[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.grid.RowSelectionModel |
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| 9 | * @extends Ext.grid.AbstractSelectionModel |
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| 10 | * The default SelectionModel used by {@link Ext.grid.GridPanel}. |
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| 11 | * It supports multiple selections and keyboard selection/navigation. The objects stored |
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| 12 | * as selections and returned by {@link #getSelected}, and {@link #getSelections} are |
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| 13 | * the {@link Ext.data.Record Record}s which provide the data for the selected rows. |
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| 14 | * @constructor |
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| 15 | * @param {Object} config |
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| 16 | */ |
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| 17 | Ext.grid.RowSelectionModel = function(config){ |
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| 18 | Ext.apply(this, config); |
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| 19 | this.selections = new Ext.util.MixedCollection(false, function(o){ |
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| 20 | return o.id; |
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| 21 | }); |
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| 22 | |
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| 23 | this.last = false; |
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| 24 | this.lastActive = false; |
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| 25 | |
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| 26 | this.addEvents( |
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| 27 | /** |
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| 28 | * @event selectionchange |
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| 29 | * Fires when the selection changes |
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| 30 | * @param {SelectionModel} this |
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| 31 | */ |
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| 32 | "selectionchange", |
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| 33 | /** |
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| 34 | * @event beforerowselect |
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| 35 | * Fires before a row is selected, return false to cancel the selection. |
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| 36 | * @param {SelectionModel} this |
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| 37 | * @param {Number} rowIndex The index to be selected |
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| 38 | * @param {Boolean} keepExisting False if other selections will be cleared |
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| 39 | * @param {Record} record The record to be selected |
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| 40 | */ |
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| 41 | "beforerowselect", |
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| 42 | /** |
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| 43 | * @event rowselect |
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| 44 | * Fires when a row is selected. |
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| 45 | * @param {SelectionModel} this |
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| 46 | * @param {Number} rowIndex The selected index |
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| 47 | * @param {Ext.data.Record} r The selected record |
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| 48 | */ |
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| 49 | "rowselect", |
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| 50 | /** |
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| 51 | * @event rowdeselect |
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| 52 | * Fires when a row is deselected. To prevent deselection |
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| 53 | * {@link Ext.grid.AbstractSelectionModel#lock lock the selections}. |
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| 54 | * @param {SelectionModel} this |
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| 55 | * @param {Number} rowIndex |
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| 56 | * @param {Record} record |
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| 57 | */ |
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| 58 | "rowdeselect" |
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| 59 | ); |
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| 60 | |
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| 61 | Ext.grid.RowSelectionModel.superclass.constructor.call(this); |
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| 62 | }; |
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| 63 | |
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| 64 | Ext.extend(Ext.grid.RowSelectionModel, Ext.grid.AbstractSelectionModel, { |
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| 65 | /** |
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| 66 | * @cfg {Boolean} singleSelect |
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| 67 | * <tt>true</tt> to allow selection of only one row at a time (defaults to <tt>false</tt> |
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| 68 | * allowing multiple selections) |
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| 69 | */ |
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| 70 | singleSelect : false, |
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| 71 | |
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| 72 | /** |
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| 73 | * @cfg {Boolean} moveEditorOnEnter |
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| 74 | * <tt>false</tt> to turn off moving the editor to the next row down when the enter key is pressed |
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| 75 | * or the next row up when shift + enter keys are pressed. |
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| 76 | */ |
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| 77 | // private |
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| 78 | initEvents : function(){ |
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| 79 | |
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| 80 | if(!this.grid.enableDragDrop && !this.grid.enableDrag){ |
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| 81 | this.grid.on("rowmousedown", this.handleMouseDown, this); |
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| 82 | }else{ // allow click to work like normal |
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| 83 | this.grid.on("rowclick", function(grid, rowIndex, e) { |
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| 84 | if(e.button === 0 && !e.shiftKey && !e.ctrlKey) { |
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| 85 | this.selectRow(rowIndex, false); |
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| 86 | grid.view.focusRow(rowIndex); |
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| 87 | } |
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| 88 | }, this); |
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| 89 | } |
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| 90 | |
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| 91 | this.rowNav = new Ext.KeyNav(this.grid.getGridEl(), { |
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| 92 | "up" : function(e){ |
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| 93 | if(!e.shiftKey || this.singleSelect){ |
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| 94 | this.selectPrevious(false); |
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| 95 | }else if(this.last !== false && this.lastActive !== false){ |
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| 96 | var last = this.last; |
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| 97 | this.selectRange(this.last, this.lastActive-1); |
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| 98 | this.grid.getView().focusRow(this.lastActive); |
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| 99 | if(last !== false){ |
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| 100 | this.last = last; |
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| 101 | } |
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| 102 | }else{ |
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| 103 | this.selectFirstRow(); |
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| 104 | } |
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| 105 | }, |
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| 106 | "down" : function(e){ |
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| 107 | if(!e.shiftKey || this.singleSelect){ |
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| 108 | this.selectNext(false); |
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| 109 | }else if(this.last !== false && this.lastActive !== false){ |
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| 110 | var last = this.last; |
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| 111 | this.selectRange(this.last, this.lastActive+1); |
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| 112 | this.grid.getView().focusRow(this.lastActive); |
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| 113 | if(last !== false){ |
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| 114 | this.last = last; |
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| 115 | } |
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| 116 | }else{ |
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| 117 | this.selectFirstRow(); |
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| 118 | } |
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| 119 | }, |
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| 120 | scope: this |
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| 121 | }); |
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| 122 | |
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| 123 | var view = this.grid.view; |
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| 124 | view.on("refresh", this.onRefresh, this); |
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| 125 | view.on("rowupdated", this.onRowUpdated, this); |
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| 126 | view.on("rowremoved", this.onRemove, this); |
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| 127 | }, |
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| 128 | |
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| 129 | // private |
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| 130 | onRefresh : function(){ |
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| 131 | var ds = this.grid.store, index; |
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| 132 | var s = this.getSelections(); |
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| 133 | this.clearSelections(true); |
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| 134 | for(var i = 0, len = s.length; i < len; i++){ |
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| 135 | var r = s[i]; |
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| 136 | if((index = ds.indexOfId(r.id)) != -1){ |
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| 137 | this.selectRow(index, true); |
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| 138 | } |
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| 139 | } |
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| 140 | if(s.length != this.selections.getCount()){ |
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| 141 | this.fireEvent("selectionchange", this); |
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| 142 | } |
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| 143 | }, |
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| 144 | |
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| 145 | // private |
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| 146 | onRemove : function(v, index, r){ |
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| 147 | if(this.selections.remove(r) !== false){ |
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| 148 | this.fireEvent('selectionchange', this); |
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| 149 | } |
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| 150 | }, |
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| 151 | |
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| 152 | // private |
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| 153 | onRowUpdated : function(v, index, r){ |
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| 154 | if(this.isSelected(r)){ |
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| 155 | v.onRowSelect(index); |
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| 156 | } |
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| 157 | }, |
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| 158 | |
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| 159 | /** |
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| 160 | * Select records. |
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| 161 | * @param {Array} records The records to select |
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| 162 | * @param {Boolean} keepExisting (optional) <tt>true</tt> to keep existing selections |
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| 163 | */ |
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| 164 | selectRecords : function(records, keepExisting){ |
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| 165 | if(!keepExisting){ |
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| 166 | this.clearSelections(); |
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| 167 | } |
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| 168 | var ds = this.grid.store; |
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| 169 | for(var i = 0, len = records.length; i < len; i++){ |
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| 170 | this.selectRow(ds.indexOf(records[i]), true); |
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| 171 | } |
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| 172 | }, |
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| 173 | |
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| 174 | /** |
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| 175 | * Gets the number of selected rows. |
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| 176 | * @return {Number} |
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| 177 | */ |
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| 178 | getCount : function(){ |
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| 179 | return this.selections.length; |
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| 180 | }, |
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| 181 | |
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| 182 | /** |
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| 183 | * Selects the first row in the grid. |
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| 184 | */ |
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| 185 | selectFirstRow : function(){ |
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| 186 | this.selectRow(0); |
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| 187 | }, |
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| 188 | |
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| 189 | /** |
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| 190 | * Select the last row. |
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| 191 | * @param {Boolean} keepExisting (optional) <tt>true</tt> to keep existing selections |
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| 192 | */ |
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| 193 | selectLastRow : function(keepExisting){ |
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| 194 | this.selectRow(this.grid.store.getCount() - 1, keepExisting); |
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| 195 | }, |
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| 196 | |
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| 197 | /** |
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| 198 | * Selects the row immediately following the last selected row. |
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| 199 | * @param {Boolean} keepExisting (optional) <tt>true</tt> to keep existing selections |
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| 200 | * @return {Boolean} <tt>true</tt> if there is a next row, else <tt>false</tt> |
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| 201 | */ |
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| 202 | selectNext : function(keepExisting){ |
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| 203 | if(this.hasNext()){ |
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| 204 | this.selectRow(this.last+1, keepExisting); |
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| 205 | this.grid.getView().focusRow(this.last); |
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| 206 | return true; |
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| 207 | } |
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| 208 | return false; |
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| 209 | }, |
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| 210 | |
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| 211 | /** |
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| 212 | * Selects the row that precedes the last selected row. |
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| 213 | * @param {Boolean} keepExisting (optional) <tt>true</tt> to keep existing selections |
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| 214 | * @return {Boolean} <tt>true</tt> if there is a previous row, else <tt>false</tt> |
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| 215 | */ |
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| 216 | selectPrevious : function(keepExisting){ |
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| 217 | if(this.hasPrevious()){ |
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| 218 | this.selectRow(this.last-1, keepExisting); |
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| 219 | this.grid.getView().focusRow(this.last); |
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| 220 | return true; |
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| 221 | } |
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| 222 | return false; |
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| 223 | }, |
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| 224 | |
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| 225 | /** |
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| 226 | * Returns true if there is a next record to select |
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| 227 | * @return {Boolean} |
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| 228 | */ |
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| 229 | hasNext : function(){ |
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| 230 | return this.last !== false && (this.last+1) < this.grid.store.getCount(); |
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| 231 | }, |
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| 232 | |
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| 233 | /** |
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| 234 | * Returns true if there is a previous record to select |
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| 235 | * @return {Boolean} |
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| 236 | */ |
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| 237 | hasPrevious : function(){ |
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| 238 | return !!this.last; |
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| 239 | }, |
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| 240 | |
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| 241 | |
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| 242 | /** |
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| 243 | * Returns the selected records |
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| 244 | * @return {Array} Array of selected records |
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| 245 | */ |
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| 246 | getSelections : function(){ |
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| 247 | return [].concat(this.selections.items); |
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| 248 | }, |
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| 249 | |
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| 250 | /** |
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| 251 | * Returns the first selected record. |
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| 252 | * @return {Record} |
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| 253 | */ |
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| 254 | getSelected : function(){ |
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| 255 | return this.selections.itemAt(0); |
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| 256 | }, |
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| 257 | |
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| 258 | /** |
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| 259 | * Calls the passed function with each selection. If the function returns |
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| 260 | * <tt>false</tt>, iteration is stopped and this function returns |
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| 261 | * <tt>false</tt>. Otherwise it returns <tt>true</tt>. |
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| 262 | * @param {Function} fn |
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| 263 | * @param {Object} scope (optional) |
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| 264 | * @return {Boolean} true if all selections were iterated |
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| 265 | */ |
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| 266 | each : function(fn, scope){ |
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| 267 | var s = this.getSelections(); |
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| 268 | for(var i = 0, len = s.length; i < len; i++){ |
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| 269 | if(fn.call(scope || this, s[i], i) === false){ |
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| 270 | return false; |
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| 271 | } |
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| 272 | } |
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| 273 | return true; |
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| 274 | }, |
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| 275 | |
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| 276 | /** |
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| 277 | * Clears all selections if the selection model |
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| 278 | * {@link Ext.grid.AbstractSelectionModel#isLocked is not locked}. |
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| 279 | * @param {Boolean} fast (optional) <tt>true</tt> to bypass the |
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| 280 | * conditional checks and events described in {@link #deselectRow}. |
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| 281 | */ |
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| 282 | clearSelections : function(fast){ |
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| 283 | if(this.isLocked()){ |
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| 284 | return; |
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| 285 | } |
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| 286 | if(fast !== true){ |
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| 287 | var ds = this.grid.store; |
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| 288 | var s = this.selections; |
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| 289 | s.each(function(r){ |
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| 290 | this.deselectRow(ds.indexOfId(r.id)); |
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| 291 | }, this); |
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| 292 | s.clear(); |
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| 293 | }else{ |
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| 294 | this.selections.clear(); |
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| 295 | } |
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| 296 | this.last = false; |
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| 297 | }, |
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| 298 | |
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| 299 | |
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| 300 | /** |
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| 301 | * Selects all rows if the selection model |
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| 302 | * {@link Ext.grid.AbstractSelectionModel#isLocked is not locked}. |
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| 303 | */ |
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| 304 | selectAll : function(){ |
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| 305 | if(this.isLocked()){ |
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| 306 | return; |
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| 307 | } |
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| 308 | this.selections.clear(); |
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| 309 | for(var i = 0, len = this.grid.store.getCount(); i < len; i++){ |
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| 310 | this.selectRow(i, true); |
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| 311 | } |
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| 312 | }, |
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| 313 | |
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| 314 | /** |
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| 315 | * Returns <tt>true</tt> if there is a selection. |
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| 316 | * @return {Boolean} |
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| 317 | */ |
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| 318 | hasSelection : function(){ |
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| 319 | return this.selections.length > 0; |
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| 320 | }, |
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| 321 | |
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| 322 | /** |
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| 323 | * Returns <tt>true</tt> if the specified row is selected. |
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| 324 | * @param {Number/Record} index The record or index of the record to check |
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| 325 | * @return {Boolean} |
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| 326 | */ |
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| 327 | isSelected : function(index){ |
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| 328 | var r = typeof index == "number" ? this.grid.store.getAt(index) : index; |
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| 329 | return (r && this.selections.key(r.id) ? true : false); |
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| 330 | }, |
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| 331 | |
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| 332 | /** |
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| 333 | * Returns <tt>true</tt> if the specified record id is selected. |
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| 334 | * @param {String} id The id of record to check |
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| 335 | * @return {Boolean} |
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| 336 | */ |
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| 337 | isIdSelected : function(id){ |
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| 338 | return (this.selections.key(id) ? true : false); |
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| 339 | }, |
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| 340 | |
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| 341 | // private |
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| 342 | handleMouseDown : function(g, rowIndex, e){ |
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| 343 | if(e.button !== 0 || this.isLocked()){ |
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| 344 | return; |
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| 345 | } |
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| 346 | var view = this.grid.getView(); |
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| 347 | if(e.shiftKey && !this.singleSelect && this.last !== false){ |
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| 348 | var last = this.last; |
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| 349 | this.selectRange(last, rowIndex, e.ctrlKey); |
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| 350 | this.last = last; // reset the last |
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| 351 | view.focusRow(rowIndex); |
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| 352 | }else{ |
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| 353 | var isSelected = this.isSelected(rowIndex); |
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| 354 | if(e.ctrlKey && isSelected){ |
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| 355 | this.deselectRow(rowIndex); |
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| 356 | }else if(!isSelected || this.getCount() > 1){ |
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| 357 | this.selectRow(rowIndex, e.ctrlKey || e.shiftKey); |
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| 358 | view.focusRow(rowIndex); |
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| 359 | } |
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| 360 | } |
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| 361 | }, |
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| 362 | |
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| 363 | /** |
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| 364 | * Selects multiple rows. |
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| 365 | * @param {Array} rows Array of the indexes of the row to select |
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| 366 | * @param {Boolean} keepExisting (optional) <tt>true</tt> to keep |
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| 367 | * existing selections (defaults to <tt>false</tt>) |
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| 368 | */ |
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| 369 | selectRows : function(rows, keepExisting){ |
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| 370 | if(!keepExisting){ |
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| 371 | this.clearSelections(); |
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| 372 | } |
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| 373 | for(var i = 0, len = rows.length; i < len; i++){ |
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| 374 | this.selectRow(rows[i], true); |
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| 375 | } |
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| 376 | }, |
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| 377 | |
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| 378 | /** |
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| 379 | * Selects a range of rows if the selection model |
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| 380 | * {@link Ext.grid.AbstractSelectionModel#isLocked is not locked}. |
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| 381 | * All rows in between startRow and endRow are also selected. |
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| 382 | * @param {Number} startRow The index of the first row in the range |
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| 383 | * @param {Number} endRow The index of the last row in the range |
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| 384 | * @param {Boolean} keepExisting (optional) True to retain existing selections |
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| 385 | */ |
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| 386 | selectRange : function(startRow, endRow, keepExisting){ |
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| 387 | var i; |
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| 388 | if(this.isLocked()){ |
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| 389 | return; |
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| 390 | } |
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| 391 | if(!keepExisting){ |
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| 392 | this.clearSelections(); |
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| 393 | } |
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| 394 | if(startRow <= endRow){ |
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| 395 | for(i = startRow; i <= endRow; i++){ |
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| 396 | this.selectRow(i, true); |
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| 397 | } |
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| 398 | }else{ |
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| 399 | for(i = startRow; i >= endRow; i--){ |
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| 400 | this.selectRow(i, true); |
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| 401 | } |
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| 402 | } |
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| 403 | }, |
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| 404 | |
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| 405 | /** |
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| 406 | * Deselects a range of rows if the selection model |
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| 407 | * {@link Ext.grid.AbstractSelectionModel#isLocked is not locked}. |
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| 408 | * All rows in between startRow and endRow are also deselected. |
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| 409 | * @param {Number} startRow The index of the first row in the range |
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| 410 | * @param {Number} endRow The index of the last row in the range |
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| 411 | */ |
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| 412 | deselectRange : function(startRow, endRow, preventViewNotify){ |
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| 413 | if(this.isLocked()){ |
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| 414 | return; |
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| 415 | } |
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| 416 | for(var i = startRow; i <= endRow; i++){ |
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| 417 | this.deselectRow(i, preventViewNotify); |
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| 418 | } |
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| 419 | }, |
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| 420 | |
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| 421 | /** |
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| 422 | * Selects a row. Before selecting a row, checks if the selection model |
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| 423 | * {@link Ext.grid.AbstractSelectionModel#isLocked is locked} and fires the |
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| 424 | * {@link #beforerowselect} event. If these checks are satisfied the row |
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| 425 | * will be selected and followed up by firing the {@link #rowselect} and |
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| 426 | * {@link #selectionchange} events. |
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| 427 | * @param {Number} row The index of the row to select |
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| 428 | * @param {Boolean} keepExisting (optional) <tt>true</tt> to keep existing selections |
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| 429 | * @param {Boolean} preventViewNotify (optional) Specify <tt>true</tt> to |
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| 430 | * prevent notifying the view (disables updating the selected appearance) |
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| 431 | */ |
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| 432 | selectRow : function(index, keepExisting, preventViewNotify){ |
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| 433 | if(this.isLocked() || (index < 0 || index >= this.grid.store.getCount()) || (keepExisting && this.isSelected(index))){ |
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| 434 | return; |
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| 435 | } |
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| 436 | var r = this.grid.store.getAt(index); |
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| 437 | if(r && this.fireEvent("beforerowselect", this, index, keepExisting, r) !== false){ |
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| 438 | if(!keepExisting || this.singleSelect){ |
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| 439 | this.clearSelections(); |
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| 440 | } |
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| 441 | this.selections.add(r); |
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| 442 | this.last = this.lastActive = index; |
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| 443 | if(!preventViewNotify){ |
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| 444 | this.grid.getView().onRowSelect(index); |
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| 445 | } |
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| 446 | this.fireEvent("rowselect", this, index, r); |
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| 447 | this.fireEvent("selectionchange", this); |
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| 448 | } |
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| 449 | }, |
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| 450 | |
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| 451 | /** |
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| 452 | * Deselects a row. Before deselecting a row, checks if the selection model |
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| 453 | * {@link Ext.grid.AbstractSelectionModel#isLocked is locked}. |
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| 454 | * If this check is satisfied the row will be deselected and followed up by |
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| 455 | * firing the {@link #rowdeselect} and {@link #selectionchange} events. |
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| 456 | * @param {Number} row The index of the row to deselect |
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| 457 | * @param {Boolean} preventViewNotify (optional) Specify <tt>true</tt> to |
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| 458 | * prevent notifying the view (disables updating the selected appearance) |
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| 459 | */ |
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| 460 | deselectRow : function(index, preventViewNotify){ |
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| 461 | if(this.isLocked()){ |
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| 462 | return; |
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| 463 | } |
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| 464 | if(this.last == index){ |
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| 465 | this.last = false; |
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| 466 | } |
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| 467 | if(this.lastActive == index){ |
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| 468 | this.lastActive = false; |
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| 469 | } |
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| 470 | var r = this.grid.store.getAt(index); |
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| 471 | if(r){ |
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| 472 | this.selections.remove(r); |
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| 473 | if(!preventViewNotify){ |
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| 474 | this.grid.getView().onRowDeselect(index); |
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| 475 | } |
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| 476 | this.fireEvent("rowdeselect", this, index, r); |
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| 477 | this.fireEvent("selectionchange", this); |
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| 478 | } |
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| 479 | }, |
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| 480 | |
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| 481 | // private |
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| 482 | restoreLast : function(){ |
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| 483 | if(this._last){ |
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| 484 | this.last = this._last; |
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| 485 | } |
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| 486 | }, |
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| 487 | |
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| 488 | // private |
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| 489 | acceptsNav : function(row, col, cm){ |
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| 490 | return !cm.isHidden(col) && cm.isCellEditable(col, row); |
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| 491 | }, |
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| 492 | |
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| 493 | // private |
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| 494 | onEditorKey : function(field, e){ |
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| 495 | var k = e.getKey(), newCell, g = this.grid, ed = g.activeEditor; |
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| 496 | var shift = e.shiftKey; |
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| 497 | if(k == e.TAB){ |
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| 498 | e.stopEvent(); |
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| 499 | ed.completeEdit(); |
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| 500 | if(shift){ |
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| 501 | newCell = g.walkCells(ed.row, ed.col-1, -1, this.acceptsNav, this); |
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| 502 | }else{ |
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| 503 | newCell = g.walkCells(ed.row, ed.col+1, 1, this.acceptsNav, this); |
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| 504 | } |
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| 505 | }else if(k == e.ENTER){ |
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| 506 | e.stopEvent(); |
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| 507 | ed.completeEdit(); |
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| 508 | if(this.moveEditorOnEnter !== false){ |
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| 509 | if(shift){ |
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| 510 | newCell = g.walkCells(ed.row - 1, ed.col, -1, this.acceptsNav, this); |
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| 511 | }else{ |
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| 512 | newCell = g.walkCells(ed.row + 1, ed.col, 1, this.acceptsNav, this); |
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| 513 | } |
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| 514 | } |
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| 515 | }else if(k == e.ESC){ |
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| 516 | ed.cancelEdit(); |
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| 517 | } |
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| 518 | if(newCell){ |
---|
| 519 | g.startEditing(newCell[0], newCell[1]); |
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| 520 | } |
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| 521 | }, |
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| 522 | |
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| 523 | destroy: function(){ |
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| 524 | if(this.rowNav){ |
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| 525 | this.rowNav.disable(); |
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| 526 | this.rowNav = null; |
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| 527 | } |
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| 528 | Ext.grid.RowSelectionModel.superclass.destroy.call(this); |
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| 529 | } |
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| 530 | }); |
---|