package org.ftlines.metagen.eclipse;
import java.util.Iterator;
import org.eclipse.core.resources.ICommand;
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;
public class ToggleNatureAction implements IObjectActionDelegate {
private ISelection selection;
/*
* (non-Javadoc)
*
* @see org.eclipse.ui.IActionDelegate#run(org.eclipse.jface.action.IAction)
*/
@Override
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)
*/
@Override
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)
*/
@Override
public void setActivePart(IAction action, IWorkbenchPart targetPart) {
}
/**
* Toggles sample nature on a project
*
* @param project
* to have sample nature added or removed
*/
private void toggleNature(IProject project) {
try {
IProjectDescription description = project.getDescription();
String[] natures = description.getNatureIds();
for (int i = 0; i < natures.length; ++i) {
if (Nature.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
String[] newNatures = new String[natures.length + 1];
System.arraycopy(natures, 0, newNatures, 0, natures.length);
newNatures[natures.length] = Nature.NATURE_ID;
description.setNatureIds(newNatures);
project.setDescription(description, null);
// make sure metagen builder is before the java builder
description = project.getDescription();
ICommand[] builders = description.getBuildSpec();
ICommand[] rearrangedBuilders = new ICommand[builders.length];
int pos = 1;
for (int i = 0; i < builders.length; i++) {
ICommand current = builders[i];
if (Builder.BUILDER_ID.equals(current.getBuilderName())) {
rearrangedBuilders[0] = current;
} else {
rearrangedBuilders[pos] = current;
pos++;
}
}
description.setBuildSpec(rearrangedBuilders);
project.setDescription(description, null);
} catch (CoreException e) {
}
}
}