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Diffstat (limited to 'ui/jquery.ui.selectmenu.js')
| -rw-r--r-- | ui/jquery.ui.selectmenu.js | 413 |
1 files changed, 413 insertions, 0 deletions
diff --git a/ui/jquery.ui.selectmenu.js b/ui/jquery.ui.selectmenu.js new file mode 100644 index 000000000..b8aec3750 --- /dev/null +++ b/ui/jquery.ui.selectmenu.js @@ -0,0 +1,413 @@ +/* + * jQuery UI Selectmenu @VERSION + * + * Copyright 2011, AUTHORS.txt (http://jqueryui.com/about) + * Dual licensed under the MIT or GPL Version 2 licenses. + * http://jquery.org/license + * + * http://docs.jquery.com/UI/Selectmenu + * + * Depends: + * jquery.ui.core.js + * jquery.ui.widget.js + * jquery.ui.position.js + * jquery.ui.menu.js + * jquery.ui.button.js + */ +(function( $, undefined ) { + +$.widget( "ui.selectmenu", { + version: "@VERSION", + defaultElement: "<select>", + options: { + dropdown: true, + appendTo: "body", + position: { + my: "left top", + at: "left bottom", + collision: "none" + }, + value: null, + // callbacks + open: null, + focus: null, + select: null, + close: null, + change: null + }, + + _create: function() { + // set a default id value, generate a new random one if not set by developer + var selectmenuId = this.element.attr( 'id' ) || 'ui-selectmenu-' + Math.random().toString( 16 ).slice( 2, 10 ); + + // array of button and menu id's + this.ids = { id: selectmenuId, button: selectmenuId + '-button', menu: selectmenuId + '-menu' }; + + // set current value + if ( this.options.value ) { + this.element[0].value = this.options.value; + } else { + this.options.value = this.element[0].value; + } + + // catch click event of the label + this._bind({ + 'click': function( event ) { + this.button.focus(); + event.preventDefault(); + } + }); + + this._drawButton(); + this._bind( this.button, this._buttonEvents ); + + this._drawMenu(); + this.refresh(); + }, + + _drawButton: function() { + var tabindex = this.element.attr( 'tabindex' ); + + // hide original select tag + this.element.hide(); + + // create button + this.button = $( '<a />', { + href: '#' + this.ids.id, + tabindex: ( tabindex ? tabindex : this.element.attr( 'disabled' ) ? -1 : 0 ), + id: this.ids.button, + css: { + width: this.element.outerWidth() + }, + 'aria-disabled': this.options.disabled, + 'aria-owns': this.ids.menu, + 'aria-haspopup': true + }) + .button({ + label: this.element.find( "option:selected" ).text(), + icons: { + primary: ( this.options.dropdown ? 'ui-icon-triangle-1-s' : 'ui-icon-triangle-2-n-s' ) + } + }); + + // wrap and insert new button + this.buttonWrap = $( '<span />' ) + .addClass( 'ui-selectmenu-button' ) + .append( this.button ) + .insertAfter( this.element ); + }, + + _drawMenu: function() { + var that = this; + + // create menu portion, append to body + this.menu = $( '<ul />', { + 'class': 'ui-widget ui-widget-content', + 'aria-hidden': true, + 'aria-labelledby': this.ids.button, + role: 'menubox', + id: this.ids.menu + }); + + // set width + if ( this.options.dropdown ) { + var setWidth = this.button.outerWidth(); + } else { + var text = this.button.find( "span.ui-button-text"); + var setWidth = text.width() + parseFloat( text.css( "padding-left" ) ) || 0 + parseFloat( text.css( "margin-left" ) || 0 ); + } + + // wrap menu + this.menuWrap = $( '<div />' ) + .addClass( 'ui-selectmenu-menu' ) + .width( setWidth ) + .append( this.menu ) + .appendTo( this.options.appendTo ); + + // init menu widget + this.menu.menu({ + select: function( event, ui ) { + var flag = false, + item = ui.item.data( "item.selectmenu" ), + oldIndex = that.element[0].selectedIndex; + + that._setOption( "value", item.value ); + that._trigger( "select", event, { item: item } ); + + if ( item.index != oldIndex ) { + that._trigger( "change", event, { item: item } ); + } + + if ( that.isOpen ) { + event.preventDefault(); + that.close( event, true); + } + }, + focus: function( event, ui ) { + var item = ui.item.data( "item.selectmenu" ); + + if ( that.focus !== undefined && item.index != that.focus ) { + that._trigger( "focus", event, { item: item } ); + } + + that.focus = item.index; + } + }); + + // document click closes menu + this._bind( document, { + 'click': function( event ) { + if ( this.isOpen && !$( event.target ).closest( "#" + this.ids.button).length ) { + this.close( event ); + } + } + }); + }, + + refresh: function() { + this.menu.empty(); + + this._readOptions(); + this._renderMenu( this.menu, this.items ); + + this.menu.menu( "refresh" ); + + // adjust ARIA + this.menu.find( "li" ).not( '.ui-selectmenu-optgroup' ).find( 'a' ).attr( 'role', 'option' ); + + if ( this.options.dropdown ) { + this.menu + .addClass( 'ui-corner-bottom' ) + .removeClass( 'ui-corner-all' ); + } + + // transfer disabled state + if ( this.element.attr( 'disabled' ) ) { + this.disable(); + } else { + this.enable() + } + }, + + open: function( event ) { + var currentItem = this._getSelectedItem(); + + if ( !this.options.disabled ) { + if ( this.options.dropdown ) { + this.button + .addClass( 'ui-corner-top' ) + .removeClass( 'ui-corner-all' ); + } + + this.menuWrap.addClass( 'ui-selectmenu-open' ); + this.menu.attr("aria-hidden", false); + // needs to be fired after the document click event has closed all other Selectmenus + // otherwise the current item is not indicated + // TODO check if this should be handled by Menu + this._delay( function(){ + this.menu.menu( "focus", event, currentItem ); + }, 1); + + if ( !this.options.dropdown ) { + // center current item + if ( this.menu.css("overflow") == "auto" ) { + this.menu.scrollTop( this.menu.scrollTop() + currentItem.position().top - this.menu.outerHeight()/2 + currentItem.outerHeight()/2 ); + } + // calculate offset + var _offset = ( this.menu.offset().top - currentItem.offset().top + ( this.button.outerHeight() - currentItem.outerHeight() ) / 2); + $.extend( this.options.position, { + my: "left top", + at: "left top", + offset: "0 " + _offset + }); + } + + this.menuWrap + .zIndex( this.element.zIndex() + 1 ) + .position( $.extend({ + of: this.button + }, this.options.position )); + + this.isOpen = true; + this._trigger( "open", event ); + } + }, + + close: function( event, focus ) { + if ( this.isOpen ) { + if ( this.options.dropdown ) { + this.button + .addClass( 'ui-corner-all' ) + .removeClass( 'ui-corner-top' ); + } + + this.menuWrap.removeClass( 'ui-selectmenu-open' ); + this.menu.attr("aria-hidden", true); + this.isOpen = false; + + if ( focus ) { + this.button.focus(); + } + + this._trigger( "close", event ); + } + }, + + widget: function() { + return this.buttonWrap.add( this.menuWrap ); + }, + + _renderMenu: function( ul, items ) { + var that = this, + currentOptgroup = ""; + + $.each( items, function( index, item ) { + if ( item.optgroup != currentOptgroup ) { + var optgroup = $( '<li class="ui-selectmenu-optgroup">' + item.optgroup + '</li>' ); + if ( item.element.parent( "optgroup" ).attr( "disabled" ) ) optgroup.addClass( 'ui-state-disabled' ); + ul.append( optgroup ); + currentOptgroup = item.optgroup; + } + that._renderItem( ul, item ); + }); + }, + + _renderItem: function( ul, item) { + var li = $( "<li />" ).data( "item.selectmenu", item ); + if ( item.disabled ) { + li.addClass( 'ui-state-disabled' ).text( item.label ); + } else { + li.append( $( "<a />", { + text: item.label, + href: '#' + }) + ); + } + + return li.appendTo( ul ); + }, + + _move: function( key, event ) { + if ( !this.isOpen ) { + this.menu.menu( "focus", event, this._getSelectedItem() ); + } + + this.menu.menu( key, event ); + + if ( !this.isOpen ) { + this.menu.menu( "select", event ); + } + }, + + _getSelectedItem: function() { + return this.menu.find( "li" ).not( '.ui-selectmenu-optgroup' ).eq( this.element[0].selectedIndex ); + }, + + _toggle: function( event ) { + if ( this.isOpen ) { + this.close( event ); + } else { + this.open( event ); + } + }, + + _buttonEvents: { + click: function( event ) { + this._toggle( event ); + event.preventDefault(); + }, + keydown: function( event ) { + switch (event.keyCode) { + case $.ui.keyCode.TAB: + if ( this.isOpen ) { + this.close( event ); + } + break; + case $.ui.keyCode.ENTER: + if ( this.isOpen ) { + this.menu.menu( "select", this._getSelectedItem() ); + } + event.preventDefault(); + break; + case $.ui.keyCode.SPACE: + event.preventDefault(); + break; + case $.ui.keyCode.UP: + if ( event.altKey ) { + this._toggle( event ); + } else { + this._move( "previous", event ); + } + event.preventDefault(); + break; + case $.ui.keyCode.DOWN: + if ( event.altKey ) { + this._toggle( event ); + } else { + this._move( "next", event ); + } + event.preventDefault(); + break; + case $.ui.keyCode.LEFT: + this._move( "previous", event ); + event.preventDefault(); + break; + case $.ui.keyCode.RIGHT: + this._move( "next", event ); + event.preventDefault(); + break; + default: + this.menu.trigger( event ); + } + } + }, + + _setOption: function( key, value ) { + this._super( key, value ); + + if ( key === "appendTo" ) { + this.menuWrap.appendTo( $( value || "body", this.element[0].ownerDocument )[0] ); + } + if ( key === "value" && value !== undefined ) { + this.element[0].value = value; + this.button.children( '.ui-button-text' ).text( this.items[ this.element[0].selectedIndex ].label ); + } + if ( key === "disabled" ) { + this.button.button( "option", "disabled", value ); + if ( value ) { + this.element.attr( "disabled", "disabled" ); + this.button.attr( "tabindex", -1 ); + this.close(); + } else { + this.element.removeAttr( "disabled" ); + this.button.attr( "tabindex", 0 ); + } + this.menu.attr( "aria-disabled", value ); + } + }, + + _readOptions: function() { + var data = []; + $.each( this.element.find( 'option' ), function( index, item ) { + var option = $( item ), + optgroup = option.parent( "optgroup" ); + data.push({ + element: option, + index: index, + value: option.attr( 'value' ), + label: option.text(), + optgroup: optgroup.attr( "label" ) || false, + disabled: optgroup.attr( "disabled" ) || option.attr( "disabled" ) + }); + }); + this.items = data; + }, + + _destroy: function() { + this.menuWrap.remove(); + this.buttonWrap.remove(); + this.element.show(); + } +}); + +}( jQuery )); |