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using System;
using System.IO;
using System.Linq;
using System.Reflection;
namespace GuiUnit
{
public class XwtMainLoopIntegration : IMainLoopIntegration
{
// List of Xwt backends we will try to use in order of priority
Tuple<string,string>[] backends = new[] {
Tuple.Create ("Xwt.WPF.dll", "Xwt.WPFBackend.WPFEngine, Xwt.WPF"),
Tuple.Create ("Xwt.XamMac.dll", "Xwt.Mac.MacEngine, Xwt.XamMac")
};
Type Application {
get; set;
}
public XwtMainLoopIntegration ()
{
Application = Type.GetType ("Xwt.Application, Xwt");
if (Application == null)
throw new NotSupportedException ();
}
public void InitializeToolkit ()
{
Type assemblyType = typeof (Assembly);
PropertyInfo locationProperty = assemblyType.GetProperty ("Location");
if (locationProperty == null)
throw new NotSupportedException();
if (TestRunner.LoadFileMethod == null)
throw new NotSupportedException();
string assemblyDirectory = Path.GetDirectoryName ((string)locationProperty.GetValue (Application.Assembly, null));
// Firstly init Xwt
var initialized = false;
var initMethods = Application.GetMethods (System.Reflection.BindingFlags.Public | System.Reflection.BindingFlags.Static);
var initMethod = initMethods.First (m => m.Name == "Initialize" && m.GetParameters ().Length == 1 && m.GetParameters ()[0].ParameterType == typeof (string));
foreach (var impl in backends) {
var xwtImpl = Path.Combine (assemblyDirectory, impl.Item1);
if (File.Exists (xwtImpl)) {
TestRunner.LoadFileMethod.Invoke (null, new[] { xwtImpl });
initMethod.Invoke (null, new object[] { impl.Item2 });
initialized = true;
break;
}
}
if (!initialized)
initMethod.Invoke (null, new object[] { null });
}
public void InvokeOnMainLoop (InvokerHelper helper)
{
var application = Type.GetType ("Xwt.Application, Xwt");
var invokeOnMainThreadMethod = application.GetMethod ("Invoke", System.Reflection.BindingFlags.Public | System.Reflection.BindingFlags.Static);
var invoker = Delegate.CreateDelegate (invokeOnMainThreadMethod.GetParameters () [0].ParameterType, helper, "Invoke");
invokeOnMainThreadMethod.Invoke (null, new [] { invoker });
}
public void RunMainLoop ()
{
Application.GetMethod ("Run").Invoke (null, null);
}
public void Shutdown (int exitCode)
{
var method = Application.GetMethod("Exit", new Type[] { typeof(int) });
if (method != null)
method.Invoke(null, new object[] { exitCode });
else
Application.GetMethod("Exit").Invoke(null, null);
}
}
class ConsoleMainLoop : System.Threading.SynchronizationContext, IMainLoopIntegration
{
System.Collections.Generic.Queue<InvokerHelper> work =
new System.Collections.Generic.Queue<InvokerHelper>();
System.Collections.Generic.Queue<Tuple<System.Threading.SendOrPostCallback, object>> contextWork =
new System.Collections.Generic.Queue<Tuple<System.Threading.SendOrPostCallback, object>>();
bool endLoop;
public void InitializeToolkit()
{
var runtime = Type.GetType("MonoDevelop.Core.Runtime, MonoDevelop.Core");
if (runtime == null)
return;
var property = runtime.GetProperty ("MainSynchronizationContext", System.Reflection.BindingFlags.Public | System.Reflection.BindingFlags.Static);
if (property == null)
return;
System.Threading.SynchronizationContext.SetSynchronizationContext(this);
property.SetValue (null, System.Threading.SynchronizationContext.Current);
}
public void InvokeOnMainLoop (InvokerHelper helper)
{
lock (work)
{
work.Enqueue (helper);
System.Threading.Monitor.Pulse (work);
}
}
public void RunMainLoop ()
{
do
{
InvokerHelper next = null;
Tuple<System.Threading.SendOrPostCallback, object> nextContext = null;
lock (work)
{
if (work.Count > 0 && !endLoop)
next = work.Dequeue ();
else if (contextWork.Count > 0 && !endLoop)
nextContext = contextWork.Dequeue ();
else if (!endLoop)
System.Threading.Monitor.Wait (work);
}
if (next != null)
{
try
{
next.Invoke ();
}
catch (Exception ex)
{
Console.WriteLine (ex);
}
}
if (nextContext != null)
{
try
{
nextContext.Item1(nextContext.Item2);
}
catch (Exception ex)
{
Console.WriteLine(ex);
}
}
} while (!endLoop);
}
public void Shutdown ()
{
lock (work)
{
endLoop = true;
System.Threading.Monitor.Pulse (work);
}
}
public override void Post (System.Threading.SendOrPostCallback d, object state)
{
lock (work)
{
contextWork.Enqueue (new Tuple<System.Threading.SendOrPostCallback, object>(d, state));
System.Threading.Monitor.Pulse (work);
}
}
public override void Send (System.Threading.SendOrPostCallback d, object state)
{
var evt = new System.Threading.ManualResetEventSlim (false);
Exception exception = null;
Post (s =>
{
try
{
d.Invoke (state);
}
catch (Exception ex)
{
exception = ex;
}
finally
{
System.Threading.Thread.MemoryBarrier ();
evt.Set ();
}
}, null);
evt.Wait ();
if (exception != null)
throw exception;
}
}
}
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