/*******************************************************************************
* Copyright (c) 2010 Neil Bartlett.
* 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:
* Neil Bartlett - initial API and implementation
*******************************************************************************/
package org.bndtools.builder;
import java.io.ByteArrayInputStream;
import java.util.Iterator;
import org.bndtools.api.BndtoolsConstants;
import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.IProjectDescription;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IAdaptable;
import org.eclipse.jface.action.IAction;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.ui.IObjectActionDelegate;
import org.eclipse.ui.IWorkbenchPart;
import aQute.bnd.build.Project;
public class ToggleNatureAction implements IObjectActionDelegate {
private ISelection selection;
/*
* (non-Javadoc)
* @see org.eclipse.ui.IActionDelegate#run(org.eclipse.jface.action.IAction)
*/
public void run(IAction action) {
if (selection instanceof IStructuredSelection) {
for (Iterator< ? > it = ((IStructuredSelection) selection).iterator(); it.hasNext();) {
Object element = it.next();
IProject project = null;
if (element instanceof IProject) {
project = (IProject) element;
} else if (element instanceof IAdaptable) {
project = (IProject) ((IAdaptable) element).getAdapter(IProject.class);
}
if (project != null) {
toggleNature(project);
}
}
}
}
/*
* (non-Javadoc)
* @see org.eclipse.ui.IActionDelegate#selectionChanged(org.eclipse.jface.action .IAction,
* org.eclipse.jface.viewers.ISelection)
*/
public void selectionChanged(IAction action, ISelection selection) {
this.selection = selection;
}
/*
* (non-Javadoc)
* @see org.eclipse.ui.IObjectActionDelegate#setActivePart(org.eclipse.jface. action.IAction,
* org.eclipse.ui.IWorkbenchPart)
*/
public void setActivePart(IAction action, IWorkbenchPart targetPart) {}
private static void ensureBndBndExists(IProject project) throws CoreException {
IFile bndfile = project.getFile(Project.BNDFILE);
if (!bndfile.exists())
bndfile.create(new ByteArrayInputStream(new byte[0]), false, null);
}
/**
* Toggles sample nature on a project
*
* @param project
* to have sample nature added or removed
*/
private static void toggleNature(IProject project) {
try {
IProjectDescription description = project.getDescription();
String[] natures = description.getNatureIds();
for (int i = 0; i < natures.length; ++i) {
if (BndtoolsConstants.NATURE_ID.equals(natures[i])) {
// Remove the nature
String[] newNatures = new String[natures.length - 1];
System.arraycopy(natures, 0, newNatures, 0, i);
System.arraycopy(natures, i + 1, newNatures, i, natures.length - i - 1);
description.setNatureIds(newNatures);
project.setDescription(description, null);
return;
}
}
// Add the nature
ensureBndBndExists(project);
String[] newNatures = new String[natures.length + 1];
System.arraycopy(natures, 0, newNatures, 0, natures.length);
newNatures[natures.length] = BndtoolsConstants.NATURE_ID;
description.setNatureIds(newNatures);
project.setDescription(description, null);
} catch (CoreException e) {}
}
}