| /******************************************************************************* |
| * Copyright (c) 2000, 2007 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.debug.internal.core.sourcelookup; |
| |
| import org.eclipse.core.runtime.CoreException; |
| import org.eclipse.core.runtime.IConfigurationElement; |
| import org.eclipse.core.runtime.IProgressMonitor; |
| import org.eclipse.debug.core.DebugPlugin; |
| import org.eclipse.debug.core.ILaunchConfiguration; |
| import org.eclipse.debug.core.sourcelookup.ISourceContainer; |
| import org.eclipse.debug.core.sourcelookup.ISourcePathComputer; |
| import org.eclipse.debug.core.sourcelookup.ISourcePathComputerDelegate; |
| import org.eclipse.debug.internal.core.IConfigurationElementConstants; |
| |
| /** |
| * Proxy to contributed source path computer extension. |
| * |
| * @see IConfigurationElementConstants |
| */ |
| public class SourcePathComputer implements ISourcePathComputer { |
| |
| // lazily instantiated delegate |
| private ISourcePathComputerDelegate fDelegate = null; |
| |
| // extension definition |
| private IConfigurationElement fElement = null; |
| |
| /** |
| * Constructs a source path computer on the given extension. |
| * |
| * @param element extension definition |
| */ |
| public SourcePathComputer(IConfigurationElement element) { |
| fElement = element; |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.debug.core.sourcelookup.ISourcePathComputer#getId() |
| */ |
| public String getId() { |
| return fElement.getAttribute(IConfigurationElementConstants.ID); |
| } |
| |
| /** |
| * Lazily instantiates and returns the underlying source container type. |
| * |
| * @exception CoreException if unable to instantiate |
| */ |
| private ISourcePathComputerDelegate getDelegate() throws CoreException { |
| if (fDelegate == null) { |
| fDelegate = (ISourcePathComputerDelegate) fElement.createExecutableExtension(IConfigurationElementConstants.CLASS); |
| } |
| return fDelegate; |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.debug.core.sourcelookup.ISourcePathComputerDelegate#computeSourceContainers(org.eclipse.debug.core.ILaunchConfiguration, org.eclipse.core.runtime.IProgressMonitor) |
| */ |
| public ISourceContainer[] computeSourceContainers(ILaunchConfiguration configuration, IProgressMonitor monitor) { |
| try { |
| return getDelegate().computeSourceContainers(configuration, monitor); |
| } catch (CoreException e) { |
| DebugPlugin.log(e); |
| } |
| return new ISourceContainer[0]; |
| } |
| } |