src/com/android/deskclock/actionbarmenu/SearchMenuItemController.java

/*
 * Copyright (C) 2016 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.deskclock.actionbarmenu;

import android.content.Context;
import android.os.Bundle;
import android.support.v7.widget.SearchView;
import android.support.v7.widget.SearchView.OnQueryTextListener;
import android.text.InputType;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.inputmethod.EditorInfo;

import com.android.deskclock.R;

import static android.view.Menu.FIRST;
import static android.view.Menu.NONE;

/**
 * {@link MenuItemController} for search menu.
 */
public final class SearchMenuItemController implements MenuItemController {

    private static final String KEY_SEARCH_QUERY = "search_query";
    private static final String KEY_SEARCH_MODE = "search_mode";

    private static final int SEARCH_MENU_RES_ID = R.id.menu_item_search;

    private final Context mContext;
    private final SearchView.OnQueryTextListener mQueryListener;
    private final SearchModeChangeListener mSearchModeChangeListener;

    private String mQuery = "";
    private boolean mSearchMode;

    public SearchMenuItemController(Context context, OnQueryTextListener queryListener,
            Bundle savedState) {
        mContext = context;
        mSearchModeChangeListener = new SearchModeChangeListener();
        mQueryListener = queryListener;

        if (savedState != null) {
            mSearchMode = savedState.getBoolean(KEY_SEARCH_MODE, false);
            mQuery = savedState.getString(KEY_SEARCH_QUERY, "");
        }
    }

    public void saveInstance(Bundle outState) {
        outState.putString(KEY_SEARCH_QUERY, mQuery);
        outState.putBoolean(KEY_SEARCH_MODE, mSearchMode);
    }

    @Override
    public int getId() {
        return SEARCH_MENU_RES_ID;
    }

    @Override
    public void onCreateOptionsItem(Menu menu) {
        final SearchView searchView = new SearchView(mContext);
        searchView.setImeOptions(EditorInfo.IME_FLAG_NO_EXTRACT_UI);
        searchView.setInputType(InputType.TYPE_CLASS_TEXT | InputType.TYPE_TEXT_FLAG_CAP_WORDS);
        searchView.setQuery(mQuery, false);
        searchView.setOnCloseListener(mSearchModeChangeListener);
        searchView.setOnSearchClickListener(mSearchModeChangeListener);
        searchView.setOnQueryTextListener(mQueryListener);

        menu.add(NONE, SEARCH_MENU_RES_ID, FIRST, android.R.string.search_go)
                .setActionView(searchView)
                .setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM);

        if (mSearchMode) {
            searchView.requestFocus();
            searchView.setIconified(false);
        }
    }

    @Override
    public void onPrepareOptionsItem(MenuItem item) {
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // The search view is handled by {@link #mSearchListener}. Skip handling here.
        return false;
    }

    public String getQueryText() {
        return mQuery;
    }

    public void setQueryText(String query) {
        mQuery = query;
    }

    /**
     * Listener for user actions on search view.
     */
    private final class SearchModeChangeListener implements View.OnClickListener,
            SearchView.OnCloseListener {
        @Override
        public void onClick(View v) {
            mSearchMode = true;
        }

        @Override
        public boolean onClose() {
            mSearchMode = false;
            return false;
        }
    }
}