yuncms / framework

}( 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( " " );

		}

	},

	_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 );

	}

} ] );

} ) );