/**
* @class Ext.grid.RowSelectionModel
* @extends Ext.grid.AbstractSelectionModel
* The default SelectionModel used by {@link Ext.grid.GridPanel}.
* It supports multiple selections and keyboard selection/navigation. The objects stored
* as selections and returned by {@link #getSelected}, and {@link #getSelections} are
* the {@link Ext.data.Record Record}s which provide the data for the selected rows.
* @constructor
* @param {Object} config
*/
Ext.grid.RowSelectionModel = Ext.extend(Ext.grid.AbstractSelectionModel, {
/**
* @cfg {Boolean} singleSelect
* <tt>true</tt> to allow selection of only one row at a time (defaults to <tt>false</tt>
* allowing multiple selections)
*/
singleSelect : false,
constructor : function(config){
Ext.apply(this, config);
this.selections = new Ext.util.MixedCollection(false, function(o){
return o.id;
});
this.last = false;
this.lastActive = false;
this.addEvents(
/**
* @event selectionchange
* Fires when the selection changes
* @param {SelectionModel} this
*/
'selectionchange',
/**
* @event beforerowselect
* Fires before a row is selected, return false to cancel the selection.
* @param {SelectionModel} this
* @param {Number} rowIndex The index to be selected
* @param {Boolean} keepExisting False if other selections will be cleared
* @param {Record} record The record to be selected
*/
'beforerowselect',
/**
* @event rowselect
* Fires when a row is selected.
* @param {SelectionModel} this
* @param {Number} rowIndex The selected index
* @param {Ext.data.Record} r The selected record
*/
'rowselect',
/**
* @event rowdeselect
* Fires when a row is deselected. To prevent deselection
* {@link Ext.grid.AbstractSelectionModel#lock lock the selections}.
* @param {SelectionModel} this
* @param {Number} rowIndex
* @param {Record} record
*/
'rowdeselect'
);
Ext.grid.RowSelectionModel.superclass.constructor.call(this);
},
/**
* @cfg {Boolean} moveEditorOnEnter
* <tt>false</tt> to turn off moving the editor to the next row down when the enter key is pressed
* or the next row up when shift + enter keys are pressed.
*/
// private
initEvents : function(){
if(!this.grid.enableDragDrop && !this.grid.enableDrag){
this.grid.on('rowmousedown', this.handleMouseDown, this);
}
this.rowNav = new Ext.KeyNav(this.grid.getGridEl(), {
up: this.onKeyPress,
down: this.onKeyPress,
scope: this
});
this.grid.getView().on({
scope: this,
refresh: this.onRefresh,
rowupdated: this.onRowUpdated,
rowremoved: this.onRemove
});
},
onKeyPress : function(e, name){
var up = name == 'up',
method = up ? 'selectPrevious' : 'selectNext',
add = up ? -1 : 1,
last;
if(!e.shiftKey || this.singleSelect){
this[method](false);
}else if(this.last !== false && this.lastActive !== false){
last = this.last;
this.selectRange(this.last, this.lastActive + add);
this.grid.getView().focusRow(this.lastActive);
if(last !== false){
this.last = last;
}
}else{
this.selectFirstRow();
}
},
// private
onRefresh : function(){
var ds = this.grid.store,
s = this.getSelections(),
i = 0,
len = s.length,
index, r;
this.silent = true;
this.clearSelections(true);
for(; i < len; i++){
r = s[i];
if((index = ds.indexOfId(r.id)) != -1){
this.selectRow(index, true);
}
}
if(s.length != this.selections.getCount()){
this.fireEvent('selectionchange', this);
}
this.silent = false;
},
// private
onRemove : function(v, index, r){
if(this.selections.remove(r) !== false){
this.fireEvent('selectionchange', this);
}
},
// private
onRowUpdated : function(v, index, r){
if(this.isSelected(r)){
v.onRowSelect(index);
}
},
/**
* Select records.
* @param {Array} records The records to select
* @param {Boolean} keepExisting (optional) <tt>true</tt> to keep existing selections
*/
selectRecords : function(records, keepExisting){
if(!keepExisting){
this.clearSelections();
}
var ds = this.grid.store,
i = 0,
len = records.length;
for(; i < len; i++){
this.selectRow(ds.indexOf(records[i]), true);
}
},
/**
* Gets the number of selected rows.
* @return {Number}
*/
getCount : function(){
return this.selections.length;
},
/**
* Selects the first row in the grid.
*/
selectFirstRow : function(){
this.selectRow(0);
},
/**
* Select the last row.
* @param {Boolean} keepExisting (optional) <tt>true</tt> to keep existing selections
*/
selectLastRow : function(keepExisting){
this.selectRow(this.grid.store.getCount() - 1, keepExisting);
},
/**
* Selects the row immediately following the last selected row.
* @param {Boolean} keepExisting (optional) <tt>true</tt> to keep existing selections
* @return {Boolean} <tt>true</tt> if there is a next row, else <tt>false</tt>
*/
selectNext : function(keepExisting){
if(this.hasNext()){
this.selectRow(this.last+1, keepExisting);
this.grid.getView().focusRow(this.last);
return true;
}
return false;
},
/**
* Selects the row that precedes the last selected row.
* @param {Boolean} keepExisting (optional) <tt>true</tt> to keep existing selections
* @return {Boolean} <tt>true</tt> if there is a previous row, else <tt>false</tt>
*/
selectPrevious : function(keepExisting){
if(this.hasPrevious()){
this.selectRow(this.last-1, keepExisting);
this.grid.getView().focusRow(this.last);
return true;
}
return false;
},
/**
* Returns true if there is a next record to select
* @return {Boolean}
*/
hasNext : function(){
return this.last !== false && (this.last+1) < this.grid.store.getCount();
},
/**
* Returns true if there is a previous record to select
* @return {Boolean}
*/
hasPrevious : function(){
return !!this.last;
},
/**
* Returns the selected records
* @return {Array} Array of selected records
*/
getSelections : function(){
return [].concat(this.selections.items);
},
/**
* Returns the first selected record.
* @return {Record}
*/
getSelected : function(){
return this.selections.itemAt(0);
},
/**
* Calls the passed function with each selection. If the function returns
* <tt>false</tt>, iteration is stopped and this function returns
* <tt>false</tt>. Otherwise it returns <tt>true</tt>.
* @param {Function} fn The function to call upon each iteration. It is passed the selected {@link Ext.data.Record Record}.
* @param {Object} scope (optional) The scope (<code>this</code> reference) in which the function is executed. Defaults to this RowSelectionModel.
* @return {Boolean} true if all selections were iterated
*/
each : function(fn, scope){
var s = this.getSelections(),
i = 0,
len = s.length;
for(; i < len; i++){
if(fn.call(scope || this, s[i], i) === false){
return false;
}
}
return true;
},
/**
* Clears all selections if the selection model
* {@link Ext.grid.AbstractSelectionModel#isLocked is not locked}.
* @param {Boolean} fast (optional) <tt>true</tt> to bypass the
* conditional checks and events described in {@link #deselectRow}.
*/
clearSelections : function(fast){
if(this.isLocked()){
return;
}
if(fast !== true){
var ds = this.grid.store,
s = this.selections;
s.each(function(r){
this.deselectRow(ds.indexOfId(r.id));
}, this);
s.clear();
}else{
this.selections.clear();
}
this.last = false;
},
/**
* Selects all rows if the selection model
* {@link Ext.grid.AbstractSelectionModel#isLocked is not locked}.
*/
selectAll : function(){
if(this.isLocked()){
return;
}
this.selections.clear();
for(var i = 0, len = this.grid.store.getCount(); i < len; i++){
this.selectRow(i, true);
}
},
/**
* Returns <tt>true</tt> if there is a selection.
* @return {Boolean}
*/
hasSelection : function(){
return this.selections.length > 0;
},
/**
* Returns <tt>true</tt> if the specified row is selected.
* @param {Number/Record} index The record or index of the record to check
* @return {Boolean}
*/
isSelected : function(index){
var r = Ext.isNumber(index) ? this.grid.store.getAt(index) : index;
return (r && this.selections.key(r.id) ? true : false);
},
/**
* Returns <tt>true</tt> if the specified record id is selected.
* @param {String} id The id of record to check
* @return {Boolean}
*/
isIdSelected : function(id){
return (this.selections.key(id) ? true : false);
},
// private
handleMouseDown : function(g, rowIndex, e){
if(e.button !== 0 || this.isLocked()){
return;
}
var view = this.grid.getView();
if(e.shiftKey && !this.singleSelect && this.last !== false){
var last = this.last;
this.selectRange(last, rowIndex, e.ctrlKey);
this.last = last; // reset the last
view.focusRow(rowIndex);
}else{
var isSelected = this.isSelected(rowIndex);
if(e.ctrlKey && isSelected){
this.deselectRow(rowIndex);
}else if(!isSelected || this.getCount() > 1){
this.selectRow(rowIndex, e.ctrlKey || e.shiftKey);
view.focusRow(rowIndex);
}
}
},
/**
* Selects multiple rows.
* @param {Array} rows Array of the indexes of the row to select
* @param {Boolean} keepExisting (optional) <tt>true</tt> to keep
* existing selections (defaults to <tt>false</tt>)
*/
selectRows : function(rows, keepExisting){
if(!keepExisting){
this.clearSelections();
}
for(var i = 0, len = rows.length; i < len; i++){
this.selectRow(rows[i], true);
}
},
/**
* Selects a range of rows if the selection model
* {@link Ext.grid.AbstractSelectionModel#isLocked is not locked}.
* All rows in between startRow and endRow are also selected.
* @param {Number} startRow The index of the first row in the range
* @param {Number} endRow The index of the last row in the range
* @param {Boolean} keepExisting (optional) True to retain existing selections
*/
selectRange : function(startRow, endRow, keepExisting){
var i;
if(this.isLocked()){
return;
}
if(!keepExisting){
this.clearSelections();
}
if(startRow <= endRow){
for(i = startRow; i <= endRow; i++){
this.selectRow(i, true);
}
}else{
for(i = startRow; i >= endRow; i--){
this.selectRow(i, true);
}
}
},
/**
* Deselects a range of rows if the selection model
* {@link Ext.grid.AbstractSelectionModel#isLocked is not locked}.
* All rows in between startRow and endRow are also deselected.
* @param {Number} startRow The index of the first row in the range
* @param {Number} endRow The index of the last row in the range
*/
deselectRange : function(startRow, endRow, preventViewNotify){
if(this.isLocked()){
return;
}
for(var i = startRow; i <= endRow; i++){
this.deselectRow(i, preventViewNotify);
}
},
/**
* Selects a row. Before selecting a row, checks if the selection model
* {@link Ext.grid.AbstractSelectionModel#isLocked is locked} and fires the
* {@link #beforerowselect} event. If these checks are satisfied the row
* will be selected and followed up by firing the {@link #rowselect} and
* {@link #selectionchange} events.
* @param {Number} row The index of the row to select
* @param {Boolean} keepExisting (optional) <tt>true</tt> to keep existing selections
* @param {Boolean} preventViewNotify (optional) Specify <tt>true</tt> to
* prevent notifying the view (disables updating the selected appearance)
*/
selectRow : function(index, keepExisting, preventViewNotify){
if(this.isLocked() || (index < 0 || index >= this.grid.store.getCount()) || (keepExisting && this.isSelected(index))){
return;
}
var r = this.grid.store.getAt(index);
if(r && this.fireEvent('beforerowselect', this, index, keepExisting, r) !== false){
if(!keepExisting || this.singleSelect){
this.clearSelections();
}
this.selections.add(r);
this.last = this.lastActive = index;
if(!preventViewNotify){
this.grid.getView().onRowSelect(index);
}
if(!this.silent){
this.fireEvent('rowselect', this, index, r);
this.fireEvent('selectionchange', this);
}
}
},
/**
* Deselects a row. Before deselecting a row, checks if the selection model
* {@link Ext.grid.AbstractSelectionModel#isLocked is locked}.
* If this check is satisfied the row will be deselected and followed up by
* firing the {@link #rowdeselect} and {@link #selectionchange} events.
* @param {Number} row The index of the row to deselect
* @param {Boolean} preventViewNotify (optional) Specify <tt>true</tt> to
* prevent notifying the view (disables updating the selected appearance)
*/
deselectRow : function(index, preventViewNotify){
if(this.isLocked()){
return;
}
if(this.last == index){
this.last = false;
}
if(this.lastActive == index){
this.lastActive = false;
}
var r = this.grid.store.getAt(index);
if(r){
this.selections.remove(r);
if(!preventViewNotify){
this.grid.getView().onRowDeselect(index);
}
this.fireEvent('rowdeselect', this, index, r);
this.fireEvent('selectionchange', this);
}
},
// private
acceptsNav : function(row, col, cm){
return !cm.isHidden(col) && cm.isCellEditable(col, row);
},
// private
onEditorKey : function(field, e){
var k = e.getKey(),
newCell,
g = this.grid,
last = g.lastEdit,
ed = g.activeEditor,
shift = e.shiftKey,
ae, last, r, c;
if(k == e.TAB){
e.stopEvent();
ed.completeEdit();
if(shift){
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);
}
}else if(k == e.ENTER){
if(this.moveEditorOnEnter !== false){
if(shift){
newCell = g.walkCells(last.row - 1, last.col, -1, this.acceptsNav, this);
}else{
newCell = g.walkCells(last.row + 1, last.col, 1, this.acceptsNav, this);
}
}
}
if(newCell){
r = newCell[0];
c = newCell[1];
this.onEditorSelect(r, last.row);
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);
}
},
onEditorSelect: function(row, lastRow){
if(lastRow != row){
this.selectRow(row); // *** highlight newly-selected cell and update selection
}
},
destroy : function(){
Ext.destroy(this.rowNav);
this.rowNav = null;
Ext.grid.RowSelectionModel.superclass.destroy.call(this);
}
});