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-<head>
- <title>The source code</title>
- <link href="../resources/prettify/prettify.css" type="text/css" rel="stylesheet" />
- <script type="text/javascript" src="../resources/prettify/prettify.js"></script>
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- <pre class="prettyprint lang-js">/*!
- * Ext JS Library 3.0.3
- * Copyright(c) 2006-2009 Ext JS, LLC
- * licensing@extjs.com
- * http://www.extjs.com/license
- */
-<div id="cls-Ext.ListView.ColumnResizer"></div>/**\r
- * @class Ext.ListView.ColumnResizer\r
- * @extends Ext.util.Observable\r
- * <p>Supporting Class for Ext.ListView.</p>\r
- * @constructor\r
- * @param {Object} config\r
- */\r
-Ext.ListView.ColumnResizer = Ext.extend(Ext.util.Observable, {\r
- <div id="cfg-Ext.ListView.ColumnResizer-minPct"></div>/**\r
- * @cfg {Number} minPct The minimum percentage to allot for any column (defaults to <tt>.05</tt>)\r
- */\r
- minPct: .05,\r
-\r
- constructor: function(config){\r
- Ext.apply(this, config);\r
- Ext.ListView.ColumnResizer.superclass.constructor.call(this);\r
- },\r
- init : function(listView){\r
- this.view = listView;\r
- listView.on('render', this.initEvents, this);\r
- },\r
-\r
- initEvents : function(view){\r
- view.mon(view.innerHd, 'mousemove', this.handleHdMove, this);\r
- this.tracker = new Ext.dd.DragTracker({\r
- onBeforeStart: this.onBeforeStart.createDelegate(this),\r
- onStart: this.onStart.createDelegate(this),\r
- onDrag: this.onDrag.createDelegate(this),\r
- onEnd: this.onEnd.createDelegate(this),\r
- tolerance: 3,\r
- autoStart: 300\r
- });\r
- this.tracker.initEl(view.innerHd);\r
- view.on('beforedestroy', this.tracker.destroy, this.tracker);\r
- },\r
-\r
- handleHdMove : function(e, t){\r
- var hw = 5,\r
- x = e.getPageX(),\r
- hd = e.getTarget('em', 3, true);\r
- if(hd){\r
- var r = hd.getRegion(),\r
- ss = hd.dom.style,\r
- pn = hd.dom.parentNode;\r
-\r
- if(x - r.left <= hw && pn != pn.parentNode.firstChild){\r
- this.activeHd = Ext.get(pn.previousSibling.firstChild);\r
- ss.cursor = Ext.isWebKit ? 'e-resize' : 'col-resize';\r
- } else if(r.right - x <= hw && pn != pn.parentNode.lastChild.previousSibling){\r
- this.activeHd = hd;\r
- ss.cursor = Ext.isWebKit ? 'w-resize' : 'col-resize';\r
- } else{\r
- delete this.activeHd;\r
- ss.cursor = '';\r
- }\r
- }\r
- },\r
-\r
- onBeforeStart : function(e){\r
- this.dragHd = this.activeHd;\r
- return !!this.dragHd;\r
- },\r
-\r
- onStart: function(e){\r
- this.view.disableHeaders = true;\r
- this.proxy = this.view.el.createChild({cls:'x-list-resizer'});\r
- this.proxy.setHeight(this.view.el.getHeight());\r
-\r
- var x = this.tracker.getXY()[0],\r
- w = this.view.innerHd.getWidth();\r
-\r
- this.hdX = this.dragHd.getX();\r
- this.hdIndex = this.view.findHeaderIndex(this.dragHd);\r
-\r
- this.proxy.setX(this.hdX);\r
- this.proxy.setWidth(x-this.hdX);\r
-\r
- this.minWidth = w*this.minPct;\r
- this.maxWidth = w - (this.minWidth*(this.view.columns.length-1-this.hdIndex));\r
- },\r
-\r
- onDrag: function(e){\r
- var cursorX = this.tracker.getXY()[0];\r
- this.proxy.setWidth((cursorX-this.hdX).constrain(this.minWidth, this.maxWidth));\r
- },\r
-\r
- onEnd: function(e){\r
- var nw = this.proxy.getWidth();\r
- this.proxy.remove();\r
-\r
- var index = this.hdIndex,\r
- vw = this.view, \r
- cs = vw.columns, \r
- len = cs.length,\r
- w = this.view.innerHd.getWidth(), \r
- minPct = this.minPct * 100;\r
- pct = Math.ceil((nw * vw.maxWidth) / w),\r
- diff = cs[index].width - pct,\r
- each = Math.floor(diff / (len-1-index)),\r
- mod = diff - (each * (len-1-index));\r
-\r
- for(var i = index+1; i < len; i++){\r
- var cw = cs[i].width + each,\r
- ncw = Math.max(minPct, cw);\r
- if(cw != ncw){\r
- mod += cw - ncw;\r
- }\r
- cs[i].width = ncw;\r
- }\r
- cs[index].width = pct;\r
- cs[index+1].width += mod;\r
- delete this.dragHd;\r
- vw.setHdWidths();\r
- vw.refresh();\r
- setTimeout(function(){\r
- vw.disableHeaders = false;\r
- }, 100);\r
- }\r
-});</pre>
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