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/*
* Copyright © 2020 WireGuard LLC. All Rights Reserved.
* SPDX-License-Identifier: Apache-2.0
*/
package com.wireguard.android.preference
import android.annotation.SuppressLint
import android.content.Context
import android.content.Intent
import android.util.AttributeSet
import androidx.preference.Preference
import com.wireguard.android.Application
import com.wireguard.android.R
import com.wireguard.android.activity.SettingsActivity
import com.wireguard.android.backend.Tunnel
import com.wireguard.android.backend.WgQuickBackend
import java9.util.concurrent.CompletableFuture
import kotlin.system.exitProcess
class KernelModuleDisablerPreference(context: Context, attrs: AttributeSet?) : Preference(context, attrs) {
private var state = State.UNKNOWN
init {
isVisible = false
Application.getBackendAsync().thenAccept { backend ->
setState(if (backend is WgQuickBackend) State.ENABLED else State.DISABLED)
}
}
override fun getSummary() = if (state == State.UNKNOWN) "" else context.getString(state.summaryResourceId)
override fun getTitle() = if (state == State.UNKNOWN) "" else context.getString(state.titleResourceId)
@SuppressLint("ApplySharedPref")
override fun onClick() {
if (state == State.DISABLED) {
setState(State.ENABLING)
Application.getSharedPreferences().edit().putBoolean("disable_kernel_module", false).commit()
} else if (state == State.ENABLED) {
setState(State.DISABLING)
Application.getSharedPreferences().edit().putBoolean("disable_kernel_module", true).commit()
}
Application.getAsyncWorker().runAsync {
Application.getTunnelManager().tunnels.thenApply { observableTunnels ->
val downings = observableTunnels.map { it.setStateAsync(Tunnel.State.DOWN).toCompletableFuture() }.toTypedArray()
CompletableFuture.allOf(*downings).thenRun {
val restartIntent = Intent(context, SettingsActivity::class.java)
restartIntent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP)
restartIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK)
Application.get().startActivity(restartIntent)
exitProcess(0)
}
}.join()
}
}
private fun setState(state: State) {
if (this.state == state) return
this.state = state
if (isEnabled != state.shouldEnableView) isEnabled = state.shouldEnableView
if (isVisible != state.visible) isVisible = state.visible
notifyChanged()
}
private enum class State(val titleResourceId: Int, val summaryResourceId: Int, val shouldEnableView: Boolean, val visible: Boolean) {
UNKNOWN(0, 0, false, false),
ENABLED(R.string.module_disabler_enabled_title, R.string.module_disabler_enabled_summary, true, true),
DISABLED(R.string.module_disabler_disabled_title, R.string.module_disabler_disabled_summary, true, true),
ENABLING(R.string.module_disabler_disabled_title, R.string.success_application_will_restart, false, true),
DISABLING(R.string.module_disabler_enabled_title, R.string.success_application_will_restart, false, true);
}
}
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