1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
|
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>The source code</title>
<link href="../resources/prettify/prettify.css" type="text/css" rel="stylesheet" />
<script type="text/javascript" src="../resources/prettify/prettify.js"></script>
</head>
<body onload="prettyPrint();">
<pre class="prettyprint lang-js">/*!
* Ext JS Library 3.4.0
* Copyright(c) 2006-2011 Sencha Inc.
* licensing@sencha.com
* http://www.sencha.com/license
*/
<div id="cls-Ext.grid.CellSelectionModel"></div>/**
* @class Ext.grid.CellSelectionModel
* @extends Ext.grid.AbstractSelectionModel
* This class provides the basic implementation for <i>single</i> <b>cell</b> selection in a grid.
* The object stored as the selection contains the following properties:
* <div class="mdetail-params"><ul>
* <li><b>cell</b> : see {@link #getSelectedCell}
* <li><b>record</b> : Ext.data.record The {@link Ext.data.Record Record}
* which provides the data for the row containing the selection</li>
* </ul></div>
* @constructor
* @param {Object} config The object containing the configuration of this model.
*/
Ext.grid.CellSelectionModel = Ext.extend(Ext.grid.AbstractSelectionModel, {
constructor : function(config){
Ext.apply(this, config);
this.selection = null;
this.addEvents(
<div id="event-Ext.grid.CellSelectionModel-beforecellselect"></div>/**
* @event beforecellselect
* Fires before a cell is selected, return false to cancel the selection.
* @param {SelectionModel} this
* @param {Number} rowIndex The selected row index
* @param {Number} colIndex The selected cell index
*/
"beforecellselect",
<div id="event-Ext.grid.CellSelectionModel-cellselect"></div>/**
* @event cellselect
* Fires when a cell is selected.
* @param {SelectionModel} this
* @param {Number} rowIndex The selected row index
* @param {Number} colIndex The selected cell index
*/
"cellselect",
<div id="event-Ext.grid.CellSelectionModel-selectionchange"></div>/**
* @event selectionchange
* Fires when the active selection changes.
* @param {SelectionModel} this
* @param {Object} selection null for no selection or an object with two properties
* <div class="mdetail-params"><ul>
* <li><b>cell</b> : see {@link #getSelectedCell}
* <li><b>record</b> : Ext.data.record<p class="sub-desc">The {@link Ext.data.Record Record}
* which provides the data for the row containing the selection</p></li>
* </ul></div>
*/
"selectionchange"
);
Ext.grid.CellSelectionModel.superclass.constructor.call(this);
},
/** @ignore */
initEvents : function(){
this.grid.on('cellmousedown', this.handleMouseDown, this);
this.grid.on(Ext.EventManager.getKeyEvent(), this.handleKeyDown, this);
this.grid.getView().on({
scope: this,
refresh: this.onViewChange,
rowupdated: this.onRowUpdated,
beforerowremoved: this.clearSelections,
beforerowsinserted: this.clearSelections
});
if(this.grid.isEditor){
this.grid.on('beforeedit', this.beforeEdit, this);
}
},
//private
beforeEdit : function(e){
this.select(e.row, e.column, false, true, e.record);
},
//private
onRowUpdated : function(v, index, r){
if(this.selection && this.selection.record == r){
v.onCellSelect(index, this.selection.cell[1]);
}
},
//private
onViewChange : function(){
this.clearSelections(true);
},
<div id="method-Ext.grid.CellSelectionModel-getSelectedCell"></div>/**
* Returns an array containing the row and column indexes of the currently selected cell
* (e.g., [0, 0]), or null if none selected. The array has elements:
* <div class="mdetail-params"><ul>
* <li><b>rowIndex</b> : Number<p class="sub-desc">The index of the selected row</p></li>
* <li><b>cellIndex</b> : Number<p class="sub-desc">The index of the selected cell.
* Due to possible column reordering, the cellIndex should <b>not</b> be used as an
* index into the Record's data. Instead, use the cellIndex to determine the <i>name</i>
* of the selected cell and use the field name to retrieve the data value from the record:<pre><code>
// get name
var fieldName = grid.getColumnModel().getDataIndex(cellIndex);
// get data value based on name
var data = record.get(fieldName);
* </code></pre></p></li>
* </ul></div>
* @return {Array} An array containing the row and column indexes of the selected cell, or null if none selected.
*/
getSelectedCell : function(){
return this.selection ? this.selection.cell : null;
},
<div id="method-Ext.grid.CellSelectionModel-clearSelections"></div>/**
* If anything is selected, clears all selections and fires the selectionchange event.
* @param {Boolean} preventNotify <tt>true</tt> to prevent the gridview from
* being notified about the change.
*/
clearSelections : function(preventNotify){
var s = this.selection;
if(s){
if(preventNotify !== true){
this.grid.view.onCellDeselect(s.cell[0], s.cell[1]);
}
this.selection = null;
this.fireEvent("selectionchange", this, null);
}
},
<div id="method-Ext.grid.CellSelectionModel-hasSelection"></div>/**
* Returns <tt>true</tt> if there is a selection.
* @return {Boolean}
*/
hasSelection : function(){
return this.selection ? true : false;
},
/** @ignore */
handleMouseDown : function(g, row, cell, e){
if(e.button !== 0 || this.isLocked()){
return;
}
this.select(row, cell);
},
<div id="method-Ext.grid.CellSelectionModel-select"></div>/**
* Selects a cell. Before selecting a cell, fires the
* {@link #beforecellselect} event. If this check is satisfied the cell
* will be selected and followed up by firing the {@link #cellselect} and
* {@link #selectionchange} events.
* @param {Number} rowIndex The index of the row to select
* @param {Number} colIndex The index of the column to select
* @param {Boolean} preventViewNotify (optional) Specify <tt>true</tt> to
* prevent notifying the view (disables updating the selected appearance)
* @param {Boolean} preventFocus (optional) Whether to prevent the cell at
* the specified rowIndex / colIndex from being focused.
* @param {Ext.data.Record} r (optional) The record to select
*/
select : function(rowIndex, colIndex, preventViewNotify, preventFocus, /*internal*/ r){
if(this.fireEvent("beforecellselect", this, rowIndex, colIndex) !== false){
this.clearSelections();
r = r || this.grid.store.getAt(rowIndex);
this.selection = {
record : r,
cell : [rowIndex, colIndex]
};
if(!preventViewNotify){
var v = this.grid.getView();
v.onCellSelect(rowIndex, colIndex);
if(preventFocus !== true){
v.focusCell(rowIndex, colIndex);
}
}
this.fireEvent("cellselect", this, rowIndex, colIndex);
this.fireEvent("selectionchange", this, this.selection);
}
},
//private
isSelectable : function(rowIndex, colIndex, cm){
return !cm.isHidden(colIndex);
},
// private
onEditorKey: function(field, e){
if(e.getKey() == e.TAB){
this.handleKeyDown(e);
}
},
/** @ignore */
handleKeyDown : function(e){
if(!e.isNavKeyPress()){
return;
}
var k = e.getKey(),
g = this.grid,
s = this.selection,
sm = this,
walk = function(row, col, step){
return g.walkCells(
row,
col,
step,
g.isEditor && g.editing ? sm.acceptsNav : sm.isSelectable, // *** handle tabbing while editorgrid is in edit mode
sm
);
},
cell, newCell, r, c, ae;
switch(k){
case e.ESC:
case e.PAGE_UP:
case e.PAGE_DOWN:
// do nothing
break;
default:
// *** call e.stopEvent() only for non ESC, PAGE UP/DOWN KEYS
e.stopEvent();
break;
}
if(!s){
cell = walk(0, 0, 1); // *** use private walk() function defined above
if(cell){
this.select(cell[0], cell[1]);
}
return;
}
cell = s.cell; // currently selected cell
r = cell[0]; // current row
c = cell[1]; // current column
switch(k){
case e.TAB:
if(e.shiftKey){
newCell = walk(r, c - 1, -1);
}else{
newCell = walk(r, c + 1, 1);
}
break;
case e.DOWN:
newCell = walk(r + 1, c, 1);
break;
case e.UP:
newCell = walk(r - 1, c, -1);
break;
case e.RIGHT:
newCell = walk(r, c + 1, 1);
break;
case e.LEFT:
newCell = walk(r, c - 1, -1);
break;
case e.ENTER:
if (g.isEditor && !g.editing) {
g.startEditing(r, c);
return;
}
break;
}
if(newCell){
// *** reassign r & c variables to newly-selected cell's row and column
r = newCell[0];
c = newCell[1];
this.select(r, c); // *** highlight newly-selected cell and update selection
if(g.isEditor && g.editing){ // *** handle tabbing while editorgrid is in edit mode
ae = g.activeEditor;
if(ae && ae.field.triggerBlur){
// *** if activeEditor is a TriggerField, explicitly call its triggerBlur() method
ae.field.triggerBlur();
}
g.startEditing(r, c);
}
}
},
acceptsNav : function(row, col, cm){
return !cm.isHidden(col) && cm.isCellEditable(col, row);
}
});</pre>
</body>
</html>
|
