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/*
* Copyright © 2018 Samuel Holland <samuel@sholland.org>
* Copyright © 2018 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
* SPDX-License-Identifier: Apache-2.0
*/
package com.wireguard.android;
import android.annotation.TargetApi;
import android.content.Intent;
import android.databinding.Observable;
import android.databinding.Observable.OnPropertyChangedCallback;
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.drawable.Icon;
import android.os.Build;
import android.service.quicksettings.Tile;
import android.service.quicksettings.TileService;
import android.support.annotation.Nullable;
import android.util.Log;
import android.widget.Toast;
import com.wireguard.android.activity.MainActivity;
import com.wireguard.android.model.Tunnel;
import com.wireguard.android.model.Tunnel.State;
import com.wireguard.android.util.ExceptionLoggers;
import com.wireguard.android.widget.SlashDrawable;
import java.util.Objects;
/**
* Service that maintains the application's custom Quick Settings tile. This service is bound by the
* system framework as necessary to update the appearance of the tile in the system UI, and to
* forward click events to the application.
*/
@TargetApi(Build.VERSION_CODES.N)
public class QuickTileService extends TileService {
private static final String TAG = "WireGuard/" + QuickTileService.class.getSimpleName();
private final OnStateChangedCallback onStateChangedCallback = new OnStateChangedCallback();
private final OnTunnelChangedCallback onTunnelChangedCallback = new OnTunnelChangedCallback();
@Nullable private Tunnel tunnel;
@Nullable private Icon iconOn;
@Nullable private Icon iconOff;
@SuppressWarnings("deprecation")
@Override
public void onCreate() {
final SlashDrawable icon = new SlashDrawable(getResources().getDrawable(R.drawable.ic_tile));
icon.setAnimationEnabled(false); /* Unfortunately we can't have animations, since Icons are marshaled. */
icon.setSlashed(false);
Bitmap b = Bitmap.createBitmap(icon.getIntrinsicWidth(), icon.getIntrinsicHeight(), Bitmap.Config.ARGB_8888);
Canvas c = new Canvas(b);
icon.setBounds(0, 0, c.getWidth(), c.getHeight());
icon.draw(c);
iconOn = Icon.createWithBitmap(b);
icon.setSlashed(true);
b = Bitmap.createBitmap(icon.getIntrinsicWidth(), icon.getIntrinsicHeight(), Bitmap.Config.ARGB_8888);
c = new Canvas(b);
icon.setBounds(0, 0, c.getWidth(), c.getHeight());
icon.draw(c);
iconOff = Icon.createWithBitmap(b);
}
@Override
public void onClick() {
if (tunnel != null) {
final Tile tile = getQsTile();
tile.setIcon(tile.getIcon() == iconOn ? iconOff : iconOn);
tile.updateTile();
tunnel.setState(State.TOGGLE).whenComplete(this::onToggleFinished);
} else {
final Intent intent = new Intent(this, MainActivity.class);
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
startActivityAndCollapse(intent);
}
}
@Override
public void onStartListening() {
Application.getTunnelManager().addOnPropertyChangedCallback(onTunnelChangedCallback);
if (tunnel != null)
tunnel.addOnPropertyChangedCallback(onStateChangedCallback);
updateTile();
}
@Override
public void onStopListening() {
if (tunnel != null)
tunnel.removeOnPropertyChangedCallback(onStateChangedCallback);
Application.getTunnelManager().removeOnPropertyChangedCallback(onTunnelChangedCallback);
}
private void onToggleFinished(@SuppressWarnings("unused") final State state,
@Nullable final Throwable throwable) {
if (throwable == null)
return;
final String error = ExceptionLoggers.unwrapMessage(throwable);
final String message = getString(R.string.toggle_error, error);
Log.e(TAG, message, throwable);
Toast.makeText(this, message, Toast.LENGTH_LONG).show();
}
private void updateTile() {
// Update the tunnel.
final Tunnel newTunnel = Application.getTunnelManager().getLastUsedTunnel();
if (newTunnel != tunnel) {
if (tunnel != null)
tunnel.removeOnPropertyChangedCallback(onStateChangedCallback);
tunnel = newTunnel;
if (tunnel != null)
tunnel.addOnPropertyChangedCallback(onStateChangedCallback);
}
// Update the tile contents.
final String label;
final int state;
final Tile tile = getQsTile();
if (tunnel != null) {
label = tunnel.getName();
state = tunnel.getState() == Tunnel.State.UP ? Tile.STATE_ACTIVE : Tile.STATE_INACTIVE;
} else {
label = getString(R.string.app_name);
state = Tile.STATE_INACTIVE;
}
if (tile == null)
return;
tile.setLabel(label);
if (tile.getState() != state) {
tile.setIcon(state == Tile.STATE_ACTIVE ? iconOn : iconOff);
tile.setState(state);
}
tile.updateTile();
}
private final class OnStateChangedCallback extends OnPropertyChangedCallback {
@Override
public void onPropertyChanged(final Observable sender, final int propertyId) {
if (!Objects.equals(sender, tunnel)) {
sender.removeOnPropertyChangedCallback(this);
return;
}
if (propertyId != 0 && propertyId != BR.state)
return;
updateTile();
}
}
private final class OnTunnelChangedCallback extends OnPropertyChangedCallback {
@Override
public void onPropertyChanged(final Observable sender, final int propertyId) {
if (propertyId != 0 && propertyId != BR.lastUsedTunnel)
return;
updateTile();
}
}
}
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