--- /dev/null
+/*
+ * Copyright (C) 2007-2012 Argeo GmbH
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.argeo.eclipse.ui.workbench.commands;
+
+import java.util.Iterator;
+
+import javax.jcr.Node;
+import javax.jcr.RepositoryException;
+
+import org.argeo.eclipse.ui.EclipseUiException;
+import org.argeo.eclipse.ui.TreeParent;
+import org.argeo.eclipse.ui.dialogs.ErrorFeedback;
+import org.argeo.eclipse.ui.workbench.internal.jcr.model.SingleJcrNodeElem;
+import org.argeo.eclipse.ui.workbench.internal.jcr.model.WorkspaceElem;
+import org.argeo.eclipse.ui.workbench.jcr.JcrBrowserView;
+import org.eclipse.core.commands.AbstractHandler;
+import org.eclipse.core.commands.ExecutionEvent;
+import org.eclipse.core.commands.ExecutionException;
+import org.eclipse.jface.dialogs.MessageDialog;
+import org.eclipse.jface.viewers.ISelection;
+import org.eclipse.jface.viewers.IStructuredSelection;
+import org.eclipse.ui.handlers.HandlerUtil;
+
+/**
+ * Delete the selected nodes: both in the JCR repository and in the UI view.
+ * Warning no check is done, except implementation dependent native checks,
+ * handle with care.
+ *
+ * This handler is still 'hard linked' to a GenericJcrBrowser view to enable
+ * correct tree refresh when a node is added. This must be corrected in future
+ * versions.
+ */
+public class DeleteNodes extends AbstractHandler {
+ public Object execute(ExecutionEvent event) throws ExecutionException {
+ ISelection selection = HandlerUtil.getActiveWorkbenchWindow(event)
+ .getActivePage().getSelection();
+ if (selection == null || !(selection instanceof IStructuredSelection))
+ return null;
+
+ JcrBrowserView view = (JcrBrowserView) HandlerUtil
+ .getActiveWorkbenchWindow(event).getActivePage()
+ .findView(HandlerUtil.getActivePartId(event));
+
+ // confirmation
+ StringBuffer buf = new StringBuffer("");
+ Iterator<?> lst = ((IStructuredSelection) selection).iterator();
+ while (lst.hasNext()) {
+ SingleJcrNodeElem sjn = ((SingleJcrNodeElem) lst.next());
+ buf.append(sjn.getName()).append(' ');
+ }
+ Boolean ok = MessageDialog.openConfirm(
+ HandlerUtil.getActiveShell(event), "Confirm deletion",
+ "Do you want to delete " + buf + "?");
+
+ // operation
+ if (ok) {
+ Iterator<?> it = ((IStructuredSelection) selection).iterator();
+ Object obj = null;
+ SingleJcrNodeElem ancestor = null;
+ WorkspaceElem rootAncestor = null;
+ try {
+ while (it.hasNext()) {
+ obj = it.next();
+ if (obj instanceof SingleJcrNodeElem) {
+ // Cache objects
+ SingleJcrNodeElem sjn = (SingleJcrNodeElem) obj;
+ TreeParent tp = (TreeParent) sjn.getParent();
+ Node node = sjn.getNode();
+
+ // Jcr Remove
+ node.remove();
+ node.getSession().save();
+ // UI remove
+ tp.removeChild(sjn);
+
+ // Check if the parent is the root node
+ if (tp instanceof WorkspaceElem)
+ rootAncestor = (WorkspaceElem) tp;
+ else
+ ancestor = getOlder(ancestor, (SingleJcrNodeElem) tp);
+ }
+ }
+ if (rootAncestor != null)
+ view.nodeRemoved(rootAncestor);
+ else if (ancestor != null)
+ view.nodeRemoved(ancestor);
+ } catch (Exception e) {
+ ErrorFeedback.show("Cannot delete selected node ", e);
+ }
+ }
+ return null;
+ }
+
+ private SingleJcrNodeElem getOlder(SingleJcrNodeElem A, SingleJcrNodeElem B) {
+ try {
+ if (A == null)
+ return B == null ? null : B;
+ // Todo enhanced this method
+ else
+ return A.getNode().getDepth() <= B.getNode().getDepth() ? A : B;
+ } catch (RepositoryException re) {
+ throw new EclipseUiException("Cannot find ancestor", re);
+ }
+ }
+}