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* ExampleBrowser.cs: Do not crash if Source directory is not found.

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This commit is contained in:
the_fiddler 2010-11-24 18:08:20 +00:00
parent efc864de76
commit 9d3ab5c74b
1 changed files with 61 additions and 38 deletions
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99
Source/Examples/ExampleBrowser.cs
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@ -42,10 +42,8 @@ namespace Examples
#region Fields
//PrivateFontCollection font_collection = new PrivateFontCollection();
bool show_warning = true;
static readonly string SourcePath = FindSourcePath();
readonly string SourcePath;
#endregion
@ -53,6 +51,10 @@ namespace Examples
public ExampleBrowser()
{
SourcePath =
FindSourcePath(Directory.GetCurrentDirectory()) ??
FindSourcePath(Assembly.GetExecutingAssembly().Location);
Font = SystemFonts.DialogFont;
InitializeComponent();
@ -121,7 +123,8 @@ namespace Examples
const string no_docs = "Documentation has not been entered.";
const string no_source = "Source code has not been entered.";
if (e.Node.Tag != null && !String.IsNullOrEmpty(((ExampleInfo)e.Node.Tag).Attribute.Documentation))
if (SourcePath != null && e.Node.Tag != null &&
!String.IsNullOrEmpty(((ExampleInfo)e.Node.Tag).Attribute.Documentation))
{
string docs = null;
string source = null;
@ -358,7 +361,10 @@ namespace Examples
MethodInfo main =
e.Example.GetMethod("Main", BindingFlags.Static | BindingFlags.Public | BindingFlags.NonPublic) ??
e.Example.GetMethod("Main", BindingFlags.Static | BindingFlags.Public | BindingFlags.NonPublic, null, new Type[] { typeof(object), typeof(object) }, null);
e.Example.GetMethod("Main", BindingFlags.Static | BindingFlags.Public | BindingFlags.NonPublic, null, new Type[] {
typeof(object),
typeof(object)
}, null);
if (main != null)
{
try
@ -371,31 +377,13 @@ namespace Examples
Trace.WriteLine(String.Format("Launching sample: \"{0}\"", e.Attribute.Title));
Trace.WriteLine(String.Empty);
Thread thread = new Thread((ThreadStart)delegate
{
try
{
main.Invoke(null, null);
}
catch (TargetInvocationException expt)
{
string ex_info;
if (expt.InnerException != null)
ex_info = expt.InnerException.ToString();
else
ex_info = expt.ToString();
MessageBox.Show(ex_info, "An OpenTK example encountered an error.", MessageBoxButtons.OK, MessageBoxIcon.Warning);
AppDomain sandbox = AppDomain.CreateDomain("Sandbox");
sandbox.DomainUnload += HandleSandboxDomainUnload;
Debug.Print(expt.ToString());
}
catch (NullReferenceException expt)
{
MessageBox.Show(expt.ToString(), "The Example launcher failed to load the example.", MessageBoxButtons.OK, MessageBoxIcon.Warning);
}
});
thread.IsBackground = true;
thread.Start();
thread.Join();
SampleRunner runner = new SampleRunner(main);
CrossAppDomainDelegate cross = new CrossAppDomainDelegate(runner.Invoke);
sandbox.DoCallBack(cross);
AppDomain.Unload(sandbox);
}
finally
{
@ -412,31 +400,66 @@ namespace Examples
}
}
// Tries to detect the path that contains the source for the examples.
static string FindSourcePath()
static void HandleSandboxDomainUnload(object sender, EventArgs e)
{
string current_dir = Directory.GetCurrentDirectory();
AppDomain sandbox = (AppDomain)sender;
sandbox.DomainUnload -= HandleSandboxDomainUnload;
}
[Serializable]
class SampleRunner
{
MethodInfo _main;
public SampleRunner(MethodInfo main)
{
_main = main;
}
public void Invoke()
{
try
{
_main.Invoke(null, null);
}
catch (TargetInvocationException expt)
{
string ex_info;
if (expt.InnerException != null)
ex_info = expt.InnerException.ToString();
else
ex_info = expt.ToString();
//MessageBox.Show(ex_info, "An OpenTK example encountered an error.", MessageBoxButtons.OK, MessageBoxIcon.Warning);
Trace.WriteLine(ex_info.ToString());
}
catch (Exception expt)
{
Trace.WriteLine(expt.ToString());
}
}
}
// Tries to detect the path that contains the source for the examples.
static string FindSourcePath(string guess)
{
// Typically, our working directory is either "[opentk]/Binaries/OpenTK/[config]" or "[opentk]".
// The desired source path is "[opentk]/Source/Examples/[ExampleCategory]"
string guess = current_dir;
if (CheckPath(ref guess))
return guess; // We were in [opentk] after all
guess = current_dir;
for (int i = 0; i < 3; i++)
{
DirectoryInfo dir = Directory.GetParent(guess);
if (!dir.Exists)
if (dir == null || !dir.Exists)
break;
guess = dir.FullName;
}
if (CheckPath(ref guess))
return guess; // We were in [opentk]/Binaries/OpenTK/[config] after all
throw new DirectoryNotFoundException();
return null;
}
static bool CheckPath(ref string path)