project_files/Android-build/SDL-android-project/src/org/hedgewars/hedgeroid/NetplayStateFragment.java
author Wuzzy <almikes@aol.com>
Thu, 12 May 2016 16:20:17 +0200
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/*
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 * Hedgewars for Android. An Android port of Hedgewars, a free turn based strategy game
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 * Copyright (C) 2012 Simeon Maxein <smaxein@googlemail.com>
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 *
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 * This program is free software; you can redistribute it and/or
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 * modify it under the terms of the GNU General Public License
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 * as published by the Free Software Foundation; either version 2
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 * of the License, or (at your option) any later version.
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 *
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 * This program is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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 * GNU General Public License for more details.
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 *
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 * You should have received a copy of the GNU General Public License
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 * along with this program; if not, write to the Free Software
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 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
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 */
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package org.hedgewars.hedgeroid;
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import org.hedgewars.hedgeroid.R;
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import org.hedgewars.hedgeroid.frontlib.Frontlib;
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import org.hedgewars.hedgeroid.netplay.Netplay;
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import org.hedgewars.hedgeroid.netplay.Netplay.State;
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import android.app.Activity;
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import android.content.BroadcastReceiver;
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import android.content.Context;
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import android.content.Intent;
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import android.content.IntentFilter;
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import android.os.Bundle;
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import android.support.v4.app.Fragment;
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import android.support.v4.content.LocalBroadcastManager;
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import android.widget.Toast;
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/**
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 * Fragment for use by an activity that depends on the state of the network
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 * connection. The activity must implement the NetplayStateListener interface.
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 *
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 * This fragment manages reacting to changes in the networking state by calling
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 * a callback method on the activity.
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 */
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public class NetplayStateFragment extends Fragment {
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    private Netplay netplay;
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    private Context appContext;
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    private LocalBroadcastManager broadcastManager;
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    private NetplayStateListener listener;
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    private State knownState;
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    interface NetplayStateListener {
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        /**
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         * This is called while the activity is running, and every time during resume, if
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         * a change in the networking state is detected. It is also called once
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         * with the initial state (which could be called a change from the "unknown" state).
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         */
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        void onNetplayStateChanged(State newState);
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    }
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    @Override
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    public void onAttach(Activity activity) {
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        super.onAttach(activity);
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        try {
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            listener = (NetplayStateListener) activity;
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        } catch(ClassCastException e) {
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            throw new ClassCastException("Activity " + activity + " must implement NetplayStateListener to use NetplayStateFragment.");
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        }
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    }
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    @Override
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    public void onDetach() {
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        super.onDetach();
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        listener = null;
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    }
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    @Override
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    public void onCreate(Bundle icicle) {
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        super.onCreate(icicle);
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        appContext = getActivity().getApplicationContext();
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        broadcastManager = LocalBroadcastManager.getInstance(appContext);
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        netplay = Netplay.getAppInstance(appContext);
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    }
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    @Override
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    public void onResume() {
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        super.onResume();
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        broadcastManager.registerReceiver(disconnectReceiver, new IntentFilter(Netplay.ACTION_DISCONNECTED));
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        broadcastManager.registerReceiver(leaveRoomReceiver, new IntentFilter(Netplay.ACTION_LEFT_ROOM));
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        broadcastManager.registerReceiver(stateChangeReceiver, new IntentFilter(Netplay.ACTION_STATE_CHANGED));
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        State newState = netplay.getState();
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        if(knownState != newState) {
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            listener.onNetplayStateChanged(newState);
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            knownState = newState;
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        }
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    }
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    @Override
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    public void onPause() {
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        super.onPause();
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        broadcastManager.unregisterReceiver(disconnectReceiver);
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        broadcastManager.unregisterReceiver(leaveRoomReceiver);
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        broadcastManager.unregisterReceiver(stateChangeReceiver);
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    }
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    private final BroadcastReceiver disconnectReceiver = new BroadcastReceiver() {
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        @Override
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        public void onReceive(Context context, Intent intent) {
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            if(intent.getBooleanExtra(Netplay.EXTRA_HAS_ERROR, true)) {
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                String message = intent.getStringExtra(Netplay.EXTRA_MESSAGE);
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                String toastText = getString(R.string.toast_disconnected, message);
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                Toast.makeText(appContext, toastText, Toast.LENGTH_LONG).show();
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            }
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        }
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    };
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    private final BroadcastReceiver leaveRoomReceiver = new BroadcastReceiver() {
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        @Override
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        public void onReceive(Context context, Intent intent) {
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            int reason = intent.getIntExtra(Netplay.EXTRA_REASON, -1);
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            if(reason == Frontlib.NETCONN_ROOMLEAVE_ABANDONED) {
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                Toast.makeText(appContext, R.string.toast_room_abandoned, Toast.LENGTH_LONG).show();
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            } else if(reason == Frontlib.NETCONN_ROOMLEAVE_KICKED) {
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                Toast.makeText(appContext, R.string.toast_kicked, Toast.LENGTH_LONG).show();
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            }
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        }
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    };
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    private final BroadcastReceiver stateChangeReceiver = new BroadcastReceiver() {
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        @Override
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        public void onReceive(Context context, Intent intent) {
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            State newState = netplay.getState();
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            listener.onNetplayStateChanged(newState);
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            knownState = newState;
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        }
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    };
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}