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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.preference;
import android.content.Context;
import android.support.annotation.NonNull;
import android.support.v7.preference.Preference;
import android.util.AttributeSet;
import com.wireguard.android.Application;
import com.wireguard.android.R;
import com.wireguard.android.util.ToolsInstaller;
/**
* Preference implementing a button that asynchronously runs {@code ToolsInstaller} and displays the
* result as the preference summary.
*/
public class ToolsInstallerPreference extends Preference {
private State state = State.INITIAL;
public ToolsInstallerPreference(final Context context, final AttributeSet attrs) {
super(context, attrs);
}
@Override
public CharSequence getSummary() {
return getContext().getString(state.messageResourceId);
}
@Override
public CharSequence getTitle() {
return getContext().getString(R.string.tools_installer_title);
}
@Override
public void onAttached() {
super.onAttached();
Application.getAsyncWorker().supplyAsync(Application.getToolsInstaller()::areInstalled).whenComplete(this::onCheckResult);
}
private void onCheckResult(final int state, final Throwable throwable) {
if (throwable != null || state == ToolsInstaller.ERROR)
setState(State.INITIAL);
else if ((state & ToolsInstaller.YES) == ToolsInstaller.YES)
setState(State.ALREADY);
else if ((state & (ToolsInstaller.MAGISK | ToolsInstaller.NO)) == (ToolsInstaller.MAGISK | ToolsInstaller.NO))
setState(State.INITIAL_MAGISK);
else if ((state & (ToolsInstaller.SYSTEM | ToolsInstaller.NO)) == (ToolsInstaller.SYSTEM | ToolsInstaller.NO))
setState(State.INITIAL_SYSTEM);
else
setState(State.INITIAL);
}
@Override
protected void onClick() {
setState(State.WORKING);
Application.getAsyncWorker().supplyAsync(Application.getToolsInstaller()::install).whenComplete(this::onInstallResult);
}
private void onInstallResult(final Integer result, final Throwable throwable) {
if (throwable != null)
setState(State.FAILURE);
else if ((result & (ToolsInstaller.YES | ToolsInstaller.MAGISK)) == (ToolsInstaller.YES | ToolsInstaller.MAGISK))
setState(State.SUCCESS_MAGISK);
else if ((result & (ToolsInstaller.YES | ToolsInstaller.SYSTEM)) == (ToolsInstaller.YES | ToolsInstaller.SYSTEM))
setState(State.SUCCESS_SYSTEM);
else
setState(State.FAILURE);
}
private void setState(@NonNull final State state) {
if (this.state == state)
return;
this.state = state;
if (isEnabled() != state.shouldEnableView)
setEnabled(state.shouldEnableView);
notifyChanged();
}
private enum State {
INITIAL(R.string.tools_installer_initial, true),
ALREADY(R.string.tools_installer_already, false),
FAILURE(R.string.tools_installer_failure, true),
WORKING(R.string.tools_installer_working, false),
INITIAL_SYSTEM(R.string.tools_installer_initial_system, true),
SUCCESS_SYSTEM(R.string.tools_installer_success_system, false),
INITIAL_MAGISK(R.string.tools_installer_initial_magisk, true),
SUCCESS_MAGISK(R.string.tools_installer_success_magisk, false);
private final int messageResourceId;
private final boolean shouldEnableView;
State(final int messageResourceId, final boolean shouldEnableView) {
this.messageResourceId = messageResourceId;
this.shouldEnableView = shouldEnableView;
}
}
}
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