redocs/org.eclipse.statet.redocs.tex.r.debug/src/org/eclipse/statet/internal/redocs/tex/r/ui/debug/RetargettableActionAdapterFactory.java

/*=============================================================================#
 # Copyright (c) 2010, 2021 Stephan Wahlbrink and others.
 # 
 # This program and the accompanying materials are made available under the
 # terms of the Eclipse Public License 2.0 which is available at
 # https://www.eclipse.org/legal/epl-2.0, or the Apache License, Version 2.0
 # which is available at https://www.apache.org/licenses/LICENSE-2.0.
 # 
 # SPDX-License-Identifier: EPL-2.0 OR Apache-2.0
 # 
 # Contributors:
 #     Stephan Wahlbrink <sw@wahlbrink.eu> - initial API and implementation
 #=============================================================================*/

package org.eclipse.statet.internal.redocs.tex.r.ui.debug;

import org.eclipse.core.runtime.IAdapterFactory;
import org.eclipse.debug.ui.actions.IToggleBreakpointsTarget;


/**
 * Creates adapters for retargettable actions in debug platform.
 * Contributed via <code>org.eclipse.core.runtime.adapters</code> 
 * extension point. 
 */
public class RetargettableActionAdapterFactory implements IAdapterFactory {
	
	
	private static final Class<?>[] ADAPTERS= new Class<?>[] { IToggleBreakpointsTarget.class };
	
	
	private IToggleBreakpointsTarget breakpointAdapter;
	
	
	public RetargettableActionAdapterFactory() {
	}
	
	
	@Override
	public Class<?>[] getAdapterList() {
		return ADAPTERS;
	}
	
	@Override
	@SuppressWarnings("unchecked")
	public <T> T getAdapter(final Object adaptableObject, final Class<T> adapterType) {
		if (adapterType == IToggleBreakpointsTarget.class) {
			synchronized (this) {
				if (this.breakpointAdapter == null) {
					this.breakpointAdapter= new ToggleBreakpointAdapter();
				}
				return (T) this.breakpointAdapter;
			}
		} 
		return null;
	}
	
}