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/**
* A control that allows selection of multiple items in a list.
*/
Ext.define('Ext.ux.form.MultiSelect', {
extend: 'Ext.form.FieldContainer',
mixins: {
bindable: 'Ext.util.Bindable',
field: 'Ext.form.field.Field'
},
alternateClassName: 'Ext.ux.Multiselect',
alias: ['widget.multiselectfield', 'widget.multiselect'],
requires: ['Ext.panel.Panel', 'Ext.view.BoundList', 'Ext.layout.container.Fit'],
uses: ['Ext.view.DragZone', 'Ext.view.DropZone'],
layout: 'anchor',
/**
* @cfg {String} [dragGroup=""] The ddgroup name for the MultiSelect DragZone.
*/
/**
* @cfg {String} [dropGroup=""] The ddgroup name for the MultiSelect DropZone.
*/
/**
* @cfg {String} [title=""] A title for the underlying panel.
*/
/**
* @cfg {Boolean} [ddReorder=false] Whether the items in the MultiSelect list are drag/drop reorderable.
*/
ddReorder: false,
/**
* @cfg {Object/Array} tbar An optional toolbar to be inserted at the top of the control's selection list.
* This can be a {@link Ext.toolbar.Toolbar} object, a toolbar config, or an array of buttons/button configs
* to be added to the toolbar. See {@link Ext.panel.Panel#tbar}.
*/
/**
* @cfg {String} [appendOnly=false] `true` if the list should only allow append drops when drag/drop is enabled.
* This is useful for lists which are sorted.
*/
appendOnly: false,
/**
* @cfg {String} [displayField="text"] Name of the desired display field in the dataset.
*/
displayField: 'text',
/**
* @cfg {String} [valueField="text"] Name of the desired value field in the dataset.
*/
/**
* @cfg {Boolean} [allowBlank=true] `false` to require at least one item in the list to be selected, `true` to allow no
* selection.
*/
allowBlank: true,
/**
* @cfg {Number} [minSelections=0] Minimum number of selections allowed.
*/
minSelections: 0,
/**
* @cfg {Number} [maxSelections=Number.MAX_VALUE] Maximum number of selections allowed.
*/
maxSelections: Number.MAX_VALUE,
/**
* @cfg {String} [blankText="This field is required"] Default text displayed when the control contains no items.
*/
blankText: 'This field is required',
/**
* @cfg {String} [minSelectionsText="Minimum {0}item(s) required"]
* Validation message displayed when {@link #minSelections} is not met.
* The {0} token will be replaced by the value of {@link #minSelections}.
*/
minSelectionsText: 'Minimum {0} item(s) required',
/**
* @cfg {String} [maxSelectionsText="Maximum {0}item(s) allowed"]
* Validation message displayed when {@link #maxSelections} is not met
* The {0} token will be replaced by the value of {@link #maxSelections}.
*/
maxSelectionsText: 'Maximum {0} item(s) required',
/**
* @cfg {String} [delimiter=","] The string used to delimit the selected values when {@link #getSubmitValue submitting}
* the field as part of a form. If you wish to have the selected values submitted as separate
* parameters rather than a single delimited parameter, set this to `null`.
*/
delimiter: ',',
/**
* @cfg String [dragText="{0} Item{1}"] The text to show while dragging items.
* {0} will be replaced by the number of items. {1} will be replaced by the plural
* form if there is more than 1 item.
*/
dragText: '{0} Item{1}',
/**
* @cfg {Ext.data.Store/Array} store The data source to which this MultiSelect is bound (defaults to `undefined`).
* Acceptable values for this property are:
*
*
any {@link Ext.data.Store Store} subclass
*
an Array : Arrays will be converted to a {@link Ext.data.ArrayStore} internally.
*
*
1-dimensional array : (e.g., ['Foo','Bar'])
* A 1-dimensional array will automatically be expanded (each array item will be the combo
* {@link #valueField value} and {@link #displayField text})
* For a multi-dimensional array, the value in index 0 of each item will be assumed to be the combo
* {@link #valueField value}, while the value at index 1 is assumed to be the combo {@link #displayField text}.
*
*/
ignoreSelectChange: 0,
/**
* @cfg {Object} listConfig
* An optional set of configuration properties that will be passed to the {@link Ext.view.BoundList}'s constructor.
* Any configuration that is valid for BoundList can be included.
*/
initComponent: function(){
var me = this;
me.bindStore(me.store, true);
if (me.store.autoCreated) {
me.valueField = me.displayField = 'field1';
if (!me.store.expanded) {
me.displayField = 'field2';
}
}
if (!Ext.isDefined(me.valueField)) {
me.valueField = me.displayField;
}
me.items = me.setupItems();
me.callParent();
me.initField();
me.addEvents('drop');
},
setupItems: function() {
var me = this;
me.boundList = Ext.create('Ext.view.BoundList', Ext.apply({
anchor: 'none 100%',
deferInitialRefresh: false,
border: 1,
multiSelect: true,
store: me.store,
displayField: me.displayField,
disabled: me.disabled
}, me.listConfig));
me.boundList.getSelectionModel().on('selectionchange', me.onSelectChange, me);
// Only need to wrap the BoundList in a Panel if we have a title.
if (!me.title) {
return me.boundList;
}
// Wrap to add a title
me.boundList.border = false;
return {
border: true,
anchor: 'none 100%',
layout: 'anchor',
title: me.title,
tbar: me.tbar,
items: me.boundList
};
},
onSelectChange: function(selModel, selections){
if (!this.ignoreSelectChange) {
this.setValue(selections);
}
},
getSelected: function(){
return this.boundList.getSelectionModel().getSelection();
},
// compare array values
isEqual: function(v1, v2) {
var fromArray = Ext.Array.from,
i = 0,
len;
v1 = fromArray(v1);
v2 = fromArray(v2);
len = v1.length;
if (len !== v2.length) {
return false;
}
for(; i < len; i++) {
if (v2[i] !== v1[i]) {
return false;
}
}
return true;
},
afterRender: function(){
var me = this,
records;
me.callParent();
if (me.selectOnRender) {
records = me.getRecordsForValue(me.value);
if (records.length) {
++me.ignoreSelectChange;
me.boundList.getSelectionModel().select(records);
--me.ignoreSelectChange;
}
delete me.toSelect;
}
if (me.ddReorder && !me.dragGroup && !me.dropGroup){
me.dragGroup = me.dropGroup = 'MultiselectDD-' + Ext.id();
}
if (me.draggable || me.dragGroup){
me.dragZone = Ext.create('Ext.view.DragZone', {
view: me.boundList,
ddGroup: me.dragGroup,
dragText: me.dragText
});
}
if (me.droppable || me.dropGroup){
me.dropZone = Ext.create('Ext.view.DropZone', {
view: me.boundList,
ddGroup: me.dropGroup,
handleNodeDrop: function(data, dropRecord, position) {
var view = this.view,
store = view.getStore(),
records = data.records,
index;
// remove the Models from the source Store
data.view.store.remove(records);
index = store.indexOf(dropRecord);
if (position === 'after') {
index++;
}
store.insert(index, records);
view.getSelectionModel().select(records);
me.fireEvent('drop', me, records);
}
});
}
},
isValid : function() {
var me = this,
disabled = me.disabled,
validate = me.forceValidation || !disabled;
return validate ? me.validateValue(me.value) : disabled;
},
validateValue: function(value) {
var me = this,
errors = me.getErrors(value),
isValid = Ext.isEmpty(errors);
if (!me.preventMark) {
if (isValid) {
me.clearInvalid();
} else {
me.markInvalid(errors);
}
}
return isValid;
},
markInvalid : function(errors) {
// Save the message and fire the 'invalid' event
var me = this,
oldMsg = me.getActiveError();
me.setActiveErrors(Ext.Array.from(errors));
if (oldMsg !== me.getActiveError()) {
me.updateLayout();
}
},
/**
* Clear any invalid styles/messages for this field.
*
* __Note:__ this method does not cause the Field's {@link #validate} or {@link #isValid} methods to return `true`
* if the value does not _pass_ validation. So simply clearing a field's errors will not necessarily allow
* submission of forms submitted with the {@link Ext.form.action.Submit#clientValidation} option set.
*/
clearInvalid : function() {
// Clear the message and fire the 'valid' event
var me = this,
hadError = me.hasActiveError();
me.unsetActiveError();
if (hadError) {
me.updateLayout();
}
},
getSubmitData: function() {
var me = this,
data = null,
val;
if (!me.disabled && me.submitValue && !me.isFileUpload()) {
val = me.getSubmitValue();
if (val !== null) {
data = {};
data[me.getName()] = val;
}
}
return data;
},
/**
* Returns the value that would be included in a standard form submit for this field.
*
* @return {String} The value to be submitted, or `null`.
*/
getSubmitValue: function() {
var me = this,
delimiter = me.delimiter,
val = me.getValue();
return Ext.isString(delimiter) ? val.join(delimiter) : val;
},
getValue: function(){
return this.value || [];
},
getRecordsForValue: function(value){
var me = this,
records = [],
all = me.store.getRange(),
valueField = me.valueField,
i = 0,
allLen = all.length,
rec,
j,
valueLen;
for (valueLen = value.length; i < valueLen; ++i) {
for (j = 0; j < allLen; ++j) {
rec = all[j];
if (rec.get(valueField) == value[i]) {
records.push(rec);
}
}
}
return records;
},
setupValue: function(value){
var delimiter = this.delimiter,
valueField = this.valueField,
i = 0,
out,
len,
item;
if (Ext.isDefined(value)) {
if (delimiter && Ext.isString(value)) {
value = value.split(delimiter);
} else if (!Ext.isArray(value)) {
value = [value];
}
for (len = value.length; i < len; ++i) {
item = value[i];
if (item && item.isModel) {
value[i] = item.get(valueField);
}
}
out = Ext.Array.unique(value);
} else {
out = [];
}
return out;
},
setValue: function(value){
var me = this,
selModel = me.boundList.getSelectionModel(),
store = me.store;
// Store not loaded yet - we cannot set the value
if (!store.getCount()) {
store.on({
load: Ext.Function.bind(me.setValue, me, [value]),
single: true
});
return;
}
value = me.setupValue(value);
me.mixins.field.setValue.call(me, value);
if (me.rendered) {
++me.ignoreSelectChange;
selModel.deselectAll();
if (value.length) {
selModel.select(me.getRecordsForValue(value));
}
--me.ignoreSelectChange;
} else {
me.selectOnRender = true;
}
},
clearValue: function(){
this.setValue([]);
},
onEnable: function(){
var list = this.boundList;
this.callParent();
if (list) {
list.enable();
}
},
onDisable: function(){
var list = this.boundList;
this.callParent();
if (list) {
list.disable();
}
},
getErrors : function(value) {
var me = this,
format = Ext.String.format,
errors = [],
numSelected;
value = Ext.Array.from(value || me.getValue());
numSelected = value.length;
if (!me.allowBlank && numSelected < 1) {
errors.push(me.blankText);
}
if (numSelected < me.minSelections) {
errors.push(format(me.minSelectionsText, me.minSelections));
}
if (numSelected > me.maxSelections) {
errors.push(format(me.maxSelectionsText, me.maxSelections));
}
return errors;
},
onDestroy: function(){
var me = this;
me.bindStore(null);
Ext.destroy(me.dragZone, me.dropZone);
me.callParent();
},
onBindStore: function(store){
var boundList = this.boundList;
if (boundList) {
boundList.bindStore(store);
}
}
});
