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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.Fragment;
import android.app.LoaderManager.LoaderCallbacks;
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.ActionMode;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AbsListView.MultiChoiceModeListener;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.GridView;
import android.widget.ShareActionProvider;
import android.widget.ShareActionProvider.OnShareTargetSelectedListener;
import com.android.gallery3d.R;
import com.android.gallery3d.app.Gallery;
import com.android.gallery3d.data.MediaItem;
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;
import java.util.HashSet;
import java.util.Set;
public class PhotoSetFragment extends Fragment implements LoaderCallbacks<Cursor>,
OnItemClickListener, SelectionManager.SelectedUriSource, MultiChoiceModeListener,
OnShareTargetSelectedListener {
private static final int LOADER_PHOTOSET = 1;
private GridView mPhotoSetView;
private View mEmptyView;
private boolean mInitialLoadComplete = false;
private LoaderCompatShim<Cursor> mLoaderCompatShim;
private PhotoThumbnailAdapter mAdapter;
private SelectionManager mSelectionManager;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
GalleryActivity activity = (GalleryActivity) getActivity();
mSelectionManager = activity.getSelectionManager();
mAdapter = new PhotoThumbnailAdapter(activity);
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View root = inflater.inflate(R.layout.photo_set, container, false);
mPhotoSetView = (GridView) root.findViewById(android.R.id.list);
// TODO: Remove once UI stabilizes
mPhotoSetView.setColumnWidth(MediaItemsLoader.getThumbnailSize());
mPhotoSetView.setOnItemClickListener(this);
mEmptyView = root.findViewById(android.R.id.empty);
mEmptyView.setVisibility(View.GONE);
mPhotoSetView.setAdapter(mAdapter);
mPhotoSetView.setChoiceMode(GridView.CHOICE_MODE_MULTIPLE_MODAL);
mPhotoSetView.setMultiChoiceModeListener(this);
getLoaderManager().initLoader(LOADER_PHOTOSET, null, this);
updateEmptyStatus();
return root;
}
private void updateEmptyStatus() {
boolean empty = (mAdapter == null || mAdapter.getCount() == 0);
mPhotoSetView.setVisibility(empty ? View.GONE : View.VISIBLE);
mEmptyView.setVisibility(empty && mInitialLoadComplete
? View.VISIBLE : View.GONE);
}
@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());
mInitialLoadComplete = false;
mLoaderCompatShim = loader;
mAdapter.setDrawableFactory(mLoaderCompatShim);
return loader;
}
@Override
public void onLoadFinished(Loader<Cursor> loader,
Cursor data) {
mAdapter.swapCursor(data);
mInitialLoadComplete = true;
updateEmptyStatus();
}
private Set<Uri> mSelectedUris = new HashSet<Uri>();
private ArrayList<Uri> mSelectedUrisArray = new ArrayList<Uri>();
@Override
public ArrayList<Uri> getSelectedShareableUris() {
mSelectedUrisArray.clear();
mSelectedUrisArray.addAll(mSelectedUris);
return mSelectedUrisArray;
}
public ArrayList<Uri> getSelectedShareableUrisUncached() {
mSelectedUrisArray.clear();
SparseBooleanArray selected = mPhotoSetView.getCheckedItemPositions();
for (int i = 0; i < selected.size(); i++) {
if (selected.valueAt(i)) {
Cursor item = mAdapter.getItem(selected.keyAt(i));
int supported = item.getInt(PhotoSetLoader.INDEX_SUPPORTED_OPERATIONS);
if ((supported & MediaItem.SUPPORT_SHARE) > 0) {
mSelectedUrisArray.add(mLoaderCompatShim.uriForItem(item));
}
}
}
return mSelectedUrisArray;
}
@Override
public void onLoaderReset(Loader<Cursor> loader) {
}
private ShareActionProvider mShareActionProvider;
private ActionMode mActionMode;
private boolean mSharePending = false;
private void updateSelectedTitle(ActionMode mode) {
int count = mPhotoSetView.getCheckedItemCount();
mode.setTitle(getResources().getQuantityString(
R.plurals.number_of_items_selected, count, count));
}
@Override
public void onItemCheckedStateChanged(ActionMode mode, int position, long id,
boolean checked) {
updateSelectedTitle(mode);
Cursor item = mAdapter.getItem(position);
if (checked) {
mSelectedUris.add(mLoaderCompatShim.uriForItem(item));
} else {
mSelectedUris.remove(mLoaderCompatShim.uriForItem(item));
}
mSelectionManager.onItemSelectedStateChanged(mShareActionProvider,
item.getInt(PhotoSetLoader.INDEX_MEDIA_TYPE),
item.getInt(PhotoSetLoader.INDEX_SUPPORTED_OPERATIONS),
checked);
}
@Override
public boolean onCreateActionMode(ActionMode mode, Menu menu) {
mSelectionManager.setSelectedUriSource(PhotoSetFragment.this);
mActionMode = mode;
MenuInflater inflater = mode.getMenuInflater();
inflater.inflate(R.menu.gallery_multiselect, menu);
MenuItem menuItem = menu.findItem(R.id.menu_share);
mShareActionProvider = (ShareActionProvider) menuItem.getActionProvider();
mShareActionProvider.setOnShareTargetSelectedListener(this);
updateSelectedTitle(mode);
return true;
}
@Override
public void onDestroyActionMode(ActionMode mode) {
mSelectedUris.clear();
if (mSharePending) {
// onDestroyActionMode gets called when the share target was selected,
// but apparently before the ArrayList is serialized in the intent
// so we can't clear the old one here.
mSelectedUrisArray = new ArrayList<Uri>();
mSharePending = false;
} else {
mSelectedUrisArray.clear();
}
mSelectionManager.onClearSelection();
mSelectionManager.setSelectedUriSource(null);
mShareActionProvider = null;
mActionMode = null;
}
@Override
public boolean onPrepareActionMode(ActionMode mode, Menu menu) {
updateSelectedTitle(mode);
return false;
}
@Override
public boolean onShareTargetSelected(ShareActionProvider provider, Intent intent) {
mSharePending = true;
mActionMode.finish();
return false;
}
@Override
public boolean onActionItemClicked(ActionMode mode, MenuItem item) {
return false;
}
}
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