", {
"aria-hidden": "true",
"aria-labelledby": this.ids.button,
id: this.ids.menu
});
// Wrap menu
this.menuWrap = $( "", {
"class": "ui-selectmenu-menu ui-front"
})
.append( this.menu )
.appendTo( this._appendTo() );
// Initialize menu widget
this.menuInstance = this.menu
.menu({
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" );
// Adjust menu styles to dropdown
this.menu
.addClass( "ui-corner-bottom" )
.removeClass( "ui-corner-all" );
// 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._setText( this.buttonText, this._getSelectedItem().text() );
if ( !this.options.width ) {
this._resizeButton();
}
},
_refreshMenu: function() {
this.menu.empty();
var item,
options = this.element.find( "option" );
if ( !options.length ) {
return;
}
this._parseOptions( options );
this._renderMenu( this.menu, this.items );
this.menuInstance.refresh();
this.menuItems = this.menu.find( "li" ).not( ".ui-selectmenu-optgroup" );
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.menuItems ) {
this._refreshMenu();
} else {
// Menu clears focus on close, reset focus to selected item
this.menu.find( ".ui-state-focus" ).removeClass( "ui-state-focus" );
this.menuInstance.focus( null, this._getSelectedItem() );
}
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;
},
_renderMenu: function( ul, items ) {
var that = this,
currentOptgroup = "";
$.each( items, function( index, item ) {
if ( item.optgroup !== currentOptgroup ) {
$( "
- ", {
"class": "ui-selectmenu-optgroup ui-menu-divider" +
( item.element.parent( "optgroup" ).prop( "disabled" ) ?
" ui-state-disabled" :
"" ),
text: item.optgroup
})
.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 = $( "
- " );
if ( item.disabled ) {
li.addClass( "ui-state-disabled" );
}
this._setText( li, item.label );
return li.appendTo( ul );
},
_setText: function( element, value ) {
if ( value ) {
element.text( value );
} else {
element.html( " " );
}
},
_move: function( direction, event ) {
var item, next,
filter = ".ui-menu-item";
if ( this.isOpen ) {
item = this.menuItems.eq( this.focusIndex );
} else {
item = this.menuItems.eq( this.element[ 0 ].selectedIndex );
filter += ":not(.ui-state-disabled)";
}
if ( direction === "first" || direction === "last" ) {
next = item[ direction === "first" ? "prevAll" : "nextAll" ]( filter ).eq( -1 );
} else {
next = item[ direction + "All" ]( filter ).eq( 0 );
}
if ( next.length ) {
this.menuInstance.focus( event, next );
}
},
_getSelectedItem: function() {
return this.menuItems.eq( this.element[ 0 ].selectedIndex );
},
_toggle: function( event ) {
this[ this.isOpen ? "close" : "open" ]( event );
},
_setSelection: function() {
var selection;
if ( !this.range ) {
return;
}
if ( window.getSelection ) {
selection = window.getSelection();
selection.removeAllRanges();
selection.addRange( this.range );
// support: IE8
} else {
this.range.select();
}
// support: IE
// Setting the text selection kills the button focus in IE, but
// restoring the focus doesn't kill the selection.
this.button.focus();
},
_documentClick: {
mousedown: function( event ) {
if ( !this.isOpen ) {
return;
}
if ( !$( event.target ).closest( ".ui-selectmenu-menu, #" + 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 );
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._setText( this.buttonText, item.label );
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" ) {
this.button.find( "span.ui-icon" )
.removeClass( this.options.icons.button )
.addClass( value.button );
}
this._super( key, value );
if ( key === "appendTo" ) {
this.menuWrap.appendTo( this._appendTo() );
}
if ( key === "disabled" ) {
this.menuInstance.option( "disabled", value );
this.button
.toggleClass( "ui-state-disabled", value )
.attr( "aria-disabled", value );
this.element.prop( "disabled", value );
if ( value ) {
this.button.attr( "tabindex", -1 );
this.close();
} else {
this.button.attr( "tabindex", 0 );
}
}
if ( key === "width" ) {
this._resizeButton();
}
},
_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" );
}
if ( !element.length ) {
element = this.document[ 0 ].body;
}
return element;
},
_toggleAttr: function() {
this.button
.toggleClass( "ui-corner-top", this.isOpen )
.toggleClass( "ui-corner-all", !this.isOpen )
.attr( "aria-expanded", this.isOpen );
this.menuWrap.toggleClass( "ui-selectmenu-open", this.isOpen );
this.menu.attr( "aria-hidden", !this.isOpen );
},
_resizeButton: function() {
var width = this.options.width;
if ( !width ) {
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() {
return { disabled: this.element.prop( "disabled" ) };
},
_parseOptions: function( options ) {
var data = [];
options.each(function( index, item ) {
var option = $( item ),
optgroup = option.parent( "optgroup" );
data.push({
element: option,
index: index,
value: option.val(),
label: option.text(),
optgroup: optgroup.attr( "label" ) || "",
disabled: optgroup.prop( "disabled" ) || option.prop( "disabled" )
});
});
this.items = data;
},
_destroy: function() {
this.menuWrap.remove();
this.button.remove();
this.element.show();
this.element.removeUniqueId();
this.label.attr( "for", this.ids.element );
}
});
}));