001    /*
002      GRANITE DATA SERVICES
003      Copyright (C) 2007-2010 ADEQUATE SYSTEMS SARL
004    
005      This file is part of Granite Data Services.
006    
007      Granite Data Services is free software; you can redistribute it and/or modify
008      it under the terms of the GNU Library General Public License as published by
009      the Free Software Foundation; either version 2 of the License, or (at your
010      option) any later version.
011    
012      Granite Data Services is distributed in the hope that it will be useful, but
013      WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
014      FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public License
015      for more details.
016    
017      You should have received a copy of the GNU Library General Public License
018      along with this library; if not, see <http://www.gnu.org/licenses/>.
019    */
020    
021    package org.granite.builder.ui;
022    
023    import java.util.Collections;
024    import java.util.List;
025    
026    import org.eclipse.core.resources.IFolder;
027    import org.eclipse.core.resources.IProject;
028    import org.eclipse.core.runtime.CoreException;
029    import org.eclipse.core.runtime.IPath;
030    import org.eclipse.jdt.core.IJavaProject;
031    import org.eclipse.jface.viewers.Viewer;
032    import org.eclipse.jface.viewers.ViewerFilter;
033    import org.granite.builder.util.ProjectUtil;
034    
035    /**
036     * @author Franck WOLFF
037     */
038    public class JavaFoldersViewerFilter extends ViewerFilter {
039    
040            private final IJavaProject project;
041            private final List<IPath> sourceFolderPaths;
042            
043            public JavaFoldersViewerFilter(IJavaProject project) {
044                    this.project = project;
045                    this.sourceFolderPaths = getSourceFolders(project);
046            }
047            
048            private static List<IPath> getSourceFolders(IJavaProject project) {
049                    try {
050                            return ProjectUtil.getSourceFolders(project);
051                    } catch (CoreException e) {
052                            return Collections.emptyList();
053                    }
054            }
055    
056            @Override
057            public boolean select(Viewer viewer, Object parentElement, Object element) {
058                    if (IProject.class.isInstance(element) && element.equals(project.getProject()))
059                            return true;
060                    if (IFolder.class.isInstance(element)) {
061                            IPath path = ((IFolder)element).getFullPath();
062                            for (IPath sPath : sourceFolderPaths) {
063                                    if (path.equals(sPath) || path.isPrefixOf(sPath))
064                                            return true;
065                            }
066                    }
067                    return false;
068            }
069    }