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Proper cancel logic in installer

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This commit is contained in:
Eric Reed 2013-02-27 18:40:00 -05:00
parent 0cd583c300
commit 06995c4a36
1 changed files with 46 additions and 27 deletions
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37
MediaBrowser.Installer/MainWindow.xaml.cs
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@ -30,6 +30,8 @@ namespace MediaBrowser.Installer
protected string TempLocation = Path.Combine(Path.GetTempPath(), "MediaBrowser");
protected WebClient MainClient = new WebClient();
public MainWindow()
{
GetArgs();
@ -48,6 +50,15 @@ namespace MediaBrowser.Installer
{
e.Cancel = true;
}
if (MainClient.IsBusy)
{
MainClient.CancelAsync();
while (MainClient.IsBusy)
{
// wait to finish
}
}
MainClient.Dispose();
ClearTempLocation(TempLocation);
base.OnClosing(e);
}
@ -129,6 +140,8 @@ namespace MediaBrowser.Installer
dlAnimation.StopAnimation();
prgProgress.Visibility = btnCancel.Visibility = Visibility.Hidden;
if (archive == null) return; //we canceled or had an error that was already reported
// Extract
lblStatus.Content = "Extracting Package...";
try
@ -166,13 +179,11 @@ namespace MediaBrowser.Installer
}
protected async Task<PackageVersionInfo> GetPackageVersion()
{
using (var client = new WebClient())
{
try
{
// get the package information for the server
var json = await client.DownloadStringTaskAsync("http://www.mb3admin.com/admin/service/package/retrieveAll?name=" + PackageName);
var json = await MainClient.DownloadStringTaskAsync("http://www.mb3admin.com/admin/service/package/retrieveAll?name=" + PackageName);
var packages = JsonSerializer.DeserializeFromString<List<PackageInfo>>(json);
var version = packages[0].versions.Where(v => v.classification <= PackageClass).OrderByDescending(v => v.version).FirstOrDefault(v => v.version <= PackageVersion);
@ -188,7 +199,6 @@ namespace MediaBrowser.Installer
SystemClose(e.GetType().FullName + "\n\n" + e.Message);
}
}
return null;
}
@ -197,23 +207,32 @@ namespace MediaBrowser.Installer
/// </summary>
/// <returns>The fully qualified name of the downloaded package</returns>
protected async Task<string> DownloadPackage(PackageVersionInfo version)
{
using (var client = new WebClient())
{
try
{
var archiveFile = Path.Combine(PrepareTempLocation(), version.targetFilename);
// setup download progress and download the package
client.DownloadProgressChanged += DownloadProgressChanged;
await client.DownloadFileTaskAsync(version.sourceUrl, archiveFile);
MainClient.DownloadProgressChanged += DownloadProgressChanged;
try
{
await MainClient.DownloadFileTaskAsync(version.sourceUrl, archiveFile);
}
catch (WebException e)
{
if (e.Status == WebExceptionStatus.RequestCanceled)
{
return null;
}
throw;
}
return archiveFile;
}
catch (Exception e)
{
SystemClose(e.GetType().FullName + "\n\n" + e.Message);
}
}
return "";
}