// © 2016 and later: Unicode, Inc. and others. // License & terms of use: http://www.unicode.org/copyright.html /** ******************************************************************************* * Copyright (C) 2001-2012, International Business Machines Corporation and * * others. All Rights Reserved. * ******************************************************************************* */ #include "unicode/utypes.h" #if !UCONFIG_NO_SERVICE #include "servnotf.h" #ifdef NOTIFIER_DEBUG #include <stdio.h> #endif U_NAMESPACE_BEGIN EventListener::~EventListener() {} UOBJECT_DEFINE_RTTI_IMPLEMENTATION(EventListener) static UMutex notifyLock; ICUNotifier::ICUNotifier(void) : listeners(NULL) { } ICUNotifier::~ICUNotifier(void) { { Mutex lmx(¬ifyLock); delete listeners; listeners = NULL; } } void ICUNotifier::addListener(const EventListener* l, UErrorCode& status) { if (U_SUCCESS(status)) { if (l == NULL) { status = U_ILLEGAL_ARGUMENT_ERROR; return; } if (acceptsListener(*l)) { Mutex lmx(¬ifyLock); if (listeners == NULL) { LocalPointer<UVector> lpListeners(new UVector(5, status), status); if (U_FAILURE(status)) { return; } listeners = lpListeners.orphan(); } else { for (int i = 0, e = listeners->size(); i < e; ++i) { const EventListener* el = (const EventListener*)(listeners->elementAt(i)); if (l == el) { return; } } } listeners->addElement((void*)l, status); // cast away const } #ifdef NOTIFIER_DEBUG else { fprintf(stderr, "Listener invalid for this notifier."); exit(1); } #endif } } void ICUNotifier::removeListener(const EventListener *l, UErrorCode& status) { if (U_SUCCESS(status)) { if (l == NULL) { status = U_ILLEGAL_ARGUMENT_ERROR; return; } { Mutex lmx(¬ifyLock); if (listeners != NULL) { // identity equality check for (int i = 0, e = listeners->size(); i < e; ++i) { const EventListener* el = (const EventListener*)listeners->elementAt(i); if (l == el) { listeners->removeElementAt(i); if (listeners->size() == 0) { delete listeners; listeners = NULL; } return; } } } } } } void ICUNotifier::notifyChanged(void) { Mutex lmx(¬ifyLock); if (listeners != NULL) { for (int i = 0, e = listeners->size(); i < e; ++i) { EventListener* el = (EventListener*)listeners->elementAt(i); notifyListener(*el); } } } U_NAMESPACE_END /* UCONFIG_NO_SERVICE */ #endif