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| /* =================================================================================================
* TransMenu
* March, 2003
* Customizable multi-level animated DHTML menus with transparency.
*
* Copyright Aaron Boodman (www.youngpup.net)
* =================================================================================================
* updates:
* 04.19.04 fixed cascade problem with menus nested greater than two levels.
* 12.23.03 added hideCurrent for menu actuators with no menus. renamed to TransMenu.
* 04.18.03 fixed render bug in IE 5.0 Mac by removing that browser from compatibility table ;)
* also made gecko check a little more strict by specifying build no.
* ============================================================================================== */
//==================================================================================================
// Configuration properties
//==================================================================================================
TransMenu.spacerGif = "Images/x.gif"; // path to a transparent spacer gif
TransMenu.dingbatOn = "Images/submenu-on.gif"; // path to the active sub menu dingbat
TransMenu.dingbatOff = "Images/submenu-off.gif"; // path to the inactive sub menu dingbat
TransMenu.dingbatSize = 14; // size of the dingbat (square shape assumed)
TransMenu.menuPadding = 5; // padding between menu border and items grid
TransMenu.itemPadding = 3; // additional padding around each item
TransMenu.shadowSize = 2; // size of shadow under menu
TransMenu.shadowOffset = 3; // distance shadow should be offset from leading edge
TransMenu.shadowColor = "#888"; // color of shadow (transparency is set in CSS)
TransMenu.shadowPng = "Images/grey-40.png"; // a PNG graphic to serve as the shadow for mac IE5
TransMenu.backgroundColor = "white"; // color of the background (transparency set in CSS)
TransMenu.backgroundPng = "Images/white-90.png"; // a PNG graphic to server as the background for mac IE5
TransMenu.hideDelay = 1000; // number of milliseconds to wait before hiding a menu
TransMenu.slideTime = 400; // number of milliseconds it takes to open and close a menu
//==================================================================================================
// Internal use properties
//==================================================================================================
TransMenu.reference = {topLeft:1,topRight:2,bottomLeft:3,bottomRight:4};
TransMenu.direction = {down:1,right:2};
TransMenu.registry = [];
TransMenu._maxZ = 100;
//==================================================================================================
// Static methods
//==================================================================================================
// supporting win ie5+, mac ie5.1+ and gecko >= mozilla 1.0
TransMenu.isSupported = function() {
var ua = navigator.userAgent.toLowerCase();
var pf = navigator.platform.toLowerCase();
var an = navigator.appName;
var r = false;
if (ua.indexOf("gecko") > -1 && navigator.productSub >= 20020605) r = true; // gecko >= moz 1.0
else if (an == "Microsoft Internet Explorer") {
if (document.getElementById) { // ie5.1+ mac,win
if (pf.indexOf("mac") == 0) {
r = /msie (\d(.\d*)?)/.test(ua) && Number(RegExp.$1) >= 5.1;
}
else r = true;
}
}
return r;
}
// call this in onload once menus have been created
TransMenu.initialize = function() {
for (var i = 0, menu = null; menu = this.registry[i]; i++) {
menu.initialize();
}
}
// call this in document body to write out menu html
TransMenu.renderAll = function() {
var aMenuHtml = [];
for (var i = 0, menu = null; menu = this.registry[i]; i++) {
aMenuHtml[i] = menu.toString();
}
document.write(aMenuHtml.join(""));
}
//==================================================================================================
// TransMenu constructor (only called internally)
//==================================================================================================
// oActuator : The thing that causes the menu to be shown when it is mousedover. Either a
// reference to an HTML element, or a TransMenuItem from an existing menu.
// iDirection : The direction to slide out. One of TransMenu.direction.
// iLeft : Left pixel offset of menu from actuator
// iTop : Top pixel offset of menu from actuator
// iReferencePoint : Corner of actuator to measure from. One of TransMenu.referencePoint.
// parentMenuSet : Menuset this menu will be added to.
//==================================================================================================
function TransMenu(oActuator, iDirection, iLeft, iTop, iReferencePoint, parentMenuSet) {
// public methods
this.addItem = addItem;
this.addMenu = addMenu;
this.toString = toString;
this.initialize = initialize;
this.isOpen = false;
this.show = show;
this.hide = hide;
this.items = [];
// events
this.onactivate = new Function(); // when the menu starts to slide open
this.ondeactivate = new Function(); // when the menu finishes sliding closed
this.onmouseover = new Function(); // when the menu has been moused over
this.onqueue = new Function(); // hack .. when the menu sets a timer to be closed a little while in the future
this.ondequeue = new Function();
// initialization
this.index = TransMenu.registry.length;
TransMenu.registry[this.index] = this;
var id = "TransMenu" + this.index;
var contentHeight = null;
var contentWidth = null;
var childMenuSet = null;
var animating = false;
var childMenus = [];
var slideAccel = -1;
var elmCache = null;
var ready = false;
var _this = this;
var a = null;
var pos = iDirection == TransMenu.direction.down ? "top" : "left";
var dim = null;
// private and public method implimentations
function addItem(sText, sUrl) {
var item = new TransMenuItem(sText, sUrl, this);
item._index = this.items.length;
this.items[item._index] = item;
}
function addMenu(oMenuItem) {
if (!oMenuItem.parentMenu == this) throw new Error("Cannot add a menu here");
if (childMenuSet == null) childMenuSet = new TransMenuSet(TransMenu.direction.right, -5, 2, TransMenu.reference.topRight);
var m = childMenuSet.addMenu(oMenuItem);
childMenus[oMenuItem._index] = m;
m.onmouseover = child_mouseover;
m.ondeactivate = child_deactivate;
m.onqueue = child_queue;
m.ondequeue = child_dequeue;
return m;
}
function initialize() {
initCache();
initEvents();
initSize();
ready = true;
}
function show() {
//dbg_dump("show");
if (ready) {
_this.isOpen = true;
animating = true;
setContainerPos();
elmCache["clip"].style.visibility = "visible";
elmCache["clip"].style.zIndex = TransMenu._maxZ++;
//dbg_dump("maxZ: " + TransMenu._maxZ);
slideStart();
_this.onactivate();
}
}
function hide() {
if (ready) {
_this.isOpen = false;
animating = true;
for (var i = 0, item = null; item = elmCache.item[i]; i++)
dehighlight(item);
if (childMenuSet) childMenuSet.hide();
slideStart();
_this.ondeactivate();
}
}
function setContainerPos() {
var sub = oActuator.constructor == TransMenuItem;
var act = sub ? oActuator.parentMenu.elmCache["item"][oActuator._index] : oActuator;
var el = act;
var x = 0;
var y = 0;
var minX = 0;
var maxX = (window.innerWidth ? window.innerWidth : document.body.clientWidth) - parseInt(elmCache["clip"].style.width);
var minY = 0;
var maxY = (window.innerHeight ? window.innerHeight : document.body.clientHeight) - parseInt(elmCache["clip"].style.height);
// add up all offsets... subtract any scroll offset
while (sub ? el.parentNode.className.indexOf("transMenu") == -1 : el.offsetParent) {
x += el.offsetLeft;
y += el.offsetTop;
if (el.scrollLeft) x -= el.scrollLeft;
if (el.scrollTop) y -= el.scrollTop;
el = el.offsetParent;
}
if (oActuator.constructor == TransMenuItem) {
x += parseInt(el.parentNode.style.left);
y += parseInt(el.parentNode.style.top);
}
switch (iReferencePoint) {
case TransMenu.reference.topLeft:
break;
case TransMenu.reference.topRight:
x += act.offsetWidth;
break;
case TransMenu.reference.bottomLeft:
y += act.offsetHeight;
break;
case TransMenu.reference.bottomRight:
x += act.offsetWidth;
y += act.offsetHeight;
break;
}
x += iLeft;
y += iTop;
x = Math.max(Math.min(x, maxX), minX);
y = Math.max(Math.min(y, maxY), minY);
elmCache["clip"].style.left = x + "px";
elmCache["clip"].style.top = y + "px";
}
function slideStart() {
var x0 = parseInt(elmCache["content"].style[pos]);
var x1 = _this.isOpen ? 0 : -dim;
if (a != null) a.stop();
a = new Accelimation(x0, x1, TransMenu.slideTime, slideAccel);
a.onframe = slideFrame;
a.onend = slideEnd;
a.start();
}
function slideFrame(x) {
elmCache["content"].style[pos] = x + "px";
}
function slideEnd() {
if (!_this.isOpen) elmCache["clip"].style.visibility = "hidden";
animating = false;
}
function initSize() {
// everything is based off the size of the items table...
var ow = elmCache["items"].offsetWidth;
var oh = elmCache["items"].offsetHeight;
var ua = navigator.userAgent.toLowerCase();
// clipping container should be ow/oh + the size of the shadow
elmCache["clip"].style.width = ow + TransMenu.shadowSize + 2 + "px";
elmCache["clip"].style.height = oh + TransMenu.shadowSize + 2 + "px";
// same with content...
elmCache["content"].style.width = ow + TransMenu.shadowSize + "px";
elmCache["content"].style.height = oh + TransMenu.shadowSize + "px";
contentHeight = oh + TransMenu.shadowSize;
contentWidth = ow + TransMenu.shadowSize;
dim = iDirection == TransMenu.direction.down ? contentHeight : contentWidth;
// set initially closed
elmCache["content"].style[pos] = -dim - TransMenu.shadowSize + "px";
elmCache["clip"].style.visibility = "hidden";
// if *not* mac/ie 5
if (ua.indexOf("mac") == -1 || ua.indexOf("gecko") > -1) {
// set background div to offset size
elmCache["background"].style.width = ow + "px";
elmCache["background"].style.height = oh + "px";
elmCache["background"].style.backgroundColor = TransMenu.backgroundColor;
// shadow left starts at offset left and is offsetHeight pixels high
elmCache["shadowRight"].style.left = ow + "px";
elmCache["shadowRight"].style.height = oh - (TransMenu.shadowOffset - TransMenu.shadowSize) + "px";
elmCache["shadowRight"].style.backgroundColor = TransMenu.shadowColor;
// shadow bottom starts at offset height and is offsetWidth - shadowOffset
// pixels wide (we don't want the bottom and right shadows to overlap or we
// get an extra bright bottom-right corner)
elmCache["shadowBottom"].style.top = oh + "px";
elmCache["shadowBottom"].style.width = ow - TransMenu.shadowOffset + "px";
elmCache["shadowBottom"].style.backgroundColor = TransMenu.shadowColor;
}
// mac ie is a little different because we use a PNG for the transparency
else {
// set background div to offset size
elmCache["background"].firstChild.src = TransMenu.backgroundPng;
elmCache["background"].firstChild.width = ow;
elmCache["background"].firstChild.height = oh;
// shadow left starts at offset left and is offsetHeight pixels high
elmCache["shadowRight"].firstChild.src = TransMenu.shadowPng;
elmCache["shadowRight"].style.left = ow + "px";
elmCache["shadowRight"].firstChild.width = TransMenu.shadowSize;
elmCache["shadowRight"].firstChild.height = oh - (TransMenu.shadowOffset - TransMenu.shadowSize);
// shadow bottom starts at offset height and is offsetWidth - shadowOffset
// pixels wide (we don't want the bottom and right shadows to overlap or we
// get an extra bright bottom-right corner)
elmCache["shadowBottom"].firstChild.src = TransMenu.shadowPng;
elmCache["shadowBottom"].style.top = oh + "px";
elmCache["shadowBottom"].firstChild.height = TransMenu.shadowSize;
elmCache["shadowBottom"].firstChild.width = ow - TransMenu.shadowOffset;
}
}
function initCache() {
var menu = document.getElementById(id);
var all = menu.all ? menu.all : menu.getElementsByTagName("*"); // IE/win doesn't support * syntax, but does have the document.all thing
elmCache = {};
elmCache["clip"] = menu;
elmCache["item"] = [];
for (var i = 0, elm = null; elm = all[i]; i++) {
switch (elm.className) {
case "items":
case "content":
case "background":
case "shadowRight":
case "shadowBottom":
elmCache[elm.className] = elm;
break;
case "item":
elm._index = elmCache["item"].length;
elmCache["item"][elm._index] = elm;
break;
}
}
// hack!
_this.elmCache = elmCache;
}
function initEvents() {
// hook item mouseover
for (var i = 0, item = null; item = elmCache.item[i]; i++) {
item.onmouseover = item_mouseover;
item.onmouseout = item_mouseout;
item.onclick = item_click;
}
// hook actuation
if (typeof oActuator.tagName != "undefined") {
oActuator.onmouseover = actuator_mouseover;
oActuator.onmouseout = actuator_mouseout;
}
// hook menu mouseover
elmCache["content"].onmouseover = content_mouseover;
elmCache["content"].onmouseout = content_mouseout;
}
function highlight(oRow) {
oRow.className = "item hover";
if (childMenus[oRow._index])
oRow.lastChild.firstChild.src = TransMenu.dingbatOn;
}
function dehighlight(oRow) {
oRow.className = "item";
if (childMenus[oRow._index])
oRow.lastChild.firstChild.src = TransMenu.dingbatOff;
}
function item_mouseover() {
if (!animating) {
highlight(this);
if (childMenus[this._index])
childMenuSet.showMenu(childMenus[this._index]);
else if (childMenuSet) childMenuSet.hide();
}
}
function item_mouseout() {
if (!animating) {
if (childMenus[this._index])
childMenuSet.hideMenu(childMenus[this._index]);
else // otherwise child_deactivate will do this
dehighlight(this);
}
}
function item_click() {
if (!animating) {
if (_this.items[this._index].url)
location.href = _this.items[this._index].url;
}
}
function actuator_mouseover() {
parentMenuSet.showMenu(_this);
}
function actuator_mouseout() {
parentMenuSet.hideMenu(_this);
}
function content_mouseover() {
if (!animating) {
parentMenuSet.showMenu(_this);
_this.onmouseover();
}
}
function content_mouseout() {
if (!animating) {
parentMenuSet.hideMenu(_this);
}
}
function child_mouseover() {
if (!animating) {
parentMenuSet.showMenu(_this);
}
}
function child_deactivate() {
for (var i = 0; i < childMenus.length; i++) {
if (childMenus[i] == this) {
dehighlight(elmCache["item"][i]);
break;
}
}
}
function child_queue() {
parentMenuSet.hideMenu(_this);
}
function child_dequeue() {
parentMenuSet.showMenu(_this);
}
function toString() {
var aHtml = [];
var sClassName = "transMenu" + (oActuator.constructor != TransMenuItem ? " top" : "");
for (var i = 0, item = null; item = this.items[i]; i++) {
aHtml[i] = item.toString(childMenus[i]);
}
return '<div id="' + id + '" class="' + sClassName + '">' +
'<div class="content"><table class="items" cellpadding="0" cellspacing="0" border="0">' +
'<tr><td colspan="2"><img src="' + TransMenu.spacerGif + '" width="1" height="' + TransMenu.menuPadding + '"></td></tr>' +
aHtml.join('') +
'<tr><td colspan="2"><img src="' + TransMenu.spacerGif + '" width="1" height="' + TransMenu.menuPadding + '"></td></tr></table>' +
'<div class="shadowBottom"><img src="' + TransMenu.spacerGif + '" width="1" height="1"></div>' +
'<div class="shadowRight"><img src="' + TransMenu.spacerGif + '" width="1" height="1"></div>' +
'<div class="background"><img src="' + TransMenu.spacerGif + '" width="1" height="1"></div>' +
'</div></div>';
}
}
//==================================================================================================
// TransMenuSet
//==================================================================================================
// iDirection : The direction to slide out. One of TransMenu.direction.
// iLeft : Left pixel offset of menus from actuator
// iTop : Top pixel offset of menus from actuator
// iReferencePoint : Corner of actuator to measure from. One of TransMenu.referencePoint.
//==================================================================================================
TransMenuSet.registry = [];
function TransMenuSet(iDirection, iLeft, iTop, iReferencePoint) {
// public methods
this.addMenu = addMenu;
this.showMenu = showMenu;
this.hideMenu = hideMenu;
this.hide = hide;
this.hideCurrent = hideCurrent;
// initialization
var menus = [];
var _this = this;
var current = null;
this.index = TransMenuSet.registry.length;
TransMenuSet.registry[this.index] = this;
// method implimentations...
function addMenu(oActuator) {
var m = new TransMenu(oActuator, iDirection, iLeft, iTop, iReferencePoint, this);
menus[menus.length] = m;
return m;
}
function showMenu(oMenu) {
if (oMenu != current) {
// close currently open menu
if (current != null) hide(current);
// set current menu to this one
current = oMenu;
// if this menu is closed, open it
oMenu.show();
}
else {
// hide pending calls to close this menu
cancelHide(oMenu);
}
}
function hideMenu(oMenu) {
//dbg_dump("hideMenu a " + oMenu.index);
if (current == oMenu && oMenu.isOpen) {
//dbg_dump("hideMenu b " + oMenu.index);
if (!oMenu.hideTimer) scheduleHide(oMenu);
}
}
function scheduleHide(oMenu) {
//dbg_dump("scheduleHide " + oMenu.index);
oMenu.onqueue();
oMenu.hideTimer = window.setTimeout("TransMenuSet.registry[" + _this.index + "].hide(TransMenu.registry[" + oMenu.index + "])", TransMenu.hideDelay);
}
function cancelHide(oMenu) {
//dbg_dump("cancelHide " + oMenu.index);
if (oMenu.hideTimer) {
oMenu.ondequeue();
window.clearTimeout(oMenu.hideTimer);
oMenu.hideTimer = null;
}
}
function hide(oMenu) {
if (!oMenu && current) oMenu = current;
if (oMenu && current == oMenu && oMenu.isOpen) {
hideCurrent();
}
}
function hideCurrent() {
if (null != current) {
cancelHide(current);
current.hideTimer = null;
current.hide();
current = null;
}
}
}
//==================================================================================================
// TransMenuItem (internal)
// represents an item in a dropdown
//==================================================================================================
// sText : The item display text
// sUrl : URL to load when the item is clicked
// oParent : Menu this item is a part of
//==================================================================================================
function TransMenuItem(sText, sUrl, oParent) {
this.toString = toString;
this.text = sText;
this.url = sUrl;
this.parentMenu = oParent;
function toString(bDingbat) {
var sDingbat = bDingbat ? TransMenu.dingbatOff : TransMenu.spacerGif;
var iEdgePadding = TransMenu.itemPadding + TransMenu.menuPadding;
var sPaddingLeft = "padding:" + TransMenu.itemPadding + "px; padding-left:" + iEdgePadding + "px;"
var sPaddingRight = "padding:" + TransMenu.itemPadding + "px; padding-right:" + iEdgePadding + "px;"
return '<tr class="item"><td nowrap style="' + sPaddingLeft + '">' +
sText + '</td><td width="14" style="' + sPaddingRight + '">' +
'<img src="' + sDingbat + '" width="14" height="14"></td></tr>';
}
}
//=====================================================================
// Accel[erated] [an]imation object
// change a property of an object over time in an accelerated fashion
//=====================================================================
// obj : reference to the object whose property you'd like to animate
// prop : property you would like to change eg: "left"
// to : final value of prop
// time : time the animation should take to run
// zip : optional. specify the zippiness of the acceleration. pick a
// number between -1 and 1 where -1 is full decelerated, 1 is
// full accelerated, and 0 is linear (no acceleration). default
// is 0.
// unit : optional. specify the units for use with prop. default is
// "px".
//=====================================================================
// bezier functions lifted from the lib_animation.js file in the
// 13th Parallel API. www.13thparallel.org
//=====================================================================
function Accelimation(from, to, time, zip) {
if (typeof zip == "undefined") zip = 0;
if (typeof unit == "undefined") unit = "px";
this.x0 = from;
this.x1 = to;
this.dt = time;
this.zip = -zip;
this.unit = unit;
this.timer = null;
this.onend = new Function();
this.onframe = new Function();
}
//=====================================================================
// public methods
//=====================================================================
// after you create an accelimation, you call this to start it-a runnin'
Accelimation.prototype.start = function() {
this.t0 = new Date().getTime();
this.t1 = this.t0 + this.dt;
var dx = this.x1 - this.x0;
this.c1 = this.x0 + ((1 + this.zip) * dx / 3);
this.c2 = this.x0 + ((2 + this.zip) * dx / 3);
Accelimation._add(this);
}
// and if you need to stop it early for some reason...
Accelimation.prototype.stop = function() {
Accelimation._remove(this);
}
//=====================================================================
// private methods
//=====================================================================
// paints one frame. gets called by Accelimation._paintAll.
Accelimation.prototype._paint = function(time) {
if (time < this.t1) {
var elapsed = time - this.t0;
this.onframe(Accelimation._getBezier(elapsed/this.dt,this.x0,this.x1,this.c1,this.c2));
}
else this._end();
}
// ends the animation
Accelimation.prototype._end = function() {
Accelimation._remove(this);
this.onframe(this.x1);
this.onend();
}
//=====================================================================
// static methods (all private)
//=====================================================================
// add a function to the list of ones to call periodically
Accelimation._add = function(o) {
var index = this.instances.length;
this.instances[index] = o;
// if this is the first one, start the engine
if (this.instances.length == 1) {
this.timerID = window.setInterval("Accelimation._paintAll()", this.targetRes);
}
} |
