1 files changed, 177 insertions, 0 deletions
diff --git a/ui/jquery.ui.menu.js b/ui/jquery.ui.menu.js
new file mode 100644
index 000000000..2055f02df
--- /dev/null
+++ b/ui/jquery.ui.menu.js
@@ -0,0 +1,177 @@
+/*
+ * jQuery UI Menu @VERSION
+ * 
+ * Copyright (c) 2010 AUTHORS.txt (http://jqueryui.com/about)
+ * Dual licensed under the MIT (MIT-LICENSE.txt)
+ * and GPL (GPL-LICENSE.txt) licenses.
+ *
+ * http://docs.jquery.com/UI/Menu
+ *
+ * Depends:
+ *	jquery.ui.core.js
+ *  jquery.ui.widget.js
+ */
+(function($) {
+
+$.widget("ui.menu", {
+	_create: function() {
+		var self = this;
+		this.element
+			.addClass("ui-menu ui-widget ui-widget-content ui-corner-all")
+			.attr({
+				role: "listbox",
+				"aria-activedescendant": "ui-active-menuitem"
+			})
+			.click(function( event ) {
+				if ( !$( event.target ).closest( ".ui-menu-item a" ).length ) {
+					return;
+				}
+				// temporary
+				event.preventDefault();
+				self.select( event );
+			});
+		this.refresh();
+	},
+	
+	refresh: function() {
+		var self = this;
+
+		// don't refresh list items that are already adapted
+		var items = this.element.children("li:not(.ui-menu-item):has(a)")
+			.addClass("ui-menu-item")
+			.attr("role", "menuitem");
+		
+		items.children("a")
+			.addClass("ui-corner-all")
+			.attr("tabindex", -1)
+			// mouseenter doesn't work with event delegation
+			.mouseenter(function( event ) {
+				self.activate( event, $(this).parent() );
+			})
+			.mouseleave(function() {
+				self.deactivate();
+			});
+	},
+
+	activate: function( event, item ) {
+		this.deactivate();
+		if (this.hasScroll()) {
+			var offset = item.offset().top - this.element.offset().top,
+				scroll = this.element.attr("scrollTop"),
+				elementHeight = this.element.height();
+			if (offset < 0) {
+				this.element.attr("scrollTop", scroll + offset);
+			} else if (offset > elementHeight) {
+				this.element.attr("scrollTop", scroll + offset - elementHeight + item.height());
+			}
+		}
+		this.active = item.eq(0)
+			.children("a")
+				.addClass("ui-state-hover")
+				.attr("id", "ui-active-menuitem")
+			.end();
+		this._trigger("focus", event, { item: item });
+	},
+
+	deactivate: function() {
+		if (!this.active) { return; }
+
+		this.active.children("a")
+			.removeClass("ui-state-hover")
+			.removeAttr("id");
+		this._trigger("blur");
+		this.active = null;
+	},
+
+	next: function(event) {
+		this.move("next", ".ui-menu-item:first", event);
+	},
+
+	previous: function(event) {
+		this.move("prev", ".ui-menu-item:last", event);
+	},
+
+	first: function() {
+		return this.active && !this.active.prev().length;
+	},
+
+	last: function() {
+		return this.active && !this.active.next().length;
+	},
+
+	move: function(direction, edge, event) {
+		if (!this.active) {
+			this.activate(event, this.element.children(edge));
+			return;
+		}
+		var next = this.active[direction + "All"](".ui-menu-item").eq(0);
+		if (next.length) {
+			this.activate(event, next);
+		} else {
+			this.activate(event, this.element.children(edge));
+		}
+	},
+
+	// TODO merge with previousPage
+	nextPage: function(event) {
+		if (this.hasScroll()) {
+			// TODO merge with no-scroll-else
+			if (!this.active || this.last()) {
+				this.activate(event, this.element.children(":first"));
+				return;
+			}
+			var base = this.active.offset().top,
+				height = this.element.height(),
+				result = this.element.children("li").filter(function() {
+					var close = $(this).offset().top - base - height + $(this).height();
+					// TODO improve approximation
+					return close < 10 && close > -10;
+				});
+
+			// TODO try to catch this earlier when scrollTop indicates the last page anyway
+			if (!result.length) {
+				result = this.element.children(":last");
+			}
+			this.activate(event, result);
+		} else {
+			this.activate(event, this.element.children(!this.active || this.last() ? ":first" : ":last"));
+		}
+	},
+
+	// TODO merge with nextPage
+	previousPage: function(event) {
+		if (this.hasScroll()) {
+			// TODO merge with no-scroll-else
+			if (!this.active || this.first()) {
+				this.activate(event, this.element.children(":last"));
+				return;
+			}
+
+			var base = this.active.offset().top,
+				height = this.element.height();
+				result = this.element.children("li").filter(function() {
+					var close = $(this).offset().top - base + height - $(this).height();
+					// TODO improve approximation
+					return close < 10 && close > -10;
+				});
+
+			// TODO try to catch this earlier when scrollTop indicates the last page anyway
+			if (!result.length) {
+				result = this.element.children(":first");
+			}
+			this.activate(event, result);
+		} else {
+			this.activate(event, this.element.children(!this.active || this.first() ? ":last" : ":first"));
+		}
+	},
+
+	hasScroll: function() {
+		return this.element.height() < this.element.attr("scrollHeight");
+	},
+
+	select: function( event ) {
+		this._trigger("selected", event, { item: this.active });
+	}
+});
+
+}(jQuery));