text: /*
  This file is part of Ext JS 3.4
  
  Copyright (c) 2011-2013 Sencha Inc
  
  Contact:  http://www.sencha.com/contact
  
  GNU General Public License Usage
  This file may be used under the terms of the GNU General Public License version 3.0 as
  published by the Free Software Foundation and appearing in the file LICENSE included in the
  packaging of this file.
  
  Please review the following information to ensure the GNU General Public License version 3.0
  requirements will be met: http://www.gnu.org/copyleft/gpl.html.
  
  If you are unsure which license is appropriate for your use, please contact the sales department
  at http://www.sencha.com/contact.
  
  Build date: 2013-04-03 15:07:25
  */
  // private
  // This is a support class used internally by the Grid components
  Ext.grid.HeaderDragZone = Ext.extend(Ext.dd.DragZone, {
      maxDragWidth: 120,
      
      constructor : function(grid, hd, hd2){
          this.grid = grid;
          this.view = grid.getView();
          this.ddGroup = "gridHeader" + this.grid.getGridEl().id;
          Ext.grid.HeaderDragZone.superclass.constructor.call(this, hd);
          if(hd2){
              this.setHandleElId(Ext.id(hd));
              this.setOuterHandleElId(Ext.id(hd2));
          }
          this.scroll = false;
      },
      
      getDragData : function(e){
          var t = Ext.lib.Event.getTarget(e),
              h = this.view.findHeaderCell(t);
          if(h){
              return {ddel: h.firstChild, header:h};
          }
          return false;
      },
  
      onInitDrag : function(e){
          // keep the value here so we can restore it;
          this.dragHeadersDisabled = this.view.headersDisabled;
          this.view.headersDisabled = true;
          var clone = this.dragData.ddel.cloneNode(true);
          clone.id = Ext.id();
          clone.style.width = Math.min(this.dragData.header.offsetWidth,this.maxDragWidth) + "px";
          this.proxy.update(clone);
          return true;
      },
  
      afterValidDrop : function(){
          this.completeDrop();
      },
  
      afterInvalidDrop : function(){
          this.completeDrop();
      },
      
      completeDrop: function(){
          var v = this.view,
              disabled = this.dragHeadersDisabled;
          setTimeout(function(){
              v.headersDisabled = disabled;
          }, 50);
      }
  });
  
  // private
  // This is a support class used internally by the Grid components
  Ext.grid.HeaderDropZone = Ext.extend(Ext.dd.DropZone, {
      proxyOffsets : [-4, -9],
      fly: Ext.Element.fly,
      
      constructor : function(grid, hd, hd2){
          this.grid = grid;
          this.view = grid.getView();
          // split the proxies so they don't interfere with mouse events
          this.proxyTop = Ext.DomHelper.append(document.body, {
              cls:"col-move-top", html:"&#160;"
          }, true);
          this.proxyBottom = Ext.DomHelper.append(document.body, {
              cls:"col-move-bottom", html:"&#160;"
          }, true);
          this.proxyTop.hide = this.proxyBottom.hide = function(){
              this.setLeftTop(-100,-100);
              this.setStyle("visibility", "hidden");
          };
          this.ddGroup = "gridHeader" + this.grid.getGridEl().id;
          // temporarily disabled
          //Ext.dd.ScrollManager.register(this.view.scroller.dom);
          Ext.grid.HeaderDropZone.superclass.constructor.call(this, grid.getGridEl().dom);
      },
  
      getTargetFromEvent : function(e){
          var t = Ext.lib.Event.getTarget(e),
              cindex = this.view.findCellIndex(t);
          if(cindex !== false){
              return this.view.getHeaderCell(cindex);
          }
      },
  
      nextVisible : function(h){
          var v = this.view, cm = this.grid.colModel;
          h = h.nextSibling;
          while(h){
              if(!cm.isHidden(v.getCellIndex(h))){
                  return h;
              }
              h = h.nextSibling;
          }
          return null;
      },
  
      prevVisible : function(h){
          var v = this.view, cm = this.grid.colModel;
          h = h.prevSibling;
          while(h){
              if(!cm.isHidden(v.getCellIndex(h))){
                  return h;
              }
              h = h.prevSibling;
          }
          return null;
      },
  
      positionIndicator : function(h, n, e){
          var x = Ext.lib.Event.getPageX(e),
              r = Ext.lib.Dom.getRegion(n.firstChild),
              px, 
              pt, 
              py = r.top + this.proxyOffsets[1];
          if((r.right - x) <= (r.right-r.left)/2){
              px = r.right+this.view.borderWidth;
              pt = "after";
          }else{
              px = r.left;
              pt = "before";
          }
  
          if(this.grid.colModel.isFixed(this.view.getCellIndex(n))){
              return false;
          }
  
          px +=  this.proxyOffsets[0];
          this.proxyTop.setLeftTop(px, py);
          this.proxyTop.show();
          if(!this.bottomOffset){
              this.bottomOffset = this.view.mainHd.getHeight();
          }
          this.proxyBottom.setLeftTop(px, py+this.proxyTop.dom.offsetHeight+this.bottomOffset);
          this.proxyBottom.show();
          return pt;
      },
  
      onNodeEnter : function(n, dd, e, data){
          if(data.header != n){
              this.positionIndicator(data.header, n, e);
          }
      },
  
      onNodeOver : function(n, dd, e, data){
          var result = false;
          if(data.header != n){
              result = this.positionIndicator(data.header, n, e);
          }
          if(!result){
              this.proxyTop.hide();
              this.proxyBottom.hide();
          }
          return result ? this.dropAllowed : this.dropNotAllowed;
      },
  
      onNodeOut : function(n, dd, e, data){
          this.proxyTop.hide();
          this.proxyBottom.hide();
      },
  
      onNodeDrop : function(n, dd, e, data){
          var h = data.header;
          if(h != n){
              var cm = this.grid.colModel,
                  x = Ext.lib.Event.getPageX(e),
                  r = Ext.lib.Dom.getRegion(n.firstChild),
                  pt = (r.right - x) <= ((r.right-r.left)/2) ? "after" : "before",
                  oldIndex = this.view.getCellIndex(h),
                  newIndex = this.view.getCellIndex(n);
              if(pt == "after"){
                  newIndex++;
              }
              if(oldIndex < newIndex){
                  newIndex--;
              }
              cm.moveColumn(oldIndex, newIndex);
              return true;
          }
          return false;
      }
  });
  
  Ext.grid.GridView.ColumnDragZone = Ext.extend(Ext.grid.HeaderDragZone, {
      
      constructor : function(grid, hd){
          Ext.grid.GridView.ColumnDragZone.superclass.constructor.call(this, grid, hd, null);
          this.proxy.el.addClass('x-grid3-col-dd');
      },
      
      handleMouseDown : function(e){
      },
  
      callHandleMouseDown : function(e){
          Ext.grid.GridView.ColumnDragZone.superclass.handleMouseDown.call(this, e);
      }
  });
  