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Diffstat (limited to 'accessibility/workben/org/openoffice/accessibility/misc/AccessibleEventMulticaster.java')
-rw-r--r-- | accessibility/workben/org/openoffice/accessibility/misc/AccessibleEventMulticaster.java | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/accessibility/workben/org/openoffice/accessibility/misc/AccessibleEventMulticaster.java b/accessibility/workben/org/openoffice/accessibility/misc/AccessibleEventMulticaster.java new file mode 100644 index 000000000000..0f56117e1fdf --- /dev/null +++ b/accessibility/workben/org/openoffice/accessibility/misc/AccessibleEventMulticaster.java @@ -0,0 +1,92 @@ +/************************************************************************* + * + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * Copyright 2000, 2010 Oracle and/or its affiliates. + * + * OpenOffice.org - a multi-platform office productivity suite + * + * This file is part of OpenOffice.org. + * + * OpenOffice.org is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License version 3 + * only, as published by the Free Software Foundation. + * + * OpenOffice.org is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Lesser General Public License version 3 for more details + * (a copy is included in the LICENSE file that accompanied this code). + * + * You should have received a copy of the GNU Lesser General Public License + * version 3 along with OpenOffice.org. If not, see + * <http://www.openoffice.org/license.html> + * for a copy of the LGPLv3 License. + * + ************************************************************************/ + +package org.openoffice.accessibility.misc; + +import com.sun.star.lang.EventObject; + +import com.sun.star.accessibility.AccessibleEventObject; +import com.sun.star.accessibility.XAccessibleEventBroadcaster; +import com.sun.star.accessibility.XAccessibleEventListener; + +/** + * + */ +public class AccessibleEventMulticaster implements XAccessibleEventListener { + + private final XAccessibleEventListener a; + private final XAccessibleEventListener b; + + /** Creates a new instance of AccessibleEventMulticaster */ + protected AccessibleEventMulticaster(XAccessibleEventListener a, + XAccessibleEventListener b) { + this.a = a; + this.b = b; + } + + protected XAccessibleEventListener remove(XAccessibleEventListener l) { + if (l == a) + return b; + if (l == b) + return a; + XAccessibleEventListener a2 = remove(a, l); + XAccessibleEventListener b2 = remove(b, l); + if (a2 == a && b2 == b) { + return this; // not found + } + return add(a2, b2); + } + + public void notifyEvent(AccessibleEventObject accessibleEventObject) { + a.notifyEvent(accessibleEventObject); + b.notifyEvent(accessibleEventObject); + } + + public void disposing(EventObject eventObject) { + a.disposing(eventObject); + b.disposing(eventObject); + } + + public static XAccessibleEventListener add(XAccessibleEventListener a, XAccessibleEventListener b) { + if (a == null) + return b; + if (b == null) + return a; + return new AccessibleEventMulticaster(a,b); + } + + public static XAccessibleEventListener remove(XAccessibleEventListener l, XAccessibleEventListener oldl) { + if (l == oldl || l == null) { + return null; + } else if (l instanceof AccessibleEventMulticaster) { + return ((AccessibleEventMulticaster) l).remove(oldl); + } else { + return l; + } + } + +} |