[gnome-subtitles] Command to perform timings synchronize

[Pedro Daniel da Rocha Melo e Castro <pcastro src gnome org>]

commit 8b79b128947d7979e52bf6e036bf6a4bab23874f
Author: Pedro Castro <mail pedrocastro org>
Date:   Sat May 23 12:40:18 2009 +0100

    Command to perform timings synchronize
---
 .../Core/Command/SynchronizeTimingsCommand.cs      |  104 ++++++++++++++++++++
 1 files changed, 104 insertions(+), 0 deletions(-)

diff --git a/src/GnomeSubtitles/Core/Command/SynchronizeTimingsCommand.cs b/src/GnomeSubtitles/Core/Command/SynchronizeTimingsCommand.cs
new file mode 100644
index 0000000..dfe28ec
--- /dev/null
+++ b/src/GnomeSubtitles/Core/Command/SynchronizeTimingsCommand.cs
@@ -0,0 +1,104 @@
+/*
+ * This file is part of Gnome Subtitles.
+ * Copyright (C) 2009 Pedro Castro
+ *
+ * Gnome Subtitles is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * Gnome Subtitles is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+using GnomeSubtitles.Ui.View;
+using Gtk;
+using Mono.Unix;
+using SubLib.Core.Domain;
+using SubLib.Core.Timing;
+using System;
+
+namespace GnomeSubtitles.Core.Command {
+
+public class SynchronizeTimingsCommand : FixedMultipleSelectionCommand {
+	private static string description = Catalog.GetString("Synchronizing timings");
+
+	private SyncPoints syncPoints = null;
+	private bool toSyncAll = false;
+	private TimeSpan[] lastTimes = null;
+
+	public SynchronizeTimingsCommand (SyncPoints syncPoints, bool toSyncAll, SelectionIntended selectionIntended, TreePath[] pathRange) : base(description, false, selectionIntended, pathRange, true) {
+		this.syncPoints = syncPoints;
+		this.toSyncAll = toSyncAll;
+	}
+
+	protected override bool ChangeValues () {
+		Ui.View.Subtitles subtitles = Base.Document.Subtitles;
+		
+		if (lastTimes == null) {
+			int[] subtitleRange = GetSubtitleRange(subtitles);
+			TimeSpan[] timesToStore = GetCurrentTimes(subtitleRange, subtitles);
+			SynchronizeOperator syncOp = new SynchronizeOperator(subtitles);
+			if (!syncOp.Sync(syncPoints.Collection, toSyncAll))
+				return false;
+
+			lastTimes = timesToStore;
+		}
+		else {
+			int[] subtitleRange = GetSubtitleRange(subtitles);
+			TimeSpan[] timesToStore = GetCurrentTimes(subtitleRange, subtitles);
+			
+			if (subtitleRange == null)
+				return false;
+
+			int subtitleFrom = subtitleRange[0];
+			int subtitleTo = subtitleRange[1];
+			for (int index = subtitleFrom; index <= subtitleTo ; index++) {
+				Subtitle subtitle = subtitles[index];
+				subtitle.Times.Start = lastTimes[index - subtitleFrom];
+			}
+			lastTimes = timesToStore;
+		}
+		return true;
+	}
+	
+	private TimeSpan[] GetCurrentTimes (int[] subtitleRange, Ui.View.Subtitles subtitles) {
+		int subtitleFrom = subtitleRange[0];
+		int subtitleTo = subtitleRange[1];
+		TimeSpan[] currentTimes = new TimeSpan[subtitleTo - subtitleFrom + 1];
+		
+		for (int index = subtitleFrom; index <= subtitleTo ; index++) {
+			Subtitle subtitle = subtitles[index];
+			currentTimes[index - subtitleFrom] = subtitle.Times.Start;
+		}
+		
+		return currentTimes;
+	}
+	
+	private int[] GetSubtitleRange (Ui.View.Subtitles subtitles) {
+		if (SelectionType == SelectionType.Range) {
+			TreePath[] paths = Paths;
+			int pathFrom = Util.PathToInt(paths[0]);
+			int pathTo = Util.PathToInt(paths[1]);
+			return new int[] {pathFrom, pathTo};
+		}
+		else if (SelectionType == SelectionType.All) {
+			if (subtitles.Count < 2)
+				return null;
+			
+			int pathFrom = 0;
+			int pathTo = subtitles.Count - 1;
+			return new int[] {pathFrom, pathTo};
+		}
+		return null;
+	}
+
+}
+
+}