" ),
wrapper = $( "", {
title: item.element.attr( "title" )
} );
if ( item.disabled ) {
this._addClass( li, null, "ui-state-disabled" );
}
this._setText( wrapper, item.label );
return li.append( wrapper ).appendTo( ul );
},
_setText: function( element, value ) {
if ( value ) {
element.text( value );
} else {
element.html( " " );
}
},
_move: function( direction, event ) {
var item, next,
filter = ".ui-menu-item";
if ( this.isOpen ) {
item = this.menuItems.eq( this.focusIndex ).parent( "li" );
} else {
item = this.menuItems.eq( this.element[ 0 ].selectedIndex ).parent( "li" );
filter += ":not(.ui-state-disabled)";
}
if ( direction === "first" || direction === "last" ) {
next = item[ direction === "first" ? "prevAll" : "nextAll" ]( filter ).eq( -1 );
} else {
next = item[ direction + "All" ]( filter ).eq( 0 );
}
if ( next.length ) {
this.menuInstance.focus( event, next );
}
},
_getSelectedItem: function() {
return this.menuItems.eq( this.element[ 0 ].selectedIndex ).parent( "li" );
},
_toggle: function( event ) {
this[ this.isOpen ? "close" : "open" ]( event );
},
_setSelection: function() {
var selection;
if ( !this.range ) {
return;
}
if ( window.getSelection ) {
selection = window.getSelection();
selection.removeAllRanges();
selection.addRange( this.range );
// Support: IE8
} else {
this.range.select();
}
// Support: IE
// Setting the text selection kills the button focus in IE, but
// restoring the focus doesn't kill the selection.
this.button.trigger( "focus" );
},
_documentClick: {
mousedown: function( event ) {
if ( !this.isOpen ) {
return;
}
if ( !$( event.target ).closest( ".ui-selectmenu-menu, #" +
$.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 ) {
if ( item.hidden ) {
return;
}
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 );
}
} ] );
} );