// Sistr, v0.9
// created by filipe fortes -- http://fortes.com/
// very much inspired by sifr: http://www.mikeindustries.com/sifr 
// still in alpha, use at your own risk
// licensed under an MIT license http://www.opensource.org/licenses/mit-license.php
// if you're interested in contributing, contact me: http://fortes.com/contact

window.onload = function() {
    if (Silverlight.isInstalled("1.0"))
    {
        // For some reason, JavaScript doesn't come with a Trim function ...
        String.prototype.trim = function() { return this.replace(/^\s+|\s+$/g, ''); };
        
        // Add a camelize function too
        String.prototype.camelize = function () { 
            var tokens = this.split('-');
            if (tokens.length == 1) return tokens[0];
            
            var camelizedString = tokens[0];

            for (var i = 1, len = tokens.length; i < len; i++) {
              var s = tokens[i];
              camelizedString += s.charAt(0).toUpperCase() + s.substring(1);
            }

            return camelizedString;
        }
        
        // Add indexOf for those that don't have it already
        if(!Array.prototype.indexOf)
        {
            Array.prototype.indexOf = function(val)
            {
                for (var i=0; i < this.length; i++)
                {
                    if(val == this[i]) return i; 
                }
                return -1;
            }
        }
        
        // A push function that only adds unique values
        Array.prototype.pushunique = function(newVal)
        {
            if ((newVal != null) && (this.indexOf(newVal) == -1))
                this.push(newVal);
        }
        
        // Gets the computed style value (post-cascade, etc)
        // Works for IE & Firefox
        // TODO: Test with Safari mac
        function getStyle(el, propname)
	    {
	        if (el.currentStyle)
	        {
	            return el.currentStyle[propname.camelize()];
	        }
	        else if(document.defaultView)
	        {
	            return document.defaultView.getComputedStyle(el, null).getPropertyValue(propname);
	        }
	    }
    
/*        // Create an empty XAML document within the page, so we can load it when we create Silverlight objects
        var xamlScript = document.createElement("script");
        document.body.appendChild(xamlScript);
        xamlScript.setAttribute("id", "sistr-dummy-xaml");
        xamlScript.setAttribute ("type", "text/xaml");
        var xamlString = '<?xml version="1.0"?><Canvas xmlns="http://schemas.microsoft.com/client/2007" />';
        // InnerHTML doesn't work with IE ... using .text seems to do better
        xamlScript.text = xamlString;

			// Commented out because this currently fails in Firefox when there's a doctype. Using a blank.xaml
			// file for now

  */      
        // First we have to find out what classes we're gonna replace
        // Look for all references to classes that start with "sistr-"
        var targetClasses = [];
        
        for (var i = 0, len = document.styleSheets.length; i < len; i++)
        {
            // W3C standard is .cssRules, but IE uses .rules
            var currentRules = document.styleSheets[i].cssRules ? document.styleSheets[i].cssRules : document.styleSheets[i].rules;
            
            for (var j = 0, ruleCount = currentRules.length; j < ruleCount; j++)
            {
                var selectorText = currentRules[j].selectorText;
                if (selectorText)
                {
                    // Insert only the new classes
                    var matches = selectorText.match(/\.sistr-([\w-])*/g);
                    
                    if ((matches == null) || (matches.length == 0)) continue;
                    
                    for (var k = 0, matchCount = matches.length; k < matchCount; k++)
                    {
                        // Remove the "." at the front, and add if unique
                        targetClasses.pushunique(matches[k].substring(1));
                    }
                }
            }
        }

        var els = [];

        // Find all the elements with at least one of the target class names
        var allElements = document.body.getElementsByTagName("*");
        
        for (var i = 0, len = allElements.length; i < len; i++)
        {
            if (!allElements[i].className) continue;
            for (var j = 0; j < targetClasses.length; j++)
            {
                if (allElements[i].className.indexOf(targetClasses[j]) != -1)
                {
                    els.push(allElements[i]);
                    break;
                }
            }
        }

        function rgbtohex(color)
        {
            var digits = color.toString().match(/(\d{1,3})/g);
                
            color = (parseInt(digits[0]) * 65536 + parseInt(digits[1]) * 256 + parseInt(digits[2])).toString(16);
                
            // Make sure we have leading zeroes
            if (color.length != 6)
            {
                for (var i = 0, len = color.length; i < (6 - len); i++) { color = "0" + color; }
            }
                
            // Add the #
            return "#" + color;
        }

        function fontSizeXaml(node) 
				{
					// Sometimes, sizes are returned in points instead of pixels
					var fontSize = getStyle(node, "font-size");
					
					if ((/pt$/).test(fontSize))
					{
						fontSize = parseFloat(fontSize) * 1.3333;
						fontSize = Math.round(fontSize * 100) / 100;
					}
					// TODO: Support other units (ems, %, etc) returned by IE
					// We can do this by creating a temporary element and measuring it
					// Will make sense once we support resize
					// But for now, it's too much work

					return ' FontSize="' + parseFloat(getStyle(node, "font-size")) + '"'; 

				}
        function fontStyleXaml(node) { return ' FontStyle="' + getStyle(node, "font-style") + '"'; }
        function fontWeightXaml(node) { return ' FontWeight="' + getStyle(node, "font-weight") + '"'; }
        function textDecorationsXaml(node) 
        {
            // SL 1.0 supports "None" and "Underline"
            var textDecoration = getStyle(node, "text-decoration");
            
            if (textDecoration.toLowerCase() != 'underline')
                textDecoration = "None"
            
            return ' TextDecorations="' + textDecoration + '"'; 
        }
        function textWrappingXaml(node) 
        {
            // SL 1.0 supports "NoWrap" and "Wrap"
            // TODO: Support pre through content xaml
            var textWrapping = getStyle(node, "white-space");
            
            if (textWrapping && (textWrapping.toLowerCase() != 'nowrap'))
                textWrapping = "Wrap";
            
            return ' TextWrapping="' + textWrapping + '"'; 
        }
        function fontForegroundXaml(node)
        {
            var foreground = getStyle(node, 'color');
            
            if (!foreground) return '';
            
            // Some browsers return an rgb() value instead of hex, do the conversion here
            if (!(/\#[0-9a-f]{6}/i).test(foreground))
            {
                foreground = rgbtohex(foreground);
            }

            return ' Foreground="' + foreground + '"';
        }
        
        function fontFamilyXaml(node) { return ' FontFamily="Arial"'; }

        function cursorXaml(node)
        { 
            var cursor = getStyle(node, 'cursor');
            
            switch(cursor.toLowerCase())
            {
                // Fixed list of values in SL 1.0
                case 'arrow':
                case 'default':
                case 'eraser':
                case 'hand':
                case 'ibeam':
                case 'none':
                case 'stylus':
                case 'wait':
                
                    break;
                
                case "pointer":
                    cursor = "Hand";
                    break;
                    
                case "text":
                    cursor = "IBeam";
                    break;
                
                // Special case, IE says auto for a hyperlink, want hand instead ...
                case "auto":
                    if ((node.tagName.toLowerCase() == "a") && (node.getAttribute("href")))
                    {
                    
                        cursor = "Hand";
                        break;
                    }
                    
                default:
                    cursor = 'Default';
            }
            
            return ' Cursor="' + cursor + '"'; 
            
        } 

        function contentXaml(node)
        { 
            if (node.nodeType == 1) // Element Node
            {
                if (node.tagName.toLowerCase() == "br") return "<LineBreak />";
                
                var xaml = '';
                
                for (var i = 0, len = node.childNodes.length; i < len; i++)
                {
                    xaml += contentXaml(node.childNodes[i]) + " ";
                }

                return xaml.trim();
            }
            else if (node.nodeType == 3) // Text Node
            {
                var xaml = "<Run ";
                xaml += fontStyleXaml(node.parentNode);
                xaml += fontWeightXaml(node.parentNode);
                xaml += fontForegroundXaml(node.parentNode);
                xaml += textDecorationsXaml(node.parentNode);
                return xaml + ">" + node.data.trim() + "</Run>";
            }
            else
            {
                // Ignore
            }
        }
           
        function createXamlFromHtmlNode(node)
        {
            var xaml = '';
            
            xaml += '<TextBlock ';
            xaml += cursorXaml(node);
            xaml += textWrappingXaml(node);
            xaml += fontSizeXaml(node);
            xaml += ' Name="TB">';
            xaml += contentXaml(node);
            xaml += '</TextBlock>';
            return xaml;
        }
        
        function createPlugin(el, i)
        {
            var oldContent = el.innerHTML;
            var oldClass = el.className;
           
            el.className += " sistr-replaced";
            
            var textBlockXaml = createXamlFromHtmlNode(el);

						var fontUrl = '', fontName = getStyle(el, "font-family").split(',')[0].replace(/\"/g, '');
						if (fontName.indexOf('|') != -1)
						{
							fontUrl = fontName.split('|')[1];
							fontName = fontName.split('|')[0];
						}
						else
						{
							switch(fontName.toLowerCase())
							{
								case "arial":
                case "arial black":
                case "comic sans ms":
                case "courier new":
                case "georgia":
                case "lucida grande":
                case "lucida sans unicode":
                case "times new roman":
                case "trebuchet ms":
                case "verdana":
									break;
								case "monospace":
									fontName = "Courier New";
									break;
								case "serif":
									fontName = "Georgia";
									break;
								case "sans-serif":
								default:
									fontName = "Verdana";
									break;
							}
						}
            
						var replaced = Silverlight.createObjectEx({
                source: 'blank.xaml',
                parentElement: el,
                id: 'sistr-replaced-' + i,
                properties: {
                    width: '100%',
                    height: el.offsetHeight + 'px', 
                    background: 'transparent',
                    isWindowless: 'true',
                    framerate: '24',
                    version: '1.0' },
                events: {
                    onError: function(sender, errorEventArgs) {
                        // Revert back to what was there ... 
                        el.innerHTML = oldContent;
                        el.className = oldClass + " sistr-failed";
                    },
                    onLoad: function(sender, context, source) {
                        // Set up an auto-resizer
                        var rootCanvas = source;
                        var plugin = sender;
                        
                        var textBlock = plugin.content.createFromXaml(textBlockXaml);
                        rootCanvas.children.add(textBlock);

												textBlock.FontFamily = fontName;

												if (fontUrl != '')
												{
													var downloader = plugin.createObject("downloader");
													downloader.addEventListener("Completed", function(sender, args) {
														textBlock.setFontSource(sender);
													});
													downloader.open("GET", fontUrl);
													downloader.send();
												}
                        
                        var onResize = function(sender, eventArgs)
                        {
                        	rootCanvas.width = plugin.content.actualWidth;
                          textBlock.width = plugin.content.actualWidth;
                          rootCanvas.height = textBlock.actualHeight; 
                          plugin.height = textBlock.actualHeight;
                        }
                        
												// Hook up the event handler
                        sender.content.onResize = onResize;

												onResize();
                       
											 	// Manually call onResize after a delay to fix strange sizing bugs
												setTimeout(onResize, 500);
                    }
                },
                initParams: textBlockXaml,
                context: null
            }); 
        }

        
        for (var i = 0, len = els.length; i < len; i++)
        {
            createPlugin(els[i], i);
        }
			}
}



///////////////////////////////////////////////////////////////////////////////
//
//  Silverlight.js   			version 1.0
//
//  This file is provided by Microsoft as a helper file for websites that
//  incorporate Silverlight Objects. This file is provided under the Silverlight 
//  SDK 1.0 license available at http://go.microsoft.com/fwlink/?linkid=94240.  
//  You may not use or distribute this file or the code in this file except as 
//  expressly permitted under that license.
// 
//  Copyright (c) 2007 Microsoft Corporation. All rights reserved.
//
///////////////////////////////////////////////////////////////////////////////

if(!window.Silverlight)window.Silverlight={};Silverlight._silverlightCount=0;Silverlight.ua=null;Silverlight.available=false;Silverlight.fwlinkRoot="http://go.microsoft.com/fwlink/?LinkID=";Silverlight.StatusText="Get Microsoft Silverlight";Silverlight.EmptyText="";Silverlight.detectUserAgent=function(){var a=window.navigator.userAgent;Silverlight.ua={OS:"Unsupported",Browser:"Unsupported"};if(a.indexOf("Windows NT")>=0)Silverlight.ua.OS="Windows";else if(a.indexOf("PPC Mac OS X")>=0)Silverlight.ua.OS="MacPPC";else if(a.indexOf("Intel Mac OS X")>=0)Silverlight.ua.OS="MacIntel";if(Silverlight.ua.OS!="Unsupported")if(a.indexOf("MSIE")>=0){if(navigator.userAgent.indexOf("Win64")==-1)if(parseInt(a.split("MSIE")[1])>=6)Silverlight.ua.Browser="MSIE"}else if(a.indexOf("Firefox")>=0){var b=a.split("Firefox/")[1].split("."),c=parseInt(b[0]);if(c>=2)Silverlight.ua.Browser="Firefox";else{var d=parseInt(b[1]);if(c==1&&d>=5)Silverlight.ua.Browser="Firefox"}}else if(a.indexOf("Safari")>=0)Silverlight.ua.Browser="Safari"};Silverlight.detectUserAgent();Silverlight.isInstalled=function(d){var c=false,a=null;try{var b=null;if(Silverlight.ua.Browser=="MSIE")b=new ActiveXObject("AgControl.AgControl");else if(navigator.plugins["Silverlight Plug-In"]){a=document.createElement("div");document.body.appendChild(a);a.innerHTML='<embed type="application/x-silverlight" />';b=a.childNodes[0]}if(b.IsVersionSupported(d))c=true;b=null;Silverlight.available=true}catch(e){c=false}if(a)document.body.removeChild(a);return c};Silverlight.createObject=function(l,g,m,j,k,i,h){var b={},a=j,c=k;a.source=l;b.parentElement=g;b.id=Silverlight.HtmlAttributeEncode(m);b.width=Silverlight.HtmlAttributeEncode(a.width);b.height=Silverlight.HtmlAttributeEncode(a.height);b.ignoreBrowserVer=Boolean(a.ignoreBrowserVer);b.inplaceInstallPrompt=Boolean(a.inplaceInstallPrompt);var e=a.version.split(".");b.shortVer=e[0]+"."+e[1];b.version=a.version;a.initParams=i;a.windowless=a.isWindowless;a.maxFramerate=a.framerate;for(var d in c)if(c[d]&&d!="onLoad"&&d!="onError"){a[d]=c[d];c[d]=null}delete a.width;delete a.height;delete a.id;delete a.onLoad;delete a.onError;delete a.ignoreBrowserVer;delete a.inplaceInstallPrompt;delete a.version;delete a.isWindowless;delete a.framerate;if(Silverlight.isInstalled(b.version)){if(Silverlight._silverlightCount==0)if(window.addEventListener)window.addEventListener("onunload",Silverlight.__cleanup,false);else window.attachEvent("onunload",Silverlight.__cleanup);var f=Silverlight._silverlightCount++;a.onLoad="__slLoad"+f;a.onError="__slError"+f;window[a.onLoad]=function(a){if(c.onLoad)c.onLoad(document.getElementById(b.id),h,a)};window[a.onError]=function(a,b){if(c.onError)c.onError(a,b);else Silverlight.default_error_handler(a,b)};slPluginHTML=Silverlight.buildHTML(b,a)}else slPluginHTML=Silverlight.buildPromptHTML(b);if(b.parentElement)b.parentElement.innerHTML=slPluginHTML;else return slPluginHTML};Silverlight.supportedUserAgent=function(){var a=Silverlight.ua,b=a.OS=="Unsupported"||a.Browser=="Unsupported"||a.OS=="Windows"&&a.Browser=="Safari"||a.OS.indexOf("Mac")>=0&&a.Browser=="IE";return !b};Silverlight.buildHTML=function(c,d){var a=[],e,i,g,f,h;if(Silverlight.ua.Browser=="Safari"){a.push("<embed ");e="";i=" ";g='="';f='"';h=' type="application/x-silverlight"/>'+"<iframe style='visibility:hidden;height:0;width:0'/>"}else{a.push('<object type="application/x-silverlight"');e=">";i=' <param name="';g='" value="';f='" />';h="</object>"}a.push(' id="'+c.id+'" width="'+c.width+'" height="'+c.height+'" '+e);for(var b in d)if(d[b])a.push(i+Silverlight.HtmlAttributeEncode(b)+g+Silverlight.HtmlAttributeEncode(d[b])+f);a.push(h);return a.join("")};Silverlight.default_error_handler=function(e,b){var d,c=b.ErrorType;d=b.ErrorCode;var a="\nSilverlight error message     \n";a+="ErrorCode: "+d+"\n";a+="ErrorType: "+c+"       \n";a+="Message: "+b.ErrorMessage+"     \n";if(c=="ParserError"){a+="XamlFile: "+b.xamlFile+"     \n";a+="Line: "+b.lineNumber+"     \n";a+="Position: "+b.charPosition+"     \n"}else if(c=="RuntimeError"){if(b.lineNumber!=0){a+="Line: "+b.lineNumber+"     \n";a+="Position: "+b.charPosition+"     \n"}a+="MethodName: "+b.methodName+"     \n"}alert(a)};Silverlight.createObjectEx=function(b){var a=b,c=Silverlight.createObject(a.source,a.parentElement,a.id,a.properties,a.events,a.initParams,a.context);if(a.parentElement==null)return c};Silverlight.buildPromptHTML=function(i){var a=null,f=Silverlight.fwlinkRoot,c=Silverlight.ua.OS,b="92822",d;if(i.inplaceInstallPrompt){var h;if(Silverlight.available){d="94376";h="94382"}else{d="92802";h="94381"}var g="93481",e="93483";if(c=="Windows"){b="92799";g="92803";e="92805"}else if(c=="MacIntel"){b="92808";g="92804";e="92806"}else if(c=="MacPPC"){b="92807";g="92815";e="92816"}a='<table border="0" cellpadding="0" cellspacing="0" width="205px"><tr><td><img title="Get Microsoft Silverlight" onclick="javascript:Silverlight.followFWLink({0});" style="border:0; 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height: 67px; background-color: #FFFFFF"><img onclick="javascript:Silverlight.followFWLink({0});" style="border:0; cursor:pointer" src="{1}" alt="Get Microsoft Silverlight"/></div>'}a=a.replace("{0}",b);a=a.replace("{1}",f+d);return a};Silverlight.__cleanup=function(){for(var a=Silverlight._silverlightCount-1;a>=0;a--){window["__slLoad"+a]=null;window["__slError"+a]=null}if(window.removeEventListener)window.removeEventListener("unload",Silverlight.__cleanup,false);else window.detachEvent("onunload",Silverlight.__cleanup)};Silverlight.followFWLink=function(a){top.location=Silverlight.fwlinkRoot+String(a)};Silverlight.HtmlAttributeEncode=function(c){var a,b="";if(c==null)return null;for(var d=0;d<c.length;d++){a=c.charCodeAt(d);if(a>96&&a<123||a>64&&a<91||a>43&&a<58&&a!=47||a==95)b=b+String.fromCharCode(a);else b=b+"&#"+a+";"}return b}