getTargetArea(this._areaList,_2e,this._currentIndexArea);

if(this._currentIndexArea!=this._oldIndexArea){

if(this._oldIndexArea!=-1){

this.onDragExit(_2e,_2f);

}

if(this._currentIndexArea!=-1){

this.onDragEnter(_2e,_2f);

}

}

return this._currentIndexArea;

},_isAccepted:function(_30,_31){

this._accept=false;

for(var i=0;i<_31.length;++i){

for(var j=0;j<_30.length;++j){

if(_30[j]==_31[i]){

this._accept=true;

break;

}

}

}

},onDragStart:function(_32,_33,_34){

if(this.autoRefresh){

this._dropMode.updateAreas(this._areaList);

}

var _35=(dojo.isWebKit)?dojo.body():dojo.body().parentNode;

if(!this._cover){

this._cover=dojo.create("div",{"class":"dndCover"});

this._cover2=dojo.clone(this._cover);

dojo.addClass(this._cover2,"dndCover2");

}

var h=_35.scrollHeight+"px";

this._cover.style.height=this._cover2.style.height=h;

dojo.body().appendChild(this._cover);

dojo.body().appendChild(this._cover2);

this._dragStartHandler=dojo.connect(_32.ownerDocument,"ondragstart",dojo,"stopEvent");

this._sourceIndexArea=this._lastValidIndexArea=this._currentIndexArea=this._getIndexArea(_32.parentNode);

var _36=this._areaList[this._sourceIndexArea];

var _37=_36.items;

for(var i=0;i<_37.length;i++){

if(_37[i].item.node==_32){

this._dragItem=_37[i];

this._dragItem.handlers.push(dojo.connect(this._dragItem.item,"onDrag",this,"onDrag"));

this._dragItem.handlers.push(dojo.connect(this._dragItem.item,"onDragEnd",this,"onDrop"));

_37.splice(i,1);

this._currentDropIndex=this._sourceDropIndex=i;

break;

}

}

var _38=null;

if(this._sourceDropIndex!==_36.items.length){

_38=_36.items[this._sourceDropIndex].item.node;

}

if(dojo.isIE>7){

this._eventsIE7=[dojo.connect(this._cover,"onmouseover",dojo,"stopEvent"),dojo.connect(this._cover,"onmouseout",dojo,"stopEvent"),dojo.connect(this._cover,"onmouseenter",dojo,"stopEvent"),dojo.connect(this._cover,"onmouseleave",dojo,"stopEvent")];

}

var s=_32.style;

s.left=_33.x+"px";

s.top=_33.y+"px";

if(s.position=="relative"||s.position==""){

s.position="absolute";

}

this._cover.appendChild(_32);

this._dropIndicator.place(_36.node,_38,_34);

dojo.addClass(_32,"dragNode");

this._accept=true;

dojo.publish("/dojox/mdnd/drag/start",[_32,_36,this._sourceDropIndex]);

},onDragEnter:function(_39,_3a){

if(this._currentIndexArea===this._sourceIndexArea){

this._accept=true;

}else{

this._isAccepted(this._dragItem.type,this._areaList[this._currentIndexArea].accept);

}

},onDragExit:function(_3b,_3c){

this._accept=false;

},onDrag:function(_3d,_3e,_3f,_40){

var _41=this._dropMode.getDragPoint(_3e,_3f,_40);

this.findCurrentIndexArea(_41,_3f);

if(this._currentIndexArea!==-1&&this._accept){

this.placeDropIndicator(_41,_3f);

}

},placeDropIndicator:function(_42,_43){

this._oldDropIndex=this._currentDropIndex;

var _44=this._areaList[this._currentIndexArea];

if(!_44.initItems){

this._dropMode.initItems(_44);

}

this._currentDropIndex=this._dropMode.getDropIndex(_44,_42);

if(!(this._currentIndexArea===this._oldIndexArea&&this._oldDropIndex===this._currentDropIndex)){

this._placeDropIndicator(_43);

}

return this._currentDropIndex;

},_placeDropIndicator:function(_45){

var _46=this._areaList[this._lastValidIndexArea];

var _47=this._areaList[this._currentIndexArea];

this._dropMode.refreshItems(_46,this._oldDropIndex,_45,false);

var _48=null;

if(this._currentDropIndex!=-1){

_48=_47.items[this._currentDropIndex].item.node;

}

this._dropIndicator.place(_47.node,_48);

this._lastValidIndexArea=this._currentIndexArea;

this._dropMode.refreshItems(_47,this._currentDropIndex,_45,true);

},onDropCancel:function(){

if(!this._accept){

var _49=this._getIndexArea(this._dropIndicator.node.parentNode);

if(_49!=-1){

this._currentIndexArea=_49;

}else{

this._currentIndexArea=0;

}

}

},onDrop:function(_4a){

this.onDropCancel();

var _4b=this._areaList[this._currentIndexArea];

dojo.removeClass(_4a,"dragNode");

var _4c=_4a.style;

_4c.position="relative";

_4c.left="0";

_4c.top="0";

_4c.width="auto";

if(_4b.node==this._dropIndicator.node.parentNode){

_4b.node.insertBefore(_4a,this._dropIndicator.node);

}else{

_4b.node.appendChild(_4a);

this._currentDropIndex=_4b.items.length;

}

var _4d=this._currentDropIndex;

if(_4d==-1){

_4d=_4b.items.length;

}

var _4e=_4b.items;

var _4f=_4e.slice(0,_4d);

var _50=_4e.slice(_4d,_4e.length);

_4f[_4f.length]=this._dragItem;

_4b.items=_4f.concat(_50);

this._setMarginArea(_4b,_4a);

dojo.forEach(this._areaList,function(obj){

obj.initItems=false;

});

dojo.disconnect(this._dragItem.handlers.pop());

dojo.disconnect(this._dragItem.handlers.pop());

this._resetAfterDrop();

if(this._cover){

dojo.body().removeChild(this._cover);

dojo.body().removeChild(this._cover2);

}

dojo.publish("/dojox/mdnd/drop",[_4a,_4b,_4d]);

},_resetAfterDrop:function(){

this._accept=false;

this._dragItem=null;

this._currentDropIndex=-1;

this._currentIndexArea=-1;

this._oldDropIndex=-1;

this._sourceIndexArea=-1;

this._sourceDropIndex=-1;

this._dropIndicator.remove();

if(this._dragStartHandler){

dojo.disconnect(this._dragStartHandler);

}

if(dojo.isIE>7){

dojo.forEach(this._eventsIE7,dojo.disconnect);

}

},destroy:function(){

while(this._areaList.length>0){

if(!this.unregister(this._areaList[0].node)){

throw new Error("Error while destroying AreaManager");

}

}

dojo.disconnect(this.resizeHandler);

this._dropIndicator.destroy();

this._dropMode.destroy();

if(dojox.mdnd.autoScroll){

dojox.mdnd.autoScroll.destroy();

}

if(this.refreshListener){

dojo.unsubscribe(this.refreshListener);

}

if(this._cover){

dojo._destroyElement(this._cover);

dojo._destroyElement(this._cover2);

delete this._cover;

delete this._cover2;

}

}});

if(dijit&&dijit._Widget){

dojo.extend(dijit._Widget,{dndType:"text"});

}

dojox.mdnd._areaManager=null;

dojox.mdnd.areaManager=function(){

if(!dojox.mdnd._areaManager){

dojox.mdnd._areaManager=new dojox.mdnd.AreaManager();

}

return dojox.mdnd._areaManager;

};

}