Mercurial > jhg

diff src/org/tmatesoft/hg/internal/IterateControlMediator.java @ 520:1ee452f31187

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Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Fri, 21 Dec 2012 21:20:26 +0100
parents f9f3e9b67ccc
children
line wrap: on
line diff
--- a/src/org/tmatesoft/hg/internal/IterateControlMediator.java	Thu Dec 20 20:21:59 2012 +0100
+++ b/src/org/tmatesoft/hg/internal/IterateControlMediator.java	Fri Dec 21 21:20:26 2012 +0100
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2011 TMate Software Ltd
+ * Copyright (c) 2011-2012 TMate Software Ltd
  *  
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -28,7 +28,8 @@
 public class IterateControlMediator {
 
 	private final CancelSupport src;
-	private Callback receiver;
+	private final Callback receiver;
+	private CancelledException cancellation;
 
 	public IterateControlMediator(CancelSupport source, Lifecycle.Callback target) {
 		assert target != null;
@@ -40,11 +41,15 @@
 		if (src == null) {
 			return false;
 		}
+		if (cancellation != null) {
+			return true;
+		}
 		try {
 			src.checkCancelled();
 			return false;
 		} catch (CancelledException ex) {
 			receiver.stop();
+			cancellation = ex;
 			return true;
 		}
 	}
@@ -52,4 +57,8 @@
 	public void stop() {
 		receiver.stop();
 	}
+	
+	public CancelledException getCancelException() {
+		return cancellation;
+	}
 }