/**
* Update the view content according to the entity given in parameter if it can handle it in its
* current state The returned IEntity will be the one currently managed by this view
*
* @param e an IEntity
* @return IEntity that is currently managed by this view
*/
public IEntity registerEntity(IEntity e) {
switch (state) {
case CONFIRM:
Toast.makeText(ctx, TEXT_SELECT_ENT_WHEN_DRAWING, Toast.LENGTH_LONG).show();
return this.entity;
default:
if (this.entity != null) {
this.entity.deleteObserver(this); // do not observe old entity anymore
}
this.entity = e; // register the new entity
this.entity.addObserver(this); // observe the new entity
this.icon = e.getIcon();
this.msg = e.getType() + e.getMessage();
switch (entity.getState()) {
case SAVED:
state = State.DELETION;
break;
case NEW:
state = State.SELECTION;
break;
case ON_MAP:
state = State.CONFIRM;
break;
}
updateUI();
show();
return entity;
}
}
@Override
public void update(Observable o, Object arg) {
if (arg instanceof IEntity) {
IEntity e = (IEntity) arg;
switch (e.getState()) {
case SAVED:
hide();
break;
case ON_MAP:
if (e instanceof IShapedEntity) {
IShapedEntity sEnt = (IShapedEntity) e;
if (sEnt.isPersistable()) {
actionBtn.setEnabled(true);
actionBtn.setTextColor(Color.WHITE);
} else {
actionBtn.setEnabled(false);
actionBtn.setTextColor(Color.GRAY);
}
state = State.CONFIRM;
updateUI();
show();
}
break;
}
} else if (arg instanceof IUndoRedoEngine) {
IUndoRedoEngine engine = (IUndoRedoEngine) arg;
if (engine.canRedo()) {
redoView.setEnabled(true);
redoView.setAlpha(OPAQUE);
} else {
redoView.setEnabled(false);
redoView.setAlpha(TRANSLUCENT);
}
if (engine.canUndo()) {
undoView.setEnabled(true);
undoView.setAlpha(OPAQUE);
} else {
undoView.setEnabled(false);
undoView.setAlpha(TRANSLUCENT);
}
} else {
Log.w(TAG, "I don't know how to update myself with this object " + arg + " !");
}
}