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/*
* Copyright (C) 2017 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.settings.bluetooth;
import android.content.Context;
import androidx.preference.PreferenceFragmentCompat;
import androidx.preference.PreferenceScreen;
import com.android.settings.core.PreferenceControllerMixin;
import com.android.settingslib.bluetooth.CachedBluetoothDevice;
import com.android.settingslib.core.AbstractPreferenceController;
import com.android.settingslib.core.lifecycle.Lifecycle;
import com.android.settingslib.core.lifecycle.LifecycleObserver;
import com.android.settingslib.core.lifecycle.events.OnPause;
import com.android.settingslib.core.lifecycle.events.OnResume;
/**
* This class provides common lifecycle and bluetooth device event registration for Bluetooth device
* details controllers.
*/
public abstract class BluetoothDetailsController extends AbstractPreferenceController
implements PreferenceControllerMixin, CachedBluetoothDevice.Callback, LifecycleObserver,
OnPause, OnResume {
protected final Context mContext;
protected final PreferenceFragmentCompat mFragment;
protected final CachedBluetoothDevice mCachedDevice;
public BluetoothDetailsController(Context context, PreferenceFragmentCompat fragment,
CachedBluetoothDevice device, Lifecycle lifecycle) {
super(context);
mContext = context;
mFragment = fragment;
mCachedDevice = device;
lifecycle.addObserver(this);
}
@Override
public void onPause() {
mCachedDevice.unregisterCallback(this);
}
@Override
public void onResume() {
mCachedDevice.registerCallback(this);
refresh();
}
@Override
public boolean isAvailable() {
return true;
}
@Override
public void onDeviceAttributesChanged() {
refresh();
}
@Override
public final void displayPreference(PreferenceScreen screen) {
init(screen);
super.displayPreference(screen);
}
/**
* This is a method to do one-time initialization when the screen is first created, such as
* adding preferences.
* @param screen the screen where this controller's preferences should be added
*/
protected abstract void init(PreferenceScreen screen);
/**
* This method is called when something about the bluetooth device has changed, and this object
* should update the preferences it manages based on the new state.
*/
protected abstract void refresh();
}
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