public SlideModel set(int location, SlideModel object) {
SlideModel slide = mSlides.get(location);
if (null != object) {
int removeSize = 0;
int addSize = object.getSlideSize();
if (null != slide) {
removeSize = slide.getSlideSize();
}
if (addSize > removeSize) {
checkMessageSize(addSize - removeSize);
increaseMessageSize(addSize - removeSize);
} else {
decreaseMessageSize(removeSize - addSize);
}
}
slide = mSlides.set(location, object);
if (slide != null) {
slide.unregisterAllModelChangedObservers();
}
if (object != null) {
object.registerModelChangedObserver(this);
for (IModelChangedObserver observer : mModelChangedObservers) {
object.registerModelChangedObserver(observer);
}
}
notifyModelChanged(true);
return slide;
}
public SlideModel remove(int location) {
SlideModel slide = mSlides.remove(location);
if (slide != null) {
decreaseMessageSize(slide.getSlideSize());
slide.unregisterAllModelChangedObservers();
notifyModelChanged(true);
}
return slide;
}
public boolean remove(Object object) {
if ((object != null) && mSlides.remove(object)) {
SlideModel slide = (SlideModel) object;
decreaseMessageSize(slide.getSlideSize());
slide.unregisterAllModelChangedObservers();
notifyModelChanged(true);
return true;
}
return false;
}