/*
* Copyright (C) 2011 Cyril Mottier (http://www.cyrilmottier.com)
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package greendroid.widget;
import android.database.DataSetObservable;
import android.database.DataSetObserver;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Adapter;
/**
* The base implementation of an {@link Adapter} to use with a {@link PagedView}
* . Clients may create classes that extends from this base implementation and
* will most of the time override the {@link PagedAdapter#getCount()} and
* {@link PagedAdapter#getView(int, View, ViewGroup)} methods.
*
* @author Cyril Mottier
*/
public abstract class PagedAdapter implements Adapter {
private final DataSetObservable mDataSetObservable = new DataSetObservable();
public abstract int getCount();
public abstract Object getItem(int position);
public abstract long getItemId(int position);
public boolean hasStableIds() {
throw new UnsupportedOperationException("hasStableIds(int) is not supported in the context of a SwipeAdapter");
}
public abstract View getView(int position, View convertView, ViewGroup parent);
public final int getItemViewType(int position) {
throw new UnsupportedOperationException("getItemViewType(int) is not supported in the context of a SwipeAdapter");
}
public final int getViewTypeCount() {
throw new UnsupportedOperationException("getViewTypeCount() is not supported in the context of a SwipeAdapter");
}
public final boolean isEmpty() {
throw new UnsupportedOperationException("isEmpty() is not supported in the context of a SwipeAdapter");
}
public void registerDataSetObserver(DataSetObserver observer) {
mDataSetObservable.registerObserver(observer);
}
public void unregisterDataSetObserver(DataSetObserver observer) {
mDataSetObservable.unregisterObserver(observer);
}
public void notifyDataSetChanged() {
mDataSetObservable.notifyChanged();
}
}