75 lines
2.3 KiB
Java
75 lines
2.3 KiB
Java
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/*
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* Copyright (C) 2019 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package android.view.accessibility;
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import android.view.View;
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/** @hide */
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public final class AccessibilityNodeIdManager {
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private WeakSparseArray<View> mIdsToViews = new WeakSparseArray<View>();
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private static AccessibilityNodeIdManager sIdManager;
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/**
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* Gets singleton.
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* @return The instance.
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*/
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public static synchronized AccessibilityNodeIdManager getInstance() {
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if (sIdManager == null) {
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sIdManager = new AccessibilityNodeIdManager();
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}
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return sIdManager;
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}
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private AccessibilityNodeIdManager() {
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}
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/**
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* Register view to be kept track of by the accessibility system.
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* Must be paired with unregisterView, otherwise this will leak.
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* @param view The view to be registered.
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* @param id The accessibilityViewId of the view.
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*/
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public void registerViewWithId(View view, int id) {
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synchronized (mIdsToViews) {
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mIdsToViews.append(id, view);
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}
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}
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/**
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* Unregister view, accessibility won't keep track of this view after this call.
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* @param id The id returned from registerView when the view as first associated.
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*/
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public void unregisterViewWithId(int id) {
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synchronized (mIdsToViews) {
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mIdsToViews.remove(id);
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}
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}
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/**
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* Accessibility uses this to find the view in the hierarchy.
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* @param id The accessibility view id.
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* @return The view.
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*/
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public View findView(int id) {
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View view = null;
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synchronized (mIdsToViews) {
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view = mIdsToViews.get(id);
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}
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return view != null && view.includeForAccessibility() ? view : null;
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}
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}
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