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/*
* jQuery UI Menubar @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/Menubar
*
* Depends:
* jquery.ui.core.js
* jquery.ui.widget.js
* jquery.ui.position.js
* jquery.ui.menu.js
*/
(function( $ ) {
// TODO when mixing clicking menus and keyboard navigation, focus handling is broken
// there has to be just one item that has tabindex
$.widget( "ui.menubar", {
version: "@VERSION",
options: {
buttons: false,
menuIcon: false
},
_create: function() {
var that = this;
var items = this.items = this.element.children( "li" )
.addClass( "ui-menubar-item" )
.attr( "role", "presentation" )
.children( "button, a" );
// let only the first item receive focus
items.slice(1).attr( "tabIndex", -1 );
this.element
.addClass( "ui-menubar ui-widget-header ui-helper-clearfix" )
.attr( "role", "menubar" );
this._focusable( items );
this._hoverable( items );
items.next( "ul" )
.menu({
select: function( event, ui ) {
ui.item.parents( "ul.ui-menu:last" ).hide();
that._trigger( "select", event, ui );
that._close();
// TODO what is this targetting? there's probably a better way to access it
$(event.target).prev().focus();
}
})
.hide()
.attr({
"aria-hidden": "true",
"aria-expanded": "false"
})
.bind( "keydown.menubar", function( event ) {
var menu = $( this );
if ( menu.is( ":hidden" ) )
return;
switch ( event.keyCode ) {
case $.ui.keyCode.LEFT:
that._left( event );
event.preventDefault();
break;
case $.ui.keyCode.RIGHT:
that._right( event );
event.preventDefault();
break;
};
});
items.each(function() {
var input = $(this),
// TODO menu var is only used on two places, doesn't quite justify the .each
menu = input.next( "ul" );
input.bind( "click.menubar focus.menubar mouseenter.menubar", function( event ) {
// ignore triggered focus event
if ( event.type == "focus" && !event.originalEvent ) {
return;
}
event.preventDefault();
// TODO can we simplify or extractthis check? especially the last two expressions
// there's a similar active[0] == menu[0] check in _open
if ( event.type == "click" && menu.is( ":visible" ) && that.active && that.active[0] == menu[0] ) {
that._close();
return;
}
if ( ( that.open && event.type == "mouseenter" ) || event.type == "click" ) {
that._open( event, menu );
}
})
.bind( "keydown", function( event ) {
switch ( event.keyCode ) {
case $.ui.keyCode.SPACE:
case $.ui.keyCode.UP:
case $.ui.keyCode.DOWN:
that._open( event, $( this ).next() );
event.preventDefault();
break;
case $.ui.keyCode.LEFT:
that._prev( event, $( this ) );
event.preventDefault();
break;
case $.ui.keyCode.RIGHT:
that._next( event, $( this ) );
event.preventDefault();
break;
}
})
.addClass( "ui-button ui-widget ui-button-text-only ui-menubar-link" )
.attr( "role", "menuitem" )
.attr( "aria-haspopup", "true" )
.wrapInner( "<span class='ui-button-text'></span>" );
// TODO review if these options are a good choice, maybe they can be merged
if ( that.options.menuIcon ) {
input.addClass( "ui-state-default" ).append( "<span class='ui-button-icon-secondary ui-icon ui-icon-triangle-1-s'></span>" );
input.removeClass( "ui-button-text-only" ).addClass( "ui-button-text-icon-secondary" );
}
if ( !that.options.buttons ) {
// TODO ui-menubar-link is added above, not needed here?
input.addClass( "ui-menubar-link" ).removeClass( "ui-state-default" );
};
});
that._bind( {
keydown: function( event ) {
if ( event.keyCode == $.ui.keyCode.ESCAPE && that.active && that.active.menu( "left", event ) !== true ) {
var active = that.active;
that.active.blur();
that._close( event );
active.prev().focus();
}
},
focusin: function( event ) {
clearTimeout( that.closeTimer );
},
focusout: function( event ) {
that.closeTimer = setTimeout( function() {
that._close( event );
}, 100);
}
});
},
_destroy : function() {
var items = this.element.children( "li" )
.removeClass( "ui-menubar-item" )
.removeAttr( "role" )
.children( "button, a" );
this.element
.removeClass( "ui-menubar ui-widget-header ui-helper-clearfix" )
.removeAttr( "role" )
.unbind( ".menubar" );
items
.unbind( ".menubar" )
.removeClass( "ui-button ui-widget ui-button-text-only ui-menubar-link ui-state-default" )
.removeAttr( "role" )
.removeAttr( "aria-haspopup" )
// TODO unwrap?
.children( "span.ui-button-text" ).each(function( i, e ) {
var item = $( this );
item.parent().html( item.html() );
})
.end()
.children( ".ui-icon" ).remove();
this.element.find( ":ui-menu" )
.menu( "destroy" )
.show()
.removeAttr( "aria-hidden" )
.removeAttr( "aria-expanded" )
.removeAttr( "tabindex" )
.unbind( ".menubar" );
},
_close: function() {
if ( !this.active || !this.active.length )
return;
this.active
.menu( "closeAll" )
.hide()
.attr({
"aria-hidden": "true",
"aria-expanded": "false"
});
this.active
.prev()
.removeClass( "ui-state-active" )
.removeAttr( "tabIndex" );
this.active = null;
this.open = false;
},
_open: function( event, menu ) {
// on a single-button menubar, ignore reopening the same menu
if ( this.active && this.active[0] == menu[0] ) {
return;
}
// TODO refactor, almost the same as _close above, but don't remove tabIndex
if ( this.active ) {
this.active
.menu( "closeAll" )
.hide()
.attr({
"aria-hidden": "true",
"aria-expanded": "false"
});
this.active
.prev()
.removeClass( "ui-state-active" );
}
// set tabIndex -1 to have the button skipped on shift-tab when menu is open (it gets focus)
var button = menu.prev().addClass( "ui-state-active" ).attr( "tabIndex", -1 );
this.active = menu
.show()
.position( {
my: "left top",
at: "left bottom",
of: button
})
.removeAttr( "aria-hidden" )
.attr( "aria-expanded", "true" )
.menu("focus", event, menu.children( "li" ).first() )
// TODO need a comment here why both events are triggered
.focus()
.focusin();
this.open = true;
},
// TODO refactor this and the next three methods
_prev: function( event, button ) {
button.attr( "tabIndex", -1 );
var prev = button.parent().prevAll( "li" ).children( ".ui-button" ).eq( 0 );
if ( prev.length ) {
prev.removeAttr( "tabIndex" )[0].focus();
} else {
var lastItem = this.element.children( "li:last" ).children( ".ui-button:last" );
lastItem.removeAttr( "tabIndex" )[0].focus();
}
},
_next: function( event, button ) {
button.attr( "tabIndex", -1 );
var next = button.parent().nextAll( "li" ).children( ".ui-button" ).eq( 0 );
if ( next.length ) {
next.removeAttr( "tabIndex")[0].focus();
} else {
var firstItem = this.element.children( "li:first" ).children( ".ui-button:first" );
firstItem.removeAttr( "tabIndex" )[0].focus();
}
},
// TODO rename to parent
_left: function( event ) {
var prev = this.active.parent().prevAll( "li:eq(0)" ).children( ".ui-menu" ).eq( 0 );
if ( prev.length ) {
this._open( event, prev );
} else {
var lastItem = this.element.children( "li:last" ).children( ".ui-menu:first" );
this._open( event, lastItem );
}
},
// TODO rename to child (or something like that)
_right: function( event ) {
var next = this.active.parent().nextAll( "li:eq(0)" ).children( ".ui-menu" ).eq( 0 );
if ( next.length ) {
this._open( event, next );
} else {
var firstItem = this.element.children( "li:first" ).children( ".ui-menu:first" );
this._open( event, firstItem );
}
}
});
}( jQuery ));
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