Click here to Skip to main content
15,884,099 members
Articles / MEF

Migrate from Basic to MVVM and MEF Composable Patterns for a Silverlight Application - Part 1

Rate me:
Please Sign up or sign in to vote.
4.67/5 (3 votes)
3 May 2012CPOL9 min read 24.6K   611   15  
The article series shows how to upgrade a Silverlight application having basic patterns to the MVVM and MEF composable patterns with easy approaches and detailed coding explanations.
//v2.0.30511.0
if(!window.Silverlight)window.Silverlight={};Silverlight._silverlightCount=0;Silverlight.__onSilverlightInstalledCalled=false;Silverlight.fwlinkRoot="http://go2.microsoft.com/fwlink/?LinkID=";Silverlight.__installationEventFired=false;Silverlight.onGetSilverlight=null;Silverlight.onSilverlightInstalled=function(){window.location.reload(false)};Silverlight.isInstalled=function(b){if(b==undefined)b=null;var a=false,m=null;try{var i=null,j=false;if(window.ActiveXObject)try{i=new ActiveXObject("AgControl.AgControl");if(b===null)a=true;else if(i.IsVersionSupported(b))a=true;i=null}catch(l){j=true}else j=true;if(j){var k=navigator.plugins["Silverlight Plug-In"];if(k)if(b===null)a=true;else{var h=k.description;if(h==="1.0.30226.2")h="2.0.30226.2";var c=h.split(".");while(c.length>3)c.pop();while(c.length<4)c.push(0);var e=b.split(".");while(e.length>4)e.pop();var d,g,f=0;do{d=parseInt(e[f]);g=parseInt(c[f]);f++}while(f<e.length&&d===g);if(d<=g&&!isNaN(d))a=true}}}catch(l){a=false}return a};Silverlight.WaitForInstallCompletion=function(){if(!Silverlight.isBrowserRestartRequired&&Silverlight.onSilverlightInstalled){try{navigator.plugins.refresh()}catch(a){}if(Silverlight.isInstalled(null)&&!Silverlight.__onSilverlightInstalledCalled){Silverlight.onSilverlightInstalled();Silverlight.__onSilverlightInstalledCalled=true}else setTimeout(Silverlight.WaitForInstallCompletion,3e3)}};Silverlight.__startup=function(){navigator.plugins.refresh();Silverlight.isBrowserRestartRequired=Silverlight.isInstalled(null);if(!Silverlight.isBrowserRestartRequired){Silverlight.WaitForInstallCompletion();if(!Silverlight.__installationEventFired){Silverlight.onInstallRequired();Silverlight.__installationEventFired=true}}else if(window.navigator.mimeTypes){var b=navigator.mimeTypes["application/x-silverlight-2"],c=navigator.mimeTypes["application/x-silverlight-2-b2"],d=navigator.mimeTypes["application/x-silverlight-2-b1"],a=d;if(c)a=c;if(!b&&(d||c)){if(!Silverlight.__installationEventFired){Silverlight.onUpgradeRequired();Silverlight.__installationEventFired=true}}else if(b&&a)if(b.enabledPlugin&&a.enabledPlugin)if(b.enabledPlugin.description!=a.enabledPlugin.description)if(!Silverlight.__installationEventFired){Silverlight.onRestartRequired();Silverlight.__installationEventFired=true}}if(!Silverlight.disableAutoStartup)if(window.removeEventListener)window.removeEventListener("load",Silverlight.__startup,false);else window.detachEvent("onload",Silverlight.__startup)};if(!Silverlight.disableAutoStartup)if(window.addEventListener)window.addEventListener("load",Silverlight.__startup,false);else window.attachEvent("onload",Silverlight.__startup);Silverlight.createObject=function(m,f,e,k,l,h,j){var d={},a=k,c=l;d.version=a.version;a.source=m;d.alt=a.alt;if(h)a.initParams=h;if(a.isWindowless&&!a.windowless)a.windowless=a.isWindowless;if(a.framerate&&!a.maxFramerate)a.maxFramerate=a.framerate;if(e&&!a.id)a.id=e;delete a.ignoreBrowserVer;delete a.inplaceInstallPrompt;delete a.version;delete a.isWindowless;delete a.framerate;delete a.data;delete a.src;delete a.alt;if(Silverlight.isInstalled(d.version)){for(var b in c)if(c[b]){if(b=="onLoad"&&typeof c[b]=="function"&&c[b].length!=1){var i=c[b];c[b]=function(a){return i(document.getElementById(e),j,a)}}var g=Silverlight.__getHandlerName(c[b]);if(g!=null){a[b]=g;c[b]=null}else throw"typeof events."+b+" must be 'function' or 'string'";}slPluginHTML=Silverlight.buildHTML(a)}else slPluginHTML=Silverlight.buildPromptHTML(d);if(f)f.innerHTML=slPluginHTML;else return slPluginHTML};Silverlight.buildHTML=function(a){var b=[];b.push('<object type="application/x-silverlight" data="data:application/x-silverlight,"');if(a.id!=null)b.push(' id="'+Silverlight.HtmlAttributeEncode(a.id)+'"');if(a.width!=null)b.push(' width="'+a.width+'"');if(a.height!=null)b.push(' height="'+a.height+'"');b.push(" >");delete a.id;delete a.width;delete a.height;for(var c in a)if(a[c])b.push('<param name="'+Silverlight.HtmlAttributeEncode(c)+'" value="'+Silverlight.HtmlAttributeEncode(a[c])+'" />');b.push("</object>");return b.join("")};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(b){var a="",d=Silverlight.fwlinkRoot,c=b.version;if(b.alt)a=b.alt;else{if(!c)c="";a="<a href='javascript:Silverlight.getSilverlight(\"{1}\");' style='text-decoration: none;'><img src='{2}' alt='Get Microsoft Silverlight' style='border-style: none'/></a>";a=a.replace("{1}",c);a=a.replace("{2}",d+"108181")}return a};Silverlight.getSilverlight=function(e){if(Silverlight.onGetSilverlight)Silverlight.onGetSilverlight();var b="",a=String(e).split(".");if(a.length>1){var c=parseInt(a[0]);if(isNaN(c)||c<2)b="1.0";else b=a[0]+"."+a[1]}var d="";if(b.match(/^\d+\056\d+$/))d="&v="+b;Silverlight.followFWLink("149156"+d)};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};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.__cleanup=function(){for(var a=Silverlight._silverlightCount-1;a>=0;a--)window["__slEvent"+a]=null;Silverlight._silverlightCount=0;if(window.removeEventListener)window.removeEventListener("unload",Silverlight.__cleanup,false);else window.detachEvent("onunload",Silverlight.__cleanup)};Silverlight.__getHandlerName=function(b){var a="";if(typeof b=="string")a=b;else if(typeof b=="function"){if(Silverlight._silverlightCount==0)if(window.addEventListener)window.addEventListener("onunload",Silverlight.__cleanup,false);else window.attachEvent("onunload",Silverlight.__cleanup);var c=Silverlight._silverlightCount++;a="__slEvent"+c;window[a]=b}else a=null;return a};Silverlight.onRequiredVersionAvailable=function(){};Silverlight.onRestartRequired=function(){};Silverlight.onUpgradeRequired=function(){};Silverlight.onInstallRequired=function(){};Silverlight.IsVersionAvailableOnError=function(d,a){var b=false;try{if(a.ErrorCode==8001&&!Silverlight.__installationEventFired){Silverlight.onUpgradeRequired();Silverlight.__installationEventFired=true}else if(a.ErrorCode==8002&&!Silverlight.__installationEventFired){Silverlight.onRestartRequired();Silverlight.__installationEventFired=true}else if(a.ErrorCode==5014||a.ErrorCode==2106){if(Silverlight.__verifySilverlight2UpgradeSuccess(a.getHost()))b=true}else b=true}catch(c){}return b};Silverlight.IsVersionAvailableOnLoad=function(b){var a=false;try{if(Silverlight.__verifySilverlight2UpgradeSuccess(b.getHost()))a=true}catch(c){}return a};Silverlight.__verifySilverlight2UpgradeSuccess=function(d){var c=false,b="2.0.31005",a=null;try{if(d.IsVersionSupported(b+".99")){a=Silverlight.onRequiredVersionAvailable;c=true}else if(d.IsVersionSupported(b+".0"))a=Silverlight.onRestartRequired;else a=Silverlight.onUpgradeRequired;if(a&&!Silverlight.__installationEventFired){a();Silverlight.__installationEventFired=true}}catch(e){}return c}

By viewing downloads associated with this article you agree to the Terms of Service and the article's licence.

If a file you wish to view isn't highlighted, and is a text file (not binary), please let us know and we'll add colourisation support for it.

License

This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)


Written By
United States United States
Shenwei is a software developer and architect, and has been working on business applications using Microsoft and Oracle technologies since 1996. He obtained Microsoft Certified Systems Engineer (MCSE) in 1998 and Microsoft Certified Solution Developer (MCSD) in 1999. He has experience in ASP.NET, C#, Visual Basic, Windows and Web Services, Silverlight, WPF, JavaScript/AJAX, HTML, SQL Server, and Oracle.

Comments and Discussions