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package org.holoeverywhere.widget;
import android.database.DataSetObserver;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ListAdapter;
import android.widget.WrapperListAdapter;
public class ListAdapterWrapper implements WrapperListAdapter {
public static interface ListAdapterCallback {
public void onChanged();
public void onInvalidated();
public View onPrepareView(View view, int position);
}
private final class WrapperDataSetObserver extends DataSetObserver {
private DataSetObserver mDataSetObserver;
public WrapperDataSetObserver(DataSetObserver dataSetObserver) {
mDataSetObserver = dataSetObserver;
}
@Override
public void onChanged() {
mDataSetObserver.onChanged();
if (mCallback != null) {
mCallback.onChanged();
}
}
@Override
public void onInvalidated() {
mDataSetObserver.onInvalidated();
if (mCallback != null) {
mCallback.onInvalidated();
}
}
}
private final ListAdapterCallback mCallback;
private DataSetObserver mLastDataSetObserver;
private final ListAdapter mWrapped;
public ListAdapterWrapper(ListAdapter wrapped) {
this(wrapped, null);
}
public ListAdapterWrapper(ListAdapter wrapped, ListAdapterCallback callback) {
mWrapped = wrapped;
mCallback = callback;
}
@Override
public boolean areAllItemsEnabled() {
return mWrapped.areAllItemsEnabled();
}
@Override
public int getCount() {
return mWrapped.getCount();
}
@Override
public Object getItem(int position) {
return mWrapped.getItem(position);
}
@Override
public long getItemId(int position) {
return mWrapped.getItemId(position);
}
@Override
public int getItemViewType(int position) {
return mWrapped.getItemViewType(position);
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
return onPrepareView(mWrapped.getView(position, convertView, parent), position);
}
@Override
public int getViewTypeCount() {
return mWrapped.getViewTypeCount();
}
@Override
public ListAdapter getWrappedAdapter() {
return mWrapped;
}
@Override
public boolean hasStableIds() {
return mWrapped.hasStableIds();
}
@Override
public boolean isEmpty() {
return mWrapped.isEmpty();
}
@Override
public boolean isEnabled(int position) {
return mWrapped.isEnabled(position);
}
public void notifyDataSetChanged() {
if (mLastDataSetObserver != null) {
mLastDataSetObserver.onChanged();
}
}
public View onPrepareView(View view, int position) {
if (mCallback != null) {
return mCallback.onPrepareView(view, position);
}
return view;
}
@Override
public void registerDataSetObserver(DataSetObserver dataSetObserver) {
mWrapped.registerDataSetObserver(mLastDataSetObserver = new WrapperDataSetObserver(
dataSetObserver));
}
@Override
public void unregisterDataSetObserver(DataSetObserver dataSetObserver) {
mWrapped.unregisterDataSetObserver(mLastDataSetObserver);
mLastDataSetObserver = null;
}
}
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