CellSelectionModel.js
/**
@class Ext.grid.CellSelectionModel
* @extends Ext.util.Observable
@constructor
* @param {Object} config
*/
Ext.grid.CellSelectionModel = function(config){
Ext.apply(this, config);
this.selection = null;
this.events = {
/**
* @event beforerowselect
* Fires before a cell is selected.
* @param {SelectionModel} this
* @param {Number} rowIndex The selected row index
* @param {Number} colIndex The selected cell index
*/
'beforecellselect' : true,
/**
* @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' : true,
/**
* @event selectionchange
* Fires when the active selection changes.
* @param {SelectionModel} this
* @param {Object} selection null for no selection or an object (o) with two properties
<ul>
<li>o.record: the record object for the row the selection is in</li>
<li>o.cell: An array of [rowIndex, columnIndex]</li>
</ul>
*/
'selectionchange' : true
};
this.textBuffer = [];
};
Ext.extend(Ext.grid.CellSelectionModel, Ext.grid.AbstractSelectionModel, {
/** @ignore */
initEvents : function(){
this.grid.on("mousedown", this.handleMouseDown, this);
this.grid.container.on(Ext.isIE ? 'keydown' : 'keypress', this.handleKeyDown, this);
var view = this.grid.view;
view.on('refresh', this.onViewChange, this);
view.on('rowupdated', this.onRowUpdated, this);
view.on('beforerowsremoved', this.onViewChange, this);
view.on('beforerowsinserted', this.onViewChange, this);
if(this.grid.isEditor){
this.grid.on('beforeedit', this.beforeEdit, this);
}
},
beforeEdit : function(grid, record, field, row, col){
this.select(row, col, false, true, record);
},
onViewChange : function(){
this.clearSelections(true);
},
getSelectedCell : function(){
return this.selection ? this.selection.cell : null;
},
/**
* Clears all selections.
*/
clearSelections : function(preventNotify){
this.clearBuffer();
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);
}
},
/**
* Returns True if there is a selection.
* @return {Boolean}
*/
hasSelection : function(){
return this.selection ? true : false;
},
/** @ignore */
handleMouseDown : function(e, t){
var v = this.grid.getView();
if(this.isLocked()){
return;
};
var row = v.findRowIndex(t);
var cell = v.findCellIndex(t);
if(row !== false && cell !== false){
this.select(row, cell);
}
},
/**
* Selects a cell.
* @param {Number} rowIndex
* @param {Number} collIndex
*/
select : function(rowIndex, colIndex, preventViewNotify, preventFocus, /*internal*/ r){
if(this.fireEvent('beforecellselect', this, rowIndex, colIndex) !== false){
this.clearSelections();
r = r || this.grid.dataSource.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);
}
},
isSelectable : function(rowIndex, colIndex, cm){
return !cm.isHidden(colIndex);
},
onRowUpdated : function(v, index, r){
if(this.selection && this.selection.record == r){
v.onCellSelect(index, this.selection.cell[1]);
}
},
/** @ignore */
handleKeyDown : function(e){
var g = this.grid, s = this.selection;
if(e.isNavKeyPress() && !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;
default:
if(g.isEditor && !e.isNavKeyPress()){
var ch = String.fromCharCode(e.getCharCode());
if(ch){
this.textBuffer.push(ch);
if(!g.editing){
g.startEditing(r, c, this.textBuffer);
}
}
return;
}
};
this.clearBuffer();
if(newCell){
this.select(newCell[0], newCell[1]);
e.stopEvent();
}
},
clearBuffer : function(){
this.textBuffer = [];
},
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 && !e.ctrlKey){
ed.completeEdit();
e.stopEvent();
}else if(k == e.ESC){
ed.cancelEdit();
}
if(newCell){
g.startEditing(newCell[0], newCell[1]);
}
}
});
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