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/*
* Copyright (C) 2021 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.systemui.accessibility;
import static android.provider.Settings.Secure.ACCESSIBILITY_BUTTON_MODE_FLOATING_MENU;
import static android.provider.Settings.Secure.ACCESSIBILITY_BUTTON_MODE_GESTURE;
import static android.provider.Settings.Secure.ACCESSIBILITY_BUTTON_MODE_NAVIGATION_BAR;
import android.annotation.IntDef;
import android.annotation.MainThread;
import android.content.Context;
import android.provider.Settings;
import android.util.Log;
import com.android.systemui.dagger.SysUISingleton;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import javax.inject.Inject;
/**
* Observes changes of the accessibility button mode
* {@link Settings.Secure#ACCESSIBILITY_BUTTON_MODE} and notify its listeners.
*/
@MainThread
@SysUISingleton
public class AccessibilityButtonModeObserver extends
SecureSettingsContentObserver<AccessibilityButtonModeObserver.ModeChangedListener> {
private static final String TAG = "A11yButtonModeObserver";
private static final int ACCESSIBILITY_BUTTON_MODE_DEFAULT =
ACCESSIBILITY_BUTTON_MODE_NAVIGATION_BAR;
@Retention(RetentionPolicy.SOURCE)
@IntDef({
ACCESSIBILITY_BUTTON_MODE_NAVIGATION_BAR,
ACCESSIBILITY_BUTTON_MODE_FLOATING_MENU,
ACCESSIBILITY_BUTTON_MODE_GESTURE
})
public @interface AccessibilityButtonMode {}
/** Listener for accessibility button mode changes. */
public interface ModeChangedListener {
/**
* Called when accessibility button mode changes.
*
* @param mode Current accessibility button mode
*/
void onAccessibilityButtonModeChanged(@AccessibilityButtonMode int mode);
}
@Inject
public AccessibilityButtonModeObserver(Context context) {
super(context, Settings.Secure.ACCESSIBILITY_BUTTON_MODE);
}
@Override
void onValueChanged(ModeChangedListener listener, String value) {
final int mode = parseAccessibilityButtonMode(value);
listener.onAccessibilityButtonModeChanged(mode);
}
/**
* Gets the current accessibility button mode from the current user's settings.
*
* See {@link Settings.Secure#ACCESSIBILITY_BUTTON_MODE}.
*/
public int getCurrentAccessibilityButtonMode() {
final String value = getSettingsValue();
return parseAccessibilityButtonMode(value);
}
private int parseAccessibilityButtonMode(String value) {
int mode;
try {
mode = Integer.parseInt(value);
} catch (NumberFormatException e) {
Log.e(TAG, "Invalid string for " + e);
mode = ACCESSIBILITY_BUTTON_MODE_DEFAULT;
}
return mode;
}
}
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