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/*
* Copyright (C) 2019 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.quickstep;
import static com.android.launcher3.util.PackageManagerHelper.getPackageFilter;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.res.Resources;
import android.util.Log;
import com.android.launcher3.util.MainThreadInitializedObject;
import java.util.ArrayList;
import java.util.List;
/**
* Observer for the resource config that specifies the navigation bar mode.
*/
public class SysUINavigationMode {
public enum Mode {
THREE_BUTTONS(false, 0),
TWO_BUTTONS(true, 1),
NO_BUTTON(true, 2);
public final boolean hasGestures;
public final int resValue;
Mode(boolean hasGestures, int resValue) {
this.hasGestures = hasGestures;
this.resValue = resValue;
}
}
public static Mode getMode(Context context) {
return INSTANCE.get(context).getMode();
}
public static MainThreadInitializedObject<SysUINavigationMode> INSTANCE =
new MainThreadInitializedObject<>(SysUINavigationMode::new);
private static final String TAG = "SysUINavigationMode";
private final String ACTION_OVERLAY_CHANGED = "android.intent.action.OVERLAY_CHANGED";
private static final String NAV_BAR_INTERACTION_MODE_RES_NAME =
"config_navBarInteractionMode";
private final Context mContext;
private Mode mMode;
private final List<NavigationModeChangeListener> mChangeListeners = new ArrayList<>();
public SysUINavigationMode(Context context) {
mContext = context;
initializeMode();
mContext.registerReceiver(new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
Mode oldMode = mMode;
initializeMode();
if (mMode != oldMode) {
dispatchModeChange();
}
}
}, getPackageFilter("android", ACTION_OVERLAY_CHANGED));
}
private void initializeMode() {
int modeInt = getSystemIntegerRes(mContext, NAV_BAR_INTERACTION_MODE_RES_NAME);
for(Mode m : Mode.values()) {
if (m.resValue == modeInt) {
mMode = m;
}
}
}
private void dispatchModeChange() {
for (NavigationModeChangeListener listener : mChangeListeners) {
listener.onNavigationModeChanged(mMode);
}
}
public Mode addModeChangeListener(NavigationModeChangeListener listener) {
mChangeListeners.add(listener);
return mMode;
}
public void removeModeChangeListener(NavigationModeChangeListener listener) {
mChangeListeners.remove(listener);
}
public Mode getMode() {
return mMode;
}
private static int getSystemIntegerRes(Context context, String resName) {
Resources res = context.getResources();
int resId = res.getIdentifier(resName, "integer", "android");
if (resId != 0) {
return res.getInteger(resId);
} else {
Log.e(TAG, "Failed to get system resource ID. Incompatible framework version?");
return -1;
}
}
public interface NavigationModeChangeListener {
void onNavigationModeChanged(Mode newMode);
}
}
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