/******************************************************************************* * Copyright ? 2008 Sandro Badame. All Rights Reserved. *  * This software and the accompanying materials is available under the  * Eclipse Public License 1.0 (EPL), which accompanies this distribution, and is * available at http://visualjpf.sourceforge.net/epl-v10.html ******************************************************************************/package com.javapathfinder.vjp.config.editors;import org.eclipse.core.resources.IFile;import org.eclipse.core.resources.IProject;import org.eclipse.core.resources.ResourcesPlugin;import org.eclipse.core.runtime.IPath;import org.eclipse.core.runtime.Path;import org.eclipse.swt.SWT;import org.eclipse.swt.widgets.FileDialog;import org.eclipse.swt.widgets.Shell;/** * This class serves as a wrapper for the FileDialog class since Eclipse * doesn't allow FileDialog to be subclassed. *  * @author Sandro Badame */public class ModePropertyFileDialog{  private FileDialog dialog;    //The project that the config file chosen is saved in  private IProject project = null;    /**   * @param parent the parent shell for this dialog.   */  public ModePropertyFileDialog(Shell parent) {    dialog = new FileDialog(parent, SWT.SAVE);    dialog.setFilterPath(ResourcesPlugin.getWorkspace().getRoot().getLocation().toOSString());  }    /**   * @param parent the parent shell for this dialog   * @param properties the dialog will open with the file associated to this   *                   property selected.   */  public ModePropertyFileDialog(Shell parent, ModePropertyConfiguration properties){    this(parent);    dialog.setFilterPath(properties.getIFile().getLocation().removeLastSegments(1).toOSString());    dialog.setFileName(properties.getIFile().getName());  }    /**   * Gets the file chosen from the dialog. Note that if the file chosen is not   * contained in a poject then bad things can happen with the returned value.   */  public IFile getFile(){    String spath = dialog.open();    if (spath == null) return null;    Path path = new Path(spath);    project = getProjectContainingPath(path);    if (project != null)      return project.getFile(getPathRelativeToPath(project.getLocation(), path));    else      return ResourcesPlugin.getWorkspace().getRoot().getFileForLocation(path);  }    /**   * Returns the project that contains the chosen file   * Null if this was saved outside of any project.   */  public IProject getFileProject(){    return project;  }    private IProject getProjectContainingPath(Path path) {    for( IProject project : ResourcesPlugin.getWorkspace().getRoot().getProjects()){      IPath location = project.getLocation();      if(location.matchingFirstSegments(path)==location.segmentCount())        return project;     }    return null;  }    private IPath getPathRelativeToPath(IPath parent, IPath target){    int matchs = parent.matchingFirstSegments(target);    return target.removeFirstSegments(matchs);  }}