source/widgets/grid/ColumnSplitDD.js

   1 /*\r
   2  * Ext JS Library 2.2.1\r
   3  * Copyright(c) 2006-2009, Ext JS, LLC.\r
   4  * licensing@extjs.com\r
   5  * \r
   6  * http://extjs.com/license\r
   7  */\r
   8 \r
   9 // private\r
  10 // This is a support class used internally by the Grid components\r
  11 Ext.grid.SplitDragZone = function(grid, hd, hd2){\r
  12     this.grid = grid;\r
  13     this.view = grid.getView();\r
  14     this.proxy = this.view.resizeProxy;\r
  15     Ext.grid.SplitDragZone.superclass.constructor.call(this, hd,\r
  16         "gridSplitters" + this.grid.getGridEl().id, {\r
  17         dragElId : Ext.id(this.proxy.dom), resizeFrame:false\r
  18     });\r
  19     this.setHandleElId(Ext.id(hd));\r
  20     this.setOuterHandleElId(Ext.id(hd2));\r
  21     this.scroll = false;\r
  22 };\r
  23 Ext.extend(Ext.grid.SplitDragZone, Ext.dd.DDProxy, {\r
  24     fly: Ext.Element.fly,\r
  25 \r
  26     b4StartDrag : function(x, y){\r
  27         this.view.headersDisabled = true;\r
  28         this.proxy.setHeight(this.view.mainWrap.getHeight());\r
  29         var w = this.cm.getColumnWidth(this.cellIndex);\r
  30         var minw = Math.max(w-this.grid.minColumnWidth, 0);\r
  31         this.resetConstraints();\r
  32         this.setXConstraint(minw, 1000);\r
  33         this.setYConstraint(0, 0);\r
  34         this.minX = x - minw;\r
  35         this.maxX = x + 1000;\r
  36         this.startPos = x;\r
  37         Ext.dd.DDProxy.prototype.b4StartDrag.call(this, x, y);\r
  38     },\r
  39 \r
  40 \r
  41     handleMouseDown : function(e){\r
  42         ev = Ext.EventObject.setEvent(e);\r
  43         var t = this.fly(ev.getTarget());\r
  44         if(t.hasClass("x-grid-split")){\r
  45             this.cellIndex = this.view.getCellIndex(t.dom);\r
  46             this.split = t.dom;\r
  47             this.cm = this.grid.colModel;\r
  48             if(this.cm.isResizable(this.cellIndex) && !this.cm.isFixed(this.cellIndex)){\r
  49                 Ext.grid.SplitDragZone.superclass.handleMouseDown.apply(this, arguments);\r
  50             }\r
  51         }\r
  52     },\r
  53 \r
  54     endDrag : function(e){\r
  55         this.view.headersDisabled = false;\r
  56         var endX = Math.max(this.minX, Ext.lib.Event.getPageX(e));\r
  57         var diff = endX - this.startPos;\r
  58         this.view.onColumnSplitterMoved(this.cellIndex, this.cm.getColumnWidth(this.cellIndex)+diff);\r
  59     },\r
  60 \r
  61     autoOffset : function(){\r
  62         this.setDelta(0,0);\r
  63     }\r
  64 });