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package tim.prune.cmd;
import tim.prune.DataSubscriber;
import tim.prune.data.Photo;
import tim.prune.data.TrackInfo;
/**
* Command to insert or append a single photo to the list
*/
public class InsertPhotoCmd extends Command
{
private final Photo _photo;
private final int _photoIndex;
/**
* Constructor
* @param inPhoto photo to append
*/
public InsertPhotoCmd(Photo inPhoto) {
this(null, inPhoto, -1);
}
/**
* Constructor to make inverse
* @param inParent parent command
* @param inPhoto photo
* @param inPhotoIndex point index of insertion
*/
InsertPhotoCmd(Command inParent, Photo inPhoto, int inPhotoIndex)
{
super(inParent);
_photo = inPhoto;
_photoIndex = inPhotoIndex;
}
@Override
public int getUpdateFlags() {
return DataSubscriber.MEDIA_MODIFIED;
}
@Override
protected boolean executeCommand(TrackInfo inInfo)
{
if (_photo == null) {
return false;
}
if (_photoIndex < 0) {
inInfo.getPhotoList().add(_photo);
}
else {
inInfo.getPhotoList().add(_photo, _photoIndex);
}
return true;
}
@Override
protected Command makeInverse(TrackInfo inInfo)
{
int photoIndex = _photoIndex < 0 ? inInfo.getPhotoList().getCount() : _photoIndex;
return new RemovePhotoCmd(this, photoIndex);
}
}
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