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selectmenu.js (16053B)

---

 /*!
  * jQuery UI Selectmenu 1.12.1
  * http://jqueryui.com
  *
  * Copyright jQuery Foundation and other contributors
  * Released under the MIT license.
  * http://jquery.org/license
  */
 
 //>>label: Selectmenu
 //>>group: Widgets
 // jscs:disable maximumLineLength
 //>>description: Duplicates and extends the functionality of a native HTML select element, allowing it to be customizable in behavior and appearance far beyond the limitations of a native select.
 // jscs:enable maximumLineLength
 //>>docs: http://api.jqueryui.com/selectmenu/
 //>>demos: http://jqueryui.com/selectmenu/
 //>>css.structure: ../../themes/base/core.css
 //>>css.structure: ../../themes/base/selectmenu.css, ../../themes/base/button.css
 //>>css.theme: ../../themes/base/theme.css
 
 ( function( factory ) {
 	if ( typeof define === "function" && define.amd ) {
 
 		// AMD. Register as an anonymous module.
 		define( [
 			"jquery",
 			"./menu",
 			"./core"
 		], factory );
 	} else {
 
 		// Browser globals
 		factory( jQuery );
 	}
 }( function( $ ) {
 
 return $.widget( "ui.selectmenu", [ $.ui.formResetMixin, {
 	version: "1.12.1",
 	defaultElement: "<select>",
 	options: {
 		appendTo: null,
 		classes: {
 			"ui-selectmenu-button-open": "ui-corner-top",
 			"ui-selectmenu-button-closed": "ui-corner-all"
 		},
 		disabled: null,
 		icons: {
 			button: "ui-icon-triangle-1-s"
 		},
 		position: {
 			my: "left top",
 			at: "left bottom",
 			collision: "none"
 		},
 		width: false,
 
 		// Callbacks
 		change: null,
 		close: null,
 		focus: null,
 		open: null,
 		select: null
 	},
 
 	_create: function() {
 		var selectmenuId = this.element.uniqueId().attr( "id" );
 		this.ids = {
 			element: selectmenuId,
 			button: selectmenuId + "-button",
 			menu: selectmenuId + "-menu"
 		};
 
 		this._drawButton();
 		this._drawMenu();
 		this._bindFormResetHandler();
 
 		this._rendered = false;
 		this.menuItems = $();
 	},
 
 	_drawButton: function() {
 		var icon,
 			that = this,
 			item = this._parseOption(
 				this.element.find( "option:selected" ),
 				this.element[ 0 ].selectedIndex
 			);
 
 		// Associate existing label with the new button
 		this.labels = this.element.labels().attr( "for", this.ids.button );
 		this._on( this.labels, {
 			click: function( event ) {
 				this.button.focus();
 				event.preventDefault();
 			}
 		} );
 
 		// Hide original select element
 		this.element.hide();
 
 		// Create button
 		this.button = $( "<span>", {
 			tabindex: this.options.disabled ? -1 : 0,
 			id: this.ids.button,
 			role: "combobox",
 			"aria-expanded": "false",
 			"aria-autocomplete": "list",
 			"aria-owns": this.ids.menu,
 			"aria-haspopup": "true",
 			title: this.element.attr( "title" )
 		} )
 			.insertAfter( this.element );
 
 		this._addClass( this.button, "ui-selectmenu-button ui-selectmenu-button-closed",
 			"ui-button ui-widget" );
 
 		icon = $( "<span>" ).appendTo( this.button );
 		this._addClass( icon, "ui-selectmenu-icon", "ui-icon " + this.options.icons.button );
 		this.buttonItem = this._renderButtonItem( item )
 			.appendTo( this.button );
 
 		if ( this.options.width !== false ) {
 			this._resizeButton();
 		}
 
 		this._on( this.button, this._buttonEvents );
 		this.button.one( "focusin", function() {
 
 			// Delay rendering the menu items until the button receives focus.
 			// The menu may have already been rendered via a programmatic open.
 			if ( !that._rendered ) {
 				that._refreshMenu();
 			}
 		} );
 	},
 
 	_drawMenu: function() {
 		var that = this;
 
 		// Create menu
 		this.menu = $( "<ul>", {
 			"aria-hidden": "true",
 			"aria-labelledby": this.ids.button,
 			id: this.ids.menu
 		} );
 
 		// Wrap menu
 		this.menuWrap = $( "<div>" ).append( this.menu );
 		this._addClass( this.menuWrap, "ui-selectmenu-menu", "ui-front" );
 		this.menuWrap.appendTo( this._appendTo() );
 
 		// Initialize menu widget
 		this.menuInstance = this.menu
 			.menu( {
 				classes: {
 					"ui-menu": "ui-corner-bottom"
 				},
 				role: "listbox",
 				select: function( event, ui ) {
 					event.preventDefault();
 
 					// Support: IE8
 					// If the item was selected via a click, the text selection
 					// will be destroyed in IE
 					that._setSelection();
 
 					that._select( ui.item.data( "ui-selectmenu-item" ), event );
 				},
 				focus: function( event, ui ) {
 					var item = ui.item.data( "ui-selectmenu-item" );
 
 					// Prevent inital focus from firing and check if its a newly focused item
 					if ( that.focusIndex != null && item.index !== that.focusIndex ) {
 						that._trigger( "focus", event, { item: item } );
 						if ( !that.isOpen ) {
 							that._select( item, event );
 						}
 					}
 					that.focusIndex = item.index;
 
 					that.button.attr( "aria-activedescendant",
 						that.menuItems.eq( item.index ).attr( "id" ) );
 				}
 			} )
 			.menu( "instance" );
 
 		// Don't close the menu on mouseleave
 		this.menuInstance._off( this.menu, "mouseleave" );
 
 		// Cancel the menu's collapseAll on document click
 		this.menuInstance._closeOnDocumentClick = function() {
 			return false;
 		};
 
 		// Selects often contain empty items, but never contain dividers
 		this.menuInstance._isDivider = function() {
 			return false;
 		};
 	},
 
 	refresh: function() {
 		this._refreshMenu();
 		this.buttonItem.replaceWith(
 			this.buttonItem = this._renderButtonItem(
 
 				// Fall back to an empty object in case there are no options
 				this._getSelectedItem().data( "ui-selectmenu-item" ) || {}
 			)
 		);
 		if ( this.options.width === null ) {
 			this._resizeButton();
 		}
 	},
 
 	_refreshMenu: function() {
 		var item,
 			options = this.element.find( "option" );
 
 		this.menu.empty();
 
 		this._parseOptions( options );
 		this._renderMenu( this.menu, this.items );
 
 		this.menuInstance.refresh();
 		this.menuItems = this.menu.find( "li" )
 			.not( ".ui-selectmenu-optgroup" )
 				.find( ".ui-menu-item-wrapper" );
 
 		this._rendered = true;
 
 		if ( !options.length ) {
 			return;
 		}
 
 		item = this._getSelectedItem();
 
 		// Update the menu to have the correct item focused
 		this.menuInstance.focus( null, item );
 		this._setAria( item.data( "ui-selectmenu-item" ) );
 
 		// Set disabled state
 		this._setOption( "disabled", this.element.prop( "disabled" ) );
 	},
 
 	open: function( event ) {
 		if ( this.options.disabled ) {
 			return;
 		}
 
 		// If this is the first time the menu is being opened, render the items
 		if ( !this._rendered ) {
 			this._refreshMenu();
 		} else {
 
 			// Menu clears focus on close, reset focus to selected item
 			this._removeClass( this.menu.find( ".ui-state-active" ), null, "ui-state-active" );
 			this.menuInstance.focus( null, this._getSelectedItem() );
 		}
 
 		// If there are no options, don't open the menu
 		if ( !this.menuItems.length ) {
 			return;
 		}
 
 		this.isOpen = true;
 		this._toggleAttr();
 		this._resizeMenu();
 		this._position();
 
 		this._on( this.document, this._documentClick );
 
 		this._trigger( "open", event );
 	},
 
 	_position: function() {
 		this.menuWrap.position( $.extend( { of: this.button }, this.options.position ) );
 	},
 
 	close: function( event ) {
 		if ( !this.isOpen ) {
 			return;
 		}
 
 		this.isOpen = false;
 		this._toggleAttr();
 
 		this.range = null;
 		this._off( this.document );
 
 		this._trigger( "close", event );
 	},
 
 	widget: function() {
 		return this.button;
 	},
 
 	menuWidget: function() {
 		return this.menu;
 	},
 
 	_renderButtonItem: function( item ) {
 		var buttonItem = $( "<span>" );
 
 		this._setText( buttonItem, item.label );
 		this._addClass( buttonItem, "ui-selectmenu-text" );
 
 		return buttonItem;
 	},
 
 	_renderMenu: function( ul, items ) {
 		var that = this,
 			currentOptgroup = "";
 
 		$.each( items, function( index, item ) {
 			var li;
 
 			if ( item.optgroup !== currentOptgroup ) {
 				li = $( "<li>", {
 					text: item.optgroup
 				} );
 				that._addClass( li, "ui-selectmenu-optgroup", "ui-menu-divider" +
 					( item.element.parent( "optgroup" ).prop( "disabled" ) ?
 						" ui-state-disabled" :
 						"" ) );
 
 				li.appendTo( ul );
 
 				currentOptgroup = item.optgroup;
 			}
 
 			that._renderItemData( ul, item );
 		} );
 	},
 
 	_renderItemData: function( ul, item ) {
 		return this._renderItem( ul, item ).data( "ui-selectmenu-item", item );
 	},
 
 	_renderItem: function( ul, item ) {
 		var li = $( "<li>" ),
 			wrapper = $( "<div>", {
 				title: item.element.attr( "title" )
 			} );
 
 		if ( item.disabled ) {
 			this._addClass( li, null, "ui-state-disabled" );
 		}
 		this._setText( wrapper, item.label );
 
 		return li.append( wrapper ).appendTo( ul );
 	},
 
 	_setText: function( element, value ) {
 		if ( value ) {
 			element.text( value );
 		} else {
 			element.html( "&#160;" );
 		}
 	},
 
 	_move: function( direction, event ) {
 		var item, next,
 			filter = ".ui-menu-item";
 
 		if ( this.isOpen ) {
 			item = this.menuItems.eq( this.focusIndex ).parent( "li" );
 		} else {
 			item = this.menuItems.eq( this.element[ 0 ].selectedIndex ).parent( "li" );
 			filter += ":not(.ui-state-disabled)";
 		}
 
 		if ( direction === "first" || direction === "last" ) {
 			next = item[ direction === "first" ? "prevAll" : "nextAll" ]( filter ).eq( -1 );
 		} else {
 			next = item[ direction + "All" ]( filter ).eq( 0 );
 		}
 
 		if ( next.length ) {
 			this.menuInstance.focus( event, next );
 		}
 	},
 
 	_getSelectedItem: function() {
 		return this.menuItems.eq( this.element[ 0 ].selectedIndex ).parent( "li" );
 	},
 
 	_toggle: function( event ) {
 		this[ this.isOpen ? "close" : "open" ]( event );
 	},
 
 	_setSelection: function() {
 		var selection;
 
 		if ( !this.range ) {
 			return;
 		}
 
 		if ( window.getSelection ) {
 			selection = window.getSelection();
 			selection.removeAllRanges();
 			selection.addRange( this.range );
 
 		// Support: IE8
 		} else {
 			this.range.select();
 		}
 
 		// Support: IE
 		// Setting the text selection kills the button focus in IE, but
 		// restoring the focus doesn't kill the selection.
 		this.button.focus();
 	},
 
 	_documentClick: {
 		mousedown: function( event ) {
 			if ( !this.isOpen ) {
 				return;
 			}
 
 			if ( !$( event.target ).closest( ".ui-selectmenu-menu, #" +
 					$.ui.escapeSelector( this.ids.button ) ).length ) {
 				this.close( event );
 			}
 		}
 	},
 
 	_buttonEvents: {
 
 		// Prevent text selection from being reset when interacting with the selectmenu (#10144)
 		mousedown: function() {
 			var selection;
 
 			if ( window.getSelection ) {
 				selection = window.getSelection();
 				if ( selection.rangeCount ) {
 					this.range = selection.getRangeAt( 0 );
 				}
 
 			// Support: IE8
 			} else {
 				this.range = document.selection.createRange();
 			}
 		},
 
 		click: function( event ) {
 			this._setSelection();
 			this._toggle( event );
 		},
 
 		keydown: function( event ) {
 			var preventDefault = true;
 			switch ( event.keyCode ) {
 			case $.ui.keyCode.TAB:
 			case $.ui.keyCode.ESCAPE:
 				this.close( event );
 				preventDefault = false;
 				break;
 			case $.ui.keyCode.ENTER:
 				if ( this.isOpen ) {
 					this._selectFocusedItem( event );
 				}
 				break;
 			case $.ui.keyCode.UP:
 				if ( event.altKey ) {
 					this._toggle( event );
 				} else {
 					this._move( "prev", event );
 				}
 				break;
 			case $.ui.keyCode.DOWN:
 				if ( event.altKey ) {
 					this._toggle( event );
 				} else {
 					this._move( "next", event );
 				}
 				break;
 			case $.ui.keyCode.SPACE:
 				if ( this.isOpen ) {
 					this._selectFocusedItem( event );
 				} else {
 					this._toggle( event );
 				}
 				break;
 			case $.ui.keyCode.LEFT:
 				this._move( "prev", event );
 				break;
 			case $.ui.keyCode.RIGHT:
 				this._move( "next", event );
 				break;
 			case $.ui.keyCode.HOME:
 			case $.ui.keyCode.PAGE_UP:
 				this._move( "first", event );
 				break;
 			case $.ui.keyCode.END:
 			case $.ui.keyCode.PAGE_DOWN:
 				this._move( "last", event );
 				break;
 			default:
 				this.menu.trigger( event );
 				preventDefault = false;
 			}
 
 			if ( preventDefault ) {
 				event.preventDefault();
 			}
 		}
 	},
 
 	_selectFocusedItem: function( event ) {
 		var item = this.menuItems.eq( this.focusIndex ).parent( "li" );
 		if ( !item.hasClass( "ui-state-disabled" ) ) {
 			this._select( item.data( "ui-selectmenu-item" ), event );
 		}
 	},
 
 	_select: function( item, event ) {
 		var oldIndex = this.element[ 0 ].selectedIndex;
 
 		// Change native select element
 		this.element[ 0 ].selectedIndex = item.index;
 		this.buttonItem.replaceWith( this.buttonItem = this._renderButtonItem( item ) );
 		this._setAria( item );
 		this._trigger( "select", event, { item: item } );
 
 		if ( item.index !== oldIndex ) {
 			this._trigger( "change", event, { item: item } );
 		}
 
 		this.close( event );
 	},
 
 	_setAria: function( item ) {
 		var id = this.menuItems.eq( item.index ).attr( "id" );
 
 		this.button.attr( {
 			"aria-labelledby": id,
 			"aria-activedescendant": id
 		} );
 		this.menu.attr( "aria-activedescendant", id );
 	},
 
 	_setOption: function( key, value ) {
 		if ( key === "icons" ) {
 			var icon = this.button.find( "span.ui-icon" );
 			this._removeClass( icon, null, this.options.icons.button )
 				._addClass( icon, null, value.button );
 		}
 
 		this._super( key, value );
 
 		if ( key === "appendTo" ) {
 			this.menuWrap.appendTo( this._appendTo() );
 		}
 
 		if ( key === "width" ) {
 			this._resizeButton();
 		}
 	},
 
 	_setOptionDisabled: function( value ) {
 		this._super( value );
 
 		this.menuInstance.option( "disabled", value );
 		this.button.attr( "aria-disabled", value );
 		this._toggleClass( this.button, null, "ui-state-disabled", value );
 
 		this.element.prop( "disabled", value );
 		if ( value ) {
 			this.button.attr( "tabindex", -1 );
 			this.close();
 		} else {
 			this.button.attr( "tabindex", 0 );
 		}
 	},
 
 	_appendTo: function() {
 		var element = this.options.appendTo;
 
 		if ( element ) {
 			element = element.jquery || element.nodeType ?
 				$( element ) :
 				this.document.find( element ).eq( 0 );
 		}
 
 		if ( !element || !element[ 0 ] ) {
 			element = this.element.closest( ".ui-front, dialog" );
 		}
 
 		if ( !element.length ) {
 			element = this.document[ 0 ].body;
 		}
 
 		return element;
 	},
 
 	_toggleAttr: function() {
 		this.button.attr( "aria-expanded", this.isOpen );
 
 		// We can't use two _toggleClass() calls here, because we need to make sure
 		// we always remove classes first and add them second, otherwise if both classes have the
 		// same theme class, it will be removed after we add it.
 		this._removeClass( this.button, "ui-selectmenu-button-" +
 			( this.isOpen ? "closed" : "open" ) )
 			._addClass( this.button, "ui-selectmenu-button-" +
 				( this.isOpen ? "open" : "closed" ) )
 			._toggleClass( this.menuWrap, "ui-selectmenu-open", null, this.isOpen );
 
 		this.menu.attr( "aria-hidden", !this.isOpen );
 	},
 
 	_resizeButton: function() {
 		var width = this.options.width;
 
 		// For `width: false`, just remove inline style and stop
 		if ( width === false ) {
 			this.button.css( "width", "" );
 			return;
 		}
 
 		// For `width: null`, match the width of the original element
 		if ( width === null ) {
 			width = this.element.show().outerWidth();
 			this.element.hide();
 		}
 
 		this.button.outerWidth( width );
 	},
 
 	_resizeMenu: function() {
 		this.menu.outerWidth( Math.max(
 			this.button.outerWidth(),
 
 			// Support: IE10
 			// IE10 wraps long text (possibly a rounding bug)
 			// so we add 1px to avoid the wrapping
 			this.menu.width( "" ).outerWidth() + 1
 		) );
 	},
 
 	_getCreateOptions: function() {
 		var options = this._super();
 
 		options.disabled = this.element.prop( "disabled" );
 
 		return options;
 	},
 
 	_parseOptions: function( options ) {
 		var that = this,
 			data = [];
 		options.each( function( index, item ) {
 			data.push( that._parseOption( $( item ), index ) );
 		} );
 		this.items = data;
 	},
 
 	_parseOption: function( option, index ) {
 		var optgroup = option.parent( "optgroup" );
 
 		return {
 			element: option,
 			index: index,
 			value: option.val(),
 			label: option.text(),
 			optgroup: optgroup.attr( "label" ) || "",
 			disabled: optgroup.prop( "disabled" ) || option.prop( "disabled" )
 		};
 	},
 
 	_destroy: function() {
 		this._unbindFormResetHandler();
 		this.menuWrap.remove();
 		this.button.remove();
 		this.element.show();
 		this.element.removeUniqueId();
 		this.labels.attr( "for", this.ids.element );
 	}
 } ] );
 
 } ) );