X-Git-Url: http://gitweb.fperrin.net/?p=GpsPrune.git;a=blobdiff_plain;f=src%2Ftim%2Fprune%2Fundo%2FUndoLoad.java;fp=src%2Ftim%2Fprune%2Fundo%2FUndoLoad.java;h=377f21c22f93f7b0a95f7c73378a30a09d5276c7;hp=0000000000000000000000000000000000000000;hb=ce6f2161b8596f7018d6a76bff79bc9e571f35fd;hpb=2d8cb72e84d5cc1089ce77baf1e34ea3ea2f8465

diff --git a/src/tim/prune/undo/UndoLoad.java b/src/tim/prune/undo/UndoLoad.java
new file mode 100644
index 0000000..377f21c
--- /dev/null
+++ b/src/tim/prune/undo/UndoLoad.java
@@ -0,0 +1,111 @@
+package tim.prune.undo;
+
+import tim.prune.I18nManager;
+import tim.prune.data.DataPoint;
+import tim.prune.data.FileInfo;
+import tim.prune.data.PhotoList;
+import tim.prune.data.TrackInfo;
+
+/**
+ * Operation to undo a load operation
+ */
+public class UndoLoad implements UndoOperation
+{
+	private int _cropIndex = -1;
+	private int _numLoaded = -1;
+	private DataPoint[] _contents = null;
+	private PhotoList _photoList = null;
+	private FileInfo _oldFileInfo = null;
+	// Numbers of each media before operation
+	private int _numPhotos = -1, _numAudios = -1;
+
+
+	/**
+	 * Constructor for appending
+	 * @param inIndex index number of crop point
+	 * @param inNumLoaded number of points loaded
+	 */
+	public UndoLoad(int inIndex, int inNumLoaded)
+	{
+		_cropIndex = inIndex;
+		_numLoaded = inNumLoaded;
+		_contents = null;
+	}
+
+
+	/**
+	 * Constructor for replacing
+	 * @param inOldTrackInfo track info being replaced
+	 * @param inNumLoaded number of points loaded
+	 * @param inPhotoList photo list, if any
+	 */
+	public UndoLoad(TrackInfo inOldTrackInfo, int inNumLoaded, PhotoList inPhotoList)
+	{
+		_cropIndex = -1;
+		_numLoaded = inNumLoaded;
+		_contents = inOldTrackInfo.getTrack().cloneContents();
+		_oldFileInfo = inOldTrackInfo.getFileInfo().clone();
+		_photoList = inPhotoList;
+	}
+
+
+	/**
+	 * @return description of operation including number of points loaded
+	 */
+	public String getDescription()
+	{
+		String desc = I18nManager.getText("undo.load");
+		if (_numLoaded > 0)
+			desc = desc + " (" + _numLoaded + ")";
+		return desc;
+	}
+
+	/**
+	 * Set the number of photos and audios before the load operation
+	 * @param inNumPhotos number of photos
+	 * @param inNumAudios number of audios
+	 */
+	public void setNumPhotosAudios(int inNumPhotos, int inNumAudios)
+	{
+		_numPhotos = inNumPhotos;
+		_numAudios = inNumAudios;
+	}
+
+	/**
+	 * Perform the undo operation on the given Track
+	 * @param inTrackInfo TrackInfo object on which to perform the operation
+	 */
+	public void performUndo(TrackInfo inTrackInfo) throws UndoException
+	{
+		// remove source from fileinfo
+		if (_oldFileInfo == null) {
+			inTrackInfo.getFileInfo().removeSource();
+		}
+		else {
+			inTrackInfo.setFileInfo(_oldFileInfo);
+		}
+		// Crop / replace
+		if (_contents == null)
+		{
+			// crop track to previous size
+			inTrackInfo.getTrack().cropTo(_cropIndex);
+		}
+		else
+		{
+			// replace photos how they were
+			if (_photoList != null) {
+				inTrackInfo.getPhotoList().restore(_photoList);
+			}
+			// Crop media lists to previous size (if specified)
+			if (_numPhotos > -1) {inTrackInfo.getPhotoList().cropTo(_numPhotos);}
+			if (_numAudios > -1) {inTrackInfo.getAudioList().cropTo(_numAudios);}
+			// replace track contents with old
+			if (!inTrackInfo.getTrack().replaceContents(_contents))
+			{
+				throw new UndoException(getDescription());
+			}
+		}
+		// clear selection
+		inTrackInfo.getSelection().clearAll();
+	}
+}