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/*
* jQuery UI flyoutmenu
*
* backported from Michael Lang's fork: http://www.nexul.com/prototypes/toolbar/demo.html
*/
(function($) {
$.widget("ui.flyoutmenu", {
options: {
position: {
my: "left top",
at: "right top"
}
},
_create: function() {
var self = this;
this.active = this.element;
this.activeItem = this.element.children("li").first();
// hide submenus and create indicator icons
this.element.find("ul").addClass("ui-menu-flyout").hide().prev("a").prepend('<span class="ui-icon ui-icon-carat-1-e"></span>');
this.element.find("ul").andSelf().menu({
select: function(event) {
self._select(event);
},
focus: function(event, ui) {
self.active = ui.item.parent();
self.activeItem = ui.item;
ui.item.parent().find("ul").hide();
var nested = $(">ul", ui.item);
if (nested.length && event.originalEvent && /^mouse/.test(event.originalEvent.type)) {
self._open(nested);
}
}
}).keydown(function(event) {
if (self.element.is(":hidden"))
return;
switch (event.keyCode) {
case $.ui.keyCode.LEFT:
if (self.left(event)) {
event.stopImmediatePropagation();
}
event.preventDefault();
break;
case $.ui.keyCode.RIGHT:
if (self.right(event)) {
event.stopImmediatePropagation();
}
event.preventDefault();
break;
case $.ui.keyCode.ESCAPE:
self.hide();
break;
default:
clearTimeout(self.filterTimer);
var prev = self.previousFilter || "";
var character = String.fromCharCode(event.keyCode);
var skip = false;
if (character == prev) {
skip = true;
} else {
character = prev + character;
}
function escape(value) {
return value.replace(/[-[\]{}()*+?.,\\^$|#\s]/g, "\\$&");
}
var match = self.activeItem.parent("ul").children("li").filter(function() {
// TODO why filter child anchor here, but not in the filter below?
return new RegExp("^" + escape(character), "i").test($("a", this).text());
});
var match = skip && match.index(self.active.next()) != -1 ? match.next() : match;
if (!match.length) {
character = String.fromCharCode(event.keyCode);
// TODO why use self.widget() here instead of self.activeItem??
match = self.widget().children("li").filter(function() {
return new RegExp("^" + escape(character), "i").test($(this).text());
});
}
if (match.length) {
self.activate(event, match);
if (match.length > 1) {
self.previousFilter = character;
self.filterTimer = setTimeout(function() {
delete self.previousFilter;
}, 1000);
} else {
delete self.previousFilter;
}
} else {
delete self.previousFilter;
}
}
});
},
_open: function(submenu) {
// TODO restrict to widget
//only one menu can have items open at a time.
$(document).find(".ui-menu-flyout").not(submenu.parents()).hide();
var position = $.extend({}, {
of: this.activeItem
}, $.type(this.options.position) == "function"
? this.options.position(this.activeItem)
: this.options.position
);
submenu.show().css({
top: 0,
left: 0
}).position(position);
},
_select: function(event) {
event.stopPropagation();
// TODO make _select cancelable?
this._trigger( "select", event, { item: this.activeItem } );
this.hide();
},
left: function(event) {
var newItem = this.activeItem.parents("li").first();
if (newItem.length) {
this.activate(event, newItem);
return true;
}
},
right: function(event) {
var newItem = this.activeItem.children("ul").children("li").first();
if (newItem.length) {
this._open(newItem.parent());
this.activate(event, newItem);
return true;
}
},
activate: function(event, item) {
if (item) {
item.parent().data("menu").widget().show();
item.parent().data("menu").focus(event, item);
}
this.activeItem = item;
this.active = item.parent("ul")
this.active.focus();
},
show: function() {
this.active = this.element;
this.element.show();
},
hide: function() {
this.activeItem = this.element.children("li").first();
this.element.find("ul").andSelf().menu("blur").hide();
}
});
}(jQuery));
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