1 | /* |
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2 | * Ext JS Library 2.2.1 |
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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 | * |
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6 | * http://extjs.com/license |
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7 | */ |
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8 | |
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9 | /** |
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10 | @class Ext.grid.RowSelectionModel |
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11 | * @extends Ext.grid.AbstractSelectionModel |
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12 | * The default SelectionModel used by {@link Ext.grid.GridPanel}. |
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13 | * It supports multiple selections and keyboard selection/navigation. The objects stored |
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14 | * as selections and returned by {@link #getSelected}, and {@link #getSelections} are |
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15 | * the {@link Ext.data.Record Record}s which provide the data for the selected rows. |
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16 | * @constructor |
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17 | * @param {Object} config |
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18 | */ |
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19 | Ext.grid.RowSelectionModel = function(config){ |
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20 | Ext.apply(this, config); |
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21 | this.selections = new Ext.util.MixedCollection(false, function(o){ |
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22 | return o.id; |
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23 | }); |
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24 | |
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25 | this.last = false; |
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26 | this.lastActive = false; |
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27 | |
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28 | this.addEvents( |
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29 | /** |
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30 | * @event selectionchange |
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31 | * Fires when the selection changes |
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32 | * @param {SelectionModel} this |
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33 | */ |
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34 | "selectionchange", |
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35 | /** |
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36 | * @event beforerowselect |
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37 | * Fires when a row is being selected, return false to cancel. |
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38 | * @param {SelectionModel} this |
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39 | * @param {Number} rowIndex The index to be selected |
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40 | * @param {Boolean} keepExisting False if other selections will be cleared |
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41 | * @param {Record} record The record to be selected |
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42 | */ |
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43 | "beforerowselect", |
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44 | /** |
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45 | * @event rowselect |
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46 | * Fires when a row is selected. |
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47 | * @param {SelectionModel} this |
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48 | * @param {Number} rowIndex The selected index |
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49 | * @param {Ext.data.Record} r The selected record |
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50 | */ |
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51 | "rowselect", |
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52 | /** |
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53 | * @event rowdeselect |
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54 | * Fires when a row is deselected. |
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55 | * @param {SelectionModel} this |
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56 | * @param {Number} rowIndex |
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57 | * @param {Record} record |
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58 | */ |
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59 | "rowdeselect" |
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60 | ); |
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61 | |
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62 | Ext.grid.RowSelectionModel.superclass.constructor.call(this); |
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63 | }; |
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64 | |
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65 | Ext.extend(Ext.grid.RowSelectionModel, Ext.grid.AbstractSelectionModel, { |
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66 | /** |
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67 | * @cfg {Boolean} singleSelect |
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68 | * True to allow selection of only one row at a time (defaults to false) |
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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 | * False to turn off moving the editor to the next cell when the enter key is pressed |
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75 | */ |
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76 | // private |
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77 | initEvents : function(){ |
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78 | |
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79 | if(!this.grid.enableDragDrop && !this.grid.enableDrag){ |
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80 | this.grid.on("rowmousedown", this.handleMouseDown, this); |
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81 | }else{ // allow click to work like normal |
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82 | this.grid.on("rowclick", function(grid, rowIndex, e) { |
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83 | if(e.button === 0 && !e.shiftKey && !e.ctrlKey) { |
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84 | this.selectRow(rowIndex, false); |
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85 | grid.view.focusRow(rowIndex); |
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86 | } |
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87 | }, this); |
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88 | } |
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89 | |
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90 | this.rowNav = new Ext.KeyNav(this.grid.getGridEl(), { |
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91 | "up" : function(e){ |
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92 | if(!e.shiftKey || this.singleSelect){ |
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93 | this.selectPrevious(false); |
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94 | }else if(this.last !== false && this.lastActive !== false){ |
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95 | var last = this.last; |
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96 | this.selectRange(this.last, this.lastActive-1); |
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97 | this.grid.getView().focusRow(this.lastActive); |
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98 | if(last !== false){ |
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99 | this.last = last; |
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100 | } |
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101 | }else{ |
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102 | this.selectFirstRow(); |
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103 | } |
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104 | }, |
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105 | "down" : function(e){ |
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106 | if(!e.shiftKey || this.singleSelect){ |
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107 | this.selectNext(false); |
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108 | }else if(this.last !== false && this.lastActive !== false){ |
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109 | var last = this.last; |
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110 | this.selectRange(this.last, this.lastActive+1); |
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111 | this.grid.getView().focusRow(this.lastActive); |
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112 | if(last !== false){ |
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113 | this.last = last; |
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114 | } |
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115 | }else{ |
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116 | this.selectFirstRow(); |
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117 | } |
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118 | }, |
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119 | scope: this |
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120 | }); |
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121 | |
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122 | var view = this.grid.view; |
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123 | view.on("refresh", this.onRefresh, this); |
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124 | view.on("rowupdated", this.onRowUpdated, this); |
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125 | view.on("rowremoved", this.onRemove, this); |
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126 | }, |
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127 | |
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128 | // private |
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129 | onRefresh : function(){ |
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130 | var ds = this.grid.store, index; |
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131 | var s = this.getSelections(); |
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132 | this.clearSelections(true); |
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133 | for(var i = 0, len = s.length; i < len; i++){ |
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134 | var r = s[i]; |
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135 | if((index = ds.indexOfId(r.id)) != -1){ |
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136 | this.selectRow(index, true); |
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137 | } |
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138 | } |
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139 | if(s.length != this.selections.getCount()){ |
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140 | this.fireEvent("selectionchange", this); |
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141 | } |
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142 | }, |
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143 | |
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144 | // private |
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145 | onRemove : function(v, index, r){ |
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146 | if(this.selections.remove(r) !== false){ |
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147 | this.fireEvent('selectionchange', this); |
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148 | } |
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149 | }, |
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150 | |
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151 | // private |
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152 | onRowUpdated : function(v, index, r){ |
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153 | if(this.isSelected(r)){ |
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154 | v.onRowSelect(index); |
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155 | } |
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156 | }, |
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157 | |
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158 | /** |
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159 | * Select records. |
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160 | * @param {Array} records The records to select |
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161 | * @param {Boolean} keepExisting (optional) True to keep existing selections |
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162 | */ |
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163 | selectRecords : function(records, keepExisting){ |
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164 | if(!keepExisting){ |
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165 | this.clearSelections(); |
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166 | } |
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167 | var ds = this.grid.store; |
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168 | for(var i = 0, len = records.length; i < len; i++){ |
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169 | this.selectRow(ds.indexOf(records[i]), true); |
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170 | } |
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171 | }, |
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172 | |
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173 | /** |
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174 | * Gets the number of selected rows. |
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175 | * @return {Number} |
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176 | */ |
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177 | getCount : function(){ |
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178 | return this.selections.length; |
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179 | }, |
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180 | |
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181 | /** |
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182 | * Selects the first row in the grid. |
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183 | */ |
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184 | selectFirstRow : function(){ |
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185 | this.selectRow(0); |
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186 | }, |
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187 | |
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188 | /** |
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189 | * Select the last row. |
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190 | * @param {Boolean} keepExisting (optional) True to keep existing selections |
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191 | */ |
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192 | selectLastRow : function(keepExisting){ |
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193 | this.selectRow(this.grid.store.getCount() - 1, keepExisting); |
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194 | }, |
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195 | |
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196 | /** |
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197 | * Selects the row immediately following the last selected row. |
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198 | * @param {Boolean} keepExisting (optional) True to keep existing selections |
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199 | * @return {Boolean} True if there is a next row, else false |
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200 | */ |
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201 | selectNext : function(keepExisting){ |
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202 | if(this.hasNext()){ |
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203 | this.selectRow(this.last+1, keepExisting); |
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204 | this.grid.getView().focusRow(this.last); |
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205 | return true; |
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206 | } |
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207 | return false; |
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208 | }, |
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209 | |
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210 | /** |
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211 | * Selects the row that precedes the last selected row. |
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212 | * @param {Boolean} keepExisting (optional) True to keep existing selections |
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213 | * @return {Boolean} True if there is a previous row, else false |
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214 | */ |
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215 | selectPrevious : function(keepExisting){ |
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216 | if(this.hasPrevious()){ |
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217 | this.selectRow(this.last-1, keepExisting); |
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218 | this.grid.getView().focusRow(this.last); |
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219 | return true; |
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220 | } |
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221 | return false; |
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222 | }, |
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223 | |
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224 | /** |
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225 | * Returns true if there is a next record to select |
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226 | * @return {Boolean} |
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227 | */ |
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228 | hasNext : function(){ |
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229 | return this.last !== false && (this.last+1) < this.grid.store.getCount(); |
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230 | }, |
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231 | |
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232 | /** |
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233 | * Returns true if there is a previous record to select |
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234 | * @return {Boolean} |
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235 | */ |
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236 | hasPrevious : function(){ |
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237 | return !!this.last; |
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238 | }, |
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239 | |
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240 | |
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241 | /** |
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242 | * Returns the selected records |
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243 | * @return {Array} Array of selected records |
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244 | */ |
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245 | getSelections : function(){ |
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246 | return [].concat(this.selections.items); |
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247 | }, |
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248 | |
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249 | /** |
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250 | * Returns the first selected record. |
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251 | * @return {Record} |
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252 | */ |
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253 | getSelected : function(){ |
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254 | return this.selections.itemAt(0); |
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255 | }, |
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256 | |
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257 | /** |
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258 | * Calls the passed function with each selection. If the function returns false, iteration is |
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259 | * stopped and this function returns false. Otherwise it returns true. |
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260 | * @param {Function} fn |
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261 | * @param {Object} scope (optional) |
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262 | * @return {Boolean} true if all selections were iterated |
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263 | */ |
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264 | each : function(fn, scope){ |
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265 | var s = this.getSelections(); |
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266 | for(var i = 0, len = s.length; i < len; i++){ |
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267 | if(fn.call(scope || this, s[i], i) === false){ |
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268 | return false; |
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269 | } |
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270 | } |
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271 | return true; |
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272 | }, |
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273 | |
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274 | /** |
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275 | * Clears all selections. |
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276 | */ |
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277 | clearSelections : function(fast){ |
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278 | if(this.isLocked()) return; |
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279 | if(fast !== true){ |
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280 | var ds = this.grid.store; |
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281 | var s = this.selections; |
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282 | s.each(function(r){ |
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283 | this.deselectRow(ds.indexOfId(r.id)); |
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284 | }, this); |
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285 | s.clear(); |
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286 | }else{ |
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287 | this.selections.clear(); |
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288 | } |
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289 | this.last = false; |
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290 | }, |
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291 | |
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292 | |
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293 | /** |
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294 | * Selects all rows. |
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295 | */ |
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296 | selectAll : function(){ |
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297 | if(this.isLocked()) return; |
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298 | this.selections.clear(); |
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299 | for(var i = 0, len = this.grid.store.getCount(); i < len; i++){ |
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300 | this.selectRow(i, true); |
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301 | } |
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302 | }, |
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303 | |
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304 | /** |
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305 | * Returns True if there is a selection. |
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306 | * @return {Boolean} |
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307 | */ |
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308 | hasSelection : function(){ |
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309 | return this.selections.length > 0; |
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310 | }, |
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311 | |
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312 | /** |
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313 | * Returns True if the specified row is selected. |
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314 | * @param {Number/Record} record The record or index of the record to check |
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315 | * @return {Boolean} |
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316 | */ |
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317 | isSelected : function(index){ |
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318 | var r = typeof index == "number" ? this.grid.store.getAt(index) : index; |
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319 | return (r && this.selections.key(r.id) ? true : false); |
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320 | }, |
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321 | |
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322 | /** |
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323 | * Returns True if the specified record id is selected. |
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324 | * @param {String} id The id of record to check |
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325 | * @return {Boolean} |
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326 | */ |
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327 | isIdSelected : function(id){ |
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328 | return (this.selections.key(id) ? true : false); |
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329 | }, |
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330 | |
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331 | // private |
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332 | handleMouseDown : function(g, rowIndex, e){ |
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333 | if(e.button !== 0 || this.isLocked()){ |
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334 | return; |
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335 | }; |
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336 | var view = this.grid.getView(); |
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337 | if(e.shiftKey && !this.singleSelect && this.last !== false){ |
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338 | var last = this.last; |
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339 | this.selectRange(last, rowIndex, e.ctrlKey); |
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340 | this.last = last; // reset the last |
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341 | view.focusRow(rowIndex); |
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342 | }else{ |
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343 | var isSelected = this.isSelected(rowIndex); |
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344 | if(e.ctrlKey && isSelected){ |
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345 | this.deselectRow(rowIndex); |
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346 | }else if(!isSelected || this.getCount() > 1){ |
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347 | this.selectRow(rowIndex, e.ctrlKey || e.shiftKey); |
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348 | view.focusRow(rowIndex); |
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349 | } |
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350 | } |
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351 | }, |
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352 | |
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353 | /** |
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354 | * Selects multiple rows. |
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355 | * @param {Array} rows Array of the indexes of the row to select |
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356 | * @param {Boolean} keepExisting (optional) True to keep existing selections (defaults to false) |
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357 | */ |
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358 | selectRows : function(rows, keepExisting){ |
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359 | if(!keepExisting){ |
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360 | this.clearSelections(); |
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361 | } |
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362 | for(var i = 0, len = rows.length; i < len; i++){ |
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363 | this.selectRow(rows[i], true); |
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364 | } |
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365 | }, |
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366 | |
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367 | /** |
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368 | * Selects a range of rows. All rows in between startRow and endRow are also selected. |
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369 | * @param {Number} startRow The index of the first row in the range |
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370 | * @param {Number} endRow The index of the last row in the range |
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371 | * @param {Boolean} keepExisting (optional) True to retain existing selections |
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372 | */ |
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373 | selectRange : function(startRow, endRow, keepExisting){ |
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374 | if(this.isLocked()) return; |
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375 | if(!keepExisting){ |
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376 | this.clearSelections(); |
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377 | } |
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378 | if(startRow <= endRow){ |
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379 | for(var i = startRow; i <= endRow; i++){ |
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380 | this.selectRow(i, true); |
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381 | } |
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382 | }else{ |
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383 | for(var i = startRow; i >= endRow; i--){ |
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384 | this.selectRow(i, true); |
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385 | } |
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386 | } |
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387 | }, |
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388 | |
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389 | /** |
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390 | * Deselects a range of rows. All rows in between startRow and endRow are also deselected. |
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391 | * @param {Number} startRow The index of the first row in the range |
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392 | * @param {Number} endRow The index of the last row in the range |
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393 | */ |
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394 | deselectRange : function(startRow, endRow, preventViewNotify){ |
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395 | if(this.isLocked()) return; |
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396 | for(var i = startRow; i <= endRow; i++){ |
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397 | this.deselectRow(i, preventViewNotify); |
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398 | } |
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399 | }, |
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400 | |
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401 | /** |
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402 | * Selects a row. |
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403 | * @param {Number} row The index of the row to select |
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404 | * @param {Boolean} keepExisting (optional) True to keep existing selections |
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405 | */ |
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406 | selectRow : function(index, keepExisting, preventViewNotify){ |
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407 | if(this.isLocked() || (index < 0 || index >= this.grid.store.getCount()) || this.isSelected(index)) return; |
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408 | var r = this.grid.store.getAt(index); |
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409 | if(r && this.fireEvent("beforerowselect", this, index, keepExisting, r) !== false){ |
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410 | if(!keepExisting || this.singleSelect){ |
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411 | this.clearSelections(); |
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412 | } |
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413 | this.selections.add(r); |
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414 | this.last = this.lastActive = index; |
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415 | if(!preventViewNotify){ |
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416 | this.grid.getView().onRowSelect(index); |
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417 | } |
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418 | this.fireEvent("rowselect", this, index, r); |
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419 | this.fireEvent("selectionchange", this); |
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420 | } |
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421 | }, |
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422 | |
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423 | /** |
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424 | * Deselects a row. |
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425 | * @param {Number} row The index of the row to deselect |
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426 | */ |
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427 | deselectRow : function(index, preventViewNotify){ |
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428 | if(this.isLocked()) return; |
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429 | if(this.last == index){ |
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430 | this.last = false; |
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431 | } |
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432 | if(this.lastActive == index){ |
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433 | this.lastActive = false; |
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434 | } |
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435 | var r = this.grid.store.getAt(index); |
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436 | if(r){ |
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437 | this.selections.remove(r); |
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438 | if(!preventViewNotify){ |
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439 | this.grid.getView().onRowDeselect(index); |
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440 | } |
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441 | this.fireEvent("rowdeselect", this, index, r); |
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442 | this.fireEvent("selectionchange", this); |
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443 | } |
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444 | }, |
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445 | |
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446 | // private |
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447 | restoreLast : function(){ |
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448 | if(this._last){ |
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449 | this.last = this._last; |
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450 | } |
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451 | }, |
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452 | |
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453 | // private |
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454 | acceptsNav : function(row, col, cm){ |
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455 | return !cm.isHidden(col) && cm.isCellEditable(col, row); |
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456 | }, |
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457 | |
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458 | // private |
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459 | onEditorKey : function(field, e){ |
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460 | var k = e.getKey(), newCell, g = this.grid, ed = g.activeEditor; |
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461 | var shift = e.shiftKey; |
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462 | if(k == e.TAB){ |
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463 | e.stopEvent(); |
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464 | ed.completeEdit(); |
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465 | if(shift){ |
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466 | newCell = g.walkCells(ed.row, ed.col-1, -1, this.acceptsNav, this); |
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467 | }else{ |
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468 | newCell = g.walkCells(ed.row, ed.col+1, 1, this.acceptsNav, this); |
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469 | } |
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470 | }else if(k == e.ENTER){ |
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471 | e.stopEvent(); |
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472 | ed.completeEdit(); |
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473 | if(this.moveEditorOnEnter !== false){ |
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474 | if(shift){ |
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475 | newCell = g.walkCells(ed.row - 1, ed.col, -1, this.acceptsNav, this); |
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476 | }else{ |
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477 | newCell = g.walkCells(ed.row + 1, ed.col, 1, this.acceptsNav, this); |
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478 | } |
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479 | } |
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480 | }else if(k == e.ESC){ |
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481 | ed.cancelEdit(); |
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482 | } |
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483 | if(newCell){ |
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484 | g.startEditing(newCell[0], newCell[1]); |
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485 | } |
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486 | } |
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487 | }); |
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