Subversion Repositories eFlore/Applications.cel

Rev

Go to most recent revision | Blame | Last modification | View Log | RSS feed

/*
 * Ext JS Library 2.0.2
 * Copyright(c) 2006-2008, Ext JS, LLC.
 * licensing@extjs.com
 * 
 * http://extjs.com/license
 */

/**
 * Makes a ComboBox more closely mimic an HTML SELECT.  Supports clicking and dragging
 * through the list, with item selection occurring when the mouse button is released.
 * When used will automatically set {@link #editable} to false and call {@link Ext.Element#unselectable}
 * on inner elements.  Re-enabling editable after calling this will NOT work.
 *
 * @author Corey Gilmore
 * http://extjs.com/forum/showthread.php?t=6392
 * 
 * @history 2007-07-08 jvs
 * Slight mods for Ext 2.0
 */
Ext.ux.SelectBox = function(config){
        this.searchResetDelay = 1000;
        config = config || {};
        config = Ext.apply(config || {}, {
                editable: false,
                forceSelection: true,
                rowHeight: false,
                lastSearchTerm: false,
        triggerAction: 'all',
        mode: 'local'
    });

        Ext.ux.SelectBox.superclass.constructor.apply(this, arguments);

        this.lastSelectedIndex = this.selectedIndex || 0;
};

Ext.extend(Ext.ux.SelectBox, Ext.form.ComboBox, {

        initEvents : function(){
                Ext.ux.SelectBox.superclass.initEvents.apply(this, arguments);
                // you need to use keypress to capture upper/lower case and shift+key, but it doesn't work in IE
                this.el.on('keydown', this.keySearch, this, true);
                this.cshTask = new Ext.util.DelayedTask(this.clearSearchHistory, this);
        },

        keySearch : function(e, target, options) {
                var raw = e.getKey();
                var key = String.fromCharCode(raw);
                var startIndex = 0;

                if( !this.store.getCount() ) {
                        return;
                }

                switch(raw) {
                        case Ext.EventObject.HOME:
                                e.stopEvent();
                                this.selectFirst();
                                return;

                        case Ext.EventObject.END:
                                e.stopEvent();
                                this.selectLast();
                                return;

                        case Ext.EventObject.PAGEDOWN:
                                this.selectNextPage();
                                e.stopEvent();
                                return;

                        case Ext.EventObject.PAGEUP:
                                this.selectPrevPage();
                                e.stopEvent();
                                return;
                }

                // skip special keys other than the shift key
                if( (e.hasModifier() && !e.shiftKey) || e.isNavKeyPress() || e.isSpecialKey() ) {
                        return;
                }
                if( this.lastSearchTerm == key ) {
                        startIndex = this.lastSelectedIndex;
                }
                this.search(this.displayField, key, startIndex);
                this.cshTask.delay(this.searchResetDelay);
        },

        onRender : function(ct, position) {
                this.store.on('load', this.calcRowsPerPage, this);
                Ext.ux.SelectBox.superclass.onRender.apply(this, arguments);
                if( this.mode == 'local' ) {
                        this.calcRowsPerPage();
                }
        },

        onSelect : function(record, index, skipCollapse){
                if(this.fireEvent('beforeselect', this, record, index) !== false){
                        this.setValue(record.data[this.valueField || this.displayField]);
                        if( !skipCollapse ) {
                                this.collapse();
                        }
                        this.lastSelectedIndex = index + 1;
                        this.fireEvent('select', this, record, index);
                }
        },

        render : function(ct) {
                Ext.ux.SelectBox.superclass.render.apply(this, arguments);
                if( Ext.isSafari ) {
                        this.el.swallowEvent('mousedown', true);
                }
                this.el.unselectable();
                this.innerList.unselectable();
                this.trigger.unselectable();
                this.innerList.on('mouseup', function(e, target, options) {
                        if( target.id && target.id == this.innerList.id ) {
                                return;
                        }
                        this.onViewClick();
                }, this);

                this.innerList.on('mouseover', function(e, target, options) {
                        if( target.id && target.id == this.innerList.id ) {
                                return;
                        }
                        this.lastSelectedIndex = this.view.getSelectedIndexes()[0] + 1;
                        this.cshTask.delay(this.searchResetDelay);
                }, this);

                this.trigger.un('click', this.onTriggerClick, this);
                this.trigger.on('mousedown', function(e, target, options) {
                        e.preventDefault();
                        this.onTriggerClick();
                }, this);

                this.on('collapse', function(e, target, options) {
                        Ext.getDoc().un('mouseup', this.collapseIf, this);
                }, this, true);

                this.on('expand', function(e, target, options) {
                        Ext.getDoc().on('mouseup', this.collapseIf, this);
                }, this, true);
        },

        clearSearchHistory : function() {
                this.lastSelectedIndex = 0;
                this.lastSearchTerm = false;
        },

        selectFirst : function() {
                this.focusAndSelect(this.store.data.first());
        },

        selectLast : function() {
                this.focusAndSelect(this.store.data.last());
        },

        selectPrevPage : function() {
                if( !this.rowHeight ) {
                        return;
                }
                var index = Math.max(this.selectedIndex-this.rowsPerPage, 0);
                this.focusAndSelect(this.store.getAt(index));
        },

        selectNextPage : function() {
                if( !this.rowHeight ) {
                        return;
                }
                var index = Math.min(this.selectedIndex+this.rowsPerPage, this.store.getCount() - 1);
                this.focusAndSelect(this.store.getAt(index));
        },

        search : function(field, value, startIndex) {
                field = field || this.displayField;
                this.lastSearchTerm = value;
                var index = this.store.find.apply(this.store, arguments);
                if( index !== -1 ) {
                        this.focusAndSelect(index);
                }
        },

        focusAndSelect : function(record) {
                var index = typeof record === 'number' ? record : this.store.indexOf(record);
                this.select(index, this.isExpanded());
                this.onSelect(this.store.getAt(record), index, this.isExpanded());
        },

        calcRowsPerPage : function() {
                if( this.store.getCount() ) {
                        this.rowHeight = Ext.fly(this.view.getNode(0)).getHeight();
                        this.rowsPerPage = this.maxHeight / this.rowHeight;
                } else {
                        this.rowHeight = false;
                }
        }

});