/// <summary>
/// Called by Silverlight host when it instantiates our application
/// </summary>
public DynamicApplication()
{
if (_Current != null) {
throw new Exception("Only one instance of DynamicApplication can be created");
}
_Current = this;
_UIThreadId = Thread.CurrentThread.ManagedThreadId;
_HtmlPageUri = HtmlPageUri;
Settings.ReportUnhandledErrors = true;
AppManifest = new DynamicAppManifest();
LanguagesConfig = DynamicLanguageConfig.Create(AppManifest.Assemblies);
Startup += new StartupEventHandler(DynamicApplication_Startup);
}
/// <summary>
/// Called by Silverlight host when it instantiates our application
/// </summary>
public DynamicApplication()
{
if (_Current != null)
{
throw new Exception("Only one instance of DynamicApplication can be created");
}
_Current = this;
_UIThreadId = Thread.CurrentThread.ManagedThreadId;
_HtmlPageUri = HtmlPageUri;
Settings.ReportUnhandledErrors = true;
AppManifest = new DynamicAppManifest();
LanguagesConfig = DynamicLanguageConfig.Create(AppManifest.Assemblies);
Startup += new StartupEventHandler(DynamicApplication_Startup);
}
/// <summary>
/// Downloads languages. If there is a missing language assembly in the
/// XAP, then download the language's external package and load the
/// package's assemblies, updating the AppManifest.Assemblies list.
/// Calls the provided delegate when the downloadQueue is empty or if
/// the language assemblies are all in the XAP.
/// </summary>
public void DownloadLanguages(DynamicAppManifest appManifest, Action onComplete)
{
var downloadQueue = new List <DynamicLanguageInfo>();
foreach (var used in LanguagesUsed)
{
var lang = GetLanguageByName(used.Key);
if (used.Value && lang != null && lang.External != null)
{
downloadQueue.Add(lang);
}
}
if (downloadQueue.Count == 0)
{
onComplete.Invoke();
return;
}
foreach (var lang in downloadQueue)
{
var xapvfs = (XapVirtualFilesystem)XapPAL.PAL.VirtualFilesystem;
bool inXAP = true;
foreach (var assembly in lang.Assemblies)
{
if (xapvfs.GetFile(assembly) != null)
{
BrowserPAL.PAL.LoadAssemblyFromPath(assembly);
}
else
{
inXAP = false;
break;
}
}
if (inXAP)
{
onComplete.Invoke();
}
else
{
WebClient wc = new WebClient();
var uri = new Uri(lang.External, UriKind.RelativeOrAbsolute);
wc.OpenReadCompleted += (sender, e) => {
// Make sure two handlers never step on eachother (could this even happen?)
lock (_lock) {
var sri = new StreamResourceInfo(e.Result, null);
var alang = ((DynamicLanguageInfo)e.UserState);
bool first = true;
foreach (var assembly in alang.Assemblies)
{
if (xapvfs.GetFile(sri, assembly) != null)
{
xapvfs.UsingStorageUnit(sri, () => {
var asm = BrowserPAL.PAL.LoadAssemblyFromPath(assembly);
if (first)
{
GetLanguageByName(alang.Names[0].ToLower()).LanguageContext =
alang.LanguageContext.Split(',')[0] + ", " + asm.FullName;
first = false;
}
appManifest.Assemblies.Add(asm);
});
}
}
downloadQueue.Remove(alang);
if (downloadQueue.Count == 0)
{
onComplete.Invoke();
}
}
};
wc.OpenReadAsync(uri, lang);
}
}
}
/// <summary>
/// Downloads languages. If there is a missing language assembly in the
/// XAP, then download the language's external package and load the
/// package's assemblies, updating the AppManifest.Assemblies list.
/// Calls the provided delegate when the downloadQueue is empty or if
/// the language assemblies are all in the XAP.
/// </summary>
public void DownloadLanguages(DynamicAppManifest appManifest, Action onComplete)
{
var downloadQueue = new List<DynamicLanguageInfo>();
foreach(var used in LanguagesUsed) {
var lang = GetLanguageByName(used.Key);
if (used.Value && lang != null && lang.External != null) {
downloadQueue.Add(lang);
}
}
if (downloadQueue.Count == 0) {
onComplete.Invoke();
return;
}
foreach (var lang in downloadQueue) {
var xapvfs = (XapVirtualFilesystem)XapPAL.PAL.VirtualFilesystem;
bool inXAP = true;
foreach(var assembly in lang.Assemblies) {
if(xapvfs.GetFile(assembly) != null) {
BrowserPAL.PAL.LoadAssemblyFromPath(assembly);
} else {
inXAP = false;
break;
}
}
if(inXAP) {
onComplete.Invoke();
} else {
WebClient wc = new WebClient();
var uri = new Uri(lang.External, UriKind.RelativeOrAbsolute);
wc.OpenReadCompleted += (sender, e) => {
// Make sure two handlers never step on eachother (could this even happen?)
lock (_lock) {
var sri = new StreamResourceInfo(e.Result, null);
var alang = ((DynamicLanguageInfo) e.UserState);
bool first = true;
foreach (var assembly in alang.Assemblies) {
if (xapvfs.GetFile(sri, assembly) != null) {
xapvfs.UsingStorageUnit(sri, () => {
var asm = BrowserPAL.PAL.LoadAssemblyFromPath(assembly);
if (first) {
GetLanguageByName(alang.Names[0].ToLower()).LanguageContext =
alang.LanguageContext.Split(',')[0] + ", " + asm.FullName;
first = false;
}
appManifest.Assemblies.Add(asm);
});
}
}
downloadQueue.Remove(alang);
if (downloadQueue.Count == 0) {
onComplete.Invoke();
}
}
};
wc.OpenReadAsync(uri, lang);
}
}
}
void DynamicApplication_Startup(object sender, StartupEventArgs e) {
Settings.Parse(InitParams = NormalizeInitParams(e.InitParams));
Engine = new DynamicEngine();
AppManifest = new DynamicAppManifest();
AppManifest.LoadAssemblies(() => Engine.Start());
}
