Mercurial > jhg

annotate src/org/tmatesoft/hg/internal/LifecycleBridge.java @ 599:55b7987c1796

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Do not instantiate intermediate arrays
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Fri, 03 May 2013 15:29:26 +0200
parents 1ee452f31187
children
rev   line source
520
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
1 /*
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
2 * Copyright (c) 2012 TMate Software Ltd
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
3 *
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
4 * This program is free software; you can redistribute it and/or modify
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
5 * it under the terms of the GNU General Public License as published by
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
6 * the Free Software Foundation; version 2 of the License.
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
7 *
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
8 * This program is distributed in the hope that it will be useful,
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
11 * GNU General Public License for more details.
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
12 *
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
13 * For information on how to redistribute this software under
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
14 * the terms of a license other than GNU General Public License
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
15 * contact TMate Software at support@hg4j.com
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
16 */
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
17 package org.tmatesoft.hg.internal;
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
18
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
19 import org.tmatesoft.hg.util.CancelSupport;
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
20 import org.tmatesoft.hg.util.CancelledException;
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
21 import org.tmatesoft.hg.util.ProgressSupport;
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
22
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
23 /**
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
24 * Bridge low-level life-cycle ({@link Lifecycle}) API with high-level one ({@link ProgressSupport} and {@link CancelSupport}).
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
25 *
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
26 * @author Artem Tikhomirov
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
27 * @author TMate Software Ltd.
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
28 */
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
29 public class LifecycleBridge implements Lifecycle {
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
30 private final ProgressSupport progressHelper;
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
31 private final CancelSupport cancelSupport;
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
32 // may be null unless #start() is invoked
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
33 private Callback receiver;
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
34 private CancelledException cancellation;
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
35
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
36
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
37 public LifecycleBridge(ProgressSupport progress, CancelSupport cancel) {
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
38 progressHelper = progress;
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
39 cancelSupport = cancel;
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
40 }
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
41
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
42 public void start(int count, Callback callback, Object token) {
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
43 receiver = callback;
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
44 if (progressHelper != null) {
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
45 progressHelper.start(count);
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
46 }
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
47 }
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
48
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
49 public void finish(Object token) {
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
50 if (progressHelper != null) {
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
51 progressHelper.done();
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
52 }
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
53 receiver = null;
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
54 }
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
55
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
56 // XXX SHALL work without start/finish sequence because
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
57 // HgLogCommand invokes ChangesetTransformer#next directly (i.e. not from
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
58 // inside a library's #range() or similar) to process changesets in unnatural order.
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
59 public void nextStep() {
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
60 if (progressHelper != null) {
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
61 progressHelper.worked(1);
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
62 }
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
63 if (cancelSupport == null) {
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
64 return;
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
65 }
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
66 try {
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
67 cancelSupport.checkCancelled();
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
68 } catch (CancelledException ex) {
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
69 if (receiver != null) {
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
70 receiver.stop();
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
71 }
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
72 cancellation = ex;
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
73 }
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
74 }
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
75
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
76 public void stop() {
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
77 if (receiver != null) {
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
78 receiver.stop();
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
79 }
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
80 }
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
81
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
82 /**
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
83 * @return <code>true</code> iff {@link CancelledException} was thrown and catched. Forced stop doesn't count
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
84 */
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
85 public boolean isCancelled() {
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
86 return cancellation != null;
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
87 }
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
88
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
89 public CancelledException getCancelOrigin() {
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
90 return cancellation;
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
91 }
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
92 }