Merge tag 'v2.3.20' into testing

[gpl/argeo-jcr.git] / swt / org.argeo.tool.devops.e4 / src / org / argeo / cms / e4 / jcr / handlers / DeleteNodes.java

diff --git a/swt/org.argeo.tool.devops.e4/src/org/argeo/cms/e4/jcr/handlers/DeleteNodes.java b/swt/org.argeo.tool.devops.e4/src/org/argeo/cms/e4/jcr/handlers/DeleteNodes.java
new file mode 100644 (file)
index 0000000..5df622c
--- /dev/null
+++ b/swt/org.argeo.tool.devops.e4/src/org/argeo/cms/e4/jcr/handlers/DeleteNodes.java
@@ -0,0 +1,95 @@
+package org.argeo.cms.e4.jcr.handlers;
+
+import java.util.List;
+
+import jakarta.inject.Named;
+import javax.jcr.Node;
+import javax.jcr.RepositoryException;
+
+import org.argeo.cms.e4.jcr.JcrBrowserView;
+import org.argeo.cms.ui.jcr.model.SingleJcrNodeElem;
+import org.argeo.cms.ui.jcr.model.WorkspaceElem;
+import org.argeo.cms.ux.widgets.TreeParent;
+import org.argeo.eclipse.ui.EclipseUiException;
+import org.argeo.eclipse.ui.dialogs.ErrorFeedback;
+import org.eclipse.e4.core.di.annotations.Execute;
+import org.eclipse.e4.ui.model.application.ui.basic.MPart;
+import org.eclipse.e4.ui.services.IServiceConstants;
+import org.eclipse.e4.ui.workbench.modeling.ESelectionService;
+import org.eclipse.jface.dialogs.MessageDialog;
+import org.eclipse.swt.widgets.Display;
+
+/**
+ * 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 {
+       @Execute
+       public void execute(@Named(IServiceConstants.ACTIVE_PART) MPart part, ESelectionService selectionService) {
+               List<?> selection = (List<?>) selectionService.getSelection();
+               if (selection == null)
+                       return;
+
+               JcrBrowserView view = (JcrBrowserView) part.getObject();
+
+               // confirmation
+               StringBuffer buf = new StringBuffer("");
+               for (Object o : selection) {
+                       SingleJcrNodeElem sjn = (SingleJcrNodeElem) o;
+                       buf.append(sjn.getName()).append(' ');
+               }
+               Boolean doRemove = MessageDialog.openConfirm(Display.getCurrent().getActiveShell(), "Confirm deletion",
+                               "Do you want to delete " + buf + "?");
+
+               // operation
+               if (doRemove) {
+                       SingleJcrNodeElem ancestor = null;
+                       WorkspaceElem rootAncestor = null;
+                       try {
+                               for (Object obj : selection) {
+                                       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);
+                       }
+               }
+       }
+
+       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);
+               }
+       }
+}