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/*
* jQuery UI menubar
*
* backported from Michael Lang's fork: http://www.nexul.com/prototypes/toolbar/demo.html
*/
(function($) {
// TODO take non-menubar buttons into account
$.widget("ui.menubar", {
options: {
buttons: false,
menuIcon: false
},
_create: function() {
var self = this;
var items = this.items = this.element.children("button, a");
items.slice(1).attr("tabIndex", -1);
var o = this.options;
this.element.addClass('ui-menubar ui-widget-header ui-helper-clearfix');
this._focusable(items);
this._hoverable(items);
items.next("ul").each(function(i, elm) {
$(elm).menu({
select: function(event, ui) {
ui.item.parents("ul:last").hide()
self.options.select.apply(this, arguments);
}
}).hide().keydown(function(event) {
var menu = $(this);
if (menu.is(":hidden"))
return;
event.stopPropagation();
switch (event.keyCode) {
case $.ui.keyCode.LEFT:
self._left(event);
event.preventDefault();
break;
case $.ui.keyCode.RIGHT:
self._right(event);
event.preventDefault();
break;
};
}).blur(function( event ) {
self._close( event );
});
});
items.each(function() {
var input = $(this),
menu = input.next("ul");
input.bind("click focus mouseenter", function(event) {
// ignore triggered focus event
if (event.type == "focus" && !event.originalEvent) {
return;
}
event.preventDefault();
event.stopPropagation();
if (menu.is(":visible") && self.active && self.active[0] == menu[0]) {
self._close();
return;
}
if (self.open || event.type == "click") {
self._open(event, menu);
}
})
.bind( "keydown", function( event ) {
switch ( event.keyCode ) {
case $.ui.keyCode.SPACE:
case $.ui.keyCode.UP:
case $.ui.keyCode.DOWN:
self._open( event, $( this ).next() );
event.preventDefault();
break;
case $.ui.keyCode.LEFT:
self._prev( event, $( this ) );
event.preventDefault();
break;
case $.ui.keyCode.RIGHT:
self._next( event, $( this ) );
event.preventDefault();
break;
}
})
.addClass("ui-button ui-widget ui-button-text-only ui-menubar-link")
.wrapInner("<span class='ui-button-text'></span>");
if (o.menuIcon) {
input.addClass("ui-state-default").append("<span class='ui-button-icon-secondary ui-icon ui-icon-triangle-1-s'></span>");
input.removeClass("ui-button-text-only").addClass("ui-button-text-icon-secondary");
}
if (!o.buttons) {
input.addClass('ui-menubar-link').removeClass('ui-state-default');
};
});
self._bind(document, {
click: function(event) {
if (self.open && !$(event.target).closest(".ui-menubar").length) {
self._close();
}
}
})
self._bind({
keyup: function(event) {
if (event.keyCode == $.ui.keyCode.ESCAPE && self.open) {
if (self.active.menu("left", event) !== true) {
var active = self.active;
self.active.blur();
active.prev().focus();
}
}
}
});
},
_close: function() {
this.active.menu("closeAll").hide();
this.active.prev().removeClass("ui-state-active").removeAttr("tabIndex");
this.active = null;
var self = this;
// delay for the next focus event to see it as still "open"
self.timer = setTimeout(function() {
self.open = false;
}, 13);
},
_open: function(event, menu) {
// on a single-button menubar, ignore reopening the same menu
if (this.active && this.active[0] == menu[0]) {
return;
}
// almost the same as _close above, but don't remove tabIndex
if (this.active) {
this.active.menu("closeAll").hide();
this.active.prev().removeClass("ui-state-active");
}
clearTimeout(this.timer);
this.open = true;
// 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
}).focus();
},
_prev: function( event, button ) {
button.attr("tabIndex", -1);
var prev = button.prevAll( ".ui-button" ).eq( 0 );
if (prev.length) {
prev.removeAttr("tabIndex")[0].focus();
} else {
this.element.children(".ui-button:last").removeAttr("tabIndex")[0].focus();
}
},
_next: function( event, button ) {
button.attr("tabIndex", -1);
var next = button.nextAll( ".ui-button" ).eq( 0 );
if (next.length) {
next.removeAttr("tabIndex")[0].focus();
} else {
this.element.children(".ui-button:first").removeAttr("tabIndex")[0].focus();
}
},
_left: function(event) {
var prev = this.active.prevAll( ".ui-menu" ).eq( 0 );
if (prev.length) {
this._open(event, prev);
} else {
this._open(event, this.element.children(".ui-menu:last"));
}
},
_right: function(event) {
var next = this.active.nextAll( ".ui-menu" ).eq( 0 );
if (next.length) {
this._open(event, next);
} else {
this._open(event, this.element.children(".ui-menu:first"));
}
}
});
}(jQuery));
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