Subversion Repositories eFlore/Applications.cel

/*

 * Ext JS Library 2.0.2

 * Copyright(c) 2006-2008, Ext JS, LLC.

 * licensing@extjs.com

 *

 * http://extjs.com/license

 */

/**

 * @class Ext.form.ComboBox

 * @extends Ext.form.TriggerField

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

 * @constructor

 * Create a new ComboBox.

 * @param {Object} config Configuration options

 */

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 a {@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 Ext.Editor, defaults to false).

     */

    /**

     * @cfg {Boolean/Object} autoCreate A DomHelper element spec, or true for a default element spec (defaults to:

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

     */

    /**

     * @cfg {Ext.data.Store} store The data store to which this combo is bound (defaults to undefined)

     */

    /**

     * @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 in pixels of the dropdown list (defaults to the width of the ComboBox field)

     */

    /**

     * @cfg {String} displayField The underlying data field name to bind to this ComboBox (defaults to undefined if

     * mode = 'remote' or 'text' if transforming a select)

     */

    /**

     * @cfg {String} valueField The underlying data value name to bind to this ComboBox (defaults to undefined if

     * mode = 'remote' or 'value' if transforming a select) Note: use of a valueField requires the user to make a selection

     * in order for a value to be mapped.

     */

    /**

     * @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.

     */

    /**

     * @cfg {String} hiddenId If {@link #hiddenName} is specified, hiddenId can also be provided to give the hidden field

     * a unique id (defaults to the hiddenName).  The hiddenId and combo {@link #id} should be different, since no two DOM

     * nodes should share the same id.

     */

    /**

     * @cfg {String} listClass CSS class to apply to 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} 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 <b>appended</b> 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} listAlign A valid anchor position value. See {@link Ext.Element#alignTo} for details on supported

     * anchor positions (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 field is activated.  Use 'all' to run the

     * query specified by the allQuery config option (defaults to 'query')

     */

    triggerAction: 'query',

    /**

     * @cfg {Number} minChars The minimum number of characters the user must type before autocomplete and typeahead activate

     * (defaults to 4 if remote or 0 if local, does not apply if editable = false)

     */

    minChars : 4,

    /**

     * @cfg {Boolean} typeAhead True to populate and autoselect the remainder of the text being typed after a configurable

     * delay (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 mode = 'remote' or 10 if mode = 'local')

     */

    queryDelay: 500,

    /**

     * @cfg {Number} pageSize If greater than 0, a paging toolbar is displayed in the footer of the dropdown list and the

     * filter queries will execute with page start and limit parameters.  Only applies when 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 editable = true (defaults to false)

     */

    selectOnFocus:false,

    /**

     * @cfg {String} queryParam Name of the query 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 mode = 'remote' (defaults to 'Loading...')

     */

    loadingText: 'Loading...',

    /**

     * @cfg {Boolean} resizable True to add a resize handle to the bottom of the dropdown list (defaults to false)

     */

    resizable: false,

    /**

     * @cfg {Number} handleHeight The height in pixels of the dropdown list resize handle if resizable = true (defaults to 8)

     */

    handleHeight : 8,

    /**

     * @cfg {Boolean} editable False to prevent the user from typing text directly into the field, just like a

     * traditional select (defaults to true)

     */

    editable: true,

    /**

     * @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 Set to 'local' if the ComboBox loads local data (defaults to 'remote' which loads from the server)

     */

    mode: 'remote',

    /**

     * @cfg {Number} minListWidth The minimum width of the dropdown list in pixels (defaults to 70, will be ignored if

     * 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 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)

     */

    /**

     * @cfg {Boolean} lazyInit True to not initialize the list for this combo until the field is focused. (defaults to true)

     */

    lazyInit : true,

    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:<ul>

             * <li><code>combo</code> : Ext.form.ComboBox <div class="sub-desc">This combo box</div></li>

             * <li><code>query</code> : String <div class="sub-desc">The query</div></li>

             * <li><code>forceAll</code> : Boolean <div class="sub-desc">True to force "all" query</div></li>

             * <li><code>cancel</code> : Boolean <div class="sub-desc">Set to true to cancel the query</div></li>

             * </ul>

             */

            'beforequery'

        );

        if(this.transform){

            this.allowDomMove = false;

            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];

                    var value = (Ext.isIE ? o.getAttributeNode('value').specified : o.hasAttribute('value')) ? o.value : o.text;

                    if(o.selected) {

                        this.value = value;

                    }

                    d.push([value, o.text]);

                }

                this.store = new Ext.data.SimpleStore({

                    'id': 0,

                    fields: ['value', 'text'],

                    data : d

                });

                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);

                Ext.removeNode(s); // remove it

                this.render(this.el.parentNode);

            }else{

                Ext.removeNode(s); // remove it

            }

        }

        this.selectedIndex = -1;

        if(this.mode == 'local'){

            if(this.initialConfig.queryDelay === undefined){

                this.queryDelay = 10;

            }

            if(this.initialConfig.minChars === undefined){

                this.minChars = 0;

            }

        }

    },

    // private

    onRender : function(ct, position){

        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||this.hiddenName)},

                    'before', true);

            this.hiddenField.value =

                this.hiddenValue !== undefined ? this.hiddenValue :

                this.value !== undefined ? this.value : '';

            // prevent input submission

            this.el.dom.removeAttribute('name');

        }

        if(Ext.isGecko){

            this.el.dom.setAttribute('autocomplete', 'off');

        }

        if(!this.lazyInit){

            this.initList();

        }else{

            this.on('focus', this.initList, this, {single: true});

        }

        if(!this.editable){

            this.editable = true;

            this.setEditable(false);

        }

    },

    initList : function(){

        if(!this.list){

            var cls = 'x-combo-list';

            this.list = new Ext.Layer({

                shadow: this.shadow, cls: [cls, this.listClass].join(' '), constrain:false

            });

            var lw = this.listWidth || Math.max(this.wrap.getWidth(), this.minListWidth);

            this.list.setWidth(lw);

            this.list.swallowEvent('mousewheel');

            this.assetHeight = 0;

            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.innerList.on('mouseover', this.onViewOver, this);

            this.innerList.on('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. Use

			    * this to create custom UI layouts for items in the list.

			    * <p>

			    * If you wish to preserve the default visual look of list items, add the CSS

			    * class name <pre>x-combo-list-item</pre> to the template's container element.

			    * <p>

			    * <b>The template must contain one or more substitution parameters using field

			    * names from the Combo's</b> {@link #store Store}. An example of a custom template

			    * would be adding an <pre>ext:qtip</pre> attribute which might display other fields

			    * from the Store.

			    * <p>

			    * The dropdown list is displayed in a DataView. See {@link Ext.DataView} for details.

			    */

                this.tpl = '<tpl for="."><div class="'+cls+'-item">{' + this.displayField + '}</div></tpl>';

            }

		    /**

		    * 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'

            });

            this.view.on('click', this.onViewClick, this);

            this.bindStore(this.store, true);

            if(this.resizable){

                this.resizer = new Ext.Resizable(this.list,  {

                   pinned:true, handles:'se'

                });

                this.resizer.on('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');

            }

        }

    },

    // private

    bindStore : function(store, initial){

        if(this.store && !initial){

            this.store.un('beforeload', this.onBeforeLoad, this);

            this.store.un('load', this.onLoad, this);

            this.store.un('loadexception', this.collapse, this);

            if(!store){

                this.store = null;

                if(this.view){

                    this.view.setStore(null);

                }

            }

        }

        if(store){

            this.store = Ext.StoreMgr.lookup(store);

            this.store.on('beforeload', this.onBeforeLoad, this);

            this.store.on('load', this.onLoad, this);

            this.store.on('loadexception', this.collapse, this);

            if(this.view){

                this.view.setStore(store);

            }

        }

    },

    // private

    initEvents : function(){

        Ext.form.ComboBox.superclass.initEvents.call(this);

        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();

                this.delayedCheck = true;

				this.unsetDelayCheck.defer(10, this);

            },

            "esc" : function(e){

                this.collapse();

            },

            "tab" : function(e){

                this.onViewClick(false);

                return true;

            },

            scope : this,

            doRelay : function(foo, bar, hname){

                if(hname == 'down' || this.scope.isExpanded()){

                   return Ext.KeyNav.prototype.doRelay.apply(this, arguments);

                }

                return true;

            },

            forceKeyDown : true

        });

        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.editable !== false){

            this.el.on("keyup", this.onKeyUp, this);

        }

        if(this.forceSelection){

            this.on('blur', this.doForce, this);

        }

    },

    onDestroy : function(){

        if(this.view){

            this.view.el.removeAllListeners();

            this.view.el.remove();

            this.view.purgeListeners();

        }

        if(this.list){

            this.list.destroy();

        }

        this.bindStore(null);

        Ext.form.ComboBox.superclass.onDestroy.call(this);

    },

	unsetDelayCheck : function(){

		delete this.delayedCheck;

	},

    // private

    fireKey : function(e){

        if(e.isNavKeyPress() && !this.isExpanded() && !this.delayedCheck){

            this.fireEvent("specialkey", this, e);

        }

    },

    // private

    onResize: function(w, h){

        Ext.form.ComboBox.superclass.onResize.apply(this, arguments);

        if(this.list && this.listWidth === undefined){

            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;

        }

    },

    /**

     * Allow or prevent the user from directly editing the field text.  If false is passed,

     * the user will only be able to select from the items defined in the dropdown list.  This method

     * is the runtime equivalent of setting the 'editable' config option at config time.

     * @param {Boolean} value True to allow the user to directly edit the field text

     */

    setEditable : function(value){

        if(value == this.editable){

            return;

        }

        this.editable = value;

        if(!value){

            this.el.dom.setAttribute('readOnly', true);

            this.el.on('mousedown', this.onTriggerClick,  this);

            this.el.addClass('x-combo-noedit');

        }else{

            this.el.dom.setAttribute('readOnly', false);

            this.el.un('mousedown', this.onTriggerClick,  this);

            this.el.removeClass('x-combo-noedit');

        }

    },

    // private

    onBeforeLoad : function(){

        if(!this.hasFocus){

            return;

        }

        this.innerList.update(this.loadingText ?

               '<div class="loading-indicator">'+this.loadingText+'</div>' : '');

        this.restrictHeight();

        this.selectedIndex = -1;

    },

    // private

    onLoad : function(){

        if(!this.hasFocus){

            return;

        }

        if(this.store.getCount() > 0){

            this.expand();

            this.restrictHeight();

            if(this.lastQuery == this.allQuery){

                if(this.editable){

                    this.el.dom.select();

                }

                if(!this.selectByValue(this.value, true)){

                    this.select(0, true);

                }

            }else{

                this.selectNext();

                if(this.typeAhead && this.lastKey != Ext.EventObject.BACKSPACE && this.lastKey != Ext.EventObject.DELETE){

                    this.taTask.delay(this.typeAheadDelay);

                }

            }

        }else{

            this.onEmptyResults();

        }

        //this.el.focus();

    },

    // 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

    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);

        }

    },

    /**

     * 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 typeof this.value != 'undefined' ? 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

     */

    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(this.valueNotFoundText !== undefined){

                text = this.valueNotFoundText;

            }

        }

        this.lastSelectionText = text;

        if(this.hiddenField){

            this.hiddenField.value = v;

        }

        Ext.form.ComboBox.superclass.setValue.call(this, text);

        this.value = v;

    },

    // 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];

        var r = this.store.getAt(index);

        if(r){

            this.onSelect(r, index);

        }

        if(doFocus !== false){

            this.el.focus();

        }

    },

    // private

	restrictHeight : function(){

        this.innerList.dom.style.height = '';

        var inner = this.innerList.dom;

        var pad = this.list.getFrameWidth('tb')+(this.resizable?this.handleHeight:0)+this.assetHeight;

        var h = Math.max(inner.clientHeight, inner.offsetHeight, inner.scrollHeight);

        var ha = this.getPosition()[1]-Ext.getBody().getScroll().top;

        var hb = Ext.lib.Dom.getViewHeight()-ha-this.getSize().height;

        var space = Math.max(ha, hb, this.minHeight || 0)-this.list.shadow.offset-pad-2;

        h = Math.min(h, space, this.maxHeight);

        this.innerList.setHeight(h);

        this.list.beginUpdate();

        this.list.setHeight(h+pad);

        this.list.alignTo(this.el, this.listAlign);

        this.list.endUpdate();

    },

    // private

    onEmptyResults : function(){

        this.collapse();

    },

    /**

     * 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(v !== undefined && v !== null){

            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){

        if(this.editable !== false && !e.isSpecialKey()){

            this.lastKey = e.getKey();

            this.dqTask.delay(this.queryDelay);

        }

    },

    // private

    validateBlur : function(){

        return !this.list || !this.list.isVisible();

    },

    // private

    initQuery : function(){

        this.doQuery(this.getRawValue());

    },

    // private

    doForce : function(){

        if(this.el.dom.value.length > 0){

            this.el.dom.value =

                this.lastSelectionText === undefined ? '' : this.lastSelectionText;

            this.applyEmptyText();

        }

    },

    /**

     * Execute a query to filter the dropdown list.  Fires the 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 minChars config option.  It also clears any filter previously

     * saved in the current store (defaults to false)

     */

    doQuery : function(q, forceAll){

        if(q === undefined || q === null){

            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 p = {};

        //p[this.queryParam] = q;

        if(this.pageSize){

            p.start = 0;

            p.limit = this.pageSize;

        }

        return p;

    },

    /**

     * Hides the dropdown list if it is currently expanded. Fires the '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(!e.within(this.wrap) && !e.within(this.list)){

            this.collapse();

        }

    },

    /**

     * Expands the dropdown list if it is currently hidden. Fires the 'expand' event on completion.

     */

    expand : function(){

        if(this.isExpanded() || !this.hasFocus){

            return;

        }

        this.list.alignTo(this.wrap, this.listAlign);

        this.list.show();

        this.innerList.setOverflow('auto'); // necessary for FF 2.0/Mac

        Ext.getDoc().on('mousewheel', this.collapseIf, this);

        Ext.getDoc().on('mousedown', this.collapseIf, this);

        this.fireEvent('expand', this);

    },

    // private

    // Implements the default empty TriggerField.onTriggerClick function

    onTriggerClick : function(){

        if(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);