The source code

/** * @class Ext.form.ComboBox * @extends Ext.form.TriggerField *

A combobox control with support for autocomplete, remote-loading, paging and many other features.

A ComboBox works in a similar manner to a traditional HTML <select> field. The difference is * that to submit the {@link #valueField}, you must specify a {@link #hiddenName} to create a hidden input * field to hold the value of the valueField. The {@link #displayField} is shown in the text field * which is named according to the {@link #name}.

Events

To do something when something in ComboBox is selected, configure the select event:


var cb = new 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.ComboBox(yourOptions);
cb.on('select', yourFunction, yourScope);
 *

* *

ComboBox in Grid

If using a ComboBox in an {@link Ext.grid.EditorGridPanel Editor Grid} a {@link Ext.grid.Column#renderer renderer} * will be needed to show the displayField when the editor is not active. Set up the renderer manually, or implement * a reusable render, for example:


// create reusable renderer
Ext.util.Format.comboRenderer = function(combo){
    return function(value){
        var record = combo.findRecord(combo.{@link #valueField}, value);
        return record ? record.get(combo.{@link #displayField}) : combo.{@link #valueNotFoundText};
    }
}

// create the combo instance
var combo = new Ext.form.ComboBox({
    {@link #typeAhead}: true,
    {@link #triggerAction}: 'all',
    {@link #lazyRender}:true,
    {@link #mode}: 'local',
    {@link #store}: new Ext.data.ArrayStore({
        id: 0,
        fields: [
            'myId',
            'displayText'
        ],
        data: [[1, 'item1'], [2, 'item2']]
    }),
    {@link #valueField}: 'myId',
    {@link #displayField}: 'displayText'
});

// snippet of column model used within grid
var cm = new Ext.grid.ColumnModel([{
       ...
    },{
       header: "Some Header",
       dataIndex: 'whatever',
       width: 130,
       editor: combo, // specify reference to combo instance
       renderer: Ext.util.Format.comboRenderer(combo) // pass combo instance to reusable renderer
    },
    ...
]);
 *

* *

Filtering

A ComboBox {@link #doQuery uses filtering itself}, for information about filtering the ComboBox * store manually see {@link #lastQuery}.

* @constructor * Create a new ComboBox. * @param {Object} config Configuration options * @xtype combo */ Ext.form.ComboBox = Ext.extend(Ext.form.TriggerField, {

/** * @cfg {Mixed} transform The id, DOM node or element of an existing HTML SELECT to convert to a ComboBox. * Note that if you specify this and the combo is going to be in an {@link Ext.form.BasicForm} or * {@link Ext.form.FormPanel}, you must also set {@link #lazyRender} = true. */

/** * @cfg {Boolean} lazyRender true to prevent the ComboBox from rendering until requested * (should always be used when rendering into an {@link Ext.Editor} (e.g. {@link Ext.grid.EditorGridPanel Grids}), * defaults to false). */

/** * @cfg {String/Object} autoCreate

A {@link Ext.DomHelper DomHelper} element spec, or true for a default * element spec. Used to create the {@link Ext.Component#getEl Element} which will encapsulate this Component. * See {@link Ext.Component#autoEl autoEl} for details. Defaults to:

{tag: "input", type: "text", size: "24", autocomplete: "off"}

/** * @cfg {Ext.data.Store/Array} store The data source to which this combo 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, * 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 #mode}.

/** * @cfg {String} title If supplied, a header element is created containing this text and added into the top of * the dropdown list (defaults to undefined, with no header element) */ // private defaultAutoCreate : {tag: "input", type: "text", size: "24", autocomplete: "off"},

/** * @cfg {Number} listWidth The width (used as a parameter to {@link Ext.Element#setWidth}) of the dropdown * list (defaults to the width of the ComboBox field). See also {@link #minListWidth} */ /** * @cfg {String} displayField The underlying {@link Ext.data.Field#name data field name} to bind to this * ComboBox (defaults to undefined if {@link #mode} = 'remote' or 'field1' if * {@link #transform transforming a select} or if the {@link #store field name is autogenerated based on * the store configuration}). * See also {@link #valueField}. * Note: if using a ComboBox in an {@link Ext.grid.EditorGridPanel Editor Grid} a * {@link Ext.grid.Column#renderer renderer} will be needed to show the displayField when the editor is not * active. */ /** * @cfg {String} valueField The underlying {@link Ext.data.Field#name data value name} to bind to this * ComboBox (defaults to undefined if {@link #mode} = 'remote' or 'field2' if * {@link #transform transforming a select} or if the {@link #store field name is autogenerated based on * the store configuration}). * Note: use of a valueField requires the user to make a selection in order for a value to be * mapped. See also {@link #hiddenName}, {@link #hiddenValue}, and {@link #displayField}. */ /** * @cfg {String} hiddenName If specified, a hidden form field with this name is dynamically generated to store the * field's data value (defaults to the underlying DOM element's name). Required for the combo's value to automatically * post during a form submission. See also {@link #valueField}. */ /** * @cfg {String} hiddenId If {@link #hiddenName} is specified, hiddenId can also be provided * to give the hidden field a unique id. The hiddenId and combo {@link Ext.Component#id id} should be * different, since no two DOM nodes should share the same id. */ /** * @cfg {String} hiddenValue Sets the initial value of the hidden field if {@link #hiddenName} is * specified to contain the selected {@link #valueField}, from the Store. Defaults to the configured * {@link Ext.form.Field#value value}. */ /** * @cfg {String} listClass The CSS class to add to the predefined 'x-combo-list' class * applied the dropdown list element (defaults to ''). */ listClass : '', /** * @cfg {String} selectedClass CSS class to apply to the selected item in the dropdown list * (defaults to 'x-combo-selected') */ selectedClass : 'x-combo-selected', /** * @cfg {String} listEmptyText The empty text to display in the data view if no items are found. * (defaults to '') */ listEmptyText: '', /** * @cfg {String} triggerClass An additional CSS class used to style the trigger button. The trigger will always * get the class 'x-form-trigger' and triggerClass will be appended if specified * (defaults to 'x-form-arrow-trigger' which displays a downward arrow icon). */ triggerClass : 'x-form-arrow-trigger', /** * @cfg {Boolean/String} shadow true or "sides" for the default effect, "frame" for * 4-way shadow, and "drop" for bottom-right */ shadow : 'sides', /** * @cfg {String/Array} listAlign A valid anchor position value. See {@link Ext.Element#alignTo} for details * on supported anchor positions and offsets. To specify x/y offsets as well, this value * may be specified as an Array of {@link Ext.Element#alignTo} method arguments. * [ 'tl-bl?', [6,0] ] (defaults to 'tl-bl?') */ listAlign : 'tl-bl?', /** * @cfg {Number} maxHeight The maximum height in pixels of the dropdown list before scrollbars are shown * (defaults to 300) */ maxHeight : 300, /** * @cfg {Number} minHeight The minimum height in pixels of the dropdown list when the list is constrained by its * distance to the viewport edges (defaults to 90) */ minHeight : 90, /** * @cfg {String} triggerAction The action to execute when the trigger is clicked. * * 'query' : Default * {@link #doQuery run the query} using the {@link Ext.form.Field#getRawValue raw value}. * 'all' : * {@link #doQuery run the query} specified by the {@link #allQuery} config option * * See also {@link #queryParam}. */ triggerAction : 'query', /** * @cfg {Number} minChars The minimum number of characters the user must type before autocomplete and * {@link #typeAhead} activate (defaults to 4 if {@link #mode} = 'remote' or 0 if * {@link #mode} = 'local', does not apply if * {@link Ext.form.TriggerField#editable editable} = false). */ minChars : 4, /** * @cfg {Boolean} autoSelect true to select the first result gathered by the data store (defaults * to true). A false value would require a manual selection from the dropdown list to set the components value * unless the value of ({@link #typeAheadDelay}) were true. */ 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 (defaults * to false) */ typeAhead : false, /** * @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 #mode} = 'remote' * or 10 if {@link #mode} = 'local') */ queryDelay : 500, /** * @cfg {Number} pageSize If greater than 0, a {@link Ext.PagingToolbar} is displayed in the * footer of the dropdown list and the {@link #doQuery filter queries} will execute with page start and * {@link Ext.PagingToolbar#pageSize limit} parameters. Only applies when {@link #mode} = 'remote' * (defaults to 0). */ pageSize : 0, /** * @cfg {Boolean} selectOnFocus true to select any existing text in the field immediately on focus. * Only applies when {@link Ext.form.TriggerField#editable editable} = true (defaults to * false). */ selectOnFocus : false, /** * @cfg {String} queryParam Name of the query ({@link Ext.data.Store#baseParam baseParam} name for the store) * as it will be passed on the querystring (defaults to 'query') */ queryParam : 'query', /** * @cfg {String} loadingText The text to display in the dropdown list while data is loading. Only applies * when {@link #mode} = 'remote' (defaults to 'Loading...') */ loadingText : 'Loading...', /** * @cfg {Boolean} resizable true to add a resize handle to the bottom of the dropdown list * (creates an {@link Ext.Resizable} with 'se' {@link Ext.Resizable#pinned pinned} handles). * Defaults to false. */ resizable : false, /** * @cfg {Number} handleHeight The height in pixels of the dropdown list resize handle if * {@link #resizable} = true (defaults to 8) */ handleHeight : 8, /** * @cfg {String} allQuery The text query to send to the server to return all records for the list * with no filtering (defaults to '') */ allQuery: '', /** * @cfg {String} mode Acceptable values are: * * 'remote' : Default * Automatically loads the {@link #store} the first time the trigger * is clicked. If you do not want the store to be automatically loaded the first time the trigger is * clicked, set to 'local' and manually load the store. To force a requery of the store * every time the trigger is clicked see {@link #lastQuery}. * 'local' : * ComboBox loads local data * var combo = new Ext.form.ComboBox({ renderTo: document.body, mode: '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' }); * * */ mode: 'remote', /** * @cfg {Number} minListWidth The minimum width of the dropdown list in pixels (defaults to 70, will * be ignored if {@link #listWidth} has a higher value) */ minListWidth : 70, /** * @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 (defaults to false) */ forceSelection : false, /** * @cfg {Number} typeAheadDelay The length of time in milliseconds to wait until the typeahead text is displayed * if {@link #typeAhead} = true (defaults to 250) */ typeAheadDelay : 250, /** * @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 (defaults to undefined). If this * default text is used, it means there is no value set and no validation will occur on this field. */ /** * @cfg {Boolean} lazyInit true to not initialize the list for this combo until the field is focused * (defaults to true) */ lazyInit : true, /** * @cfg {Boolean} clearFilterOnReset true to clear any filters on the store (when in local mode) when reset is called * (defaults to true) */ clearFilterOnReset : true, /** * @cfg {Boolean} submitValue False to clear the name attribute on the field so that it is not submitted during a form post. * If a hiddenName is specified, setting this to true will cause both the hidden field and the element to be submitted. * Defaults to undefined. */ submitValue: undefined, /** * 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.ComboBox({ ... mode: '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.ComboBox({ ... mode: 'local', triggerAction: 'all', lastQuery: '' }); * * @property lastQuery * @type String */ // private initComponent : function(){ Ext.form.ComboBox.superclass.initComponent.call(this); this.addEvents( /** * @event expand * Fires when the dropdown list is expanded * @param {Ext.form.ComboBox} combo This combo box */ 'expand', /** * @event collapse * Fires when the dropdown list is collapsed * @param {Ext.form.ComboBox} combo This combo box */ 'collapse', /** * @event beforeselect * Fires before a list item is selected. Return false to cancel the selection. * @param {Ext.form.ComboBox} combo This combo box * @param {Ext.data.Record} record The data record returned from the underlying store * @param {Number} index The index of the selected item in the dropdown list */ 'beforeselect', /** * @event select * Fires when a list item is selected * @param {Ext.form.ComboBox} combo This combo box * @param {Ext.data.Record} record The data record returned from the underlying store * @param {Number} index The index of the selected item in the dropdown list */ 'select', /** * @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.ComboBox This combo box * query : String The query * forceAll : Boolean True to force "all" query * cancel : Boolean Set to true to cancel the query * */ 'beforequery' ); if(this.transform){ var s = Ext.getDom(this.transform); if(!this.hiddenName){ this.hiddenName = s.name; } if(!this.store){ this.mode = 'local'; var d = [], opts = s.options; for(var i = 0, len = opts.length;i < len; i++){ var o = opts[i], value = (o.hasAttribute ? o.hasAttribute('value') : o.getAttributeNode('value').specified) ? o.value : o.text; if(o.selected && Ext.isEmpty(this.value, true)) { this.value = value; } d.push([value, o.text]); } this.store = new Ext.data.ArrayStore({ idIndex: 0, fields: ['value', 'text'], data : d, autoDestroy: true }); this.valueField = 'value'; this.displayField = 'text'; } s.name = Ext.id(); // wipe out the name in case somewhere else they have a reference if(!this.lazyRender){ this.target = true; this.el = Ext.DomHelper.insertBefore(s, this.autoCreate || this.defaultAutoCreate); this.render(this.el.parentNode, s); } Ext.removeNode(s); } //auto-configure store from local array data else if(this.store){ this.store = Ext.StoreMgr.lookup(this.store); if(this.store.autoCreated){ this.displayField = this.valueField = 'field1'; if(!this.store.expandData){ this.displayField = 'field2'; } this.mode = 'local'; } } this.selectedIndex = -1; if(this.mode == 'local'){ if(!Ext.isDefined(this.initialConfig.queryDelay)){ this.queryDelay = 10; } if(!Ext.isDefined(this.initialConfig.minChars)){ this.minChars = 0; } } }, // private onRender : function(ct, position){ if(this.hiddenName && !Ext.isDefined(this.submitValue)){ this.submitValue = false; } Ext.form.ComboBox.superclass.onRender.call(this, ct, position); if(this.hiddenName){ this.hiddenField = this.el.insertSibling({tag:'input', type:'hidden', name: this.hiddenName, id: (this.hiddenId || Ext.id())}, 'before', true); } if(Ext.isGecko){ this.el.dom.setAttribute('autocomplete', 'off'); } if(!this.lazyInit){ this.initList(); }else{ this.on('focus', this.initList, this, {single: true}); } }, // private initValue : function(){ Ext.form.ComboBox.superclass.initValue.call(this); if(this.hiddenField){ this.hiddenField.value = Ext.value(Ext.isDefined(this.hiddenValue) ? this.hiddenValue : this.value, ''); } }, getParentZIndex : function(){ var zindex; if (this.ownerCt){ this.findParentBy(function(ct){ zindex = parseInt(ct.getPositionEl().getStyle('z-index'), 10); return !!zindex; }); } return zindex; }, getZIndex : function(listParent){ listParent = listParent || Ext.getDom(this.getListParent() || Ext.getBody()); var zindex = parseInt(Ext.fly(listParent).getStyle('z-index'), 10); if(!zindex){ zindex = this.getParentZIndex(); } return (zindex || 12000) + 5; }, // private initList : function(){ if(!this.list){ var cls = 'x-combo-list', listParent = Ext.getDom(this.getListParent() || Ext.getBody()); this.list = new Ext.Layer({ parentEl: listParent, shadow: this.shadow, cls: [cls, this.listClass].join(' '), constrain:false, zindex: this.getZIndex(listParent) }); var lw = this.listWidth || Math.max(this.wrap.getWidth(), this.minListWidth); this.list.setSize(lw, 0); this.list.swallowEvent('mousewheel'); this.assetHeight = 0; if(this.syncFont !== false){ this.list.setStyle('font-size', this.el.getStyle('font-size')); } if(this.title){ this.header = this.list.createChild({cls:cls+'-hd', html: this.title}); this.assetHeight += this.header.getHeight(); } this.innerList = this.list.createChild({cls:cls+'-inner'}); this.mon(this.innerList, 'mouseover', this.onViewOver, this); this.mon(this.innerList, 'mousemove', this.onViewMove, this); this.innerList.setWidth(lw - this.list.getFrameWidth('lr')); if(this.pageSize){ this.footer = this.list.createChild({cls:cls+'-ft'}); this.pageTb = new Ext.PagingToolbar({ store: this.store, pageSize: this.pageSize, renderTo:this.footer }); this.assetHeight += this.footer.getHeight(); } if(!this.tpl){ /** * @cfg {String/Ext.XTemplate} tpl The template string, or {@link Ext.XTemplate} instance to * use to display each item in the dropdown list. The dropdown list is displayed in a * DataView. See {@link #view}. * The default template string is: '<tpl for="."><div class="x-combo-list-item">{' + this.displayField + '}</div></tpl>' * * Override the default value to create custom UI layouts for items in the list. * For example: '<tpl for="."><div ext:qtip="{state}. {nick}" class="x-combo-list-item">{state}</div></tpl>' * * The template must contain one or more substitution parameters using field * names from the Combo's {@link #store Store}. In the example above an * ext:qtip attribute is added to display other fields from the Store. * To preserve the default visual look of list items, add the CSS class name * x-combo-list-item to the template's container element. * Also see {@link #itemSelector} for additional details. */ this.tpl = '{' + this.displayField + '}'; /** * @cfg {String} itemSelector * A simple CSS selector (e.g. div.some-class or span:first-child) that will be * used to determine what nodes the {@link #view Ext.DataView} which handles the dropdown * display will be working with. * Note: this setting is required if a custom XTemplate has been * specified in {@link #tpl} which assigns a class other than 'x-combo-list-item' * to dropdown list items */ } /** * The {@link Ext.DataView DataView} used to display the ComboBox's options. * @type Ext.DataView */ this.view = new Ext.DataView({ applyTo: this.innerList, tpl: this.tpl, singleSelect: true, selectedClass: this.selectedClass, itemSelector: this.itemSelector || '.' + cls + '-item', emptyText: this.listEmptyText, deferEmptyText: false }); this.mon(this.view, { containerclick : this.onViewClick, click : this.onViewClick, scope :this }); this.bindStore(this.store, true); if(this.resizable){ this.resizer = new Ext.Resizable(this.list, { pinned:true, handles:'se' }); this.mon(this.resizer, 'resize', function(r, w, h){ this.maxHeight = h-this.handleHeight-this.list.getFrameWidth('tb')-this.assetHeight; this.listWidth = w; this.innerList.setWidth(w - this.list.getFrameWidth('lr')); this.restrictHeight(); }, this); this[this.pageSize?'footer':'innerList'].setStyle('margin-bottom', this.handleHeight+'px'); } } }, /** * Returns the element used to house this ComboBox's pop-up list. Defaults to the document body. * A custom implementation may be provided as a configuration option if the floating list needs to be rendered * to a different Element. An example might be rendering the list inside a Menu so that clicking * the list does not hide the Menu: var store = new Ext.data.ArrayStore({ autoDestroy: true, fields: ['initials', 'fullname'], data : [ ['FF', 'Fred Flintstone'], ['BR', 'Barney Rubble'] ] }); var combo = new Ext.form.ComboBox({ store: store, displayField: 'fullname', emptyText: 'Select a name...', forceSelection: true, getListParent: function() { return this.el.up('.x-menu'); }, iconCls: 'no-icon', //use iconCls if placing within menu to shift to right side of menu mode: 'local', selectOnFocus: true, triggerAction: 'all', typeAhead: true, width: 135 }); var menu = new Ext.menu.Menu({ id: 'mainMenu', items: [ combo // A Field in a Menu ] }); */ getListParent : function() { return document.body; }, /** * Returns the store associated with this combo. * @return {Ext.data.Store} The store */ getStore : function(){ return this.store; }, // private bindStore : function(store, initial){ if(this.store && !initial){ if(this.store !== store && this.store.autoDestroy){ this.store.destroy(); }else{ this.store.un('beforeload', this.onBeforeLoad, this); this.store.un('load', this.onLoad, this); this.store.un('exception', this.collapse, this); } if(!store){ this.store = null; if(this.view){ this.view.bindStore(null); } if(this.pageTb){ this.pageTb.bindStore(null); } } } if(store){ if(!initial) { this.lastQuery = null; if(this.pageTb) { this.pageTb.bindStore(store); } } this.store = Ext.StoreMgr.lookup(store); this.store.on({ scope: this, beforeload: this.onBeforeLoad, load: this.onLoad, exception: this.collapse }); if(this.view){ this.view.bindStore(store); } } }, reset : function(){ if(this.clearFilterOnReset && this.mode == 'local'){ this.store.clearFilter(); } Ext.form.ComboBox.superclass.reset.call(this); }, // private initEvents : function(){ Ext.form.ComboBox.superclass.initEvents.call(this); /** * @property keyNav * @type Ext.KeyNav * A {@link Ext.KeyNav KeyNav} object which handles navigation keys for this ComboBox. This performs actions * based on keystrokes typed when the input field is focused. * After the ComboBox has been rendered, you may override existing navigation key functionality, * or add your own based upon key names as specified in the {@link Ext.KeyNav KeyNav} class. * The function is executed in the scope (this reference of the ComboBox. Example: myCombo.keyNav.esc = function(e) { // Override ESC handling function this.collapse(); // Standard behaviour of Ext's ComboBox. this.setValue(this.startValue); // We reset to starting value on ESC }; myCombo.keyNav.tab = function() { // Override TAB handling function this.onViewClick(false); // Select the currently highlighted row }; */ this.keyNav = new Ext.KeyNav(this.el, { "up" : function(e){ this.inKeyMode = true; this.selectPrev(); }, "down" : function(e){ if(!this.isExpanded()){ this.onTriggerClick(); }else{ this.inKeyMode = true; this.selectNext(); } }, "enter" : function(e){ this.onViewClick(); }, "esc" : function(e){ this.collapse(); }, "tab" : function(e){ if (this.forceSelection === true) { this.collapse(); } else { this.onViewClick(false); } return true; }, scope : this, doRelay : function(e, h, hname){ if(hname == 'down' || this.scope.isExpanded()){ // this MUST be called before ComboBox#fireKey() var relay = Ext.KeyNav.prototype.doRelay.apply(this, arguments); if(!Ext.isIE && Ext.EventManager.useKeydown){ // call Combo#fireKey() for browsers which use keydown event (except IE) this.scope.fireKey(e); } return relay; } return true; }, forceKeyDown : true, defaultEventAction: 'stopEvent' }); this.queryDelay = Math.max(this.queryDelay || 10, this.mode == 'local' ? 10 : 250); this.dqTask = new Ext.util.DelayedTask(this.initQuery, this); if(this.typeAhead){ this.taTask = new Ext.util.DelayedTask(this.onTypeAhead, this); } if(!this.enableKeyEvents){ this.mon(this.el, 'keyup', this.onKeyUp, this); } }, // private onDestroy : function(){ if (this.dqTask){ this.dqTask.cancel(); this.dqTask = null; } this.bindStore(null); Ext.destroy( this.resizer, this.view, this.pageTb, this.list ); Ext.destroyMembers(this, 'hiddenField'); Ext.form.ComboBox.superclass.onDestroy.call(this); }, // private fireKey : function(e){ if (!this.isExpanded()) { Ext.form.ComboBox.superclass.fireKey.call(this, e); } }, // private onResize : function(w, h){ Ext.form.ComboBox.superclass.onResize.apply(this, arguments); if(!isNaN(w) && this.isVisible() && this.list){ this.doResize(w); }else{ this.bufferSize = w; } }, doResize: function(w){ if(!Ext.isDefined(this.listWidth)){ var lw = Math.max(w, this.minListWidth); this.list.setWidth(lw); this.innerList.setWidth(lw - this.list.getFrameWidth('lr')); } }, // private onEnable : function(){ Ext.form.ComboBox.superclass.onEnable.apply(this, arguments); if(this.hiddenField){ this.hiddenField.disabled = false; } }, // private onDisable : function(){ Ext.form.ComboBox.superclass.onDisable.apply(this, arguments); if(this.hiddenField){ this.hiddenField.disabled = true; } }, // private onBeforeLoad : function(){ if(!this.hasFocus){ return; } this.innerList.update(this.loadingText ? ''+this.loadingText+'' : ''); this.restrictHeight(); this.selectedIndex = -1; }, // private onLoad : function(){ if(!this.hasFocus){ return; } if(this.store.getCount() > 0 || this.listEmptyText){ this.expand(); this.restrictHeight(); if(this.lastQuery == this.allQuery){ if(this.editable){ this.el.dom.select(); } if(this.autoSelect !== false && !this.selectByValue(this.value, true)){ this.select(0, true); } }else{ if(this.autoSelect !== false){ this.selectNext(); } if(this.typeAhead && this.lastKey != Ext.EventObject.BACKSPACE && this.lastKey != Ext.EventObject.DELETE){ this.taTask.delay(this.typeAheadDelay); } } }else{ this.collapse(); } }, // private onTypeAhead : function(){ if(this.store.getCount() > 0){ var r = this.store.getAt(0); var newValue = r.data[this.displayField]; var len = newValue.length; var selStart = this.getRawValue().length; if(selStart != len){ this.setRawValue(newValue); this.selectText(selStart, newValue.length); } } }, // private assertValue : function(){ var val = this.getRawValue(), rec; if(this.valueField && Ext.isDefined(this.value)){ rec = this.findRecord(this.valueField, this.value); } if(!rec || rec.get(this.displayField) != val){ rec = this.findRecord(this.displayField, val); } if(!rec && this.forceSelection){ if(val.length > 0 && val != this.emptyText){ this.el.dom.value = Ext.value(this.lastSelectionText, ''); this.applyEmptyText(); }else{ this.clearValue(); } }else{ if(rec && this.valueField){ // onSelect may have already set the value and by doing so // set the display field properly. Let's not wipe out the // valueField here by just sending the displayField. if (this.value == val){ return; } val = rec.get(this.valueField || this.displayField); } this.setValue(val); } }, // private onSelect : function(record, index){ if(this.fireEvent('beforeselect', this, record, index) !== false){ this.setValue(record.data[this.valueField || this.displayField]); this.collapse(); this.fireEvent('select', this, record, index); } }, // inherit docs getName: function(){ var hf = this.hiddenField; return hf && hf.name ? hf.name : this.hiddenName || Ext.form.ComboBox.superclass.getName.call(this); }, /** * Returns the currently selected field value or empty string if no value is set. * @return {String} value The selected value */ getValue : function(){ if(this.valueField){ return Ext.isDefined(this.value) ? this.value : ''; }else{ return Ext.form.ComboBox.superclass.getValue.call(this); } }, /** * Clears any text/value currently set in the field */ clearValue : function(){ if(this.hiddenField){ this.hiddenField.value = ''; } this.setRawValue(''); this.lastSelectionText = ''; this.applyEmptyText(); this.value = ''; }, /** * Sets the specified value into the field. If the value finds a match, the corresponding record text * will be displayed in the field. If the value does not match the data value of an existing item, * and the valueNotFoundText config option is defined, it will be displayed as the default field text. * Otherwise the field will be blank (although the value will still be set). * @param {String} value The value to match * @return {Ext.form.Field} this */ setValue : function(v){ var text = v; if(this.valueField){ var r = this.findRecord(this.valueField, v); if(r){ text = r.data[this.displayField]; }else if(Ext.isDefined(this.valueNotFoundText)){ text = this.valueNotFoundText; } } this.lastSelectionText = text; if(this.hiddenField){ this.hiddenField.value = Ext.value(v, ''); } Ext.form.ComboBox.superclass.setValue.call(this, text); this.value = v; return this; }, // private findRecord : function(prop, value){ var record; if(this.store.getCount() > 0){ this.store.each(function(r){ if(r.data[prop] == value){ record = r; return false; } }); } return record; }, // private onViewMove : function(e, t){ this.inKeyMode = false; }, // private onViewOver : function(e, t){ if(this.inKeyMode){ // prevent key nav and mouse over conflicts return; } var item = this.view.findItemFromChild(t); if(item){ var index = this.view.indexOf(item); this.select(index, false); } }, // private onViewClick : function(doFocus){ var index = this.view.getSelectedIndexes()[0], s = this.store, r = s.getAt(index); if(r){ this.onSelect(r, index); }else { this.collapse(); } if(doFocus !== false){ this.el.focus(); } }, // private restrictHeight : function(){ this.innerList.dom.style.height = ''; var inner = this.innerList.dom, pad = this.list.getFrameWidth('tb') + (this.resizable ? this.handleHeight : 0) + this.assetHeight, h = Math.max(inner.clientHeight, inner.offsetHeight, inner.scrollHeight), ha = this.getPosition()[1]-Ext.getBody().getScroll().top, hb = Ext.lib.Dom.getViewHeight()-ha-this.getSize().height, space = Math.max(ha, hb, this.minHeight || 0)-this.list.shadowOffset-pad-5; h = Math.min(h, space, this.maxHeight); this.innerList.setHeight(h); this.list.beginUpdate(); this.list.setHeight(h+pad); this.list.alignTo.apply(this.list, [this.el].concat(this.listAlign)); this.list.endUpdate(); }, /** * Returns true if the dropdown list is expanded, else false. */ isExpanded : function(){ return this.list && this.list.isVisible(); }, /** * Select an item in the dropdown list by its data value. This function does NOT cause the select event to fire. * The store must be loaded and the list expanded for this function to work, otherwise use setValue. * @param {String} value The data value of the item to select * @param {Boolean} scrollIntoView False to prevent the dropdown list from autoscrolling to display the * selected item if it is not currently in view (defaults to true) * @return {Boolean} True if the value matched an item in the list, else false */ selectByValue : function(v, scrollIntoView){ if(!Ext.isEmpty(v, true)){ var r = this.findRecord(this.valueField || this.displayField, v); if(r){ this.select(this.store.indexOf(r), scrollIntoView); return true; } } return false; }, /** * Select an item in the dropdown list by its numeric index in the list. This function does NOT cause the select event to fire. * The store must be loaded and the list expanded for this function to work, otherwise use setValue. * @param {Number} index The zero-based index of the list item to select * @param {Boolean} scrollIntoView False to prevent the dropdown list from autoscrolling to display the * selected item if it is not currently in view (defaults to true) */ select : function(index, scrollIntoView){ this.selectedIndex = index; this.view.select(index); if(scrollIntoView !== false){ var el = this.view.getNode(index); if(el){ this.innerList.scrollChildIntoView(el, false); } } }, // private selectNext : function(){ var ct = this.store.getCount(); if(ct > 0){ if(this.selectedIndex == -1){ this.select(0); }else if(this.selectedIndex < ct-1){ this.select(this.selectedIndex+1); } } }, // private selectPrev : function(){ var ct = this.store.getCount(); if(ct > 0){ if(this.selectedIndex == -1){ this.select(0); }else if(this.selectedIndex !== 0){ this.select(this.selectedIndex-1); } } }, // private onKeyUp : function(e){ var k = e.getKey(); if(this.editable !== false && this.readOnly !== true && (k == e.BACKSPACE || !e.isSpecialKey())){ this.lastKey = k; this.dqTask.delay(this.queryDelay); } Ext.form.ComboBox.superclass.onKeyUp.call(this, e); }, // private validateBlur : function(){ return !this.list || !this.list.isVisible(); }, // private initQuery : function(){ this.doQuery(this.getRawValue()); }, // private beforeBlur : function(){ this.assertValue(); }, // private postBlur : function(){ Ext.form.ComboBox.superclass.postBlur.call(this); this.collapse(); this.inKeyMode = false; }, /** * Execute 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} query The SQL query to execute * @param {Boolean} forceAll 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 (defaults to false) */ doQuery : function(q, forceAll){ q = Ext.isEmpty(q) ? '' : q; var qe = { query: q, forceAll: forceAll, combo: this, cancel:false }; if(this.fireEvent('beforequery', qe)===false || qe.cancel){ return false; } q = qe.query; forceAll = qe.forceAll; if(forceAll === true || (q.length >= this.minChars)){ if(this.lastQuery !== q){ this.lastQuery = q; if(this.mode == 'local'){ this.selectedIndex = -1; if(forceAll){ this.store.clearFilter(); }else{ this.store.filter(this.displayField, q); } this.onLoad(); }else{ this.store.baseParams[this.queryParam] = q; this.store.load({ params: this.getParams(q) }); this.expand(); } }else{ this.selectedIndex = -1; this.onLoad(); } } }, // private getParams : function(q){ var params = {}, paramNames = this.store.paramNames; if(this.pageSize){ params[paramNames.start] = 0; params[paramNames.limit] = this.pageSize; } return params; }, /** * Hides the dropdown list if it is currently expanded. Fires the {@link #collapse} event on completion. */ collapse : function(){ if(!this.isExpanded()){ return; } this.list.hide(); Ext.getDoc().un('mousewheel', this.collapseIf, this); Ext.getDoc().un('mousedown', this.collapseIf, this); this.fireEvent('collapse', this); }, // private collapseIf : function(e){ if(!this.isDestroyed && !e.within(this.wrap) && !e.within(this.list)){ this.collapse(); } }, /** * Expands the dropdown list if it is currently hidden. Fires the {@link #expand} event on completion. */ expand : function(){ if(this.isExpanded() || !this.hasFocus){ return; } if(this.title || this.pageSize){ this.assetHeight = 0; if(this.title){ this.assetHeight += this.header.getHeight(); } if(this.pageSize){ this.assetHeight += this.footer.getHeight(); } } if(this.bufferSize){ this.doResize(this.bufferSize); delete this.bufferSize; } this.list.alignTo.apply(this.list, [this.el].concat(this.listAlign)); // zindex can change, re-check it and set it if necessary this.list.setZIndex(this.getZIndex()); this.list.show(); if(Ext.isGecko2){ this.innerList.setOverflow('auto'); // necessary for FF 2.0/Mac } this.mon(Ext.getDoc(), { scope: this, mousewheel: this.collapseIf, mousedown: this.collapseIf }); this.fireEvent('expand', this); }, /** * @method onTriggerClick * @hide */ // private // Implements the default empty TriggerField.onTriggerClick function onTriggerClick : function(){ if(this.readOnly || this.disabled){ return; } if(this.isExpanded()){ this.collapse(); this.el.focus(); }else { this.onFocus({}); if(this.triggerAction == 'all') { this.doQuery(this.allQuery, true); } else { this.doQuery(this.getRawValue()); } this.el.focus(); } } /** * @hide * @method autoSize */ /** * @cfg {Boolean} grow @hide */ /** * @cfg {Number} growMin @hide */ /** * @cfg {Number} growMax @hide */ }); Ext.reg('combo', Ext.form.ComboBox);