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- <pre class="prettyprint lang-js"><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 = 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);
-};
-
-Ext.extend(Ext.grid.CellSelectionModel, Ext.grid.AbstractSelectionModel, {
-
- /** @ignore */
- initEvents : function(){
- this.grid.on("cellmousedown", this.handleMouseDown, this);
- this.grid.getGridEl().on(Ext.EventManager.useKeydown ? "keydown" : "keypress", this.handleKeyDown, this);
- var view = this.grid.view;
- view.on("refresh", this.onViewChange, this);
- view.on("rowupdated", this.onRowUpdated, this);
- view.on("beforerowremoved", this.clearSelections, this);
- view.on("beforerowsinserted", this.clearSelections, this);
- 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);
- },
-
- /** @ignore */
- handleKeyDown : function(e){
- if(!e.isNavKeyPress()){
- return;
- }
- var g = this.grid, s = this.selection;
- if(!s){
- e.stopEvent();
- var cell = g.walkCells(0, 0, 1, this.isSelectable, this);
- if(cell){
- this.select(cell[0], cell[1]);
- }
- return;
- }
- var sm = this;
- var walk = function(row, col, step){
- return g.walkCells(row, col, step, sm.isSelectable, sm);
- };
- var k = e.getKey(), r = s.cell[0], c = s.cell[1];
- var newCell;
-
- 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);
- e.stopEvent();
- return;
- }
- break;
- }
- if(newCell){
- this.select(newCell[0], newCell[1]);
- e.stopEvent();
- }
- },
-
- acceptsNav : function(row, col, cm){
- return !cm.isHidden(col) && cm.isCellEditable(col, row);
- },
-
- onEditorKey : function(field, e){
- var k = e.getKey(), newCell, g = this.grid, ed = g.activeEditor;
- if(k == e.TAB){
- if(e.shiftKey){
- newCell = g.walkCells(ed.row, ed.col-1, -1, this.acceptsNav, this);
- }else{
- newCell = g.walkCells(ed.row, ed.col+1, 1, this.acceptsNav, this);
- }
- e.stopEvent();
- }else if(k == e.ENTER){
- ed.completeEdit();
- e.stopEvent();
- }else if(k == e.ESC){
- e.stopEvent();
- ed.cancelEdit();
- }
- if(newCell){
- g.startEditing(newCell[0], newCell[1]);
- }
- }
-});</pre> \r
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