--- /dev/null
+/*******************************************************************************
+ * Copyright (c) 2000, 2011 IBM Corporation and others.
+ * 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:
+ * IBM Corporation - initial API and implementation
+ *******************************************************************************/
+package org.eclipse.jdt.ui.actions;
+
+import java.lang.reflect.InvocationTargetException;
+import java.util.ArrayList;
+import java.util.Iterator;
+import java.util.List;
+
+import org.eclipse.core.runtime.CoreException;
+import org.eclipse.core.runtime.IProgressMonitor;
+import org.eclipse.core.runtime.SubProgressMonitor;
+
+import org.eclipse.core.resources.IResource;
+import org.eclipse.core.resources.IWorkspaceRunnable;
+
+import org.eclipse.jface.viewers.IStructuredSelection;
+
+import org.eclipse.ui.IWorkbenchSite;
+import org.eclipse.ui.PlatformUI;
+
+import org.eclipse.jdt.core.IClasspathEntry;
+import org.eclipse.jdt.core.IPackageFragmentRoot;
+import org.eclipse.jdt.core.JavaModelException;
+
+import org.eclipse.jdt.internal.corext.util.JavaModelUtil;
+
+import org.eclipse.jdt.internal.ui.IJavaHelpContextIds;
+import org.eclipse.jdt.internal.ui.JavaPlugin;
+import org.eclipse.jdt.internal.ui.actions.ActionMessages;
+import org.eclipse.jdt.internal.ui.actions.WorkbenchRunnableAdapter;
+import org.eclipse.jdt.internal.ui.util.ExceptionHandler;
+
+/**
+ * Action to remove package fragment roots from the classpath of its parent
+ * project. Currently, the action is applicable to selections containing
+ * non-external archives (JAR or zip).
+ *
+ * <p>
+ * This class may be instantiated; it is not intended to be subclassed.
+ * </p>
+ *
+ * @since 2.1
+ *
+ * @noextend This class is not intended to be subclassed by clients.
+ */
+public class RemoveFromClasspathAction extends SelectionDispatchAction {
+
+ /**
+ * Creates a new <code>RemoveFromClasspathAction</code>. The action requires
+ * that the selection provided by the site's selection provider is of type
+ * <code> org.eclipse.jface.viewers.IStructuredSelection</code>.
+ *
+ * @param site the site providing context information for this action
+ */
+ public RemoveFromClasspathAction(IWorkbenchSite site) {
+ super(site);
+ setText(ActionMessages.RemoveFromClasspathAction_Remove);
+ setToolTipText(ActionMessages.RemoveFromClasspathAction_tooltip);
+ PlatformUI.getWorkbench().getHelpSystem().setHelp(this, IJavaHelpContextIds.REMOVE_FROM_CLASSPATH_ACTION);
+ }
+
+ /* (non-Javadoc)
+ * Method declared in SelectionDispatchAction
+ */
+ @Override
+ public void selectionChanged(IStructuredSelection selection) {
+ setEnabled(checkEnabled(selection));
+ }
+
+ private static boolean checkEnabled(IStructuredSelection selection) {
+ if (selection.isEmpty())
+ return false;
+ for (Iterator<?> iter= selection.iterator(); iter.hasNext();) {
+ if (! canRemove(iter.next()))
+ return false;
+ }
+ return true;
+ }
+
+ /* (non-Javadoc)
+ * Method declared in SelectionDispatchAction
+ */
+ @Override
+ public void run(final IStructuredSelection selection) {
+ try {
+ PlatformUI.getWorkbench().getActiveWorkbenchWindow().run(true, true, new WorkbenchRunnableAdapter(new IWorkspaceRunnable() {
+ public void run(IProgressMonitor pm) throws CoreException {
+ try{
+ IPackageFragmentRoot[] roots= getRootsToRemove(selection);
+ pm.beginTask(ActionMessages.RemoveFromClasspathAction_Removing, roots.length);
+ for (int i= 0; i < roots.length; i++) {
+ int jCoreFlags= IPackageFragmentRoot.NO_RESOURCE_MODIFICATION | IPackageFragmentRoot.ORIGINATING_PROJECT_CLASSPATH;
+ roots[i].delete(IResource.NONE, jCoreFlags, new SubProgressMonitor(pm, 1));
+ }
+ } finally {
+ pm.done();
+ }
+ }
+ }));
+ } catch (InvocationTargetException e) {
+ ExceptionHandler.handle(e, getShell(),
+ ActionMessages.RemoveFromClasspathAction_exception_dialog_title,
+ ActionMessages.RemoveFromClasspathAction_Problems_occurred);
+ } catch (InterruptedException e) {
+ // canceled
+ }
+ }
+
+ private static IPackageFragmentRoot[] getRootsToRemove(IStructuredSelection selection){
+ List<Object> result= new ArrayList<Object>(selection.size());
+ for (Iterator<?> iter= selection.iterator(); iter.hasNext();) {
+ Object element= iter.next();
+ if (canRemove(element))
+ result.add(element);
+ }
+ return result.toArray(new IPackageFragmentRoot[result.size()]);
+ }
+
+ private static boolean canRemove(Object element){
+ if (! (element instanceof IPackageFragmentRoot))
+ return false;
+ IPackageFragmentRoot root= (IPackageFragmentRoot)element;
+ try {
+ IClasspathEntry cpe= root.getRawClasspathEntry();
+ if (cpe == null || cpe.getEntryKind() == IClasspathEntry.CPE_CONTAINER)
+ return false; // don't want to remove the container if only a child is selected
+ return true;
+ } catch (JavaModelException e) {
+ if (JavaModelUtil.isExceptionToBeLogged(e))
+ JavaPlugin.log(e);
+ }
+ return false;
+ }
+}
+