X-Git-Url: https://gitweb.fperrin.net/?p=GpsPrune.git;a=blobdiff_plain;f=src%2Ftim%2Fprune%2Fundo%2FUndoLoadPhotos.java;fp=src%2Ftim%2Fprune%2Fundo%2FUndoLoadPhotos.java;h=b8c2b35970fbb05482ad8cfc4dd1bbe95aa0f08a;hp=0000000000000000000000000000000000000000;hb=ce6f2161b8596f7018d6a76bff79bc9e571f35fd;hpb=2d8cb72e84d5cc1089ce77baf1e34ea3ea2f8465

diff --git a/src/tim/prune/undo/UndoLoadPhotos.java b/src/tim/prune/undo/UndoLoadPhotos.java
new file mode 100644
index 0000000..b8c2b35
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+++ b/src/tim/prune/undo/UndoLoadPhotos.java
@@ -0,0 +1,73 @@
+package tim.prune.undo;
+
+import tim.prune.I18nManager;
+import tim.prune.data.DataPoint;
+import tim.prune.data.Photo;
+import tim.prune.data.TrackInfo;
+
+/**
+ * Operation to undo a load photos operation
+ */
+public class UndoLoadPhotos implements UndoOperation
+{
+	private int _numPhotos = -1;
+	private int _numPoints = -1;
+
+
+	/**
+	 * Constructor
+	 * @param inNumPhotos number of photos loaded
+	 * @param inNumPoints number of points loaded
+	 */
+	public UndoLoadPhotos(int inNumPhotos, int inNumPoints)
+	{
+		_numPhotos = inNumPhotos;
+		_numPoints = inNumPoints;
+	}
+
+
+	/**
+	 * @return description of operation including number of photos loaded
+	 */
+	public String getDescription()
+	{
+		String desc = I18nManager.getText("undo.loadphotos");
+		if (_numPhotos > 0)
+			desc = desc + " (" + _numPhotos + ")";
+		return desc;
+	}
+
+
+	/**
+	 * Perform the undo operation on the given Track
+	 * Delete both track points and Photo objects
+	 * @param inTrackInfo TrackInfo object on which to perform the operation
+	 */
+	public void performUndo(TrackInfo inTrackInfo) throws UndoException
+	{
+		int cropIndex;
+		// crop track to previous size
+		if (_numPoints > 0)
+		{
+			cropIndex = inTrackInfo.getTrack().getNumPoints() - _numPoints;
+			inTrackInfo.getTrack().cropTo(cropIndex);
+		}
+		else
+		{
+			// Loop through the points (if any) and detach them
+			for (int i=0; i<_numPhotos; i++)
+			{
+				Photo photo = inTrackInfo.getPhotoList().getPhoto(inTrackInfo.getPhotoList().getNumPhotos() - 1 - i);
+				if (photo.isConnected()) {
+					DataPoint point = photo.getDataPoint();
+					if (point != null) {point.setPhoto(null);}
+				}
+			}
+		}
+		// crop photo list to previous size
+		cropIndex = inTrackInfo.getPhotoList().getNumPhotos() - _numPhotos;
+		inTrackInfo.getPhotoList().cropTo(cropIndex);
+		// clear selection
+		inTrackInfo.getSelection().clearAll();
+	}
+}
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