lawnchair/src/com/android/launcher3/compat/AccessibilityManagerCompat.java

/*
 * 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.launcher3.compat;

import android.accessibilityservice.AccessibilityServiceInfo;
import android.content.Context;
import android.view.View;
import android.view.accessibility.AccessibilityEvent;
import android.view.accessibility.AccessibilityManager;

import com.android.launcher3.Utilities;

public class AccessibilityManagerCompat {

    public static boolean isAccessibilityEnabled(Context context) {
        return getManager(context).isEnabled();
    }

    public static boolean isObservedEventType(Context context, int eventType) {
        // TODO: Use new API once available
        return isAccessibilityEnabled(context);
    }

    public static void sendCustomAccessibilityEvent(View target, int type, String text) {
        if (isObservedEventType(target.getContext(), type)) {
            AccessibilityEvent event = AccessibilityEvent.obtain(type);
            target.onInitializeAccessibilityEvent(event);
            event.getText().add(text);
            getManager(target.getContext()).sendAccessibilityEvent(event);
        }
    }

    private static AccessibilityManager getManager(Context context) {
        return (AccessibilityManager) context.getSystemService(Context.ACCESSIBILITY_SERVICE);
    }

    public static void sendEventToTest(Context context, String eventTag) {
        if (!Utilities.IS_RUNNING_IN_TEST_HARNESS) return;

        final AccessibilityManager accessibilityManager = getManager(context);
        if (accessibilityManager.isEnabled() &&
                accessibilityManager.getEnabledAccessibilityServiceList(
                        AccessibilityServiceInfo.FEEDBACK_ALL_MASK).size() == 0) {

            final AccessibilityEvent e = AccessibilityEvent.obtain(
                    AccessibilityEvent.TYPE_ANNOUNCEMENT);
            e.setClassName(eventTag);
            accessibilityManager.sendAccessibilityEvent(e);
        }
    }
}