/*******************************************************************************
* Copyright (c) 2004, 2005 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.ui.internal.keys;
import org.eclipse.jface.bindings.BindingManager;
import org.eclipse.jface.bindings.ISchemeListener;
import org.eclipse.jface.bindings.SchemeEvent;
import org.eclipse.ui.commands.IKeyConfiguration;
import org.eclipse.ui.commands.IKeyConfigurationListener;
import org.eclipse.ui.commands.KeyConfigurationEvent;
/**
* A wrapper for old-style listeners to be hooked on to new style schemes.
*
* @since 3.1
*/
final class LegacySchemeListenerWrapper implements ISchemeListener {
/**
* The binding manager; never <code>null</code>.
*/
private final BindingManager bindingManager;
/**
* The listener that is being wrapped. This value is never <code>null</code>.
*/
private final IKeyConfigurationListener listener;
/**
* Constructs a new instance of <code>SchemeListenerWrapper</code> with
* the given listener.
*
* @param listener
* The listener to be wrapped; must mot be <code>null</code>.
*/
LegacySchemeListenerWrapper(final IKeyConfigurationListener listener,
final BindingManager bindingManager) {
if (listener == null) {
throw new NullPointerException("Cannot wrap a null listener"); //$NON-NLS-1$
}
if (bindingManager == null) {
throw new NullPointerException(
"Cannot wrap a listener without a binding manager"); //$NON-NLS-1$
}
this.listener = listener;
this.bindingManager = bindingManager;
}
public final boolean equals(final Object object) {
if (object instanceof LegacySchemeListenerWrapper) {
final LegacySchemeListenerWrapper wrapper = (LegacySchemeListenerWrapper) object;
return listener.equals(wrapper.listener);
}
if (object instanceof IKeyConfigurationListener) {
final IKeyConfigurationListener other = (IKeyConfigurationListener) object;
return listener.equals(other);
}
return false;
}
public final int hashCode() {
return listener.hashCode();
}
/*
* (non-Javadoc)
*
* @see org.eclipse.jface.bindings.ISchemeListener#schemeChanged(org.eclipse.jface.bindings.SchemeEvent)
*/
public final void schemeChanged(final SchemeEvent schemeEvent) {
final IKeyConfiguration keyConfiguration = new SchemeLegacyWrapper(
schemeEvent.getScheme(), bindingManager);
final boolean definedChanged = schemeEvent.isDefinedChanged();
final boolean nameChanged = schemeEvent.isNameChanged();
final boolean parentIdChanged = schemeEvent.isParentIdChanged();
listener.keyConfigurationChanged(new KeyConfigurationEvent(
keyConfiguration, false, definedChanged, nameChanged,
parentIdChanged));
}
}