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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 androidx.annotation.RequiresApi
import androidx.databinding.Observable
import androidx.databinding.Observable.OnPropertyChangedCallback
import com.wireguard.android.activity.MainActivity
import com.wireguard.android.activity.TunnelToggleActivity
import com.wireguard.android.backend.Tunnel
import com.wireguard.android.model.ObservableTunnel
import com.wireguard.android.widget.SlashDrawable
/**
* 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)
class QuickTileService : TileService() {
private val onStateChangedCallback = OnStateChangedCallback()
private val onTunnelChangedCallback = OnTunnelChangedCallback()
private var iconOff: Icon? = null
private var iconOn: Icon? = null
private var tunnel: ObservableTunnel? = null
/* This works around an annoying unsolved frameworks bug some people are hitting. */
override fun onBind(intent: Intent): IBinder? {
var ret: IBinder? = null
try {
ret = super.onBind(intent)
} catch (e: Exception) {
Log.d(TAG, "Failed to bind to TileService", e)
}
return ret
}
override fun onClick() {
if (tunnel != null) {
unlockAndRun {
val tile = qsTile
if (tile != null) {
tile.icon = if (tile.icon == iconOn) iconOff else iconOn
tile.updateTile()
}
tunnel!!.setStateAsync(Tunnel.State.TOGGLE).whenComplete { _, t ->
if (t == null) {
updateTile()
} else {
val toggleIntent = Intent(this, TunnelToggleActivity::class.java)
toggleIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK)
startActivity(toggleIntent)
}
}
}
} else {
val intent = Intent(this, MainActivity::class.java)
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK)
startActivityAndCollapse(intent)
}
}
override fun onCreate() {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.P) {
iconOn = Icon.createWithResource(this, R.drawable.ic_tile)
iconOff = iconOn
return
}
val icon = SlashDrawable(resources.getDrawable(R.drawable.ic_tile, Application.get().theme))
icon.setAnimationEnabled(false) /* Unfortunately we can't have animations, since Icons are marshaled. */
icon.setSlashed(false)
var b = Bitmap.createBitmap(icon.intrinsicWidth, icon.intrinsicHeight, Bitmap.Config.ARGB_8888)
?: return
var c = Canvas(b)
icon.setBounds(0, 0, c.width, c.height)
icon.draw(c)
iconOn = Icon.createWithBitmap(b)
icon.setSlashed(true)
b = Bitmap.createBitmap(icon.intrinsicWidth, icon.intrinsicHeight, Bitmap.Config.ARGB_8888)
?: return
c = Canvas(b)
icon.setBounds(0, 0, c.width, c.height)
icon.draw(c)
iconOff = Icon.createWithBitmap(b)
}
override fun onStartListening() {
Application.getTunnelManager().addOnPropertyChangedCallback(onTunnelChangedCallback)
if (tunnel != null) tunnel!!.addOnPropertyChangedCallback(onStateChangedCallback)
updateTile()
}
override fun onStopListening() {
if (tunnel != null) tunnel!!.removeOnPropertyChangedCallback(onStateChangedCallback)
Application.getTunnelManager().removeOnPropertyChangedCallback(onTunnelChangedCallback)
}
private fun updateTile() {
// Update the tunnel.
val newTunnel = Application.getTunnelManager().lastUsedTunnel
if (newTunnel != tunnel) {
if (tunnel != null) tunnel!!.removeOnPropertyChangedCallback(onStateChangedCallback)
tunnel = newTunnel
if (tunnel != null) tunnel!!.addOnPropertyChangedCallback(onStateChangedCallback)
}
// Update the tile contents.
val label: String
val state: Int
val tile = qsTile
if (tunnel != null) {
label = tunnel!!.name
state = if (tunnel!!.state == Tunnel.State.UP) Tile.STATE_ACTIVE else Tile.STATE_INACTIVE
} else {
label = getString(R.string.app_name)
state = Tile.STATE_INACTIVE
}
if (tile == null) return
tile.label = label
if (tile.state != state) {
tile.icon = if (state == Tile.STATE_ACTIVE) iconOn else iconOff
tile.state = state
}
tile.updateTile()
}
private inner class OnStateChangedCallback : OnPropertyChangedCallback() {
override fun onPropertyChanged(sender: Observable, propertyId: Int) {
if (sender != tunnel) {
sender.removeOnPropertyChangedCallback(this)
return
}
if (propertyId != 0 && propertyId != BR.state) return
updateTile()
}
}
private inner class OnTunnelChangedCallback : OnPropertyChangedCallback() {
override fun onPropertyChanged(sender: Observable, propertyId: Int) {
if (propertyId != 0 && propertyId != BR.lastUsedTunnel) return
updateTile()
}
}
companion object {
private val TAG = "WireGuard/${QuickTileService::class.simpleName}"
}
}
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