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/*
* Copyright (C) 2017 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.car.dialer;
import android.app.Fragment;
import android.app.LoaderManager;
import android.content.CursorLoader;
import android.content.Loader;
import android.database.Cursor;
import android.os.Bundle;
import android.provider.ContactsContract;
import android.support.annotation.Nullable;
import android.support.v7.widget.RecyclerView;
import android.text.TextUtils;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import com.android.car.view.PagedListView;
import java.util.ArrayList;
import java.util.List;
/**
* A fragment that will take a search query, look up contacts that match and display those
* results as a list.
*/
public class ContactResultsFragment extends Fragment implements
LoaderManager.LoaderCallbacks<Cursor> {
private static final String TAG = "ContactResultsFragment";
private static final String KEY_INITIAL_SEARCH_QUERY = "initial_search_query";
private static final String[] CONTACT_DETAILS_PROJECTION = {
ContactsContract.Contacts._ID,
ContactsContract.Contacts.LOOKUP_KEY,
ContactsContract.Contacts.DISPLAY_NAME,
ContactsContract.Contacts.PHOTO_URI
};
/**
* A selection criteria to filter contacts based on the query given by {@link #mSearchQuery}.
* That query is assumed to be the name of a contact.
*/
private static final String CONTACT_SELECTION =
ContactsContract.Contacts.DISPLAY_NAME + " LIKE ? ";
private final ContactResultsAdapter mAdapter = new ContactResultsAdapter();
private PagedListView mContactResultList;
private String mSearchQuery;
private List<RecyclerView.OnScrollListener> mOnScrollListeners = new ArrayList<>();
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Bundle args = getArguments();
if (args != null) {
setSearchQuery(args.getString(KEY_INITIAL_SEARCH_QUERY));
}
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
return inflater.inflate(R.layout.contact_result_fragment, container, false);
}
@Override
public void onViewCreated(View view, Bundle savedInstanceState) {
mContactResultList = view.findViewById(R.id.contact_result_list);
mContactResultList.setLightMode();
mContactResultList.setAdapter(mAdapter);
mContactResultList.getLayoutManager().setOffsetRows(false);
RecyclerView recyclerView = mContactResultList.getRecyclerView();
for (RecyclerView.OnScrollListener listener : mOnScrollListeners) {
recyclerView.addOnScrollListener(listener);
}
mOnScrollListeners.clear();
}
/**
* Adds a {@link android.support.v7.widget.RecyclerView.OnScrollListener} to be notified when
* the contact list is scrolled.
*
* @see RecyclerView#addOnScrollListener(RecyclerView.OnScrollListener)
*/
public void addOnScrollListener(RecyclerView.OnScrollListener onScrollListener) {
// If the view has not been created yet, then queue the setting of the scroll listener.
if (mContactResultList == null) {
mOnScrollListeners.add(onScrollListener);
return;
}
mContactResultList.getRecyclerView().addOnScrollListener(onScrollListener);
}
/**
* Clears any results from a previous query and displays an empty list.
*/
public void clearResults() {
mSearchQuery = null;
mAdapter.clear();
}
/**
* Sets the search query that should be used to filter contacts.
*/
public void setSearchQuery(String query) {
mSearchQuery = query;
if (!TextUtils.isEmpty(mSearchQuery)) {
// Calling restartLoader so that the loader is always re-created with the new
// search query.
getLoaderManager().restartLoader(0, null /* args */, this /* callback */);
}
}
@Override
public void onLoadFinished(Loader<Cursor> loader, Cursor data) {
if (Log.isLoggable(TAG, Log.DEBUG)) {
Log.d(TAG, "onLoadFinished(); count: " + data.getCount());
}
mAdapter.setData(data);
data.close();
}
@Override
public Loader<Cursor> onCreateLoader(int loaderId, Bundle args) {
if (Log.isLoggable(TAG, Log.DEBUG)) {
Log.d(TAG, "onCreateLoader(); loaderId: " + loaderId + " with query: " + mSearchQuery);
}
return new CursorLoader(getContext(), ContactsContract.Contacts.CONTENT_URI,
CONTACT_DETAILS_PROJECTION, CONTACT_SELECTION,
new String[] { "%" + mSearchQuery + "%" }, null);
}
@Override
public void onLoaderReset(Loader<Cursor> loader) {}
@Override
public void onDestroy() {
// Clear all scroll listeners.
mContactResultList.getRecyclerView().removeOnScrollListener(null);
super.onDestroy();
}
/**
* Creates a new instance of the {@link ContactResultsFragment}.
*
* @param listener A scroll listener that will be notified when the list of search results has
* been scrolled.
* @param initialSearchQuery An optional search query that will be inputted when the fragment
* starts up.
*/
public static ContactResultsFragment newInstance(RecyclerView.OnScrollListener listener,
@Nullable String initialSearchQuery) {
ContactResultsFragment fragment = new ContactResultsFragment();
fragment.addOnScrollListener(listener);
if (!TextUtils.isEmpty(initialSearchQuery)) {
Bundle args = new Bundle();
args.putString(KEY_INITIAL_SEARCH_QUERY, initialSearchQuery);
fragment.setArguments(args);
}
return fragment;
}
}
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