private boolean internalRemove(Object object) {
if (mMedia.remove(object)) {
if (object instanceof TextModel) {
mText = null;
} else if (object instanceof ImageModel) {
mImage = null;
mCanAddVideo = true;
} else if (object instanceof AudioModel) {
mAudio = null;
mCanAddVideo = true;
} else if (object instanceof VideoModel) {
mVideo = null;
mCanAddImage = true;
mCanAddAudio = true;
}
// If the media is resizable, at this point consider it to be zero length.
// Just before we send the slideshow, we take the remaining space in the
// slideshow and equally allocate it to all the resizeable media items and resize them.
int decreaseSize =
((MediaModel) object).getMediaResizable() ? 0 : ((MediaModel) object).getMediaSize();
decreaseSlideSize(decreaseSize);
decreaseMessageSize(decreaseSize);
((Model) object).unregisterAllModelChangedObservers();
return true;
}
return false;
}
private void internalAddOrReplace(MediaModel old, MediaModel media) {
// If the media is resizable, at this point consider it to be zero length.
// Just before we send the slideshow, we take the remaining space in the
// slideshow and equally allocate it to all the resizeable media items and resize them.
int addSize = media.getMediaResizable() ? 0 : media.getMediaSize();
int removeSize;
if (old == null) {
if (null != mParent) {
mParent.checkMessageSize(addSize);
}
mMedia.add(media);
increaseSlideSize(addSize);
increaseMessageSize(addSize);
} else {
removeSize = old.getMediaResizable() ? 0 : old.getMediaSize();
if (addSize > removeSize) {
if (null != mParent) {
mParent.checkMessageSize(addSize - removeSize);
}
increaseSlideSize(addSize - removeSize);
increaseMessageSize(addSize - removeSize);
} else {
decreaseSlideSize(removeSize - addSize);
decreaseMessageSize(removeSize - addSize);
}
mMedia.set(mMedia.indexOf(old), media);
old.unregisterAllModelChangedObservers();
}
for (IModelChangedObserver observer : mModelChangedObservers) {
media.registerModelChangedObserver(observer);
}
}
public void clear() {
if (mMedia.size() > 0) {
for (MediaModel media : mMedia) {
media.unregisterAllModelChangedObservers();
int decreaseSize = media.getMediaSize();
decreaseSlideSize(decreaseSize);
decreaseMessageSize(decreaseSize);
}
mMedia.clear();
mText = null;
mImage = null;
mAudio = null;
mVideo = null;
mCanAddImage = true;
mCanAddAudio = true;
mCanAddVideo = true;
notifyModelChanged(true);
}
}