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/*
* Ext JS Library 0.20
* 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, {
lazyInit: false,
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;
}
}
});