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/*
* jQuery UI menubar
*
* TODO move to jquery.ui.menubar.js
*/
(function($) {
// TODO code formatting
$.widget("ui.menubar", {
options: {
buttons: false,
menuIcon: false
},
_create: function() {
var self = this;
var items = this.items = this.element.children("li")
.addClass("ui-menubar-item")
.attr("role", "presentation")
.children("button, a");
items.slice(1).attr("tabIndex", -1);
var o = this.options;
this.element.addClass('ui-menubar ui-widget-header ui-helper-clearfix').attr("role", "menubar");
this._focusable(items);
this._hoverable(items);
// TODO elm is used just once, so the each probably isn't nedded anymore
items.next("ul").each(function(i, elm) {
$(elm).menu({
select: function(event, ui) {
ui.item.parents("ul.ui-menu:last").hide();
self._trigger( "select", event, ui );
self._close();
// TODO what is this targetting? there's probably a better way to access it
$(event.target).prev().focus();
}
}).hide()
.attr("aria-hidden", "true")
.attr("aria-expanded", "false")
.keydown(function(event) {
var menu = $(this);
if (menu.is(":hidden"))
return;
switch (event.keyCode) {
case $.ui.keyCode.LEFT:
self._left(event);
event.preventDefault();
break;
case $.ui.keyCode.RIGHT:
self._right(event);
event.preventDefault();
break;
};
})
});
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();
// 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") && self.active && self.active[0] == menu[0]) {
self._close();
return;
}
if ((self.open && event.type == "mouseenter") || 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")
.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 (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) {
// TODO ui-menubar-link is added above, not needed here?
input.addClass('ui-menubar-link').removeClass('ui-state-default');
};
});
self._bind({
keydown: function(event) {
// TODO merge the two ifs
if (event.keyCode == $.ui.keyCode.ESCAPE) {
if (self.active && self.active.menu("left", event) !== true) {
var active = self.active;
self.active.blur();
self._close( event );
active.prev().focus();
}
}
},
focusout : function( event ) {
self.closeTimer = setTimeout(function() {
self._close( event );
}, 100);
},
// TODO change order, focusin first
focusin :function( event ) {
clearTimeout(self.closeTimer);
}
});
},
_destroy : function() {
var items = this.element.children("li")
.removeClass("ui-menubar-item")
.removeAttr("role", "presentation")
.children("button, a");
this.element.removeClass('ui-menubar ui-widget-header ui-helper-clearfix').removeAttr("role", "menubar").unbind(".menubar");;
items.unbind("focusin focusout click focus mouseenter keydown");
items
.removeClass("ui-button ui-widget ui-button-text-only ui-menubar-link ui-state-default")
.removeAttr("role", "menuitem")
.removeAttr("aria-haspopup", "true")
.children("span.ui-button-text").each(function(i, e) {
var item = $(this);
item.parent().html(item.html());
})
.end()
.children(".ui-icon").remove();
$(document).unbind(".menubar");
this.element.find(":ui-menu").menu("destroy")
.show()
.removeAttr("aria-hidden", "true")
.removeAttr("aria-expanded", "false")
.removeAttr("tabindex")
.unbind("keydown", "blur");
},
_close: function() {
if (!this.active || !this.active.length)
return;
this.active.menu("closeAll").hide().attr("aria-hidden", "true").attr("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;
}
// almost the same as _close above, but don't remove tabIndex
if (this.active) {
this.active.menu("closeAll").hide().attr("aria-hidden", "true").attr("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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