/**
- * @class Ext.selection.Model
- * @extends Ext.util.Observable
- *
- * Tracks what records are currently selected in a databound widget.
- *
- * This is an abstract class and is not meant to be directly used.
+
+
+
+
+ The source code
+
+
+
+
+
+
+
/**
+ * Tracks what records are currently selected in a databound component.
*
- * DataBound UI widgets such as GridPanel, TreePanel, and ListView
- * should subclass AbstractStoreSelectionModel and provide a way
- * to binding to the component.
+ * This is an abstract class and is not meant to be directly used. Databound UI widgets such as
+ * {@link Ext.grid.Panel Grid} and {@link Ext.tree.Panel Tree} should subclass Ext.selection.Model
+ * and provide a way to binding to the component.
*
- * The abstract methods onSelectChange and onLastFocusChanged should
- * be implemented in these subclasses to update the UI widget.
+ * The abstract methods `onSelectChange` and `onLastFocusChanged` should be implemented in these
+ * subclasses to update the UI widget.
*/
Ext.define('Ext.selection.Model', {
extend: 'Ext.util.Observable',
- alternateClassName: 'Ext.AbstractStoreSelectionModel',
+ alternateClassName: 'Ext.AbstractSelectionModel',
requires: ['Ext.data.StoreManager'],
// lastSelected
- /**
+ /**
* @cfg {String} mode
- * Modes of selection.
- * Valid values are SINGLE, SIMPLE, and MULTI. Defaults to 'SINGLE'
+ * Mode of selection. Valid values are:
+ *
+ * - **SINGLE** - Only allows selecting one item at a time. Use {@link #allowDeselect} to allow
+ * deselecting that item. This is the default.
+ * - **SIMPLE** - Allows simple selection of multiple items one-by-one. Each click in grid will either
+ * select or deselect an item.
+ * - **MULTI** - Allows complex selection of multiple items using Ctrl and Shift keys.
*/
-
- /**
+
+ /**
* @cfg {Boolean} allowDeselect
- * Allow users to deselect a record in a DataView, List or Grid. Only applicable when the SelectionModel's mode is 'SINGLE'. Defaults to false.
+ * Allow users to deselect a record in a DataView, List or Grid.
+ * Only applicable when the {@link #mode} is 'SINGLE'.
*/
allowDeselect: false,
- /**
- * @property selected
- * READ-ONLY A MixedCollection that maintains all of the currently selected
- * records.
+ /**
+ * @property {Ext.util.MixedCollection} selected
+ * A MixedCollection that maintains all of the currently selected records. Read-only.
*/
selected: null,
-
-
- /**
+
+ /**
* Prune records when they are removed from the store from the selection.
* This is a private flag. For an example of its usage, take a look at
* Ext.selection.TreeModel.
@@ -49,18 +65,18 @@ Ext.define('Ext.selection.Model', {
constructor: function(cfg) {
var me = this;
-
+
cfg = cfg || {};
Ext.apply(me, cfg);
-
+
me.addEvents(
- /**
- * @event selectionchange
+ /**
+ * @event
* Fired after a selection change has occurred
* @param {Ext.selection.Model} this
- * @param {Array} selected The selected records
+ * @param {Ext.data.Model[]} selected The selected records
*/
- 'selectionchange'
+ 'selectionchange'
);
me.modes = {
@@ -74,17 +90,17 @@ Ext.define('Ext.selection.Model', {
// maintains the currently selected records.
me.selected = Ext.create('Ext.util.MixedCollection');
-
+
me.callParent(arguments);
},
// binds the store to the selModel.
bind : function(store, initial){
var me = this;
-
+
if(!initial && me.store){
if(store !== me.store && me.store.autoDestroy){
- me.store.destroy();
+ me.store.destroyStore();
}else{
me.store.un("add", me.onStoreAdd, me);
me.store.un("clear", me.onStoreClear, me);
@@ -108,32 +124,52 @@ Ext.define('Ext.selection.Model', {
}
},
- selectAll: function(silent) {
- var selections = this.store.getRange(),
+ /**
+ * Selects all records in the view.
+ * @param {Boolean} suppressEvent True to suppress any select events
+ */
+ selectAll: function(suppressEvent) {
+ var me = this,
+ selections = me.store.getRange(),
i = 0,
- len = selections.length;
-
+ len = selections.length,
+ start = me.getSelection().length;
+
+ me.bulkChange = true;
for (; i < len; i++) {
- this.doSelect(selections[i], true, silent);
+ me.doSelect(selections[i], true, suppressEvent);
}
+ delete me.bulkChange;
+ // fire selection change only if the number of selections differs
+ me.maybeFireSelectionChange(me.getSelection().length !== start);
},
- deselectAll: function() {
- var selections = this.getSelection(),
+ /**
+ * Deselects all records in the view.
+ * @param {Boolean} suppressEvent True to suppress any deselect events
+ */
+ deselectAll: function(suppressEvent) {
+ var me = this,
+ selections = me.getSelection(),
i = 0,
- len = selections.length;
-
+ len = selections.length,
+ start = me.getSelection().length;
+
+ me.bulkChange = true;
for (; i < len; i++) {
- this.doDeselect(selections[i]);
+ me.doDeselect(selections[i], suppressEvent);
}
+ delete me.bulkChange;
+ // fire selection change only if the number of selections differs
+ me.maybeFireSelectionChange(me.getSelection().length !== start);
},
// Provides differentiation of logic between MULTI, SIMPLE and SINGLE
// selection modes. Requires that an event be passed so that we can know
// if user held ctrl or shift.
- selectWithEvent: function(record, e) {
+ selectWithEvent: function(record, e, keepExisting) {
var me = this;
-
+
switch (me.selectionMode) {
case 'MULTI':
if (e.ctrlKey && me.isSelected(record)) {
@@ -143,7 +179,7 @@ Ext.define('Ext.selection.Model', {
} else if (e.ctrlKey) {
me.doSelect(record, true, false);
} else if (me.isSelected(record) && !e.shiftKey && !e.ctrlKey && me.selected.getCount() > 1) {
- me.doSelect(record, false, false);
+ me.doSelect(record, keepExisting, false);
} else {
me.doSelect(record, false);
}
@@ -167,12 +203,12 @@ Ext.define('Ext.selection.Model', {
}
},
- /**
+ /**
* Selects a range of rows if the selection model {@link #isLocked is not locked}.
* All rows in between startRow and endRow are also selected.
* @param {Ext.data.Model/Number} startRow The record or index of the first row in the range
* @param {Ext.data.Model/Number} endRow The record or index of the last row in the range
- * @param {Boolean} keepExisting (optional) True to retain existing selections
+ * @param {Boolean} [keepExisting] True to retain existing selections
*/
selectRange : function(startRow, endRow, keepExisting, dir){
var me = this,
@@ -182,22 +218,22 @@ Ext.define('Ext.selection.Model', {
tmp,
dontDeselect,
records = [];
-
+
if (me.isLocked()){
return;
}
-
+
if (!keepExisting) {
- me.clearSelections();
+ me.deselectAll(true);
}
-
+
if (!Ext.isNumber(startRow)) {
startRow = store.indexOf(startRow);
- }
+ }
if (!Ext.isNumber(endRow)) {
endRow = store.indexOf(endRow);
}
-
+
// swap values
if (startRow > endRow){
tmp = endRow;
@@ -216,7 +252,7 @@ Ext.define('Ext.selection.Model', {
} else {
dontDeselect = (dir == 'up') ? startRow : endRow;
}
-
+
for (i = startRow; i <= endRow; i++){
if (selectedCount == (endRow - startRow + 1)) {
if (i != dontDeselect) {
@@ -228,30 +264,33 @@ Ext.define('Ext.selection.Model', {
}
me.doMultiSelect(records, true);
},
-
- /**
+
+ /**
* Selects a record instance by record instance or index.
- * @param {Ext.data.Model/Index} records An array of records or an index
- * @param {Boolean} keepExisting
- * @param {Boolean} suppressEvent Set to false to not fire a select event
+ * @param {Ext.data.Model[]/Number} records An array of records or an index
+ * @param {Boolean} [keepExisting] True to retain existing selections
+ * @param {Boolean} [suppressEvent] Set to true to not fire a select event
*/
select: function(records, keepExisting, suppressEvent) {
- this.doSelect(records, keepExisting, suppressEvent);
+ // Automatically selecting eg store.first() or store.last() will pass undefined, so that must just return;
+ if (Ext.isDefined(records)) {
+ this.doSelect(records, keepExisting, suppressEvent);
+ }
},
- /**
+ /**
* Deselects a record instance by record instance or index.
- * @param {Ext.data.Model/Index} records An array of records or an index
- * @param {Boolean} suppressEvent Set to false to not fire a deselect event
+ * @param {Ext.data.Model[]/Number} records An array of records or an index
+ * @param {Boolean} [suppressEvent] Set to true to not fire a deselect event
*/
deselect: function(records, suppressEvent) {
this.doDeselect(records, suppressEvent);
},
-
+
doSelect: function(records, keepExisting, suppressEvent) {
var me = this,
record;
-
+
if (me.locked) {
return;
}
@@ -272,17 +311,24 @@ Ext.define('Ext.selection.Model', {
change = false,
i = 0,
len, record;
-
+
if (me.locked) {
return;
}
-
+
records = !Ext.isArray(records) ? [records] : records;
len = records.length;
if (!keepExisting && selected.getCount() > 0) {
+ if (me.doDeselect(me.getSelection(), suppressEvent) === false) {
+ return;
+ }
+ // TODO - coalesce the selectionchange event in deselect w/the one below...
+ }
+
+ function commit () {
+ selected.add(record);
change = true;
- me.doDeselect(me.getSelection(), true);
}
for (; i < len; i++) {
@@ -290,11 +336,9 @@ Ext.define('Ext.selection.Model', {
if (keepExisting && me.isSelected(record)) {
continue;
}
- change = true;
me.lastSelected = record;
- selected.add(record);
- me.onSelectChange(record, true, suppressEvent);
+ me.onSelectChange(record, true, suppressEvent, commit);
}
me.setLastFocused(record, suppressEvent);
// fire selchange if there was a change and there is no suppressEvent flag
@@ -305,38 +349,49 @@ Ext.define('Ext.selection.Model', {
doDeselect: function(records, suppressEvent) {
var me = this,
selected = me.selected,
- change = false,
i = 0,
- len, record;
-
+ len, record,
+ attempted = 0,
+ accepted = 0;
+
if (me.locked) {
- return;
+ return false;
}
if (typeof records === "number") {
records = [me.store.getAt(records)];
+ } else if (!Ext.isArray(records)) {
+ records = [records];
+ }
+
+ function commit () {
+ ++accepted;
+ selected.remove(record);
}
- records = !Ext.isArray(records) ? [records] : records;
len = records.length;
+
for (; i < len; i++) {
record = records[i];
- if (selected.remove(record)) {
+ if (me.isSelected(record)) {
if (me.lastSelected == record) {
me.lastSelected = selected.last();
}
- me.onSelectChange(record, false, suppressEvent);
- change = true;
+ ++attempted;
+ me.onSelectChange(record, false, suppressEvent, commit);
}
}
+
// fire selchange if there was a change and there is no suppressEvent flag
- me.maybeFireSelectionChange(change && !suppressEvent);
+ me.maybeFireSelectionChange(accepted > 0 && !suppressEvent);
+ return accepted === attempted;
},
doSingleSelect: function(record, suppressEvent) {
var me = this,
+ changed = false,
selected = me.selected;
-
+
if (me.locked) {
return;
}
@@ -345,22 +400,34 @@ Ext.define('Ext.selection.Model', {
if (me.isSelected(record)) {
return;
}
- if (selected.getCount() > 0) {
- me.doDeselect(me.lastSelected, suppressEvent);
+
+ function commit () {
+ me.bulkChange = true;
+ if (selected.getCount() > 0 && me.doDeselect(me.lastSelected, suppressEvent) === false) {
+ delete me.bulkChange;
+ return false;
+ }
+ delete me.bulkChange;
+
+ selected.add(record);
+ me.lastSelected = record;
+ changed = true;
}
- selected.add(record);
- me.lastSelected = record;
- me.onSelectChange(record, true, suppressEvent);
- if (!suppressEvent) {
- me.setLastFocused(record);
+
+ me.onSelectChange(record, true, suppressEvent, commit);
+
+ if (changed) {
+ if (!suppressEvent) {
+ me.setLastFocused(record);
+ }
+ me.maybeFireSelectionChange(!suppressEvent);
}
- me.maybeFireSelectionChange(!suppressEvent);
},
- /**
- * @param {Ext.data.Model} record
- * Set a record as the last focused record. This does NOT mean
+ /**
+ * Sets a record as the last focused record. This does NOT mean
* that the record has been selected.
+ * @param {Ext.data.Model} record
*/
setLastFocused: function(record, supressFocus) {
var me = this,
@@ -368,10 +435,10 @@ Ext.define('Ext.selection.Model', {
me.lastFocused = record;
me.onLastFocusChanged(recordBeforeLast, record, supressFocus);
},
-
- /**
+
+ /**
* Determines if this record is currently focused.
- * @param Ext.data.Record record
+ * @param {Ext.data.Model} record
*/
isFocused: function(record) {
return record === this.getLastFocused();
@@ -381,39 +448,42 @@ Ext.define('Ext.selection.Model', {
// fire selection change as long as true is not passed
// into maybeFireSelectionChange
maybeFireSelectionChange: function(fireEvent) {
- if (fireEvent) {
- var me = this;
+ var me = this;
+ if (fireEvent && !me.bulkChange) {
me.fireEvent('selectionchange', me, me.getSelection());
}
},
- /**
+ /**
* Returns the last selected record.
*/
getLastSelected: function() {
return this.lastSelected;
},
-
+
getLastFocused: function() {
return this.lastFocused;
},
- /**
+ /**
* Returns an array of the currently selected records.
+ * @return {Ext.data.Model[]} The selected records
*/
getSelection: function() {
return this.selected.getRange();
},
- /**
- * Returns the current selectionMode. SINGLE, MULTI or SIMPLE.
+ /**
+ * Returns the current selectionMode.
+ * @return {String} The selectionMode: 'SINGLE', 'MULTI' or 'SIMPLE'.
*/
getSelectionMode: function() {
return this.selectionMode;
},
- /**
- * Sets the current selectionMode. SINGLE, MULTI or SIMPLE.
+ /**
+ * Sets the current selectionMode.
+ * @param {String} selModel 'SINGLE', 'MULTI' or 'SIMPLE'.
*/
setSelectionMode: function(selMode) {
selMode = selMode ? selMode.toUpperCase() : 'SINGLE';
@@ -422,7 +492,7 @@ Ext.define('Ext.selection.Model', {
this.selectionMode = this.modes[selMode] ? selMode : 'SINGLE';
},
- /**
+ /**
* Returns true if the selections are locked.
* @return {Boolean}
*/
@@ -430,27 +500,26 @@ Ext.define('Ext.selection.Model', {
return this.locked;
},
- /**
- * Locks the current selection and disables any changes from
- * happening to the selection.
- * @param {Boolean} locked
+ /**
+ * Locks the current selection and disables any changes from happening to the selection.
+ * @param {Boolean} locked True to lock, false to unlock.
*/
setLocked: function(locked) {
this.locked = !!locked;
},
- /**
- * Returns <tt>true</tt> if the specified row is selected.
- * @param {Record/Number} record The record or index of the record to check
+ /**
+ * Returns true if the specified row is selected.
+ * @param {Ext.data.Model/Number} record The record or index of the record to check
* @return {Boolean}
*/
isSelected: function(record) {
record = Ext.isNumber(record) ? this.store.getAt(record) : record;
return this.selected.indexOf(record) !== -1;
},
-
- /**
- * Returns true if there is a selected record.
+
+ /**
+ * Returns true if there are any a selected records.
* @return {Boolean}
*/
hasSelection: function() {
@@ -484,7 +553,7 @@ Ext.define('Ext.selection.Model', {
}
me.clearSelections();
-
+
if (me.store.indexOf(lastFocused) !== -1) {
// restore the last focus but supress restoring focus
this.setLastFocused(lastFocused, true);
@@ -494,16 +563,20 @@ Ext.define('Ext.selection.Model', {
// perform the selection again
me.doSelect(toBeSelected, false, true);
}
-
+
me.maybeFireSelectionChange(change);
},
+ /**
+ * A fast reset of the selections without firing events, updating the ui, etc.
+ * For private usage only.
+ * @private
+ */
clearSelections: function() {
// reset the entire selection to nothing
- var me = this;
- me.selected.clear();
- me.lastSelected = null;
- me.setLastFocused(null);
+ this.selected.clear();
+ this.lastSelected = null;
+ this.setLastFocused(null);
},
// when a record is added to a store
@@ -514,14 +587,9 @@ Ext.define('Ext.selection.Model', {
// when a store is cleared remove all selections
// (if there were any)
onStoreClear: function() {
- var me = this,
- selected = this.selected;
-
- if (selected.getCount > 0) {
- selected.clear();
- me.lastSelected = null;
- me.setLastFocused(null);
- me.maybeFireSelectionChange(true);
+ if (this.selected.getCount > 0) {
+ this.clearSelections();
+ this.maybeFireSelectionChange(true);
}
},
@@ -531,7 +599,7 @@ Ext.define('Ext.selection.Model', {
onStoreRemove: function(store, record) {
var me = this,
selected = me.selected;
-
+
if (me.locked || !me.pruneRemoved) {
return;
}
@@ -547,6 +615,10 @@ Ext.define('Ext.selection.Model', {
}
},
+ /**
+ * Returns the count of selected records.
+ * @return {Number} The number of selected records
+ */
getCount: function() {
return this.selected.getCount();
},
@@ -580,4 +652,6 @@ Ext.define('Ext.selection.Model', {
bindComponent: function(cmp) {
}
-});