| /******************************************************************************* |
| * Copyright (c) 2020 Torbjörn Svensson and others. |
| * |
| * This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License 2.0 |
| * which accompanies this distribution, and is available at |
| * https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| * Contributors: |
| * Torbjörn Svensson - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.debug.internal.ui.launchConfigurations; |
| |
| import java.util.ArrayList; |
| import java.util.HashMap; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Map.Entry; |
| |
| import org.eclipse.core.resources.IFile; |
| import org.eclipse.core.runtime.IPath; |
| import org.eclipse.debug.core.ILaunchConfiguration; |
| import org.eclipse.jface.viewers.Viewer; |
| import org.eclipse.jface.viewers.ViewerFilter; |
| |
| /** |
| * Filters out the instance of ILaunchCOnfiguration where the, possibly nested, |
| * launch configuration files are stored. If the launch configuration is local, |
| * it's simply returned. |
| */ |
| public class UniqueLaunchConfigurationFileFilter extends ViewerFilter { |
| @Override |
| public Object[] filter(Viewer viewer, Object parent, Object[] elements) { |
| int size = elements.length; |
| if (size == 0) { |
| return elements; |
| } |
| |
| List<Object> filteredElements = new ArrayList<>(size); |
| |
| Map<String, List<ILaunchConfiguration>> configPathMap = new HashMap<>(); |
| for (Object element : elements) { |
| if (element instanceof ILaunchConfiguration) { |
| ILaunchConfiguration config = (ILaunchConfiguration) element; |
| |
| String path = toLaunchFileLocation(config); |
| if (!configPathMap.containsKey(path)) { |
| configPathMap.put(path, new ArrayList<>()); |
| } |
| configPathMap.get(path).add(config); |
| } else { |
| filteredElements.add(element); |
| } |
| } |
| |
| for (Entry<String, List<ILaunchConfiguration>> entry : configPathMap.entrySet()) { |
| List<ILaunchConfiguration> configsWithSamePath = entry.getValue(); |
| if (entry.getKey() == null) { |
| // Local configurations ends up here, add them without further filter |
| filteredElements.addAll(configsWithSamePath); |
| } else if (configsWithSamePath.size() == 1) { |
| // Only one configuration, add it |
| filteredElements.add(configsWithSamePath.get(0)); |
| } else if (configsWithSamePath.size() > 1) { |
| // More than one config with same path. |
| // Order them with the shortest project relative path first |
| configsWithSamePath.sort((o1, o2) -> { |
| IPath path1 = o1.getFile().getProjectRelativePath(); |
| IPath path2 = o2.getFile().getProjectRelativePath(); |
| return Integer.compare(path1.segmentCount(), path2.segmentCount()); |
| }); |
| // Use the configuration with the shortest path. |
| // The other configurations in the list are "identical" but with |
| // the container set to one of the parent project(s) in the |
| // workspace hierarchy. |
| filteredElements.add(configsWithSamePath.get(0)); |
| } |
| } |
| |
| return filteredElements.toArray(); |
| } |
| |
| private String toLaunchFileLocation(ILaunchConfiguration config) { |
| if (!config.isLocal()) { |
| IFile file = config.getFile(); |
| if (file != null) { |
| IPath path = file.getLocation(); |
| if (path != null) { |
| return path.toOSString(); |
| } |
| } |
| } |
| return null; |
| } |
| |
| @Override |
| public boolean select(Viewer viewer, Object parentElement, Object element) { |
| return true; |
| } |
| } |