[76] | 1 | /*! |
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| 2 | * Ext JS Library 3.4.0 |
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| 3 | * Copyright(c) 2006-2011 Sencha Inc. |
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| 4 | * licensing@sencha.com |
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| 5 | * http://www.sencha.com/license |
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| 6 | */ |
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| 7 | /** |
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| 8 | * @class Ext.list.ColumnResizer |
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| 9 | * @extends Ext.util.Observable |
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| 10 | * <p>Supporting Class for Ext.list.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.list.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.list.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 handleWidth = 5, |
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| 45 | x = e.getPageX(), |
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| 46 | header = e.getTarget('em', 3, true); |
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| 47 | if(header){ |
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| 48 | var region = header.getRegion(), |
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| 49 | style = header.dom.style, |
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| 50 | parentNode = header.dom.parentNode; |
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| 51 | |
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| 52 | if(x - region.left <= handleWidth && parentNode != parentNode.parentNode.firstChild){ |
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| 53 | this.activeHd = Ext.get(parentNode.previousSibling.firstChild); |
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| 54 | style.cursor = Ext.isWebKit ? 'e-resize' : 'col-resize'; |
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| 55 | } else if(region.right - x <= handleWidth && parentNode != parentNode.parentNode.lastChild.previousSibling){ |
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| 56 | this.activeHd = header; |
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| 57 | style.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 | style.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 | |
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| 72 | var me = this, |
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| 73 | view = me.view, |
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| 74 | dragHeader = me.dragHd, |
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| 75 | x = me.tracker.getXY()[0]; |
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| 76 | |
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| 77 | me.proxy = view.el.createChild({cls:'x-list-resizer'}); |
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| 78 | me.dragX = dragHeader.getX(); |
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| 79 | me.headerIndex = view.findHeaderIndex(dragHeader); |
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| 80 | |
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| 81 | me.headersDisabled = view.disableHeaders; |
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| 82 | view.disableHeaders = true; |
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| 83 | |
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| 84 | me.proxy.setHeight(view.el.getHeight()); |
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| 85 | me.proxy.setX(me.dragX); |
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| 86 | me.proxy.setWidth(x - me.dragX); |
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| 87 | |
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| 88 | this.setBoundaries(); |
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| 89 | |
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| 90 | }, |
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| 91 | |
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| 92 | // Sets up the boundaries for the drag/drop operation |
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| 93 | setBoundaries: function(relativeX){ |
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| 94 | var view = this.view, |
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| 95 | headerIndex = this.headerIndex, |
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| 96 | width = view.innerHd.getWidth(), |
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| 97 | relativeX = view.innerHd.getX(), |
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| 98 | minWidth = Math.ceil(width * this.minPct), |
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| 99 | maxWidth = width - minWidth, |
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| 100 | numColumns = view.columns.length, |
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| 101 | headers = view.innerHd.select('em', true), |
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| 102 | minX = minWidth + relativeX, |
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| 103 | maxX = maxWidth + relativeX, |
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| 104 | header; |
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| 105 | |
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| 106 | if (numColumns == 2) { |
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| 107 | this.minX = minX; |
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| 108 | this.maxX = maxX; |
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| 109 | }else{ |
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| 110 | header = headers.item(headerIndex + 2); |
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| 111 | this.minX = headers.item(headerIndex).getX() + minWidth; |
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| 112 | this.maxX = header ? header.getX() - minWidth : maxX; |
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| 113 | if (headerIndex == 0) { |
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| 114 | // First |
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| 115 | this.minX = minX; |
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| 116 | } else if (headerIndex == numColumns - 2) { |
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| 117 | // Last |
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| 118 | this.maxX = maxX; |
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| 119 | } |
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| 120 | } |
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| 121 | }, |
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| 122 | |
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| 123 | onDrag: function(e){ |
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| 124 | var me = this, |
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| 125 | cursorX = me.tracker.getXY()[0].constrain(me.minX, me.maxX); |
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| 126 | |
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| 127 | me.proxy.setWidth(cursorX - this.dragX); |
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| 128 | }, |
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| 129 | |
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| 130 | onEnd: function(e){ |
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| 131 | /* calculate desired width by measuring proxy and then remove it */ |
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| 132 | var newWidth = this.proxy.getWidth(), |
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| 133 | index = this.headerIndex, |
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| 134 | view = this.view, |
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| 135 | columns = view.columns, |
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| 136 | width = view.innerHd.getWidth(), |
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| 137 | newPercent = Math.ceil(newWidth * view.maxColumnWidth / width) / 100, |
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| 138 | disabled = this.headersDisabled, |
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| 139 | headerCol = columns[index], |
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| 140 | otherCol = columns[index + 1], |
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| 141 | totalPercent = headerCol.width + otherCol.width; |
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| 142 | |
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| 143 | this.proxy.remove(); |
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| 144 | |
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| 145 | headerCol.width = newPercent; |
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| 146 | otherCol.width = totalPercent - newPercent; |
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| 147 | |
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| 148 | delete this.dragHd; |
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| 149 | view.setHdWidths(); |
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| 150 | view.refresh(); |
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| 151 | |
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| 152 | setTimeout(function(){ |
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| 153 | view.disableHeaders = disabled; |
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| 154 | }, 100); |
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| 155 | } |
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| 156 | }); |
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| 157 | |
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| 158 | // Backwards compatibility alias |
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| 159 | Ext.ListView.ColumnResizer = Ext.list.ColumnResizer; |
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