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/*
* Copyright © 2017-2019 WireGuard LLC. All Rights Reserved.
* SPDX-License-Identifier: Apache-2.0
*/
package com.wireguard.android;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.drawable.Icon;
import android.os.Build;
import android.os.IBinder;
import android.service.quicksettings.Tile;
import android.service.quicksettings.TileService;
import android.util.Log;
import com.wireguard.android.activity.MainActivity;
import com.wireguard.android.activity.TunnelToggleActivity;
import com.wireguard.android.backend.Tunnel.State;
import com.wireguard.android.model.ObservableTunnel;
import com.wireguard.android.widget.SlashDrawable;
import com.wireguard.util.NonNullForAll;
import java.util.Objects;
import androidx.annotation.Nullable;
import androidx.annotation.RequiresApi;
import androidx.databinding.Observable;
import androidx.databinding.Observable.OnPropertyChangedCallback;
/**
* 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.
*/
@RequiresApi(Build.VERSION_CODES.N)
@NonNullForAll
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 Icon iconOff;
@Nullable private Icon iconOn;
@Nullable private ObservableTunnel tunnel;
/* This works around an annoying unsolved frameworks bug some people are hitting. */
@Override
@Nullable
public IBinder onBind(final Intent intent) {
IBinder ret = null;
try {
ret = super.onBind(intent);
} catch (final Exception e) {
Log.d(TAG, "Failed to bind to TileService", e);
}
return ret;
}
@Override
public void onClick() {
if (tunnel != null) {
unlockAndRun(() -> {
final Tile tile = getQsTile();
if (tile != null) {
tile.setIcon(tile.getIcon() == iconOn ? iconOff : iconOn);
tile.updateTile();
}
tunnel.setState(State.TOGGLE).whenComplete((v, t) -> {
if (t == null) {
updateTile();
} else {
final Intent toggleIntent = new Intent(this, TunnelToggleActivity.class);
toggleIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
startActivity(toggleIntent);
}
});
});
} else {
final Intent intent = new Intent(this, MainActivity.class);
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
startActivityAndCollapse(intent);
}
}
@Override
public void onCreate() {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.P) {
iconOff = iconOn = Icon.createWithResource(this, R.drawable.ic_tile);
return;
}
final SlashDrawable icon = new SlashDrawable(getResources().getDrawable(R.drawable.ic_tile, Application.get().getTheme()));
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 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 updateTile() {
// Update the tunnel.
final ObservableTunnel 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() == 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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