145 lines
3.4 KiB
Java
145 lines
3.4 KiB
Java
/*
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* Copyright (C) 2006 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.os;
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import android.compat.annotation.UnsupportedAppUsage;
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import java.util.ArrayList;
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/** @hide */
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public class RegistrantList
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{
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ArrayList registrants = new ArrayList(); // of Registrant
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@UnsupportedAppUsage
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public RegistrantList() {
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}
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@UnsupportedAppUsage
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public synchronized void
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add(Handler h, int what, Object obj)
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{
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add(new Registrant(h, what, obj));
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}
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@UnsupportedAppUsage
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public synchronized void
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addUnique(Handler h, int what, Object obj)
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{
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// if the handler is already in the registrant list, remove it
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remove(h);
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add(new Registrant(h, what, obj));
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}
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@UnsupportedAppUsage
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public synchronized void
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add(Registrant r)
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{
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removeCleared();
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registrants.add(r);
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}
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@UnsupportedAppUsage
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public synchronized void
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removeCleared()
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{
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for (int i = registrants.size() - 1; i >= 0 ; i--) {
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Registrant r = (Registrant) registrants.get(i);
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if (r.refH == null) {
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registrants.remove(i);
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}
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}
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}
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public synchronized void removeAll() {
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registrants.clear();
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}
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@UnsupportedAppUsage
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public synchronized int
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size()
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{
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return registrants.size();
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}
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@UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.P)
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public synchronized Object
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get(int index)
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{
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return registrants.get(index);
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}
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private synchronized void
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internalNotifyRegistrants (Object result, Throwable exception)
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{
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for (int i = 0, s = registrants.size(); i < s ; i++) {
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Registrant r = (Registrant) registrants.get(i);
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r.internalNotifyRegistrant(result, exception);
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}
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}
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@UnsupportedAppUsage
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public /*synchronized*/ void
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notifyRegistrants()
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{
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internalNotifyRegistrants(null, null);
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}
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public /*synchronized*/ void
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notifyException(Throwable exception)
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{
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internalNotifyRegistrants (null, exception);
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}
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@UnsupportedAppUsage
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public /*synchronized*/ void
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notifyResult(Object result)
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{
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internalNotifyRegistrants (result, null);
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}
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@UnsupportedAppUsage
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public /*synchronized*/ void
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notifyRegistrants(AsyncResult ar)
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{
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internalNotifyRegistrants(ar.result, ar.exception);
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}
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@UnsupportedAppUsage
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public synchronized void
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remove(Handler h)
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{
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for (int i = 0, s = registrants.size() ; i < s ; i++) {
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Registrant r = (Registrant) registrants.get(i);
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Handler rh;
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rh = r.getHandler();
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/* Clean up both the requested registrant and
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* any now-collected registrants
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*/
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if (rh == null || rh == h) {
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r.clear();
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}
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}
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removeCleared();
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}
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}
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