Java tutorial
/* * Copyright (C) 2017 Team Gateship-One * (Hendrik Borghorst & Frederik Luetkes) * * The AUTHORS.md file contains a detailed contributors list: * <https://github.com/gateship-one/malp/blob/master/AUTHORS.md> * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU 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 General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. * */ package org.gateshipone.malp.application.fragments.serverfragments; import android.app.Activity; import android.content.Context; import android.os.Bundle; import android.support.v4.app.Fragment; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.Button; import android.widget.TextView; import org.gateshipone.malp.R; import org.gateshipone.malp.application.callbacks.FABFragmentCallback; import org.gateshipone.malp.application.utils.FormatHelper; import org.gateshipone.malp.mpdservice.handlers.MPDStatusChangeHandler; import org.gateshipone.malp.mpdservice.handlers.responsehandler.MPDResponseServerStatistics; import org.gateshipone.malp.mpdservice.handlers.serverhandler.MPDQueryHandler; import org.gateshipone.malp.mpdservice.handlers.serverhandler.MPDStateMonitoringHandler; import org.gateshipone.malp.mpdservice.mpdprotocol.MPDCapabilities; import org.gateshipone.malp.mpdservice.mpdprotocol.mpdobjects.MPDCurrentStatus; import org.gateshipone.malp.mpdservice.mpdprotocol.mpdobjects.MPDStatistics; import org.gateshipone.malp.mpdservice.mpdprotocol.mpdobjects.MPDTrack; import java.lang.ref.WeakReference; public class ServerStatisticFragment extends Fragment { public final static String TAG = ServerStatisticFragment.class.getSimpleName(); private TextView mArtistCount; private TextView mAlbumsCount; private TextView mSongsCount; private TextView mUptime; private TextView mPlaytime; private TextView mLastUpdate; private TextView mDBLength; private TextView mDBUpdating; private TextView mServerFeatures; private ServerStatusHandler mServerStatusHandler; @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { // Inflate the layout for this fragment View rootView = inflater.inflate(R.layout.fragment_server_statistic, container, false); mArtistCount = (TextView) rootView.findViewById(R.id.server_statistic_artist_count); mAlbumsCount = (TextView) rootView.findViewById(R.id.server_statistic_albums_count); mSongsCount = (TextView) rootView.findViewById(R.id.server_statistic_songs_count); mUptime = (TextView) rootView.findViewById(R.id.server_statistic_server_uptime); mPlaytime = (TextView) rootView.findViewById(R.id.server_statistic_server_playtime); mLastUpdate = (TextView) rootView.findViewById(R.id.server_statistic_db_update); mDBLength = (TextView) rootView.findViewById(R.id.server_statistic_db_playtime); mDBUpdating = (TextView) rootView.findViewById(R.id.server_statistic_updateing_db); mServerFeatures = (TextView) rootView.findViewById(R.id.server_statistic_malp_server_information); ((Button) rootView.findViewById(R.id.server_statistic_update_db_btn)) .setOnClickListener(new DBUpdateBtnListener()); mServerStatusHandler = new ServerStatusHandler(this); // Return the ready inflated and configured fragment view. return rootView; } /** * Attaches callbacks */ @Override public void onResume() { super.onResume(); MPDQueryHandler.getStatistics(new StatisticResponseHandler()); MPDStateMonitoringHandler.registerStatusListener(mServerStatusHandler); } @Override public synchronized void onPause() { super.onPause(); MPDStateMonitoringHandler.unregisterStatusListener(mServerStatusHandler); } private synchronized void showDatabaseUpdating(final boolean show) { Activity activity = getActivity(); if (null == activity) { return; } activity.runOnUiThread(new Runnable() { @Override public void run() { if (show) { mDBUpdating.setVisibility(View.VISIBLE); } else { mDBUpdating.setVisibility(View.GONE); } } }); } private class StatisticResponseHandler extends MPDResponseServerStatistics { @Override public void handleStatistic(MPDStatistics statistics) { mArtistCount.setText(String.valueOf(statistics.getArtistsCount())); mAlbumsCount.setText(String.valueOf(statistics.getAlbumCount())); mSongsCount.setText(String.valueOf(statistics.getSongCount())); mUptime.setText(FormatHelper.formatTracktimeFromS(statistics.getServerUptime())); mPlaytime.setText(FormatHelper.formatTracktimeFromS(statistics.getPlayDuration())); mDBLength.setText(FormatHelper.formatTracktimeFromS(statistics.getAllSongDuration())); mLastUpdate.setText(FormatHelper.formatTimeStampToString(statistics.getLastDBUpdate() * 1000)); MPDCapabilities capabilities = MPDQueryHandler.getServerCapabilities(); if (null != capabilities) { mServerFeatures.setText(MPDQueryHandler.getServerCapabilities().getServerFeatures()); } } } private class DBUpdateBtnListener implements View.OnClickListener { @Override public void onClick(View v) { MPDQueryHandler.updateDatabase(); } } private static class ServerStatusHandler extends MPDStatusChangeHandler { WeakReference<ServerStatisticFragment> mFragment; public ServerStatusHandler(ServerStatisticFragment fragment) { mFragment = new WeakReference<ServerStatisticFragment>(fragment); } @Override protected void onNewStatusReady(MPDCurrentStatus status) { mFragment.get().showDatabaseUpdating(status.getUpdateDBJob() >= 0); } @Override protected void onNewTrackReady(MPDTrack track) { } } }