/**
* @docauthor Jason Johnston <jason@sencha.com>
*
* A combobox control with support for autocomplete, remote loading, and many other features.
*
* A ComboBox is like a combination of a traditional HTML text `<input>` field and a `<select>`
* field; the user is able to type freely into the field, and/or pick values from a dropdown selection
* list. The user can input any value by default, even if it does not appear in the selection list;
* to prevent free-form values and restrict them to items in the list, set {@link #forceSelection} to `true`.
*
* The selection list's options are populated from any {@link Ext.data.Store}, including remote
* stores. The data items in the store are mapped to each option's displayed text and backing value via
* the {@link #valueField} and {@link #displayField} configurations, respectively.
*
* If your store is not remote, i.e. it depends only on local data and is loaded up front, you should be
* sure to set the {@link #queryMode} to `'local'`, as this will improve responsiveness for the user.
*
* # Example usage:
*
* @example
* // The data store containing the list of states
* var states = Ext.create('Ext.data.Store', {
* fields: ['abbr', 'name'],
* data : [
* {"abbr":"AL", "name":"Alabama"},
* {"abbr":"AK", "name":"Alaska"},
* {"abbr":"AZ", "name":"Arizona"}
* //...
* ]
* });
*
* // Create the combo box, attached to the states data store
* Ext.create('Ext.form.ComboBox', {
* fieldLabel: 'Choose State',
* store: states,
* queryMode: 'local',
* displayField: 'name',
* valueField: 'abbr',
* renderTo: Ext.getBody()
* });
*
* # Events
*
* To do something when something in ComboBox is selected, configure the select event:
*
* var cb = Ext.create('Ext.form.ComboBox', {
* // all of your config options
* listeners:{
* scope: yourScope,
* 'select': yourFunction
* }
* });
*
* // Alternatively, you can assign events after the object is created:
* var cb = new Ext.form.field.ComboBox(yourOptions);
* cb.on('select', yourFunction, yourScope);
*
* # Multiple Selection
*
* ComboBox also allows selection of multiple items from the list; to enable multi-selection set the
* {@link #multiSelect} config to `true`.
*/
Ext.define('Ext.form.field.ComboBox', {
extend:'Ext.form.field.Picker',
requires: ['Ext.util.DelayedTask', 'Ext.EventObject', 'Ext.view.BoundList', 'Ext.view.BoundListKeyNav', 'Ext.data.StoreManager'],
alternateClassName: 'Ext.form.ComboBox',
alias: ['widget.combobox', 'widget.combo'],
/**
* @cfg {String} [triggerCls='x-form-arrow-trigger']
* An additional CSS class used to style the trigger button. The trigger will always get the {@link #triggerBaseCls}
* by default and `triggerCls` will be **appended** if specified.
*/
triggerCls: Ext.baseCSSPrefix + 'form-arrow-trigger',
/**
* @private
* @cfg {String}
* CSS class used to find the {@link #hiddenDataEl}
*/
hiddenDataCls: Ext.baseCSSPrefix + 'hide-display ' + Ext.baseCSSPrefix + 'form-data-hidden',
/**
* @override
*/
fieldSubTpl: [
'<div class="{hiddenDataCls}" role="presentation"></div>',
'<input id="{id}" type="{type}" ',
'<tpl if="size">size="{size}" </tpl>',
'<tpl if="tabIdx">tabIndex="{tabIdx}" </tpl>',
'class="{fieldCls} {typeCls}" autocomplete="off" />',
'<div id="{cmpId}-triggerWrap" class="{triggerWrapCls}" role="presentation">',
'{triggerEl}',
'<div class="{clearCls}" role="presentation"></div>',
'</div>',
{
compiled: true,
disableFormats: true
}
],
getSubTplData: function(){
var me = this;
Ext.applyIf(me.subTplData, {
hiddenDataCls: me.hiddenDataCls
});
return me.callParent(arguments);
},
afterRender: function(){
var me = this;
me.callParent(arguments);
me.setHiddenValue(me.value);
},
/**
* @cfg {Ext.data.Store/Array} store
* The data source to which this combo is bound. Acceptable values for this property are:
*
* - **any {@link Ext.data.Store Store} subclass**
* - **an Array** : Arrays will be converted to a {@link Ext.data.Store} internally, automatically generating
* {@link Ext.data.Field#name field names} to work with all data components.
*
* - **1-dimensional array** : (e.g., `['Foo','Bar']`)
*
* A 1-dimensional array will automatically be expanded (each array item will be used for both the combo
* {@link #valueField} and {@link #displayField})
*
* - **2-dimensional array** : (e.g., `[['f','Foo'],['b','Bar']]`)
*
* For a multi-dimensional array, the value in index 0 of each item will be assumed to be the combo
* {@link #valueField}, while the value at index 1 is assumed to be the combo {@link #displayField}.
*
* See also {@link #queryMode}.
*/
/**
* @cfg {Boolean} multiSelect
* If set to `true`, allows the combo field to hold more than one value at a time, and allows selecting multiple
* items from the dropdown list. The combo's text field will show all selected values separated by the
* {@link #delimiter}.
*/
multiSelect: false,
/**
* @cfg {String} delimiter
* The character(s) used to separate the {@link #displayField display values} of multiple selected items when
* `{@link #multiSelect} = true`.
*/
delimiter: ', ',
/**
* @cfg {String} displayField
* The underlying {@link Ext.data.Field#name data field name} to bind to this ComboBox.
*
* See also `{@link #valueField}`.
*/
displayField: 'text',
/**
* @cfg {String} valueField (required)
* The underlying {@link Ext.data.Field#name data value name} to bind to this ComboBox (defaults to match
* the value of the {@link #displayField} config).
*
* **Note**: use of a `valueField` requires the user to make a selection in order for a value to be mapped. See also
* `{@link #displayField}`.
*/
/**
* @cfg {String} triggerAction
* The action to execute when the trigger is clicked.
*
* - **`'all'`** :
*
* {@link #doQuery run the query} specified by the `{@link #allQuery}` config option
*
* - **`'query'`** :
*
* {@link #doQuery run the query} using the {@link Ext.form.field.Base#getRawValue raw value}.
*
* See also `{@link #queryParam}`.
*/
triggerAction: 'all',
/**
* @cfg {String} allQuery
* The text query to send to the server to return all records for the list with no filtering
*/
allQuery: '',
/**
* @cfg {String} queryParam
* Name of the parameter used by the Store to pass the typed string when the ComboBox is configured with
* `{@link #queryMode}: 'remote'`. If explicitly set to a falsy value it will not be sent.
*/
queryParam: 'query',
/**
* @cfg {String} queryMode
* The mode in which the ComboBox uses the configured Store. Acceptable values are:
*
* - **`'remote'`** :
*
* In `queryMode: 'remote'`, the ComboBox loads its Store dynamically based upon user interaction.
*
* This is typically used for "autocomplete" type inputs, and after the user finishes typing, the Store is {@link
* Ext.data.Store#load load}ed.
*
* A parameter containing the typed string is sent in the load request. The default parameter name for the input
* string is `query`, but this can be configured using the {@link #queryParam} config.
*
* In `queryMode: 'remote'`, the Store may be configured with `{@link Ext.data.Store#remoteFilter remoteFilter}:
* true`, and further filters may be _programatically_ added to the Store which are then passed with every load
* request which allows the server to further refine the returned dataset.
*
* Typically, in an autocomplete situation, {@link #hideTrigger} is configured `true` because it has no meaning for
* autocomplete.
*
* - **`'local'`** :
*
* ComboBox loads local data
*
* var combo = new Ext.form.field.ComboBox({
* renderTo: document.body,
* queryMode: 'local',
* store: new Ext.data.ArrayStore({
* id: 0,
* fields: [
* 'myId', // numeric value is the key
* 'displayText'
* ],
* data: [[1, 'item1'], [2, 'item2']] // data is local
* }),
* valueField: 'myId',
* displayField: 'displayText',
* triggerAction: 'all'
* });
*/
queryMode: 'remote',
queryCaching: true,
/**
* @cfg {Number} pageSize
* If greater than `0`, a {@link Ext.toolbar.Paging} is displayed in the footer of the dropdown list and the
* {@link #doQuery filter queries} will execute with page start and {@link Ext.view.BoundList#pageSize limit}
* parameters. Only applies when `{@link #queryMode} = 'remote'`.
*/
pageSize: 0,
/**
* @cfg {Number} queryDelay
* The length of time in milliseconds to delay between the start of typing and sending the query to filter the
* dropdown list (defaults to `500` if `{@link #queryMode} = 'remote'` or `10` if `{@link #queryMode} = 'local'`)
*/
/**
* @cfg {Number} minChars
* The minimum number of characters the user must type before autocomplete and {@link #typeAhead} activate (defaults
* to `4` if `{@link #queryMode} = 'remote'` or `0` if `{@link #queryMode} = 'local'`, does not apply if
* `{@link Ext.form.field.Trigger#editable editable} = false`).
*/
/**
* @cfg {Boolean} autoSelect
* `true` to automatically highlight the first result gathered by the data store in the dropdown list when it is
* opened. A false value would cause nothing in the list to be highlighted automatically, so
* the user would have to manually highlight an item before pressing the enter or {@link #selectOnTab tab} key to
* select it (unless the value of ({@link #typeAhead}) were true), or use the mouse to select a value.
*/
autoSelect: true,
/**
* @cfg {Boolean} typeAhead
* `true` to populate and autoselect the remainder of the text being typed after a configurable delay
* ({@link #typeAheadDelay}) if it matches a known value.
*/
typeAhead: false,
/**
* @cfg {Number} typeAheadDelay
* The length of time in milliseconds to wait until the typeahead text is displayed if `{@link #typeAhead} = true`
*/
typeAheadDelay: 250,
/**
* @cfg {Boolean} selectOnTab
* Whether the Tab key should select the currently highlighted item.
*/
selectOnTab: true,
/**
* @cfg {Boolean} forceSelection
* `true` to restrict the selected value to one of the values in the list, `false` to allow the user to set
* arbitrary text into the field.
*/
forceSelection: false,
/**
* @cfg {String} valueNotFoundText
* When using a name/value combo, if the value passed to setValue is not found in the store, valueNotFoundText will
* be displayed as the field text if defined. If this default text is used, it means there
* is no value set and no validation will occur on this field.
*/
/**
* @property {String} lastQuery
* The value of the match string used to filter the store. Delete this property to force a requery. Example use:
*
* var combo = new Ext.form.field.ComboBox({
* ...
* queryMode: 'remote',
* listeners: {
* // delete the previous query in the beforequery event or set
* // combo.lastQuery = null (this will reload the store the next time it expands)
* beforequery: function(qe){
* delete qe.combo.lastQuery;
* }
* }
* });
*
* To make sure the filter in the store is not cleared the first time the ComboBox trigger is used configure the
* combo with `lastQuery=''`. Example use:
*
* var combo = new Ext.form.field.ComboBox({
* ...
* queryMode: 'local',
* triggerAction: 'all',
* lastQuery: ''
* });
*/
/**
* @cfg {Object} defaultListConfig
* Set of options that will be used as defaults for the user-configured {@link #listConfig} object.
*/
defaultListConfig: {
emptyText: '',
loadingText: 'Loading...',
loadingHeight: 70,
minWidth: 70,
maxHeight: 300,
shadow: 'sides'
},
/**
* @cfg {String/HTMLElement/Ext.Element} transform
* The id, DOM node or {@link Ext.Element} of an existing HTML `<select>` element to convert into a ComboBox. The
* target select's options will be used to build the options in the ComboBox dropdown; a configured {@link #store}
* will take precedence over this.
*/
/**
* @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. Some of the more useful ones are:
*
* - {@link Ext.view.BoundList#cls} - defaults to empty
* - {@link Ext.view.BoundList#emptyText} - defaults to empty string
* - {@link Ext.view.BoundList#itemSelector} - defaults to the value defined in BoundList
* - {@link Ext.view.BoundList#loadingText} - defaults to `'Loading...'`
* - {@link Ext.view.BoundList#minWidth} - defaults to `70`
* - {@link Ext.view.BoundList#maxWidth} - defaults to `undefined`
* - {@link Ext.view.BoundList#maxHeight} - defaults to `300`
* - {@link Ext.view.BoundList#resizable} - defaults to `false`
* - {@link Ext.view.BoundList#shadow} - defaults to `'sides'`
* - {@link Ext.view.BoundList#width} - defaults to `undefined` (automatically set to the width of the ComboBox
* field if {@link #matchFieldWidth} is true)
*/
//private
ignoreSelection: 0,
initComponent: function() {
var me = this,
isDefined = Ext.isDefined,
store = me.store,
transform = me.transform,
transformSelect, isLocalMode;
Ext.applyIf(me.renderSelectors, {
hiddenDataEl: '.' + me.hiddenDataCls.split(' ').join('.')
});
//<debug>
if (me.typeAhead && me.multiSelect) {
Ext.Error.raise('typeAhead and multiSelect are mutually exclusive options -- please remove one of them.');
}
if (me.typeAhead && !me.editable) {
Ext.Error.raise('If typeAhead is enabled the combo must be editable: true -- please change one of those settings.');
}
if (me.selectOnFocus && !me.editable) {
Ext.Error.raise('If selectOnFocus is enabled the combo must be editable: true -- please change one of those settings.');
}
//</debug>
this.addEvents(
/**
* @event beforequery
* Fires before all queries are processed. Return false to cancel the query or set the queryEvent's cancel
* property to true.
*
* @param {Object} queryEvent An object that has these properties:
*
* - `combo` : Ext.form.field.ComboBox
*
* This combo box
*
* - `query` : String
*
* The query string
*
* - `forceAll` : Boolean
*
* True to force "all" query
*
* - `cancel` : Boolean
*
* Set to true to cancel the query
*/
'beforequery',
/**
* @event select
* Fires when at least one list item is selected.
* @param {Ext.form.field.ComboBox} combo This combo box
* @param {Array} records The selected records
*/
'select',
/**
* @event beforeselect
* Fires before the selected item is added to the collection
* @param {Ext.form.field.ComboBox} combo This combo box
* @param {Ext.data.Record} record The selected record
* @param {Number} index The index of the selected record
*/
'beforeselect',
/**
* @event beforedeselect
* Fires before the deselected item is removed from the collection
* @param {Ext.form.field.ComboBox} combo This combo box
* @param {Ext.data.Record} record The deselected record
* @param {Number} index The index of the deselected record
*/
'beforedeselect'
);
// Build store from 'transform' HTML select element's options
if (transform) {
transformSelect = Ext.getDom(transform);
if (transformSelect) {
store = Ext.Array.map(Ext.Array.from(transformSelect.options), function(option) {
return [option.value, option.text];
});
if (!me.name) {
me.name = transformSelect.name;
}
if (!('value' in me)) {
me.value = transformSelect.value;
}
}
}
me.bindStore(store || 'ext-empty-store', true);
store = me.store;
if (store.autoCreated) {
me.queryMode = 'local';
me.valueField = me.displayField = 'field1';
if (!store.expanded) {
me.displayField = 'field2';
}
}
if (!isDefined(me.valueField)) {
me.valueField = me.displayField;
}
isLocalMode = me.queryMode === 'local';
if (!isDefined(me.queryDelay)) {
me.queryDelay = isLocalMode ? 10 : 500;
}
if (!isDefined(me.minChars)) {
me.minChars = isLocalMode ? 0 : 4;
}
if (!me.displayTpl) {
me.displayTpl = Ext.create('Ext.XTemplate',
'<tpl for=".">' +
'{[typeof values === "string" ? values : values["' + me.displayField + '"]]}' +
'<tpl if="xindex < xcount">' + me.delimiter + '</tpl>' +
'</tpl>'
);
} else if (Ext.isString(me.displayTpl)) {
me.displayTpl = Ext.create('Ext.XTemplate', me.displayTpl);
}
me.callParent();
me.doQueryTask = Ext.create('Ext.util.DelayedTask', me.doRawQuery, me);
// store has already been loaded, setValue
if (me.store.getCount() > 0) {
me.setValue(me.value);
}
// render in place of 'transform' select
if (transformSelect) {
me.render(transformSelect.parentNode, transformSelect);
Ext.removeNode(transformSelect);
delete me.renderTo;
}
},
/**
* Returns the store associated with this ComboBox.
* @return {Ext.data.Store} The store
*/
getStore : function(){
return this.store;
},
beforeBlur: function() {
this.doQueryTask.cancel();
this.assertValue();
},
// private
assertValue: function() {
var me = this,
value = me.getRawValue(),
rec;
if (me.forceSelection) {
if (me.multiSelect) {
// For multiselect, check that the current displayed value matches the current
// selection, if it does not then revert to the most recent selection.
if (value !== me.getDisplayValue()) {
me.setValue(me.lastSelection);
}
} else {
// For single-select, match the displayed value to a record and select it,
// if it does not match a record then revert to the most recent selection.
rec = me.findRecordByDisplay(value);
if (rec) {
me.select(rec);
} else {
me.setValue(me.lastSelection);
}
}
}
me.collapse();
},
onTypeAhead: function() {
var me = this,
displayField = me.displayField,
record = me.store.findRecord(displayField, me.getRawValue()),
boundList = me.getPicker(),
newValue, len, selStart;
if (record) {
newValue = record.get(displayField);
len = newValue.length;
selStart = me.getRawValue().length;
boundList.highlightItem(boundList.getNode(record));
if (selStart !== 0 && selStart !== len) {
me.setRawValue(newValue);
me.selectText(selStart, newValue.length);
}
}
},
// invoked when a different store is bound to this combo
// than the original
resetToDefault: function() {
},
bindStore: function(store, initial) {
var me = this,
oldStore = me.store;
// this code directly accesses this.picker, bc invoking getPicker
// would create it when we may be preping to destroy it
if (oldStore && !initial) {
if (oldStore !== store && oldStore.autoDestroy) {
oldStore.destroyStore();
} else {
oldStore.un({
scope: me,
load: me.onLoad,
exception: me.collapse
});
}
if (!store) {
me.store = null;
if (me.picker) {
me.picker.bindStore(null);
}
}
}
if (store) {
if (!initial) {
me.resetToDefault();
}
me.store = Ext.data.StoreManager.lookup(store);
me.store.on({
scope: me,
load: me.onLoad,
exception: me.collapse
});
if (me.picker) {
me.picker.bindStore(store);
}
}
},
onLoad: function() {
var me = this,
value = me.value;
// If performing a remote query upon the raw value...
if (me.rawQuery) {
me.rawQuery = false;
me.syncSelection();
if (me.picker && !me.picker.getSelectionModel().hasSelection()) {
me.doAutoSelect();
}
}
// If store initial load or triggerAction: 'all' trigger click.
else {
// Set the value on load
if (me.value) {
me.setValue(me.value);
} else {
// There's no value.
// Highlight the first item in the list if autoSelect: true
if (me.store.getCount()) {
me.doAutoSelect();
} else {
me.setValue('');
}
}
}
},
/**
* @private
* Execute the query with the raw contents within the textfield.
*/
doRawQuery: function() {
this.doQuery(this.getRawValue(), false, true);
},
/**
* Executes a query to filter the dropdown list. Fires the {@link #beforequery} event prior to performing the query
* allowing the query action to be canceled if needed.
*
* @param {String} queryString The SQL query to execute
* @param {Boolean} [forceAll=false] `true` to force the query to execute even if there are currently fewer characters in
* the field than the minimum specified by the `{@link #minChars}` config option. It also clears any filter
* previously saved in the current store.
* @param {Boolean} [rawQuery=false] Pass as true if the raw typed value is being used as the query string. This causes the
* resulting store load to leave the raw value undisturbed.
* @return {Boolean} true if the query was permitted to run, false if it was cancelled by a {@link #beforequery}
* handler.
*/
doQuery: function(queryString, forceAll, rawQuery) {
queryString = queryString || '';
// store in object and pass by reference in 'beforequery'
// so that client code can modify values.
var me = this,
qe = {
query: queryString,
forceAll: forceAll,
combo: me,
cancel: false
},
store = me.store,
isLocalMode = me.queryMode === 'local';
if (me.fireEvent('beforequery', qe) === false || qe.cancel) {
return false;
}
// get back out possibly modified values
queryString = qe.query;
forceAll = qe.forceAll;
// query permitted to run
if (forceAll || (queryString.length >= me.minChars)) {
// expand before starting query so LoadMask can position itself correctly
me.expand();
// make sure they aren't querying the same thing
if (!me.queryCaching || me.lastQuery !== queryString) {
me.lastQuery = queryString;
if (isLocalMode) {
// forceAll means no filtering - show whole dataset.
if (forceAll) {
store.clearFilter();
} else {
// Clear filter, but supress event so that the BoundList is not immediately updated.
store.clearFilter(true);
store.filter(me.displayField, queryString);
}
} else {
// Set flag for onLoad handling to know how the Store was loaded
me.rawQuery = rawQuery;
// In queryMode: 'remote', we assume Store filters are added by the developer as remote filters,
// and these are automatically passed as params with every load call, so we do *not* call clearFilter.
if (me.pageSize) {
// if we're paging, we've changed the query so start at page 1.
me.loadPage(1);
} else {
store.load({
params: me.getParams(queryString)
});
}
}
}
// Clear current selection if it does not match the current value in the field
if (me.getRawValue() !== me.getDisplayValue()) {
me.ignoreSelection++;
me.picker.getSelectionModel().deselectAll();
me.ignoreSelection--;
}
if (isLocalMode) {
me.doAutoSelect();
}
if (me.typeAhead) {
me.doTypeAhead();
}
}
return true;
},
loadPage: function(pageNum){
this.store.loadPage(pageNum, {
params: this.getParams(this.lastQuery)
});
},
onPageChange: function(toolbar, newPage){
/*
* Return false here so we can call load ourselves and inject the query param.
* We don't want to do this for every store load since the developer may load
* the store through some other means so we won't add the query param.
*/
this.loadPage(newPage);
return false;
},
// private
getParams: function(queryString) {
var params = {},
param = this.queryParam;
if (param) {
params[param] = queryString;
}
return params;
},
/**
* @private
* If the autoSelect config is true, and the picker is open, highlights the first item.
*/
doAutoSelect: function() {
var me = this,
picker = me.picker,
lastSelected, itemNode;
if (picker && me.autoSelect && me.store.getCount() > 0) {
// Highlight the last selected item and scroll it into view
lastSelected = picker.getSelectionModel().lastSelected;
itemNode = picker.getNode(lastSelected || 0);
if (itemNode) {
picker.highlightItem(itemNode);
picker.listEl.scrollChildIntoView(itemNode, false);
}
}
},
doTypeAhead: function() {
if (!this.typeAheadTask) {
this.typeAheadTask = Ext.create('Ext.util.DelayedTask', this.onTypeAhead, this);
}
if (this.lastKey != Ext.EventObject.BACKSPACE && this.lastKey != Ext.EventObject.DELETE) {
this.typeAheadTask.delay(this.typeAheadDelay);
}
},
onTriggerClick: function() {
var me = this;
if (!me.readOnly && !me.disabled) {
if (me.isExpanded) {
me.collapse();
} else {
me.onFocus({});
if (me.triggerAction === 'all') {
me.doQuery(me.allQuery, true);
} else {
me.doQuery(me.getRawValue(), false, true);
}
}
me.inputEl.focus();
}
},
// store the last key and doQuery if relevant
onKeyUp: function(e, t) {
var me = this,
key = e.getKey();
if (!me.readOnly && !me.disabled && me.editable) {
me.lastKey = key;
// we put this in a task so that we can cancel it if a user is
// in and out before the queryDelay elapses
// perform query w/ any normal key or backspace or delete
if (!e.isSpecialKey() || key == e.BACKSPACE || key == e.DELETE) {
me.doQueryTask.delay(me.queryDelay);
}
}
if (me.enableKeyEvents) {
me.callParent(arguments);
}
},
initEvents: function() {
var me = this;
me.callParent();
/*
* Setup keyboard handling. If enableKeyEvents is true, we already have
* a listener on the inputEl for keyup, so don't create a second.
*/
if (!me.enableKeyEvents) {
me.mon(me.inputEl, 'keyup', me.onKeyUp, me);
}
},
onDestroy: function(){
this.bindStore(null);
this.callParent();
},
createPicker: function() {
var me = this,
picker,
menuCls = Ext.baseCSSPrefix + 'menu',
opts = Ext.apply({
pickerField: me,
selModel: {
mode: me.multiSelect ? 'SIMPLE' : 'SINGLE'
},
floating: true,
hidden: true,
ownerCt: me.ownerCt,
cls: me.el.up('.' + menuCls) ? menuCls : '',
store: me.store,
displayField: me.displayField,
focusOnToFront: false,
pageSize: me.pageSize,
tpl: me.tpl
}, me.listConfig, me.defaultListConfig);
picker = me.picker = Ext.create('Ext.view.BoundList', opts);
if (me.pageSize) {
picker.pagingToolbar.on('beforechange', me.onPageChange, me);
}
me.mon(picker, {
itemclick: me.onItemClick,
refresh: me.onListRefresh,
scope: me
});
me.mon(picker.getSelectionModel(), {
'beforeselect': me.onBeforeSelect,
'beforedeselect': me.onBeforeDeselect,
'selectionchange': me.onListSelectionChange,
scope: me
});
return picker;
},
alignPicker: function(){
var me = this,
picker = me.picker,
heightAbove = me.getPosition()[1] - Ext.getBody().getScroll().top,
heightBelow = Ext.Element.getViewHeight() - heightAbove - me.getHeight(),
space = Math.max(heightAbove, heightBelow);
me.callParent();
if (picker.getHeight() > space) {
picker.setHeight(space - 5); // have some leeway so we aren't flush against
me.doAlign();
}
},
onListRefresh: function() {
this.alignPicker();
this.syncSelection();
},
onItemClick: function(picker, record){
/*
* If we're doing single selection, the selection change events won't fire when
* clicking on the selected element. Detect it here.
*/
var me = this,
lastSelection = me.lastSelection,
valueField = me.valueField,
selected;
if (!me.multiSelect && lastSelection) {
selected = lastSelection[0];
if (selected && (record.get(valueField) === selected.get(valueField))) {
// Make sure we also update the display value if it's only partial
me.displayTplData = [record.data];
me.setRawValue(me.getDisplayValue());
me.collapse();
}
}
},
onBeforeSelect: function(list, record) {
return this.fireEvent('beforeselect', this, record, record.index);
},
onBeforeDeselect: function(list, record) {
return this.fireEvent('beforedeselect', this, record, record.index);
},
onListSelectionChange: function(list, selectedRecords) {
var me = this,
isMulti = me.multiSelect,
hasRecords = selectedRecords.length > 0;
// Only react to selection if it is not called from setValue, and if our list is
// expanded (ignores changes to the selection model triggered elsewhere)
if (!me.ignoreSelection && me.isExpanded) {
if (!isMulti) {
Ext.defer(me.collapse, 1, me);
}
/*
* Only set the value here if we're in multi selection mode or we have
* a selection. Otherwise setValue will be called with an empty value
* which will cause the change event to fire twice.
*/
if (isMulti || hasRecords) {
me.setValue(selectedRecords, false);
}
if (hasRecords) {
me.fireEvent('select', me, selectedRecords);
}
me.inputEl.focus();
}
},
/**
* @private
* Enables the key nav for the BoundList when it is expanded.
*/
onExpand: function() {
var me = this,
keyNav = me.listKeyNav,
selectOnTab = me.selectOnTab,
picker = me.getPicker();
// Handle BoundList navigation from the input field. Insert a tab listener specially to enable selectOnTab.
if (keyNav) {
keyNav.enable();
} else {
keyNav = me.listKeyNav = Ext.create('Ext.view.BoundListKeyNav', this.inputEl, {
boundList: picker,
forceKeyDown: true,
tab: function(e) {
if (selectOnTab) {
this.selectHighlighted(e);
me.triggerBlur();
}
// Tab key event is allowed to propagate to field
return true;
}
});
}
// While list is expanded, stop tab monitoring from Ext.form.field.Trigger so it doesn't short-circuit selectOnTab
if (selectOnTab) {
me.ignoreMonitorTab = true;
}
Ext.defer(keyNav.enable, 1, keyNav); //wait a bit so it doesn't react to the down arrow opening the picker
me.inputEl.focus();
},
/**
* @private
* Disables the key nav for the BoundList when it is collapsed.
*/
onCollapse: function() {
var me = this,
keyNav = me.listKeyNav;
if (keyNav) {
keyNav.disable();
me.ignoreMonitorTab = false;
}
},
/**
* Selects an item by a {@link Ext.data.Model Model}, or by a key value.
* @param {Object} r
*/
select: function(r) {
this.setValue(r, true);
},
/**
* Finds the record by searching for a specific field/value combination.
* @param {String} field The name of the field to test.
* @param {Object} value The value to match the field against.
* @return {Ext.data.Model} The matched record or false.
*/
findRecord: function(field, value) {
var ds = this.store,
idx = ds.findExact(field, value);
return idx !== -1 ? ds.getAt(idx) : false;
},
/**
* Finds the record by searching values in the {@link #valueField}.
* @param {Object} value The value to match the field against.
* @return {Ext.data.Model} The matched record or false.
*/
findRecordByValue: function(value) {
return this.findRecord(this.valueField, value);
},
/**
* Finds the record by searching values in the {@link #displayField}.
* @param {Object} value The value to match the field against.
* @return {Ext.data.Model} The matched record or false.
*/
findRecordByDisplay: function(value) {
return this.findRecord(this.displayField, value);
},
/**
* Sets the specified value(s) into the field. For each value, if a record is found in the {@link #store} that
* matches based on the {@link #valueField}, then that record's {@link #displayField} will be displayed in the
* field. If no match is found, and the {@link #valueNotFoundText} config option is defined, then that will be
* displayed as the default field text. Otherwise a blank value will be shown, although the value will still be set.
* @param {String/String[]} value The value(s) to be set. Can be either a single String or {@link Ext.data.Model},
* or an Array of Strings or Models.
* @return {Ext.form.field.Field} this
*/
setValue: function(value, doSelect) {
var me = this,
valueNotFoundText = me.valueNotFoundText,
inputEl = me.inputEl,
i, len, record,
models = [],
displayTplData = [],
processedValue = [];
if (me.store.loading) {
// Called while the Store is loading. Ensure it is processed by the onLoad method.
me.value = value;
me.setHiddenValue(me.value);
return me;
}
// This method processes multi-values, so ensure value is an array.
value = Ext.Array.from(value);
// Loop through values
for (i = 0, len = value.length; i < len; i++) {
record = value[i];
if (!record || !record.isModel) {
record = me.findRecordByValue(record);
}
// record found, select it.
if (record) {
models.push(record);
displayTplData.push(record.data);
processedValue.push(record.get(me.valueField));
}
// record was not found, this could happen because
// store is not loaded or they set a value not in the store
else {
// If we are allowing insertion of values not represented in the Store, then set the value, and the display value
if (!me.forceSelection) {
displayTplData.push(value[i]);
processedValue.push(value[i]);
}
// Else, if valueNotFoundText is defined, display it, otherwise display nothing for this value
else if (Ext.isDefined(valueNotFoundText)) {
displayTplData.push(valueNotFoundText);
}
}
}
// Set the value of this field. If we are multiselecting, then that is an array.
me.setHiddenValue(processedValue);
me.value = me.multiSelect ? processedValue : processedValue[0];
if (!Ext.isDefined(me.value)) {
me.value = null;
}
me.displayTplData = displayTplData; //store for getDisplayValue method
me.lastSelection = me.valueModels = models;
if (inputEl && me.emptyText && !Ext.isEmpty(value)) {
inputEl.removeCls(me.emptyCls);
}
// Calculate raw value from the collection of Model data
me.setRawValue(me.getDisplayValue());
me.checkChange();
if (doSelect !== false) {
me.syncSelection();
}
me.applyEmptyText();
return me;
},
/**
* @private
* Set the value of {@link #hiddenDataEl}
* Dynamically adds and removes input[type=hidden] elements
*/
setHiddenValue: function(values){
var me = this, i;
if (!me.hiddenDataEl) {
return;
}
values = Ext.Array.from(values);
var dom = me.hiddenDataEl.dom,
childNodes = dom.childNodes,
input = childNodes[0],
valueCount = values.length,
childrenCount = childNodes.length;
if (!input && valueCount > 0) {
me.hiddenDataEl.update(Ext.DomHelper.markup({tag:'input', type:'hidden', name:me.name}));
childrenCount = 1;
input = dom.firstChild;
}
while (childrenCount > valueCount) {
dom.removeChild(childNodes[0]);
-- childrenCount;
}
while (childrenCount < valueCount) {
dom.appendChild(input.cloneNode(true));
++ childrenCount;
}
for (i = 0; i < valueCount; i++) {
childNodes[i].value = values[i];
}
},
/**
* @private Generates the string value to be displayed in the text field for the currently stored value
*/
getDisplayValue: function() {
return this.displayTpl.apply(this.displayTplData);
},
getValue: function() {
// If the user has not changed the raw field value since a value was selected from the list,
// then return the structured value from the selection. If the raw field value is different
// than what would be displayed due to selection, return that raw value.
var me = this,
picker = me.picker,
rawValue = me.getRawValue(), //current value of text field
value = me.value; //stored value from last selection or setValue() call
if (me.getDisplayValue() !== rawValue) {
value = rawValue;
me.value = me.displayTplData = me.valueModels = null;
if (picker) {
me.ignoreSelection++;
picker.getSelectionModel().deselectAll();
me.ignoreSelection--;
}
}
return value;
},
getSubmitValue: function() {
return this.getValue();
},
isEqual: function(v1, v2) {
var fromArray = Ext.Array.from,
i, len;
v1 = fromArray(v1);
v2 = fromArray(v2);
len = v1.length;
if (len !== v2.length) {
return false;
}
for(i = 0; i < len; i++) {
if (v2[i] !== v1[i]) {
return false;
}
}
return true;
},
/**
* Clears any value currently set in the ComboBox.
*/
clearValue: function() {
this.setValue([]);
},
/**
* @private Synchronizes the selection in the picker to match the current value of the combobox.
*/
syncSelection: function() {
var me = this,
ExtArray = Ext.Array,
picker = me.picker,
selection, selModel;
if (picker) {
// From the value, find the Models that are in the store's current data
selection = [];
ExtArray.forEach(me.valueModels || [], function(value) {
if (value && value.isModel && me.store.indexOf(value) >= 0) {
selection.push(value);
}
});
// Update the selection to match
me.ignoreSelection++;
selModel = picker.getSelectionModel();
selModel.deselectAll();
if (selection.length) {
selModel.select(selection);
}
me.ignoreSelection--;
}
}
});