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/*
* Copyright (C) 2013 The Android Open Source Project
*
* 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 com.android.photos;
import android.app.Activity;
import android.app.Fragment;
import android.app.LoaderManager.LoaderCallbacks;
import android.content.Context;
import android.content.Intent;
import android.content.Loader;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.util.SparseBooleanArray;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.GridView;
import com.android.gallery3d.R;
import com.android.gallery3d.app.Gallery;
import com.android.photos.adapters.PhotoThumbnailAdapter;
import com.android.photos.data.PhotoSetLoader;
import com.android.photos.shims.LoaderCompatShim;
import com.android.photos.shims.MediaItemsLoader;
import java.util.ArrayList;
public class AlbumFragment extends Fragment implements OnItemClickListener,
LoaderCallbacks<Cursor>, MultiChoiceManager.Delegate {
protected static final String KEY_ALBUM_URI = "AlbumUri";
private static final int LOADER_ALBUM = 1;
private GridView mAlbumView;
private View mEmptyView;
private boolean mInitialLoadComplete = false;
private LoaderCompatShim<Cursor> mLoaderCompatShim;
private PhotoThumbnailAdapter mAdapter;
private String mAlbumPath;
private GalleryFragmentHost mHost;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Context context = getActivity();
mAdapter = new PhotoThumbnailAdapter(context);
Bundle args = getArguments();
if (args != null) {
mAlbumPath = args.getString(KEY_ALBUM_URI, null);
}
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View root = inflater.inflate(R.layout.photo_set, container, false);
mAlbumView = (GridView) root.findViewById(android.R.id.list);
// TODO: Remove once UI stabilizes
mAlbumView.setColumnWidth(MediaItemsLoader.getThumbnailSize());
mAlbumView.setOnItemClickListener(this);
mEmptyView = root.findViewById(android.R.id.empty);
mEmptyView.setVisibility(View.GONE);
mAlbumView.setAdapter(mAdapter);
mAlbumView.setChoiceMode(GridView.CHOICE_MODE_MULTIPLE_MODAL);
mAlbumView.setMultiChoiceModeListener(mHost.getMultiChoiceManager());
getLoaderManager().initLoader(LOADER_ALBUM, null, this);
updateEmptyStatus();
return root;
}
private void updateEmptyStatus() {
boolean empty = (mAdapter == null || mAdapter.getCount() == 0);
mAlbumView.setVisibility(empty ? View.GONE : View.VISIBLE);
mEmptyView.setVisibility(empty && mInitialLoadComplete
? View.VISIBLE : View.GONE);
}
@Override
public void onAttach(Activity activity) {
super.onAttach(activity);
mHost = (GalleryFragmentHost) activity;
}
@Override
public void onDetach() {
super.onDetach();
mHost = null;
}
@Override
public void onItemClick(AdapterView<?> parent, View view, int position,
long id) {
if (mLoaderCompatShim == null) {
// Not fully initialized yet, discard
return;
}
Cursor item = mAdapter.getItem(position);
Uri uri = mLoaderCompatShim.uriForItem(item);
Intent intent = new Intent(Intent.ACTION_VIEW, uri);
intent.setClass(getActivity(), Gallery.class);
startActivity(intent);
}
@Override
public Loader<Cursor> onCreateLoader(int id, Bundle args) {
// TODO: Switch to PhotoSetLoader
MediaItemsLoader loader = new MediaItemsLoader(getActivity(), mAlbumPath);
mInitialLoadComplete = false;
mLoaderCompatShim = loader;
mAdapter.setDrawableFactory(mLoaderCompatShim);
return loader;
}
@Override
public void onLoadFinished(Loader<Cursor> loader,
Cursor data) {
mAdapter.swapCursor(data);
mInitialLoadComplete = true;
updateEmptyStatus();
}
@Override
public void onLoaderReset(Loader<Cursor> loader) {
}
@Override
public int getItemMediaType(Object item) {
return ((Cursor) item).getInt(PhotoSetLoader.INDEX_MEDIA_TYPE);
}
@Override
public int getItemSupportedOperations(Object item) {
return ((Cursor) item).getInt(PhotoSetLoader.INDEX_SUPPORTED_OPERATIONS);
}
@Override
public Object getItemAtPosition(int position) {
return mAdapter.getItem(position);
}
private ArrayList<Uri> mSubItemUriTemp = new ArrayList<Uri>(1);
@Override
public ArrayList<Uri> getSubItemUrisForItem(Object item) {
mSubItemUriTemp.clear();
mSubItemUriTemp.add(mLoaderCompatShim.uriForItem((Cursor) item));
return mSubItemUriTemp;
}
@Override
public Object getPathForItemAtPosition(int position) {
return mLoaderCompatShim.getPathForItem(mAdapter.getItem(position));
}
@Override
public void deleteItemWithPath(Object itemPath) {
mLoaderCompatShim.deleteItemWithPath(itemPath);
}
@Override
public SparseBooleanArray getSelectedItemPositions() {
return mAlbumView.getCheckedItemPositions();
}
@Override
public int getSelectedItemCount() {
return mAlbumView.getCheckedItemCount();
}
@Override
public Uri getItemUri(Object item) {
return mLoaderCompatShim.uriForItem((Cursor) item);
}
}
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