anotherim/src/main/java/eu/siacs/conversations/ui/SearchActivity.java

/*
 * Copyright (c) 2018, Daniel Gultsch All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice, this
 * list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright notice,
 * this list of conditions and the following disclaimer in the documentation and/or
 * other materials provided with the distribution.
 *
 * 3. Neither the name of the copyright holder nor the names of its contributors
 * may be used to endorse or promote products derived from this software without
 * specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

package eu.siacs.conversations.ui;

import android.databinding.DataBindingUtil;
import android.os.Bundle;
import android.support.v7.widget.Toolbar;
import android.text.Editable;
import android.text.TextWatcher;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.EditText;

import java.util.ArrayList;
import java.util.List;

import eu.siacs.conversations.Config;
import eu.siacs.conversations.R;
import eu.siacs.conversations.databinding.ActivitySearchBinding;
import eu.siacs.conversations.entities.Message;
import eu.siacs.conversations.ui.adapter.MessageAdapter;
import eu.siacs.conversations.ui.interfaces.OnSearchResultsAvailable;
import eu.siacs.conversations.ui.util.Color;
import eu.siacs.conversations.ui.util.Drawable;

import static eu.siacs.conversations.ui.util.SoftKeyboardUtils.hideSoftKeyboard;
import static eu.siacs.conversations.ui.util.SoftKeyboardUtils.showKeyboard;

public class SearchActivity extends XmppActivity implements TextWatcher, OnSearchResultsAvailable {

	private ActivitySearchBinding binding;
	private MessageAdapter messageListAdapter;
	private final List<Message> messages = new ArrayList<>();

	@Override
	public void onCreate(final Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		this.binding = DataBindingUtil.setContentView(this, R.layout.activity_search);
		setSupportActionBar((Toolbar) this.binding.toolbar);
		configureActionBar(getSupportActionBar());
		this.messageListAdapter = new MessageAdapter(this, this.messages);
		this.binding.searchResults.setAdapter(messageListAdapter);
	}

	@Override
	public boolean onCreateOptionsMenu(final Menu menu) {
		getMenuInflater().inflate(R.menu.activity_search, menu);
		MenuItem searchActionMenuItem = menu.findItem(R.id.action_search);
		EditText searchField = searchActionMenuItem.getActionView().findViewById(R.id.search_field);
		searchField.addTextChangedListener(this);
		searchField.setHint(R.string.search_messages);
		showKeyboard(searchField);
		return super.onCreateOptionsMenu(menu);
	}

	@Override
	public boolean onOptionsItemSelected(MenuItem item) {
		if (item.getItemId() == android.R.id.home) {
			hideSoftKeyboard(this);
		}
		return super.onOptionsItemSelected(item);
	}

	@Override
	protected void refreshUiReal() {

	}

	@Override
	void onBackendConnected() {

	}

	private void changeBackground(boolean hasSearch, boolean hasResults) {
		if (hasSearch) {
			if (hasResults) {
				binding.searchResults.setBackgroundColor(Color.get(this,R.attr.color_background_secondary));
			} else {
				binding.searchResults.setBackground(Drawable.get(this,R.attr.activity_background_no_results));
			}
		} else {
			binding.searchResults.setBackground(Drawable.get(this,R.attr.activity_background_search));
		}
	}

	@Override
	public void beforeTextChanged(CharSequence s, int start, int count, int after) {

	}

	@Override
	public void onTextChanged(CharSequence s, int start, int before, int count) {

	}

	@Override
	public void afterTextChanged(Editable s) {
		String term = s.toString().trim();
		if (term.length() > 0) {
			xmppConnectionService.search(s.toString().trim(), this);
		} else {
			this.messages.clear();
			messageListAdapter.notifyDataSetChanged();
			changeBackground(false, false);
		}
	}

	@Override
	public void onSearchResultsAvailable(String term, List<Message> messages) {
		this.messages.clear();
		this.messages.addAll(messages);
		runOnUiThread(() -> {
			messageListAdapter.notifyDataSetChanged();
			changeBackground(true, messages.size() > 0);
		});
	}
}