[625] | 1 | /*! |
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| 2 | * Ext JS Library 3.0.0 |
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| 3 | * Copyright(c) 2006-2009 Ext JS, LLC |
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| 4 | * licensing@extjs.com |
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| 5 | * http://www.extjs.com/license |
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| 6 | */ |
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| 7 | /** |
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| 8 | * @class Ext.ListView.ColumnResizer |
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| 9 | * @extends Ext.util.Observable |
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| 10 | * <p>Supporting Class for Ext.ListView.</p> |
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| 11 | * @constructor |
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| 12 | * @param {Object} config |
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| 13 | */ |
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| 14 | Ext.ListView.ColumnResizer = Ext.extend(Ext.util.Observable, { |
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| 15 | /** |
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| 16 | * @cfg {Number} minPct The minimum percentage to allot for any column (defaults to <tt>.05</tt>) |
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| 17 | */ |
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| 18 | minPct: .05, |
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| 19 | |
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| 20 | constructor: function(config){ |
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| 21 | Ext.apply(this, config); |
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| 22 | Ext.ListView.ColumnResizer.superclass.constructor.call(this); |
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| 23 | }, |
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| 24 | init : function(listView){ |
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| 25 | this.view = listView; |
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| 26 | listView.on('render', this.initEvents, this); |
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| 27 | }, |
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| 28 | |
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| 29 | initEvents : function(view){ |
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| 30 | view.mon(view.innerHd, 'mousemove', this.handleHdMove, this); |
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| 31 | this.tracker = new Ext.dd.DragTracker({ |
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| 32 | onBeforeStart: this.onBeforeStart.createDelegate(this), |
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| 33 | onStart: this.onStart.createDelegate(this), |
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| 34 | onDrag: this.onDrag.createDelegate(this), |
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| 35 | onEnd: this.onEnd.createDelegate(this), |
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| 36 | tolerance: 3, |
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| 37 | autoStart: 300 |
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| 38 | }); |
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| 39 | this.tracker.initEl(view.innerHd); |
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| 40 | view.on('beforedestroy', this.tracker.destroy, this.tracker); |
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| 41 | }, |
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| 42 | |
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| 43 | handleHdMove : function(e, t){ |
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| 44 | var hw = 5; |
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| 45 | var x = e.getPageX(); |
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| 46 | var hd = e.getTarget('em', 3, true); |
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| 47 | if(hd){ |
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| 48 | var r = hd.getRegion(); |
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| 49 | var ss = hd.dom.style; |
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| 50 | var pn = hd.dom.parentNode; |
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| 51 | |
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| 52 | if(x - r.left <= hw && pn != pn.parentNode.firstChild){ |
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| 53 | this.activeHd = Ext.get(pn.previousSibling.firstChild); |
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| 54 | ss.cursor = Ext.isWebKit ? 'e-resize' : 'col-resize'; |
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| 55 | } else if(r.right - x <= hw && pn != pn.parentNode.lastChild.previousSibling){ |
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| 56 | this.activeHd = hd; |
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| 57 | ss.cursor = Ext.isWebKit ? 'w-resize' : 'col-resize'; |
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| 58 | } else{ |
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| 59 | delete this.activeHd; |
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| 60 | ss.cursor = ''; |
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| 61 | } |
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| 62 | } |
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| 63 | }, |
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| 64 | |
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| 65 | onBeforeStart : function(e){ |
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| 66 | this.dragHd = this.activeHd; |
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| 67 | return !!this.dragHd; |
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| 68 | }, |
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| 69 | |
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| 70 | onStart: function(e){ |
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| 71 | this.view.disableHeaders = true; |
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| 72 | this.proxy = this.view.el.createChild({cls:'x-list-resizer'}); |
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| 73 | this.proxy.setHeight(this.view.el.getHeight()); |
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| 74 | |
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| 75 | var x = this.tracker.getXY()[0]; |
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| 76 | var w = this.view.innerHd.getWidth(); |
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| 77 | |
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| 78 | this.hdX = this.dragHd.getX(); |
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| 79 | this.hdIndex = this.view.findHeaderIndex(this.dragHd); |
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| 80 | |
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| 81 | this.proxy.setX(this.hdX); |
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| 82 | this.proxy.setWidth(x-this.hdX); |
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| 83 | |
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| 84 | this.minWidth = w*this.minPct; |
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| 85 | this.maxWidth = w - (this.minWidth*(this.view.columns.length-1-this.hdIndex)); |
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| 86 | }, |
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| 87 | |
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| 88 | onDrag: function(e){ |
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| 89 | var cursorX = this.tracker.getXY()[0]; |
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| 90 | this.proxy.setWidth((cursorX-this.hdX).constrain(this.minWidth, this.maxWidth)); |
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| 91 | }, |
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| 92 | |
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| 93 | onEnd: function(e){ |
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| 94 | var nw = this.proxy.getWidth(); |
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| 95 | this.proxy.remove(); |
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| 96 | |
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| 97 | var index = this.hdIndex; |
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| 98 | var vw = this.view, cs = vw.columns, len = cs.length; |
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| 99 | var w = this.view.innerHd.getWidth(), minPct = this.minPct * 100; |
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| 100 | |
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| 101 | var pct = Math.ceil((nw*100) / w); |
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| 102 | var diff = cs[index].width - pct; |
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| 103 | var each = Math.floor(diff / (len-1-index)); |
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| 104 | var mod = diff - (each * (len-1-index)); |
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| 105 | |
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| 106 | for(var i = index+1; i < len; i++){ |
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| 107 | var cw = cs[i].width + each; |
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| 108 | var ncw = Math.max(minPct, cw); |
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| 109 | if(cw != ncw){ |
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| 110 | mod += cw - ncw; |
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| 111 | } |
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| 112 | cs[i].width = ncw; |
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| 113 | } |
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| 114 | cs[index].width = pct; |
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| 115 | cs[index+1].width += mod; |
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| 116 | delete this.dragHd; |
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| 117 | this.view.setHdWidths(); |
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| 118 | this.view.refresh(); |
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| 119 | setTimeout(function(){ |
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| 120 | vw.disableHeaders = false; |
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| 121 | }, 100); |
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| 122 | } |
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| 123 | }); |
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