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package com.wireguard.android.activity;
import android.content.pm.PackageManager;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.v4.app.ActivityCompat;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.preference.Preference;
import android.support.v7.preference.PreferenceFragmentCompat;
import android.view.MenuItem;
import com.wireguard.android.Application;
import com.wireguard.android.R;
import com.wireguard.android.backend.WgQuickBackend;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashMap;
import java.util.List;
/**
* Interface for changing application-global persistent settings.
*/
public class SettingsActivity extends AppCompatActivity {
private HashMap<Integer, PermissionRequestCallback> permissionRequestCallbacks = new HashMap<>();
private int permissionRequestCounter = 0;
public synchronized void ensurePermissions(String[] permissions, PermissionRequestCallback cb) {
List<String> needPermissions = new ArrayList<>(permissions.length);
for (final String permission : permissions) {
if (ActivityCompat.checkSelfPermission(this, permission) != PackageManager.PERMISSION_GRANTED)
needPermissions.add(permission);
}
if (needPermissions.isEmpty()) {
int[] granted = new int[permissions.length];
Arrays.fill(granted, PackageManager.PERMISSION_GRANTED);
cb.done(permissions, granted);
return;
}
int idx = permissionRequestCounter++;
permissionRequestCallbacks.put(idx, cb);
ActivityCompat.requestPermissions(this, needPermissions.toArray(new String[needPermissions.size()]), idx);
}
@Override
protected void onCreate(final Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if (getSupportFragmentManager().findFragmentById(android.R.id.content) == null) {
getSupportFragmentManager().beginTransaction()
.add(android.R.id.content, new SettingsFragment())
.commit();
}
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case android.R.id.home:
finish();
return true;
default:
return super.onOptionsItemSelected(item);
}
}
@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
final PermissionRequestCallback f = permissionRequestCallbacks.get(requestCode);
if (f != null) {
permissionRequestCallbacks.remove(requestCode);
f.done(permissions, grantResults);
}
}
@FunctionalInterface
public interface PermissionRequestCallback {
void done(String[] permissions, int[] grantResults);
}
public static class SettingsFragment extends PreferenceFragmentCompat {
@Override
public void onCreatePreferences(final Bundle savedInstanceState, final String key) {
addPreferencesFromResource(R.xml.preferences);
if (Application.getComponent().getBackendType() != WgQuickBackend.class) {
final Preference toolsInstaller =
getPreferenceManager().findPreference("tools_installer");
getPreferenceScreen().removePreference(toolsInstaller);
}
}
}
}
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