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/usr/share/kde4/apps/ktelepathy/template.html is in kde-telepathy-text-ui 0.3.1-0ubuntu1.

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The actual contents of the file can be viewed below.

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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>
	<meta http-equiv="content-type" content="text/html; charset=utf-8" />
	<base href="%@">
	<script type="text/javascript" defer="defer">
		// NOTE:
		// Any percent signs in this file must be escaped!
		// Use two escape signs (%%) to display it, this is passed through a format call!
		
		function appendHTML(html) {
			var node = document.getElementById("Chat");
			var range = document.createRange();
			range.selectNode(node);
			var documentFragment = range.createContextualFragment(html);
			node.appendChild(documentFragment);
		}
		
		// a coalesced HTML object buffers and outputs DOM objects en masse.
		// saves A LOT of CSS recalculation time when loading many messages.
		// (ex. a long twitter timeline)
		function CoalescedHTML() {
			var self = this;
			this.fragment = document.createDocumentFragment();
			this.timeoutID = 0;
			this.coalesceRounds = 0;
			this.isCoalescing = false;
			this.isConsecutive = undefined;
			this.shouldScroll = undefined;
			
			var appendElement = function (elem) {
				document.getElementById("Chat").appendChild(elem);
			};
			
			function outputHTML() {
				var insert = document.getElementById("insert");
				if(!!insert && self.isConsecutive) {
					insert.parentNode.replaceChild(self.fragment, insert);
				} else {
					if(insert)
						insert.parentNode.removeChild(insert);
					// insert the documentFragment into the live DOM
					appendElement(self.fragment);
				}
				alignChat(self.shouldScroll);
				
				// reset state to empty/non-coalescing
				self.shouldScroll = undefined;
				self.isConsecutive = undefined;
				self.isCoalescing = false;
				self.coalesceRounds = 0;
			}
			
			// creates and returns a new documentFragment, containing all content nodes
			// which can be inserted as a single node.
			function createHTMLNode(html) {
				var range = document.createRange();
				range.selectNode(document.getElementById("Chat"));
				return range.createContextualFragment(html);
			}
			
			// removes first insert node from the internal fragment.
			function rmInsertNode() {
				var insert = self.fragment.querySelector("#insert");
				if(insert)
					insert.parentNode.removeChild(insert);
			}
			
			function setShouldScroll(flag) {
				if(flag && undefined === self.shouldScroll)
					self.shouldScroll = flag;
			}
			
			// hook in a custom method to append new data
			// to the chat.
			this.setAppendElementMethod = function (func) {
				if(typeof func === 'function')
					appendElement = func;
			}
						
			// (re)start the coalescing timer.
			//   we wait 25ms for a new message to come in.
			//   If we get one, restart the timer and wait another 10ms.
			//   If not, run outputHTML()
			//  We do this a maximum of 400 times, for 10s max that can be spent
			//  coalescing input, since this will block display.
			this.coalesce = function() {
				window.clearTimeout(self.timeoutID);
				self.timeoutID = window.setTimeout(outputHTML, 25);
				self.isCoalescing = true;
				self.coalesceRounds += 1;
				if(400 < self.coalesceRounds)
					self.cancel();
			}
			
			// if we need to append content into an insertion div,
			// we need to clear the buffer and cancel the timeout.
			this.cancel = function() {
				if(self.isCoalescing) {
					window.clearTimeout(self.timeoutID);
					outputHTML();
				}
			}
			
			
			// coalased analogs to the global functions
			
			this.append = function(html, shouldScroll) {
				// if we started this fragment with a consecuative message,
				// cancel and output before we continue
				if(self.isConsecutive) {
					self.cancel();
				}
				self.isConsecutive = false;
				rmInsertNode();
				var node = createHTMLNode(html);
				self.fragment.appendChild(node);
				
				node = null;

				setShouldScroll(shouldScroll);
				self.coalesce();
			}
			
			this.appendNext = function(html, shouldScroll) {
				if(undefined === self.isConsecutive)
					self.isConsecutive = true;
				var node = createHTMLNode(html);
				var insert = self.fragment.querySelector("#insert");
				if(insert) {
					insert.parentNode.replaceChild(node, insert);
				} else {
					self.fragment.appendChild(node);
				}
				node = null;
				setShouldScroll(shouldScroll);
				self.coalesce();
			}
			
			this.replaceLast = function (html, shouldScroll) {
				rmInsertNode();
				var node = createHTMLNode(html);
				var lastMessage = self.fragment.lastChild;
				lastMessage.parentNode.replaceChild(node, lastMessage);
				node = null;
				setShouldScroll(shouldScroll);
			}
		}
		var coalescedHTML;

		//Appending new content to the message view
		function appendMessage(html) {
			var shouldScroll;
			
			// Only call nearBottom() if should scroll is undefined.
			if(undefined === coalescedHTML.shouldScroll) {
				shouldScroll = nearBottom();
			} else {
				shouldScroll = coalescedHTML.shouldScroll;
			}
			appendMessageNoScroll(html, shouldScroll);
		}
		
		function appendMessageNoScroll(html, shouldScroll) {			
			shouldScroll = shouldScroll || false;
			// always try to coalesce new, non-griuped, messages
			coalescedHTML.append(html, shouldScroll)
		}
		
		function appendNextMessage(html){
			var shouldScroll;
			if(undefined === coalescedHTML.shouldScroll) {
				shouldScroll = nearBottom();
			} else {
				shouldScroll = coalescedHTML.shouldScroll;
			}
			appendNextMessageNoScroll(html, shouldScroll);
		}
		
		function appendNextMessageNoScroll(html, shouldScroll){
			shouldScroll = shouldScroll || false;
			// only group next messages if we're already coalescing input
			coalescedHTML.appendNext(html, shouldScroll);
		}

		function replaceLastMessage(html){
			var shouldScroll;
			// only replace messages if we're already coalescing
			if(coalescedHTML.isCoalescing){
				if(undefined === coalescedHTML.shouldScroll) {
					shouldScroll = nearBottom();
				} else {
					shouldScroll = coalescedHTML.shouldScroll;
				}
				coalescedHTML.replaceLast(html, shouldScroll);
			} else {
				shouldScroll = nearBottom();
				//Retrieve the current insertion point, then remove it
				//This requires that there have been an insertion point... is there a better way to retrieve the last element? -evands
				var insert = document.getElementById("insert");
				if(insert){
					var parentNode = insert.parentNode;
					parentNode.removeChild(insert);
					var lastMessage = document.getElementById("Chat").lastChild;
					document.getElementById("Chat").removeChild(lastMessage);
				}

				//Now append the message itself
				appendHTML(html);

				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 ) ) );
		}
		function scrollToBottom() {
			document.body.scrollTop = document.body.offsetHeight;
		}

		//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 );
			var documentFragment = range.createContextualFragment( code );
			head.removeChild( document.getElementById( id ) );
			head.appendChild( documentFragment );
		}

		/* Converts emoticon images to textual emoticons; all emoticons in message if alt is held */
		document.onclick = function imageCheck() {
			var node = event.target;
			if (node.tagName.toLowerCase() != 'img')
				return;
				
			imageSwap(node, false);
		}
		
		/* Converts textual emoticons to images if textToImagesFlag is true, otherwise vice versa */
		function imageSwap(node, textToImagesFlag) {
			var shouldScroll = nearBottom();
			
			var images = [node];
			if (event.altKey) {
				while (node.id != "Chat" && node.parentNode.id != "Chat")
					node = node.parentNode;
				images = node.querySelectorAll(textToImagesFlag ? "a" : "img");
			}
			
			for (var i = 0; i < images.length; i++) {
				textToImagesFlag ? textToImage(images[i]) : imageToText(images[i]);
			}
			
			alignChat(shouldScroll);
		}

		function textToImage(node) {
			if (!node.getAttribute("isEmoticon"))
				return;
			//Swap the image/text
			var img = document.createElement('img');
			img.setAttribute('src', node.getAttribute('src'));
			img.setAttribute('alt', node.firstChild.nodeValue);
			img.className = node.className;
			node.parentNode.replaceChild(img, node);
		}
		
		function imageToText(node)
		{
			if (client.zoomImage(node) || !node.alt)
				return;
			var a = document.createElement('a');
			a.setAttribute('onclick', 'imageSwap(this, true)');
			a.setAttribute('src', node.getAttribute('src'));
			a.setAttribute('isEmoticon', true);
			a.className = node.className;
			var text = document.createTextNode(node.alt);
			a.appendChild(text);
			node.parentNode.replaceChild(a, node);
		}
		
		//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 = (windowHeight - contentHeight) + 'px';
				} else {
					contentElement.style.position = 'static';
				}
			}

			if (shouldScroll) scrollToBottom();
		}

		window.onresize = function windowDidResize(){
			alignChat(true/*nearBottom()*/); //nearBottom buggy with inactive tabs
		}
		
		function initStyle() {
			alignChat(true);
			if(!coalescedHTML)
				coalescedHTML = new CoalescedHTML();
		}
	</script>

	<style type="text/css">
		.actionMessageUserName { display:none; }
		.actionMessageBody:before { content:"*"; }
		.actionMessageBody:after { content:"*"; }
		* { word-wrap:break-word; text-rendering: optimizelegibility; }
		img.scaledToFitImage { height: auto; max-width: 100%%; }
	</style>

	<!-- This style is shared by all variants. !-->
	<style id="baseStyle" type="text/css" media="screen,print">
		%@
	</style>

	<!-- Although we call this mainStyle for legacy reasons, it's actually the variant style !-->
	<style id="mainStyle" type="text/css" media="screen,print">
		@import url( "%@" );
	</style>

</head>
<body onload="initStyle();" style="==bodyBackground==">
%@
<div id="Chat">
</div>
%@
</body>
</html>