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Merge pull request #1014 from BDisp/net-driver-improvements
Trying fixing #518. Almost functions work on both Windows and Unix with the NetDriver.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,89 @@ | ||
| using System; | ||
| using System.Threading; | ||
|
|
||
| namespace Terminal.Gui { | ||
| /// <summary> | ||
| /// Mainloop intended to be used with the .NET System.Console API, and can | ||
| /// be used on Windows and Unix, it is cross platform but lacks things like | ||
| /// file descriptor monitoring. | ||
| /// </summary> | ||
| /// <remarks> | ||
| /// This implementation is used for FakeDriver. | ||
| /// </remarks> | ||
| public class FakeMainLoop : IMainLoopDriver { | ||
| AutoResetEvent keyReady = new AutoResetEvent (false); | ||
| AutoResetEvent waitForProbe = new AutoResetEvent (false); | ||
| ConsoleKeyInfo? keyResult = null; | ||
| MainLoop mainLoop; | ||
| Func<ConsoleKeyInfo> consoleKeyReaderFn = null; | ||
|
|
||
| /// <summary> | ||
| /// Invoked when a Key is pressed. | ||
| /// </summary> | ||
| public Action<ConsoleKeyInfo> KeyPressed; | ||
|
|
||
| /// <summary> | ||
| /// Initializes the class. | ||
| /// </summary> | ||
| /// <remarks> | ||
| /// Passing a consoleKeyReaderfn is provided to support unit test scenarios. | ||
| /// </remarks> | ||
| /// <param name="consoleKeyReaderFn">The method to be called to get a key from the console.</param> | ||
| public FakeMainLoop (Func<ConsoleKeyInfo> consoleKeyReaderFn = null) | ||
| { | ||
| if (consoleKeyReaderFn == null) { | ||
| throw new ArgumentNullException ("key reader function must be provided."); | ||
| } | ||
| this.consoleKeyReaderFn = consoleKeyReaderFn; | ||
| } | ||
|
|
||
| void WindowsKeyReader () | ||
| { | ||
| while (true) { | ||
| waitForProbe.WaitOne (); | ||
| keyResult = consoleKeyReaderFn (); | ||
| keyReady.Set (); | ||
| } | ||
| } | ||
|
|
||
| void IMainLoopDriver.Setup (MainLoop mainLoop) | ||
| { | ||
| this.mainLoop = mainLoop; | ||
| Thread readThread = new Thread (WindowsKeyReader); | ||
| readThread.Start (); | ||
| } | ||
|
|
||
| void IMainLoopDriver.Wakeup () | ||
| { | ||
| } | ||
|
|
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| bool IMainLoopDriver.EventsPending (bool wait) | ||
| { | ||
| long now = DateTime.UtcNow.Ticks; | ||
|
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| int waitTimeout; | ||
| if (mainLoop.timeouts.Count > 0) { | ||
| waitTimeout = (int)((mainLoop.timeouts.Keys [0] - now) / TimeSpan.TicksPerMillisecond); | ||
| if (waitTimeout < 0) | ||
| return true; | ||
| } else | ||
| waitTimeout = -1; | ||
|
|
||
| if (!wait) | ||
| waitTimeout = 0; | ||
|
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| keyResult = null; | ||
| waitForProbe.Set (); | ||
| keyReady.WaitOne (waitTimeout); | ||
| return keyResult.HasValue; | ||
| } | ||
|
|
||
| void IMainLoopDriver.MainIteration () | ||
| { | ||
| if (keyResult.HasValue) { | ||
| KeyPressed?.Invoke (keyResult.Value); | ||
| keyResult = null; | ||
| } | ||
| } | ||
| } | ||
| } |
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