wireguard-android/ui/src/main/java/com/wireguard/android/fragment/TunnelListFragment.kt

342 lines
14 KiB
Kotlin

/*
* Copyright © 2017-2023 WireGuard LLC. All Rights Reserved.
* SPDX-License-Identifier: Apache-2.0
*/
package com.wireguard.android.fragment
import android.content.Intent
import android.content.res.Resources
import android.os.Bundle
import android.util.Log
import android.view.LayoutInflater
import android.view.Menu
import android.view.MenuItem
import android.view.View
import android.view.ViewGroup
import android.view.animation.Animation
import android.view.animation.AnimationUtils
import android.widget.Toast
import androidx.activity.OnBackPressedCallback
import androidx.activity.addCallback
import androidx.activity.result.contract.ActivityResultContracts
import androidx.appcompat.app.AppCompatActivity
import androidx.appcompat.view.ActionMode
import androidx.lifecycle.lifecycleScope
import com.google.android.material.snackbar.Snackbar
import com.google.zxing.qrcode.QRCodeReader
import com.journeyapps.barcodescanner.ScanContract
import com.journeyapps.barcodescanner.ScanOptions
import com.wireguard.android.Application
import com.wireguard.android.R
import com.wireguard.android.activity.TunnelCreatorActivity
import com.wireguard.android.databinding.ObservableKeyedRecyclerViewAdapter.RowConfigurationHandler
import com.wireguard.android.databinding.TunnelListFragmentBinding
import com.wireguard.android.databinding.TunnelListItemBinding
import com.wireguard.android.model.ObservableTunnel
import com.wireguard.android.updater.SnackbarUpdateShower
import com.wireguard.android.util.ErrorMessages
import com.wireguard.android.util.QrCodeFromFileScanner
import com.wireguard.android.util.TunnelImporter
import com.wireguard.android.widget.MultiselectableRelativeLayout
import kotlinx.coroutines.SupervisorJob
import kotlinx.coroutines.async
import kotlinx.coroutines.awaitAll
import kotlinx.coroutines.launch
/**
* Fragment containing a list of known WireGuard tunnels. It allows creating and deleting tunnels.
*/
class TunnelListFragment : BaseFragment() {
private val actionModeListener = ActionModeListener()
private var actionMode: ActionMode? = null
private var backPressedCallback: OnBackPressedCallback? = null
private var binding: TunnelListFragmentBinding? = null
private val tunnelFileImportResultLauncher = registerForActivityResult(ActivityResultContracts.GetContent()) { data ->
if (data == null) return@registerForActivityResult
val activity = activity ?: return@registerForActivityResult
val contentResolver = activity.contentResolver ?: return@registerForActivityResult
activity.lifecycleScope.launch {
if (QrCodeFromFileScanner.validContentType(contentResolver, data)) {
try {
val qrCodeFromFileScanner = QrCodeFromFileScanner(contentResolver, QRCodeReader())
val result = qrCodeFromFileScanner.scan(data)
TunnelImporter.importTunnel(parentFragmentManager, result.text) { showSnackbar(it) }
} catch (e: Exception) {
val error = ErrorMessages[e]
val message = Application.get().resources.getString(R.string.import_error, error)
Log.e(TAG, message, e)
showSnackbar(message)
}
} else {
TunnelImporter.importTunnel(contentResolver, data) { showSnackbar(it) }
}
}
}
private val qrImportResultLauncher = registerForActivityResult(ScanContract()) { result ->
val qrCode = result.contents
val activity = activity
if (qrCode != null && activity != null) {
activity.lifecycleScope.launch { TunnelImporter.importTunnel(parentFragmentManager, qrCode) { showSnackbar(it) } }
}
}
override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
super.onViewCreated(view, savedInstanceState)
if (savedInstanceState != null) {
val checkedItems = savedInstanceState.getIntegerArrayList(CHECKED_ITEMS)
if (checkedItems != null) {
for (i in checkedItems) actionModeListener.setItemChecked(i, true)
}
}
}
override fun onCreateView(
inflater: LayoutInflater, container: ViewGroup?,
savedInstanceState: Bundle?
): View? {
super.onCreateView(inflater, container, savedInstanceState)
binding = TunnelListFragmentBinding.inflate(inflater, container, false)
val bottomSheet = AddTunnelsSheet()
binding?.apply {
createFab.setOnClickListener {
if (childFragmentManager.findFragmentByTag("BOTTOM_SHEET") != null)
return@setOnClickListener
childFragmentManager.setFragmentResultListener(AddTunnelsSheet.REQUEST_KEY_NEW_TUNNEL, viewLifecycleOwner) { _, bundle ->
when (bundle.getString(AddTunnelsSheet.REQUEST_METHOD)) {
AddTunnelsSheet.REQUEST_CREATE -> {
startActivity(Intent(requireActivity(), TunnelCreatorActivity::class.java))
}
AddTunnelsSheet.REQUEST_IMPORT -> {
tunnelFileImportResultLauncher.launch("*/*")
}
AddTunnelsSheet.REQUEST_SCAN -> {
qrImportResultLauncher.launch(
ScanOptions()
.setOrientationLocked(false)
.setBeepEnabled(false)
.setPrompt(getString(R.string.qr_code_hint))
)
}
}
}
bottomSheet.showNow(childFragmentManager, "BOTTOM_SHEET")
}
executePendingBindings()
}
backPressedCallback = requireActivity().onBackPressedDispatcher.addCallback(this) { actionMode?.finish() }
backPressedCallback?.isEnabled = false
SnackbarUpdateShower.attachToActivity(requireActivity(), binding?.mainContainer!!, binding?.createFab)
return binding?.root
}
override fun onDestroyView() {
binding = null
super.onDestroyView()
}
override fun onSaveInstanceState(outState: Bundle) {
super.onSaveInstanceState(outState)
outState.putIntegerArrayList(CHECKED_ITEMS, actionModeListener.getCheckedItems())
}
override fun onSelectedTunnelChanged(oldTunnel: ObservableTunnel?, newTunnel: ObservableTunnel?) {
binding ?: return
lifecycleScope.launch {
val tunnels = Application.getTunnelManager().getTunnels()
if (newTunnel != null) viewForTunnel(newTunnel, tunnels)?.setSingleSelected(true)
if (oldTunnel != null) viewForTunnel(oldTunnel, tunnels)?.setSingleSelected(false)
}
}
private fun onTunnelDeletionFinished(count: Int, throwable: Throwable?) {
val message: String
val ctx = activity ?: Application.get()
if (throwable == null) {
message = ctx.resources.getQuantityString(R.plurals.delete_success, count, count)
} else {
val error = ErrorMessages[throwable]
message = ctx.resources.getQuantityString(R.plurals.delete_error, count, count, error)
Log.e(TAG, message, throwable)
}
showSnackbar(message)
}
override fun onViewStateRestored(savedInstanceState: Bundle?) {
super.onViewStateRestored(savedInstanceState)
binding ?: return
binding!!.fragment = this
lifecycleScope.launch { binding!!.tunnels = Application.getTunnelManager().getTunnels() }
binding!!.rowConfigurationHandler = object : RowConfigurationHandler<TunnelListItemBinding, ObservableTunnel> {
override fun onConfigureRow(binding: TunnelListItemBinding, item: ObservableTunnel, position: Int) {
binding.fragment = this@TunnelListFragment
binding.root.setOnClickListener {
if (actionMode == null) {
selectedTunnel = item
} else {
actionModeListener.toggleItemChecked(position)
}
}
binding.root.setOnLongClickListener {
actionModeListener.toggleItemChecked(position)
true
}
if (actionMode != null)
(binding.root as MultiselectableRelativeLayout).setMultiSelected(actionModeListener.checkedItems.contains(position))
else
(binding.root as MultiselectableRelativeLayout).setSingleSelected(selectedTunnel == item)
}
}
}
private fun showSnackbar(message: CharSequence) {
val binding = binding
if (binding != null)
Snackbar.make(binding.mainContainer, message, Snackbar.LENGTH_LONG)
.setAnchorView(binding.createFab)
.show()
else
Toast.makeText(activity ?: Application.get(), message, Toast.LENGTH_SHORT).show()
}
private fun viewForTunnel(tunnel: ObservableTunnel, tunnels: List<*>): MultiselectableRelativeLayout? {
return binding?.tunnelList?.findViewHolderForAdapterPosition(tunnels.indexOf(tunnel))?.itemView as? MultiselectableRelativeLayout
}
private inner class ActionModeListener : ActionMode.Callback {
val checkedItems: MutableCollection<Int> = HashSet()
private var resources: Resources? = null
fun getCheckedItems(): ArrayList<Int> {
return ArrayList(checkedItems)
}
override fun onActionItemClicked(mode: ActionMode, item: MenuItem): Boolean {
return when (item.itemId) {
R.id.menu_action_delete -> {
val activity = activity ?: return true
val copyCheckedItems = HashSet(checkedItems)
binding?.createFab?.apply {
visibility = View.VISIBLE
scaleX = 1f
scaleY = 1f
}
activity.lifecycleScope.launch {
try {
val tunnels = Application.getTunnelManager().getTunnels()
val tunnelsToDelete = ArrayList<ObservableTunnel>()
for (position in copyCheckedItems) tunnelsToDelete.add(tunnels[position])
val futures = tunnelsToDelete.map { async(SupervisorJob()) { it.deleteAsync() } }
onTunnelDeletionFinished(futures.awaitAll().size, null)
} catch (e: Throwable) {
onTunnelDeletionFinished(0, e)
}
}
checkedItems.clear()
mode.finish()
true
}
R.id.menu_action_select_all -> {
lifecycleScope.launch {
val tunnels = Application.getTunnelManager().getTunnels()
for (i in 0 until tunnels.size) {
setItemChecked(i, true)
}
}
true
}
else -> false
}
}
override fun onCreateActionMode(mode: ActionMode, menu: Menu): Boolean {
actionMode = mode
backPressedCallback?.isEnabled = true
if (activity != null) {
resources = activity!!.resources
}
animateFab(binding?.createFab, false)
mode.menuInflater.inflate(R.menu.tunnel_list_action_mode, menu)
binding?.tunnelList?.adapter?.notifyDataSetChanged()
return true
}
override fun onDestroyActionMode(mode: ActionMode) {
actionMode = null
backPressedCallback?.isEnabled = false
resources = null
animateFab(binding?.createFab, true)
checkedItems.clear()
binding?.tunnelList?.adapter?.notifyDataSetChanged()
}
override fun onPrepareActionMode(mode: ActionMode, menu: Menu): Boolean {
updateTitle(mode)
return false
}
fun setItemChecked(position: Int, checked: Boolean) {
if (checked) {
checkedItems.add(position)
} else {
checkedItems.remove(position)
}
val adapter = if (binding == null) null else binding!!.tunnelList.adapter
if (actionMode == null && !checkedItems.isEmpty() && activity != null) {
(activity as AppCompatActivity).startSupportActionMode(this)
} else if (actionMode != null && checkedItems.isEmpty()) {
actionMode!!.finish()
}
adapter?.notifyItemChanged(position)
updateTitle(actionMode)
}
fun toggleItemChecked(position: Int) {
setItemChecked(position, !checkedItems.contains(position))
}
private fun updateTitle(mode: ActionMode?) {
if (mode == null) {
return
}
val count = checkedItems.size
if (count == 0) {
mode.title = ""
} else {
mode.title = resources!!.getQuantityString(R.plurals.delete_title, count, count)
}
}
private fun animateFab(view: View?, show: Boolean) {
view ?: return
val animation = AnimationUtils.loadAnimation(
context, if (show) R.anim.scale_up else R.anim.scale_down
)
animation.setAnimationListener(object : Animation.AnimationListener {
override fun onAnimationRepeat(animation: Animation?) {
}
override fun onAnimationEnd(animation: Animation?) {
if (!show) view.visibility = View.GONE
}
override fun onAnimationStart(animation: Animation?) {
if (show) view.visibility = View.VISIBLE
}
})
view.startAnimation(animation)
}
}
companion object {
private const val CHECKED_ITEMS = "CHECKED_ITEMS"
private const val TAG = "WireGuard/TunnelListFragment"
}
}