SearchBarActivity.java

/*
 * This program is part of the OpenLMIS logistics management information
 * system platform software.
 *
 * Copyright © 2015 ThoughtWorks, Inc.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published
 * by the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version. This program is distributed in the
 * hope that it will be useful, but WITHOUT ANY WARRANTY; without even the
 * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 * See the GNU Affero General Public License for more details. You should
 * have received a copy of the GNU Affero General Public License along with
 * this program. If not, see http://www.gnu.org/licenses. For additional
 * information contact info@OpenLMIS.org
 */
package org.openlmis.core.view.activity;

import android.support.v7.widget.SearchView;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.View;
import android.widget.LinearLayout;

import org.apache.commons.lang3.StringUtils;
import org.openlmis.core.R;
import org.openlmis.core.utils.DisplayUtil;

public abstract class SearchBarActivity extends BaseActivity {

    protected SearchView searchView;

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        MenuInflater inflater = getMenuInflater();
        inflater.inflate(R.menu.menu_search_bar, menu);

        searchView = (SearchView) menu.findItem(R.id.action_search).getActionView();
        searchView.setQueryHint(getResources().getString(R.string.search_hint));
        searchView.setMaxWidth(DisplayUtil.getScreenWidth());

        changeSearchButtonUI();

        searchView.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
            @Override
            public boolean onQueryTextSubmit(String query) {
                return false;
            }

            @Override
            public boolean onQueryTextChange(String newText) {
                return onSearchStart(newText);
            }
        });

        searchView.setOnCloseListener(new SearchView.OnCloseListener() {
            @Override
            public boolean onClose() {
                return true;
            }
        });

        return super.onCreateOptionsMenu(menu);
    }

    private void changeSearchButtonUI() {
        final View searchButton = searchView.findViewById(R.id.search_button);

        LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(
                LinearLayout.LayoutParams.WRAP_CONTENT,
                LinearLayout.LayoutParams.WRAP_CONTENT
        );
        params.width = (int) getResources().getDimension(R.dimen.search_button_width);
        params.setMargins(0, 0, (int) getResources().getDimension(R.dimen.search_button_right_margin), 0);
        searchButton.setLayoutParams(params);
    }

    protected void clearSearch() {
        if (searchView != null) {
            searchView.setQuery(StringUtils.EMPTY, true);
        }
    }

    @Override
    public void onBackPressed() {
        if (isSearchViewActivity()) {
            searchView.onActionViewCollapsed();
        } else {
            super.onBackPressed();
        }
    }

    protected boolean isSearchViewActivity() {
        return !searchView.isIconified();
    }

    public abstract boolean onSearchStart(String query);

}