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/**
* dropDownMenu v0.5 sw edition
* An easy to implement dropDown Menu for Websites, that may be based on styled list tags
*
* Works for IE 5.5+ PC, Mozilla 1+ all Plattforms, Opera 7+
*
* Copyright (c) 2004 Knallgrau New Medias Solutions GmbH, Vienna - Austria
*
* Original written by Matthias Platzer at http://knallgrau.at
*
* Modified by Sven Wappler http://www.wappler.eu
*
* Use it as you need it
* It is distributed under a BSD style license
*/
/**
* Container Class (Prototype) for the dropDownMenu
*
* @param idOrElement String|HTMLElement root Node of the menu (ul)
* @param name String name of the variable that stores the result
* of this constructor function
* @param customConfigFunction Function optional config function to override the default settings
* for an example see Menu.prototype.config
*/
var Menu = Class.create();
Menu.prototype = {
initialize: function(idOrElement, name, customConfigFunction) {
this.name = name;
this.type = "menu";
this.closeDelayTimer = null;
this.closingMenuItem = null;
this.config();
if (typeof customConfigFunction == "function") {
this.customConfig = customConfigFunction;
this.customConfig();
}
this.rootContainer = new MenuContainer(idOrElement, this);
},
config: function() {
this.collapseBorders = true;
this.quickCollapse = true;
this.closeDelayTime = 500;
}
}
var MenuContainer = Class.create();
MenuContainer.prototype = {
initialize: function(idOrElement, parent) {
this.type = "menuContainer";
this.menuItems = [];
this.init(idOrElement, parent);
},
init: function(idOrElement, parent) {
this.element = $(idOrElement);
if (!this.element) return;
this.parent = parent;
this.parentMenu = (this.type == "menuContainer") ? ((parent) ? parent.parent : null) : parent;
this.root = parent instanceof Menu ? parent : parent.root;
this.id = this.element.id;
if (this.type == "menuContainer") {
if (this.element.hasClassName("level1")) this.menuType = "horizontal";
else if (this.element.hasClassName("level2")) this.menuType = "dropdown";
else this.menuType = "flyout";
if (this.menuType == "flyout" || this.menuType == "dropdown") {
this.isOpen = false;
Element.setStyle(this.element,{
position: "absolute",
top: "0px",
left: "0px",
visibility: "hidden"});
} else {
this.isOpen = true;
}
} else {
this.isOpen = this.parentMenu.isOpen;
}
var childNodes = this.element.childNodes;
if (childNodes == null) return;
for (var i = 0; i < childNodes.length; i++) {
var node = childNodes[i];
if (node.nodeType == 1) {
if (this.type == "menuContainer") {
if (node.tagName.toLowerCase() == "li") {
this.menuItems.push(new MenuItem(node, this));
}
} else {
if (node.tagName.toLowerCase() == "ul") {
this.subMenu = new MenuContainer(node, this);
}
}
}
}
},
getBorders: function(element) {
var ltrb = ["Left","Top","Right","Bottom"];
var result = {};
for (var i = 0; i < ltrb.length; ++i) {
if (this.element.currentStyle)
var value = parseInt(this.element.currentStyle["border"+ltrb[i]+"Width"]);
else if (window.getComputedStyle)
var value = parseInt(window.getComputedStyle(this.element, "").getPropertyValue("border-"+ltrb[i].toLowerCase()+"-width"));
else
var value = parseInt(this.element.style["border"+ltrb[i]]);
result[ltrb[i].toLowerCase()] = isNaN(value) ? 0 : value;
}
return result;
},
open: function() {
if (this.root.closeDelayTimer) window.clearTimeout(this.root.closeDelayTimer);
this.parentMenu.closeAll(this);
this.isOpen = true;
if (this.menuType == "dropdown") {
Element.setStyle(this.element,{
left: (Position.positionedOffset(this.parent.element)[0]) + "px",
top: (Position.positionedOffset(this.parent.element)[1] + Element.getHeight(this.parent.element)) + "px"
});
} else if (this.menuType == "flyout") {
var parentMenuBorders = this.parentMenu ? this.parentMenu.getBorders() : new Object();
var thisBorders = this.getBorders();
if (
(Position.positionedOffset(this.parentMenu.element)[0] + this.parentMenu.element.offsetWidth + this.element.offsetWidth + 20) >
(window.innerWidth ? window.innerWidth : document.body.offsetWidth)
) {
Element.setStyle(this.element,{
left: (- this.element.offsetWidth - (this.root.collapseBorders ? 0 : parentMenuBorders["left"])) + "px"
});
} else {
Element.setStyle(this.element,{
left: (this.parentMenu.element.offsetWidth - parentMenuBorders["left"] - (this.root.collapseBorders ? Math.min(parentMenuBorders["right"], thisBorders["left"]) : 0)) + "px"
});
}
Element.setStyle(this.element,{
top: (this.parent.element.offsetTop - parentMenuBorders["top"] - this.menuItems[0].element.offsetTop) + "px"
});
}
Element.setStyle(this.element,{visibility: "visible"});
},
close: function() {
Element.setStyle(this.element,{visibility: "hidden"});
this.isOpen = false;
this.closeAll();
},
closeAll: function(trigger) {
for (var i = 0; i < this.menuItems.length; ++i) {
this.menuItems[i].closeItem(trigger);
}
}
}
var MenuItem = Class.create();
Object.extend(Object.extend(MenuItem.prototype, MenuContainer.prototype), {
initialize: function(idOrElement, parent) {
var menuItem = this;
this.type = "menuItem";
this.subMenu;
this.init(idOrElement, parent);
if (this.subMenu) {
this.element.onmouseover = function() {
menuItem.subMenu.open();
}
} else {
if (this.root.quickCollapse) {
this.element.onmouseover = function() {
menuItem.parentMenu.closeAll();
}
}
}
var linkTag = this.element.getElementsByTagName("A")[0];
if (linkTag) {
linkTag.onfocus = this.element.onmouseover;
this.link = linkTag;
this.text = linkTag.text;
}
if (this.subMenu) {
this.element.onmouseout = function() {
if (menuItem.root.openDelayTimer) window.clearTimeout(menuItem.root.openDelayTimer);
if (menuItem.root.closeDelayTimer) window.clearTimeout(menuItem.root.closeDelayTimer);
eval(menuItem.root.name + ".closingMenuItem = menuItem");
menuItem.root.closeDelayTimer = window.setTimeout(menuItem.root.name + ".closingMenuItem.subMenu.close()", menuItem.root.closeDelayTime);
}
}
},
openItem: function() {
this.isOpen = true;
if (this.subMenu) { this.subMenu.open(); }
},
closeItem: function(trigger) {
this.isOpen = false;
if (this.subMenu) {
if (this.subMenu != trigger) this.subMenu.close();
}
}
});
var menu;
function configMenu() {
this.closeDelayTime = 300;
}
function initMenu() {
menu = new Menu('root', 'menu', configMenu);
}
Event.observe(window, 'load', initMenu, false);
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