src/com/android/settings/search/SearchFragment.java - LeafOS-Project/android_packages_apps_Settings - Gitiles

 /*
  * 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.settings.search;

 import android.app.ActionBar;
 import android.app.Activity;
 import android.app.LoaderManager;
 import android.content.Context;
 import android.content.Loader;
 import android.os.Bundle;
 import android.support.annotation.VisibleForTesting;
 import android.support.v7.widget.LinearLayoutManager;
 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 android.view.inputmethod.InputMethodManager;
 import android.widget.LinearLayout;
 import android.widget.LinearLayout.LayoutParams;
 import android.widget.SearchView;

 import com.android.internal.logging.nano.MetricsProto;
 import com.android.settings.R;
 import com.android.settings.Utils;
 import com.android.settings.core.InstrumentedFragment;
 import com.android.settings.core.instrumentation.MetricsFeatureProvider;
 import com.android.settings.overlay.FeatureFactory;

 import java.util.List;
 import java.util.concurrent.atomic.AtomicInteger;

 /**
  * This fragment manages the lifecycle of indexing and searching.
  *
  * In onCreate, the indexing process is initiated in DatabaseIndexingManager.
  * While the indexing is happening, loaders are blocked from accessing the database, but the user
  * is free to start typing their query.
  *
  * When the indexing is complete, the fragment gets a callback to initialize the loaders and search
  * the query if the user has entered text.
  */
 public class SearchFragment extends InstrumentedFragment implements SearchView.OnQueryTextListener,
         LoaderManager.LoaderCallbacks<List<? extends SearchResult>>, IndexingCallback {
     private static final String TAG = "SearchFragment";

     @VisibleForTesting
     static final int SEARCH_TAG = "SearchViewTag".hashCode();

     // State values
     private static final String STATE_QUERY = "state_query";
     private static final String STATE_SHOWING_SAVED_QUERY = "state_showing_saved_query";
     private static final String STATE_NEVER_ENTERED_QUERY = "state_never_entered_query";
     private static final String STATE_RESULT_CLICK_COUNT = "state_result_click_count";

     // Loader IDs
     @VisibleForTesting
     static final int LOADER_ID_DATABASE = 1;
     @VisibleForTesting
     static final int LOADER_ID_INSTALLED_APPS = 2;

     private static final int NUM_QUERY_LOADERS = 2;

     @VisibleForTesting
     AtomicInteger mUnfinishedLoadersCount = new AtomicInteger(NUM_QUERY_LOADERS);

     // Logging
     @VisibleForTesting
     static final String RESULT_CLICK_COUNT = "settings_search_result_click_count";

     @VisibleForTesting
     String mQuery;

     private boolean mNeverEnteredQuery = true;
     @VisibleForTesting
     boolean mShowingSavedQuery;
     private int mResultClickCount;
     private MetricsFeatureProvider mMetricsFeatureProvider;
     @VisibleForTesting
     SavedQueryController mSavedQueryController;

     @VisibleForTesting(otherwise = VisibleForTesting.PRIVATE)
     SearchFeatureProvider mSearchFeatureProvider;

     private SearchResultsAdapter mSearchAdapter;

     @VisibleForTesting(otherwise = VisibleForTesting.PRIVATE)
     RecyclerView mResultsRecyclerView;
     @VisibleForTesting
     SearchView mSearchView;
     private LinearLayout mNoResultsView;

     @VisibleForTesting
     final RecyclerView.OnScrollListener mScrollListener = new RecyclerView.OnScrollListener() {
         @Override
         public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
             if (dy != 0) {
                 hideKeyboard();
             }
         }
     };

     @Override
     public int getMetricsCategory() {
         return MetricsProto.MetricsEvent.DASHBOARD_SEARCH_RESULTS;
     }

     @Override
     public void onAttach(Context context) {
         super.onAttach(context);
         mSearchFeatureProvider = FeatureFactory.getFactory(context).getSearchFeatureProvider();
         mMetricsFeatureProvider = FeatureFactory.getFactory(context).getMetricsFeatureProvider();
     }

     @Override
     public void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setHasOptionsMenu(true);

         final LoaderManager loaderManager = getLoaderManager();
         mSearchAdapter = new SearchResultsAdapter(this, mSearchFeatureProvider);
         mSavedQueryController = new SavedQueryController(
                 getContext(), loaderManager, mSearchAdapter);
         mSearchFeatureProvider.initFeedbackButton();

         if (savedInstanceState != null) {
             mQuery = savedInstanceState.getString(STATE_QUERY);
             mNeverEnteredQuery = savedInstanceState.getBoolean(STATE_NEVER_ENTERED_QUERY);
             mResultClickCount = savedInstanceState.getInt(STATE_RESULT_CLICK_COUNT);
             mShowingSavedQuery = savedInstanceState.getBoolean(STATE_SHOWING_SAVED_QUERY);
         } else {
             mShowingSavedQuery = true;
         }

         final Activity activity = getActivity();
         final ActionBar actionBar = activity.getActionBar();
         mSearchView = makeSearchView(actionBar, mQuery);
         actionBar.setCustomView(mSearchView);
         actionBar.setDisplayShowCustomEnabled(true);
         actionBar.setDisplayShowTitleEnabled(false);
         mSearchView.requestFocus();

         // Run the Index update only if we have some space
         if (!Utils.isLowStorage(activity)) {
             mSearchFeatureProvider.updateIndex(activity, this /* indexingCallback */);
         } else {
             Log.w(TAG, "Cannot update the Indexer as we are running low on storage space!");
         }
     }

     @Override
     public View onCreateView(LayoutInflater inflater, ViewGroup container,
             Bundle savedInstanceState) {
         final View view = inflater.inflate(R.layout.search_panel, container, false);
         mResultsRecyclerView = view.findViewById(R.id.list_results);
         mResultsRecyclerView.setAdapter(mSearchAdapter);
         mResultsRecyclerView.setLayoutManager(new LinearLayoutManager(getActivity()));
         mResultsRecyclerView.addOnScrollListener(mScrollListener);

         mNoResultsView = view.findViewById(R.id.no_results_layout);
         return view;
     }

     @Override
     public void onResume() {
         super.onResume();
         requery();
     }

     @Override
     public void onStop() {
         super.onStop();
         final Activity activity = getActivity();
         if (activity != null && activity.isFinishing()) {
             mMetricsFeatureProvider.histogram(activity, RESULT_CLICK_COUNT, mResultClickCount);
             if (mNeverEnteredQuery) {
                 mMetricsFeatureProvider.action(activity,
                         MetricsProto.MetricsEvent.ACTION_LEAVE_SEARCH_RESULT_WITHOUT_QUERY);
             }
         }
     }

     @Override
     public void onSaveInstanceState(Bundle outState) {
         super.onSaveInstanceState(outState);
         outState.putString(STATE_QUERY, mQuery);
         outState.putBoolean(STATE_NEVER_ENTERED_QUERY, mNeverEnteredQuery);
         outState.putBoolean(STATE_SHOWING_SAVED_QUERY, mShowingSavedQuery);
         outState.putInt(STATE_RESULT_CLICK_COUNT, mResultClickCount);
     }

     @Override
     public boolean onQueryTextChange(String query) {
         if (TextUtils.equals(query, mQuery)) {
             return true;
         }

         final boolean isEmptyQuery = TextUtils.isEmpty(query);

         // Hide no-results-view when the new query is not a super-string of the previous
         if ((mQuery != null) && (mNoResultsView.getVisibility() == View.VISIBLE)
                 && (query.length() < mQuery.length())) {
             mNoResultsView.setVisibility(View.GONE);
         }

         mResultClickCount = 0;
         mNeverEnteredQuery = false;
         mQuery = query;

         // If indexing is not finished, register the query text, but don't search.
         if (!mSearchFeatureProvider.isIndexingComplete(getActivity())) {
             return true;
         }

         if (isEmptyQuery) {
             final LoaderManager loaderManager = getLoaderManager();
             loaderManager.destroyLoader(LOADER_ID_DATABASE);
             loaderManager.destroyLoader(LOADER_ID_INSTALLED_APPS);
             mShowingSavedQuery = true;
             mSavedQueryController.loadSavedQueries();
             mSearchFeatureProvider.hideFeedbackButton();
         } else {
             restartLoaders();
         }

         return true;
     }

     @Override
     public boolean onQueryTextSubmit(String query) {
         // Save submitted query.
         mSavedQueryController.saveQuery(mQuery);
         hideKeyboard();
         return true;
     }

     @Override
     public Loader<List<? extends SearchResult>> onCreateLoader(int id, Bundle args) {
         final Activity activity = getActivity();

         switch (id) {
             case LOADER_ID_DATABASE:
                 return mSearchFeatureProvider.getDatabaseSearchLoader(activity, mQuery);
             case LOADER_ID_INSTALLED_APPS:
                 return mSearchFeatureProvider.getInstalledAppSearchLoader(activity, mQuery);
             default:
                 return null;
         }
     }

     @Override
     public void onLoadFinished(Loader<List<? extends SearchResult>> loader,
             List<? extends SearchResult> data) {
         mSearchAdapter.addSearchResults(data, loader.getClass().getName());
         if (mUnfinishedLoadersCount.decrementAndGet() != 0) {
             return;
         }

         final int resultCount = mSearchAdapter.displaySearchResults(mQuery);

         if (resultCount == 0) {
             mNoResultsView.setVisibility(View.VISIBLE);
         } else {
             mNoResultsView.setVisibility(View.GONE);
             mResultsRecyclerView.scrollToPosition(0);
         }
         mSearchFeatureProvider.showFeedbackButton(this, getView());
     }

     @Override
     public void onLoaderReset(Loader<List<? extends SearchResult>> loader) {
     }

     /**
      * Gets called when Indexing is completed.
      */
     @Override
     public void onIndexingFinished() {
         if (getActivity() == null) {
             return;
         }
         if (mShowingSavedQuery) {
             mSavedQueryController.loadSavedQueries();
         } else {
             final LoaderManager loaderManager = getLoaderManager();
             loaderManager.initLoader(LOADER_ID_DATABASE, null, this);
             loaderManager.initLoader(LOADER_ID_INSTALLED_APPS, null, this);
         }

         requery();
     }

     public void onSearchResultClicked() {
         mSavedQueryController.saveQuery(mQuery);
         mResultClickCount++;
     }

     public void onSavedQueryClicked(CharSequence query) {
         final String queryString = query.toString();
         mMetricsFeatureProvider.action(getContext(),
                 MetricsProto.MetricsEvent.ACTION_CLICK_SETTINGS_SEARCH_SAVED_QUERY);
         mSearchView.setQuery(queryString, false /* submit */);
         onQueryTextChange(queryString);
     }

     public void onRemoveSavedQueryClicked(CharSequence title) {
         mSavedQueryController.removeQuery(title.toString());
     }

     private void restartLoaders() {
         mShowingSavedQuery = false;
         final LoaderManager loaderManager = getLoaderManager();
         mUnfinishedLoadersCount.set(NUM_QUERY_LOADERS);
         loaderManager.restartLoader(LOADER_ID_DATABASE, null /* args */, this /* callback */);
         loaderManager.restartLoader(LOADER_ID_INSTALLED_APPS, null /* args */, this /* callback */);
     }

     public String getQuery() {
         return mQuery;
     }

     public List<SearchResult> getSearchResults() {
         return mSearchAdapter.getSearchResults();
     }

     private void requery() {
         if (TextUtils.isEmpty(mQuery)) {
             return;
         }
         final String query = mQuery;
         mQuery = "";
         onQueryTextChange(query);
     }

     @VisibleForTesting(otherwise = VisibleForTesting.PRIVATE)
     SearchView makeSearchView(ActionBar actionBar, String query) {
         final SearchView searchView = new SearchView(actionBar.getThemedContext());
         searchView.setIconifiedByDefault(false);
         searchView.setQuery(query, false /* submitQuery */);
         searchView.setOnQueryTextListener(this);
         searchView.setTag(SEARCH_TAG, searchView);
         final LayoutParams lp =
                 new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT);
         searchView.setLayoutParams(lp);
         return searchView;
     }

     private void hideKeyboard() {
         final Activity activity = getActivity();
         if (activity != null) {
             View view = activity.getCurrentFocus();
             InputMethodManager imm = (InputMethodManager)
                     activity.getSystemService(Context.INPUT_METHOD_SERVICE);
             imm.hideSoftInputFromWindow(view.getWindowToken(), 0);
         }

         if (mResultsRecyclerView != null) {
             mResultsRecyclerView.requestFocus();
         }
     }
 }
	/*
	* 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.settings.search;

	import android.app.ActionBar;
	import android.app.Activity;
	import android.app.LoaderManager;
	import android.content.Context;
	import android.content.Loader;
	import android.os.Bundle;
	import android.support.annotation.VisibleForTesting;
	import android.support.v7.widget.LinearLayoutManager;
	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 android.view.inputmethod.InputMethodManager;
	import android.widget.LinearLayout;
	import android.widget.LinearLayout.LayoutParams;
	import android.widget.SearchView;

	import com.android.internal.logging.nano.MetricsProto;
	import com.android.settings.R;
	import com.android.settings.Utils;
	import com.android.settings.core.InstrumentedFragment;
	import com.android.settings.core.instrumentation.MetricsFeatureProvider;
	import com.android.settings.overlay.FeatureFactory;

	import java.util.List;
	import java.util.concurrent.atomic.AtomicInteger;

	/**
	* This fragment manages the lifecycle of indexing and searching.
	*
	* In onCreate, the indexing process is initiated in DatabaseIndexingManager.
	* While the indexing is happening, loaders are blocked from accessing the database, but the user
	* is free to start typing their query.
	*
	* When the indexing is complete, the fragment gets a callback to initialize the loaders and search
	* the query if the user has entered text.
	*/
	public class SearchFragment extends InstrumentedFragment implements SearchView.OnQueryTextListener,
	LoaderManager.LoaderCallbacks<List<? extends SearchResult>>, IndexingCallback {
	private static final String TAG = "SearchFragment";

	@VisibleForTesting
	static final int SEARCH_TAG = "SearchViewTag".hashCode();

	// State values
	private static final String STATE_QUERY = "state_query";
	private static final String STATE_SHOWING_SAVED_QUERY = "state_showing_saved_query";
	private static final String STATE_NEVER_ENTERED_QUERY = "state_never_entered_query";
	private static final String STATE_RESULT_CLICK_COUNT = "state_result_click_count";

	// Loader IDs
	@VisibleForTesting
	static final int LOADER_ID_DATABASE = 1;
	@VisibleForTesting
	static final int LOADER_ID_INSTALLED_APPS = 2;

	private static final int NUM_QUERY_LOADERS = 2;

	@VisibleForTesting
	AtomicInteger mUnfinishedLoadersCount = new AtomicInteger(NUM_QUERY_LOADERS);

	// Logging
	@VisibleForTesting
	static final String RESULT_CLICK_COUNT = "settings_search_result_click_count";

	@VisibleForTesting
	String mQuery;

	private boolean mNeverEnteredQuery = true;
	@VisibleForTesting
	boolean mShowingSavedQuery;
	private int mResultClickCount;
	private MetricsFeatureProvider mMetricsFeatureProvider;
	@VisibleForTesting
	SavedQueryController mSavedQueryController;

	@VisibleForTesting(otherwise = VisibleForTesting.PRIVATE)
	SearchFeatureProvider mSearchFeatureProvider;

	private SearchResultsAdapter mSearchAdapter;

	@VisibleForTesting(otherwise = VisibleForTesting.PRIVATE)
	RecyclerView mResultsRecyclerView;
	@VisibleForTesting
	SearchView mSearchView;
	private LinearLayout mNoResultsView;

	@VisibleForTesting
	final RecyclerView.OnScrollListener mScrollListener = new RecyclerView.OnScrollListener() {
	@Override
	public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
	if (dy != 0) {
	hideKeyboard();
	}
	}
	};

	@Override
	public int getMetricsCategory() {
	return MetricsProto.MetricsEvent.DASHBOARD_SEARCH_RESULTS;
	}

	@Override
	public void onAttach(Context context) {
	super.onAttach(context);
	mSearchFeatureProvider = FeatureFactory.getFactory(context).getSearchFeatureProvider();
	mMetricsFeatureProvider = FeatureFactory.getFactory(context).getMetricsFeatureProvider();
	}

	@Override
	public void onCreate(Bundle savedInstanceState) {
	super.onCreate(savedInstanceState);
	setHasOptionsMenu(true);

	final LoaderManager loaderManager = getLoaderManager();
	mSearchAdapter = new SearchResultsAdapter(this, mSearchFeatureProvider);
	mSavedQueryController = new SavedQueryController(
	getContext(), loaderManager, mSearchAdapter);
	mSearchFeatureProvider.initFeedbackButton();

	if (savedInstanceState != null) {
	mQuery = savedInstanceState.getString(STATE_QUERY);
	mNeverEnteredQuery = savedInstanceState.getBoolean(STATE_NEVER_ENTERED_QUERY);
	mResultClickCount = savedInstanceState.getInt(STATE_RESULT_CLICK_COUNT);
	mShowingSavedQuery = savedInstanceState.getBoolean(STATE_SHOWING_SAVED_QUERY);
	} else {
	mShowingSavedQuery = true;
	}

	final Activity activity = getActivity();
	final ActionBar actionBar = activity.getActionBar();
	mSearchView = makeSearchView(actionBar, mQuery);
	actionBar.setCustomView(mSearchView);
	actionBar.setDisplayShowCustomEnabled(true);
	actionBar.setDisplayShowTitleEnabled(false);
	mSearchView.requestFocus();

	// Run the Index update only if we have some space
	if (!Utils.isLowStorage(activity)) {
	mSearchFeatureProvider.updateIndex(activity, this /* indexingCallback */);
	} else {
	Log.w(TAG, "Cannot update the Indexer as we are running low on storage space!");
	}
	}

	@Override
	public View onCreateView(LayoutInflater inflater, ViewGroup container,
	Bundle savedInstanceState) {
	final View view = inflater.inflate(R.layout.search_panel, container, false);
	mResultsRecyclerView = view.findViewById(R.id.list_results);
	mResultsRecyclerView.setAdapter(mSearchAdapter);
	mResultsRecyclerView.setLayoutManager(new LinearLayoutManager(getActivity()));
	mResultsRecyclerView.addOnScrollListener(mScrollListener);

	mNoResultsView = view.findViewById(R.id.no_results_layout);
	return view;
	}

	@Override
	public void onResume() {
	super.onResume();
	requery();
	}

	@Override
	public void onStop() {
	super.onStop();
	final Activity activity = getActivity();
	if (activity != null && activity.isFinishing()) {
	mMetricsFeatureProvider.histogram(activity, RESULT_CLICK_COUNT, mResultClickCount);
	if (mNeverEnteredQuery) {
	mMetricsFeatureProvider.action(activity,
	MetricsProto.MetricsEvent.ACTION_LEAVE_SEARCH_RESULT_WITHOUT_QUERY);
	}
	}
	}

	@Override
	public void onSaveInstanceState(Bundle outState) {
	super.onSaveInstanceState(outState);
	outState.putString(STATE_QUERY, mQuery);
	outState.putBoolean(STATE_NEVER_ENTERED_QUERY, mNeverEnteredQuery);
	outState.putBoolean(STATE_SHOWING_SAVED_QUERY, mShowingSavedQuery);
	outState.putInt(STATE_RESULT_CLICK_COUNT, mResultClickCount);
	}

	@Override
	public boolean onQueryTextChange(String query) {
	if (TextUtils.equals(query, mQuery)) {
	return true;
	}

	final boolean isEmptyQuery = TextUtils.isEmpty(query);

	// Hide no-results-view when the new query is not a super-string of the previous
	if ((mQuery != null) && (mNoResultsView.getVisibility() == View.VISIBLE)
	&& (query.length() < mQuery.length())) {
	mNoResultsView.setVisibility(View.GONE);
	}

	mResultClickCount = 0;
	mNeverEnteredQuery = false;
	mQuery = query;

	// If indexing is not finished, register the query text, but don't search.
	if (!mSearchFeatureProvider.isIndexingComplete(getActivity())) {
	return true;
	}

	if (isEmptyQuery) {
	final LoaderManager loaderManager = getLoaderManager();
	loaderManager.destroyLoader(LOADER_ID_DATABASE);
	loaderManager.destroyLoader(LOADER_ID_INSTALLED_APPS);
	mShowingSavedQuery = true;
	mSavedQueryController.loadSavedQueries();
	mSearchFeatureProvider.hideFeedbackButton();
	} else {
	restartLoaders();
	}

	return true;
	}

	@Override
	public boolean onQueryTextSubmit(String query) {
	// Save submitted query.
	mSavedQueryController.saveQuery(mQuery);
	hideKeyboard();
	return true;
	}

	@Override
	public Loader<List<? extends SearchResult>> onCreateLoader(int id, Bundle args) {
	final Activity activity = getActivity();

	switch (id) {
	case LOADER_ID_DATABASE:
	return mSearchFeatureProvider.getDatabaseSearchLoader(activity, mQuery);
	case LOADER_ID_INSTALLED_APPS:
	return mSearchFeatureProvider.getInstalledAppSearchLoader(activity, mQuery);
	default:
	return null;
	}
	}

	@Override
	public void onLoadFinished(Loader<List<? extends SearchResult>> loader,
	List<? extends SearchResult> data) {
	mSearchAdapter.addSearchResults(data, loader.getClass().getName());
	if (mUnfinishedLoadersCount.decrementAndGet() != 0) {
	return;
	}

	final int resultCount = mSearchAdapter.displaySearchResults(mQuery);

	if (resultCount == 0) {
	mNoResultsView.setVisibility(View.VISIBLE);
	} else {
	mNoResultsView.setVisibility(View.GONE);
	mResultsRecyclerView.scrollToPosition(0);
	}
	mSearchFeatureProvider.showFeedbackButton(this, getView());
	}

	@Override
	public void onLoaderReset(Loader<List<? extends SearchResult>> loader) {
	}

	/**
	* Gets called when Indexing is completed.
	*/
	@Override
	public void onIndexingFinished() {
	if (getActivity() == null) {
	return;
	}
	if (mShowingSavedQuery) {
	mSavedQueryController.loadSavedQueries();
	} else {
	final LoaderManager loaderManager = getLoaderManager();
	loaderManager.initLoader(LOADER_ID_DATABASE, null, this);
	loaderManager.initLoader(LOADER_ID_INSTALLED_APPS, null, this);
	}

	requery();
	}

	public void onSearchResultClicked() {
	mSavedQueryController.saveQuery(mQuery);
	mResultClickCount++;
	}

	public void onSavedQueryClicked(CharSequence query) {
	final String queryString = query.toString();
	mMetricsFeatureProvider.action(getContext(),
	MetricsProto.MetricsEvent.ACTION_CLICK_SETTINGS_SEARCH_SAVED_QUERY);
	mSearchView.setQuery(queryString, false /* submit */);
	onQueryTextChange(queryString);
	}

	public void onRemoveSavedQueryClicked(CharSequence title) {
	mSavedQueryController.removeQuery(title.toString());
	}

	private void restartLoaders() {
	mShowingSavedQuery = false;
	final LoaderManager loaderManager = getLoaderManager();
	mUnfinishedLoadersCount.set(NUM_QUERY_LOADERS);
	loaderManager.restartLoader(LOADER_ID_DATABASE, null /* args /, this / callback */);
	loaderManager.restartLoader(LOADER_ID_INSTALLED_APPS, null /* args /, this / callback */);
	}

	public String getQuery() {
	return mQuery;
	}

	public List<SearchResult> getSearchResults() {
	return mSearchAdapter.getSearchResults();
	}

	private void requery() {
	if (TextUtils.isEmpty(mQuery)) {
	return;
	}
	final String query = mQuery;
	mQuery = "";
	onQueryTextChange(query);
	}

	@VisibleForTesting(otherwise = VisibleForTesting.PRIVATE)
	SearchView makeSearchView(ActionBar actionBar, String query) {
	final SearchView searchView = new SearchView(actionBar.getThemedContext());
	searchView.setIconifiedByDefault(false);
	searchView.setQuery(query, false /* submitQuery */);
	searchView.setOnQueryTextListener(this);
	searchView.setTag(SEARCH_TAG, searchView);
	final LayoutParams lp =
	new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT);
	searchView.setLayoutParams(lp);
	return searchView;
	}

	private void hideKeyboard() {
	final Activity activity = getActivity();
	if (activity != null) {
	View view = activity.getCurrentFocus();
	InputMethodManager imm = (InputMethodManager)
	activity.getSystemService(Context.INPUT_METHOD_SERVICE);
	imm.hideSoftInputFromWindow(view.getWindowToken(), 0);
	}

	if (mResultsRecyclerView != null) {
	mResultsRecyclerView.requestFocus();
	}
	}
	}