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<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8" />
<base href="%@">
<script type="text/javascript">
//<![CDATA[
isDebug = false;
// Fade interval in milliseconds
// Make this larger if you experience performance issues
Fadomatic.INTERVAL_MILLIS = 50;
// Creates a fader
// element - The element to fade
// speed - The speed to fade at, from 0.0 to 100.0
// initialOpacity (optional, default 100) - element's starting opacity, 0 to 100
// minOpacity (optional, default 0) - element's minimum opacity, 0 to 100
// maxOpacity (optional, default 0) - element's minimum opacity, 0 to 100
function Fadomatic (element, rate, initialOpacity, minOpacity, maxOpacity) {
this._element = element;
this._intervalId = null;
this._rate = rate;
this._isFadeOut = true;
// Set initial opacity and bounds
// NB use 99 instead of 100 to avoid flicker at start of fade
this._minOpacity = 0;
this._maxOpacity = 99;
this._opacity = 99;
if (typeof minOpacity != 'undefined') {
if (minOpacity < 0) {
this._minOpacity = 0;
} else if (minOpacity > 99) {
this._minOpacity = 99;
} else {
this._minOpacity = minOpacity;
}
}
if (typeof maxOpacity != 'undefined') {
if (maxOpacity < 0) {
this._maxOpacity = 0;
} else if (maxOpacity > 99) {
this._maxOpacity = 99;
} else {
this._maxOpacity = maxOpacity;
}
if (this._maxOpacity < this._minOpacity) {
this._maxOpacity = this._minOpacity;
}
}
if (typeof initialOpacity != 'undefined') {
if (initialOpacity > this._maxOpacity) {
this._opacity = this._maxOpacity;
} else if (initialOpacity < this._minOpacity) {
this._opacity = this._minOpacity;
} else {
this._opacity = initialOpacity;
}
}
// See if we're using W3C opacity, MSIE filter, or just
// toggling visiblity
if(typeof element.style.opacity != 'undefined') {
this._updateOpacity = this._updateOpacityW3c;
} else if(typeof element.style.filter != 'undefined') {
// If there's not an alpha filter on the element already,
// add one
if (element.style.filter.indexOf("alpha") == -1) {
// Attempt to preserve existing filters
var existingFilters="";
if (element.style.filter) {
existingFilters = element.style.filter+" ";
}
element.style.filter = existingFilters+"alpha(opacity="+this._opacity+")";
}
this._updateOpacity = this._updateOpacityMSIE;
} else {
this._updateOpacity = this._updateVisibility;
}
this._updateOpacity();
}
// Initiates a fade out
Fadomatic.prototype.fadeOut = function () {
this._isFadeOut = true;
this._beginFade();
}
// Initiates a fade in
Fadomatic.prototype.fadeIn = function () {
this._isFadeOut = false;
this._beginFade();
}
// Makes the element completely opaque, stops any fade in progress
Fadomatic.prototype.show = function () {
this.haltFade();
this._opacity = this._maxOpacity;
this._updateOpacity();
}
// Makes the element completely transparent, stops any fade in progress
Fadomatic.prototype.hide = function () {
this.haltFade();
this._opacity = 0;
this._updateOpacity();
}
// Halts any fade in progress
Fadomatic.prototype.haltFade = function () {
clearInterval(this._intervalId);
}
// Resumes a fade where it was halted
Fadomatic.prototype.resumeFade = function () {
this._beginFade();
}
// Pseudo-private members
Fadomatic.prototype._beginFade = function () {
this.haltFade();
var objref = this;
this._intervalId = setInterval(function() { objref._tickFade(); },Fadomatic.INTERVAL_MILLIS);
}
Fadomatic.prototype._tickFade = function () {
if (this._isFadeOut) {
this._opacity -= this._rate;
if (this._opacity < this._minOpacity) {
this._opacity = this._minOpacity;
this.haltFade();
}
} else {
this._opacity += this._rate;
if (this._opacity > this._maxOpacity ) {
this._opacity = this._maxOpacity;
this.haltFade();
}
}
this._updateOpacity();
}
Fadomatic.prototype._updateVisibility = function () {
if (this._opacity > 0) {
this._element.style.visibility = 'visible';
} else {
this._element.style.visibility = 'hidden';
}
}
Fadomatic.prototype._updateOpacityW3c = function () {
this._element.style.opacity = this._opacity/100;
this._updateVisibility();
}
Fadomatic.prototype._updateOpacityMSIE = function () {
this._element.filters.alpha.opacity = this._opacity;
this._updateVisibility();
}
Fadomatic.prototype._updateOpacity = null;
//Do this on load
function initEvents() {
if(document.getElementById("heading") == null){
document.getElementById("bodyNode").style.marginTop = "5px";
}
if(isDebug == false) {
document.getElementById("debug").style.display = "none";
}
alignChat(true);
}
//Debugging function
function trace(msg) {
var node = document.createElement("div");
var debugCon = document.getElementById("debug");
node.innerHTML = msg;
debugCon.appendChild(node);
}
//Appending new content to the message view
function appendMessage(html) {
var shouldScroll = nearBottom();
//Remove any existing insertion point
var insert = document.getElementById("insert");
if(insert) insert.parentNode.removeChild(insert);
//Append the new message to the bottom of our chat block
var chat = document.getElementById("Chat");
var range = document.createRange();
range.selectNode(chat);
var documentFragment = range.createContextualFragment(html);
var myFrag = chat.appendChild(documentFragment);
// Don't do the fadomatic, it's too slow
/*
var frag1 = document.getElementById("insert");
if (frag1) {
var frag= frag1.parentNode.parentNode.parentNode.parentNode.parentNode.parentNode.parentNode.parentNode;
try {
var fader = new Fadomatic(frag, 9, 0, 0, 95);
} catch(e) {
trace(e);
}
fader.fadeIn();
}
*/
alignChat(shouldScroll);
}
function appendNextMessage(html){
var shouldScroll = nearBottom();
//Locate the insertion point
var insert = document.getElementById("insert");
//make new node
range = document.createRange();
range.selectNode(insert.parentNode);
newNode = range.createContextualFragment(html);
//swap
var pointer = insert.parentNode;
insert.parentNode.replaceChild(newNode,insert);
var els = pointer.getElementsByTagName("div");
alignChat(shouldScroll);
}
//Auto-scroll to bottom. Use nearBottom to determine if a scrollToBottom is desired.
function nearBottom() {
return ( document.body.scrollTop >= ( document.body.offsetHeight - ( window.innerHeight * 1.2 ) ) );
}
var intervall_scroll;
function scrollToBottom() {
//document.body.scrollTop = (document.body.scrollHeight-window.innerHeight);
//return;
if( intervall_scroll ) clearInterval( intervall_scroll );
intervall_scroll = setInterval( function() {
var target_scroll = (document.body.scrollHeight-window.innerHeight) - 1;
var scrolldiff = target_scroll - document.body.scrollTop;
if ( document.body.scrollTop != target_scroll ) {
var saved_scroll = document.body.scrollTop;
document.body.scrollTop += scrolldiff / 5 + ( scrolldiff >= 0 ? (scrolldiff != 0 ) : -1 );
} else {
saved_scroll = -1;
clearInterval( intervall_scroll );
}
} , 10 );
return;
}
//Dynamically exchange the active stylesheet
function setStylesheet( id, url ) {
var code = "<style id=\"" + id + "\" type=\"text/css\" media=\"screen,print\">";
if( url.length ) code += "@import url( \"" + url + "\" );";
code += "</style>";
var range = document.createRange();
var head = document.getElementsByTagName( "head" ).item(0);
range.selectNode( head );
documentFragment = range.createContextualFragment( code );
head.removeChild( document.getElementById( id ) );
head.appendChild( documentFragment );
}
//Align our chat to the bottom of the window. If true is passed, view will also be scrolled down
function alignChat(shouldScroll) {
var windowHeight = window.innerHeight;
if(windowHeight > 0) {
var contentElement = document.getElementById('Chat');
var contentHeight = contentElement.offsetHeight;
if (windowHeight - contentHeight > 0) {
contentElement.style.position = 'relative';
contentElement.style.top = '0px';
} else {
contentElement.style.position = 'static';
}
}
if(shouldScroll) scrollToBottom();
}
function windowDidResize() {
alignChat(true/*nearBottom()*/); //nearBottom buggy with inavtive tabs
}
window.onresize = windowDidResize;
//]]>
</script>
<style id="mainStyle" type="text/css" media="screen,print"> @import url( "%@" ); </style>
</head>
<body style="==bodyBackground==" id="bodyNode" onload="initEvents()">
%@
<div id="Chat">
</div>
%@
<div id="debug"></div>
</body>
</html>
|
