527 lines
18 KiB
JavaScript
527 lines
18 KiB
JavaScript
/*
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* jQuery UI selectmenu
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*
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* Copyright (c) 2009 AUTHORS.txt (http://jqueryui.com/about)
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* Dual licensed under the MIT (MIT-LICENSE.txt)
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* and GPL (GPL-LICENSE.txt) licenses.
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*
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* http://docs.jquery.com/UI
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*/
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(function($) {
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$.widget("ui.selectmenu", {
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_init: function() {
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var self = this, o = this.options;
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//quick array of button and menu id's
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this.ids = [this.element.attr('id') + '-' + 'button', this.element.attr('id') + '-' + 'menu'];
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//define safe mouseup for future toggling
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this._safemouseup = true;
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//create menu button wrapper
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this.newelement = $('<a class="'+ this.widgetBaseClass +' ui-widget ui-state-default ui-corner-all" id="'+this.ids[0]+'" role="button" href="#" aria-haspopup="true" aria-owns="'+this.ids[1]+'"></a>')
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.insertAfter(this.element);
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//transfer tabindex
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var tabindex = this.element.attr('tabindex');
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if(tabindex){ this.newelement.attr('tabindex', tabindex); }
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//save reference to select in data for ease in calling methods
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this.newelement.data('selectelement', this.element);
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//menu icon
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this.selectmenuIcon = $('<span class="'+ this.widgetBaseClass +'-icon ui-icon"></span>')
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.prependTo(this.newelement)
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.addClass( (o.style == "popup")? 'ui-icon-triangle-2-n-s' : 'ui-icon-triangle-1-s' );
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//make associated form label trigger focus
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$('label[for='+this.element.attr('id')+']')
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.attr('for', this.ids[0])
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.bind('click', function(){
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self.newelement[0].focus();
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return false;
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});
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//click toggle for menu visibility
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this.newelement
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.bind('mousedown', function(event){
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self._toggle(event);
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//make sure a click won't open/close instantly
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if(o.style == "popup"){
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self._safemouseup = false;
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setTimeout(function(){self._safemouseup = true;}, 300);
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}
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return false;
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})
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.bind('click',function(){
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return false;
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})
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.keydown(function(event){
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var ret = true;
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switch (event.keyCode) {
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case $.ui.keyCode.ENTER:
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ret = true;
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break;
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case $.ui.keyCode.SPACE:
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ret = false;
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self._toggle(event);
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break;
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case $.ui.keyCode.UP:
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case $.ui.keyCode.LEFT:
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ret = false;
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self._moveSelection(-1);
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break;
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case $.ui.keyCode.DOWN:
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case $.ui.keyCode.RIGHT:
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ret = false;
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self._moveSelection(1);
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break;
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case $.ui.keyCode.TAB:
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ret = true;
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break;
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default:
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ret = false;
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self._typeAhead(event.keyCode, 'mouseup');
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break;
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}
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return ret;
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})
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.bind('mouseover focus', function(){
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$(this).addClass(self.widgetBaseClass+'-focus ui-state-hover');
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})
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.bind('mouseout blur', function(){
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$(this).removeClass(self.widgetBaseClass+'-focus ui-state-hover');
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});
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//document click closes menu
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$(document)
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.mousedown(function(event){
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self.close(event);
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});
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//change event on original selectmenu
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this.element
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.click(function(){ this._refreshValue(); })
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.focus(function(){ this.newelement[0].focus(); });
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//create menu portion, append to body
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var cornerClass = (o.style == "dropdown")? " ui-corner-bottom" : " ui-corner-all"
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this.list = $('<ul class="' + self.widgetBaseClass + '-menu ui-widget ui-widget-content'+cornerClass+'" aria-hidden="true" role="listbox" aria-labelledby="'+this.ids[0]+'" id="'+this.ids[1]+'"></ul>').appendTo('body');
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//serialize selectmenu element options
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var selectOptionData = [];
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this.element
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.find('option')
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.each(function(){
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selectOptionData.push({
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value: $(this).attr('value'),
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text: self._formatText(jQuery(this).text()),
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selected: $(this).attr('selected'),
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classes: $(this).attr('class'),
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parentOptGroup: $(this).parent('optgroup').attr('label')
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});
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});
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//active state class is only used in popup style
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var activeClass = (self.options.style == "popup") ? " ui-state-active" : "";
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//write li's
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for(var i in selectOptionData){
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var thisLi = $('<li role="presentation"><a href="#" tabindex="-1" role="option" aria-selected="false">'+ selectOptionData[i].text +'</a></li>')
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.data('index',i)
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.addClass(selectOptionData[i].classes)
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.data('optionClasses', selectOptionData[i].classes|| '')
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.mouseup(function(event){
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if(self._safemouseup){
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var changed = $(this).data('index') != self._selectedIndex();
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self.value($(this).data('index'));
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self.select(event);
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if(changed){ self.change(event); }
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self.close(event,true);
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}
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return false;
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})
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.click(function(){
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return false;
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})
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.bind('mouseover focus', function(){
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self._selectedOptionLi().addClass(activeClass);
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self._focusedOptionLi().removeClass(self.widgetBaseClass+'-item-focus ui-state-hover');
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$(this).removeClass('ui-state-active').addClass(self.widgetBaseClass + '-item-focus ui-state-hover');
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})
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.bind('mouseout blur', function(){
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if($(this).is( self._selectedOptionLi() )){ $(this).addClass(activeClass); }
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$(this).removeClass(self.widgetBaseClass + '-item-focus ui-state-hover');
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});
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//optgroup or not...
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if(selectOptionData[i].parentOptGroup){
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var optGroupName = self.widgetBaseClass + '-group-' + selectOptionData[i].parentOptGroup;
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if(this.list.find('li.' + optGroupName).size()){
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this.list.find('li.' + optGroupName + ':last ul').append(thisLi);
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}
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else{
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$('<li role="presentation" class="'+self.widgetBaseClass+'-group '+optGroupName+'"><span class="'+self.widgetBaseClass+'-group-label">'+selectOptionData[i].parentOptGroup+'</span><ul></ul></li>')
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.appendTo(this.list)
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.find('ul')
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.append(thisLi);
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}
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}
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else{
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thisLi.appendTo(this.list);
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}
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//this allows for using the scrollbar in an overflowed list
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this.list.bind('mousedown mouseup', function(){return false;});
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//append icon if option is specified
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if(o.icons){
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for(var j in o.icons){
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if(thisLi.is(o.icons[j].find)){
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thisLi
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.data('optionClasses', selectOptionData[i].classes + ' ' + self.widgetBaseClass + '-hasIcon')
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.addClass(self.widgetBaseClass + '-hasIcon');
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var iconClass = o.icons[j].icon || "";
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thisLi
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.find('a:eq(0)')
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.prepend('<span class="'+self.widgetBaseClass+'-item-icon ui-icon '+iconClass + '"></span>');
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}
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}
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}
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}
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//add corners to top and bottom menu items
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this.list.find('li:last').addClass("ui-corner-bottom");
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if(o.style == 'popup'){ this.list.find('li:first').addClass("ui-corner-top"); }
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//transfer classes to selectmenu and list
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if(o.transferClasses){
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var transferClasses = this.element.attr('class') || '';
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this.newelement.add(this.list).addClass(transferClasses);
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}
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//original selectmenu width
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var selectWidth = this.element.width();
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//set menu button width
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this.newelement.width( (o.width) ? o.width : selectWidth);
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//set menu width to either menuWidth option value, width option value, or select width
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if(o.style == 'dropdown'){ this.list.width( (o.menuWidth) ? o.menuWidth : ((o.width) ? o.width : selectWidth)); }
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else { this.list.width( (o.menuWidth) ? o.menuWidth : ((o.width) ? o.width - o.handleWidth : selectWidth - o.handleWidth)); }
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//set max height from option
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if(o.maxHeight && o.maxHeight < this.list.height()){ this.list.height(o.maxHeight); }
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//save reference to actionable li's (not group label li's)
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this._optionLis = this.list.find('li:not(.'+ self.widgetBaseClass +'-group)');
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//transfer menu click to menu button
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this.list
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.keydown(function(event){
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var ret = true;
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switch (event.keyCode) {
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case $.ui.keyCode.UP:
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case $.ui.keyCode.LEFT:
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ret = false;
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self._moveFocus(-1);
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break;
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case $.ui.keyCode.DOWN:
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case $.ui.keyCode.RIGHT:
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ret = false;
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self._moveFocus(1);
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break;
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case $.ui.keyCode.HOME:
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ret = false;
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self._moveFocus(':first');
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break;
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case $.ui.keyCode.PAGE_UP:
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ret = false;
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self._scrollPage('up');
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break;
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case $.ui.keyCode.PAGE_DOWN:
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ret = false;
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self._scrollPage('down');
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break;
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case $.ui.keyCode.END:
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ret = false;
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self._moveFocus(':last');
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break;
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case $.ui.keyCode.ENTER:
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case $.ui.keyCode.SPACE:
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ret = false;
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self.close(event,true);
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$(event.target).parents('li:eq(0)').trigger('mouseup');
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break;
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case $.ui.keyCode.TAB:
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ret = true;
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self.close(event,true);
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break;
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case $.ui.keyCode.ESCAPE:
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ret = false;
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self.close(event,true);
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break;
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default:
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ret = false;
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self._typeAhead(event.keyCode,'focus');
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break;
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}
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return ret;
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});
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//selectmenu style
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if(o.style == 'dropdown'){
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this.newelement
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.addClass(self.widgetBaseClass+"-dropdown");
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this.list
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.addClass(self.widgetBaseClass+"-menu-dropdown");
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}
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else {
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this.newelement
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.addClass(self.widgetBaseClass+"-popup");
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this.list
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.addClass(self.widgetBaseClass+"-menu-popup");
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}
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//append status span to button
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this.newelement.prepend('<span class="'+self.widgetBaseClass+'-status">'+ selectOptionData[this._selectedIndex()].text +'</span>');
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//hide original selectmenu element
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this.element.hide();
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//transfer disabled state
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if(this.element.attr('disabled') == true){ this.disable(); }
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//update value
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this.value(this._selectedIndex());
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},
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destroy: function() {
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this.element.removeData(this.widgetName)
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.removeClass(this.widgetBaseClass + '-disabled' + ' ' + this.namespace + '-state-disabled')
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.removeAttr('aria-disabled');
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//unbind click on label, reset its for attr
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$('label[for='+this.newelement.attr('id')+']')
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.attr('for',this.element.attr('id'))
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.unbind('click');
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this.newelement.remove();
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this.list.remove();
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this.element.show();
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},
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_typeAhead: function(code, eventType){
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var self = this;
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//define self._prevChar if needed
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if(!self._prevChar){ self._prevChar = ['',0]; }
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var C = String.fromCharCode(code);
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c = C.toLowerCase();
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var focusFound = false;
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function focusOpt(elem, ind){
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focusFound = true;
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$(elem).trigger(eventType);
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self._prevChar[1] = ind;
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};
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this.list.find('li a').each(function(i){
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if(!focusFound){
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var thisText = $(this).text();
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if( thisText.indexOf(C) == 0 || thisText.indexOf(c) == 0){
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if(self._prevChar[0] == C){
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if(self._prevChar[1] < i){ focusOpt(this,i); }
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}
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else{ focusOpt(this,i); }
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}
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}
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});
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this._prevChar[0] = C;
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},
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_uiHash: function(){
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return {
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index: this.value(),
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value: this.element[0].options[this.value()].value
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};
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},
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open: function(event){
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var self = this;
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var disabledStatus = this.newelement.attr("aria-disabled");
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if(disabledStatus != 'true'){
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this._refreshPosition();
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this._closeOthers(event);
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this.newelement
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.addClass('ui-state-active');
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this.list
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.appendTo('body')
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.addClass(self.widgetBaseClass + '-open')
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.attr('aria-hidden', false)
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.find('li:not(.'+ self.widgetBaseClass +'-group):eq('+ this._selectedIndex() +') a')[0].focus();
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if(this.options.style == "dropdown"){ this.newelement.removeClass('ui-corner-all').addClass('ui-corner-top'); }
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this._refreshPosition();
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this._trigger("open", event, this._uiHash());
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}
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},
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close: function(event, retainFocus){
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if(this.newelement.is('.ui-state-active')){
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this.newelement
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.removeClass('ui-state-active');
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this.list
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.attr('aria-hidden', true)
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.removeClass(this.widgetBaseClass+'-open');
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if(this.options.style == "dropdown"){ this.newelement.removeClass('ui-corner-top').addClass('ui-corner-all'); }
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if(retainFocus){this.newelement[0].focus();}
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this._trigger("close", event, this._uiHash());
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}
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},
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change: function(event) {
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this.element.trigger('change');
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this._trigger("change", event, this._uiHash());
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},
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select: function(event) {
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this._trigger("select", event, this._uiHash());
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},
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_closeOthers: function(event){
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$('.'+ this.widgetBaseClass +'.ui-state-active').not(this.newelement).each(function(){
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$(this).data('selectelement').selectmenu('close',event);
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});
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$('.'+ this.widgetBaseClass +'.ui-state-hover').trigger('mouseout');
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},
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_toggle: function(event,retainFocus){
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if(this.list.is('.'+ this.widgetBaseClass +'-open')){ this.close(event,retainFocus); }
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else { this.open(event); }
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},
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_formatText: function(text){
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return this.options.format ? this.options.format(text) : text;
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},
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_selectedIndex: function(){
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return this.element[0].selectedIndex;
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},
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_selectedOptionLi: function(){
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return this._optionLis.eq(this._selectedIndex());
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},
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_focusedOptionLi: function(){
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return this.list.find('.'+ this.widgetBaseClass +'-item-focus');
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},
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_moveSelection: function(amt){
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var currIndex = parseInt(this._selectedOptionLi().data('index'), 10);
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var newIndex = currIndex + amt;
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return this._optionLis.eq(newIndex).trigger('mouseup');
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},
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_moveFocus: function(amt){
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if(!isNaN(amt)){
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var currIndex = parseInt(this._focusedOptionLi().data('index'), 10);
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var newIndex = currIndex + amt;
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}
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else { var newIndex = parseInt(this._optionLis.filter(amt).data('index'), 10); }
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if(newIndex < 0){ newIndex = 0; }
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if(newIndex > this._optionLis.size()-1){
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newIndex = this._optionLis.size()-1;
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}
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var activeID = this.widgetBaseClass + '-item-' + Math.round(Math.random() * 1000);
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this._focusedOptionLi().find('a:eq(0)').attr('id','');
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this._optionLis.eq(newIndex).find('a:eq(0)').attr('id',activeID)[0].focus();
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this.list.attr('aria-activedescendant', activeID);
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},
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_scrollPage: function(direction){
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var numPerPage = Math.floor(this.list.outerHeight() / this.list.find('li:first').outerHeight());
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numPerPage = (direction == 'up') ? -numPerPage : numPerPage;
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this._moveFocus(numPerPage);
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},
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_setData: function(key, value) {
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this.options[key] = value;
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if (key == 'disabled') {
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this.close();
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this.element
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.add(this.newelement)
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.add(this.list)
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[value ? 'addClass' : 'removeClass'](
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this.widgetBaseClass + '-disabled' + ' ' +
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this.namespace + '-state-disabled')
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.attr("aria-disabled", value);
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}
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},
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value: function(newValue) {
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if (arguments.length) {
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this.element[0].selectedIndex = newValue;
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this._refreshValue();
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this._refreshPosition();
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}
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return this.element[0].selectedIndex;
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},
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_refreshValue: function() {
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var activeClass = (this.options.style == "popup") ? " ui-state-active" : "";
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var activeID = this.widgetBaseClass + '-item-' + Math.round(Math.random() * 1000);
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//deselect previous
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this.list
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.find('.'+ this.widgetBaseClass +'-item-selected')
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.removeClass(this.widgetBaseClass + "-item-selected" + activeClass)
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.find('a')
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.attr('aria-selected', 'false')
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.attr('id', '');
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//select new
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this._selectedOptionLi()
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.addClass(this.widgetBaseClass + "-item-selected"+activeClass)
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.find('a')
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.attr('aria-selected', 'true')
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.attr('id', activeID);
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//toggle any class brought in from option
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var currentOptionClasses = this.newelement.data('optionClasses') ? this.newelement.data('optionClasses') : "";
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var newOptionClasses = this._selectedOptionLi().data('optionClasses') ? this._selectedOptionLi().data('optionClasses') : "";
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this.newelement
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.removeClass(currentOptionClasses)
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.data('optionClasses', newOptionClasses)
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.addClass( newOptionClasses )
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.find('.'+this.widgetBaseClass+'-status')
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.html(
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this._selectedOptionLi()
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.find('a:eq(0)')
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.html()
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);
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this.list.attr('aria-activedescendant', activeID)
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},
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_refreshPosition: function(){
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//set left value
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this.list.css('left', this.newelement.offset().left);
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//set top value
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var menuTop = this.newelement.offset().top;
|
|
menuTop+=this.options.offsetTop;
|
|
var scrolledAmt = this.list[0].scrollTop;
|
|
this.list.find('li:lt('+this._selectedIndex()+')').each(function(){
|
|
scrolledAmt -= $(this).outerHeight();
|
|
});
|
|
|
|
if(this.newelement.is('.'+this.widgetBaseClass+'-popup')){
|
|
menuTop+=scrolledAmt;
|
|
this.list.css('top', menuTop);
|
|
}
|
|
else {
|
|
menuTop += this.newelement.height();
|
|
this.list.css('top', menuTop);
|
|
}
|
|
}
|
|
});
|
|
|
|
$.extend($.ui.selectmenu, {
|
|
getter: "value",
|
|
version: "@VERSION",
|
|
eventPrefix: "selectmenu",
|
|
defaults: {
|
|
transferClasses: true,
|
|
style: 'popup',
|
|
width: null,
|
|
menuWidth: null,
|
|
handleWidth: 26,
|
|
maxHeight: null,
|
|
icons: null,
|
|
format: null,
|
|
offsetTop: 0
|
|
}
|
|
});
|
|
|
|
})(jQuery); |