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SLC UI building (except Dist)
[gpl/argeo-slc.git] / org.argeo.slc.client.ui / src / org / argeo / slc / client / ui / commands / DeleteItems.java
diff --git a/org.argeo.slc.client.ui/src/org/argeo/slc/client/ui/commands/DeleteItems.java b/org.argeo.slc.client.ui/src/org/argeo/slc/client/ui/commands/DeleteItems.java
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+/*\r
+ * Copyright (C) 2007-2012 Argeo GmbH\r
+ *\r
+ * Licensed under the Apache License, Version 2.0 (the "License");\r
+ * you may not use this file except in compliance with the License.\r
+ * You may obtain a copy of the License at\r
+ *\r
+ *         http://www.apache.org/licenses/LICENSE-2.0\r
+ *\r
+ * Unless required by applicable law or agreed to in writing, software\r
+ * distributed under the License is distributed on an "AS IS" BASIS,\r
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r
+ * See the License for the specific language governing permissions and\r
+ * limitations under the License.\r
+ */\r
+package org.argeo.slc.client.ui.commands;\r
+\r
+import java.util.HashMap;\r
+import java.util.Iterator;\r
+import java.util.Map;\r
+\r
+import javax.jcr.Node;\r
+import javax.jcr.RepositoryException;\r
+import javax.jcr.Session;\r
+\r
+import org.argeo.slc.SlcException;\r
+import org.argeo.slc.client.ui.ClientUiPlugin;\r
+import org.argeo.slc.client.ui.model.ResultFolder;\r
+import org.argeo.slc.client.ui.model.ResultParent;\r
+import org.argeo.slc.client.ui.model.ResultParentUtils;\r
+import org.argeo.slc.client.ui.model.SingleResultNode;\r
+import org.eclipse.core.commands.AbstractHandler;\r
+import org.eclipse.core.commands.ExecutionEvent;\r
+import org.eclipse.core.commands.ExecutionException;\r
+import org.eclipse.core.runtime.IProgressMonitor;\r
+import org.eclipse.core.runtime.IStatus;\r
+import org.eclipse.core.runtime.Status;\r
+import org.eclipse.core.runtime.jobs.Job;\r
+import org.eclipse.jface.dialogs.MessageDialog;\r
+import org.eclipse.jface.resource.ImageDescriptor;\r
+import org.eclipse.jface.viewers.ISelection;\r
+import org.eclipse.jface.viewers.IStructuredSelection;\r
+import org.eclipse.ui.handlers.HandlerUtil;\r
+\r
+/** Deletes one or many results */\r
+public class DeleteItems extends AbstractHandler {\r
+       public final static String ID = ClientUiPlugin.ID + ".deleteItems";\r
+       public final static ImageDescriptor DEFAULT_IMG_DESCRIPTOR = ClientUiPlugin\r
+                       .getImageDescriptor("icons/removeAll.png");\r
+       public final static String DEFAULT_LABEL = "Delete selected item(s)";\r
+\r
+       public Object execute(final ExecutionEvent event) throws ExecutionException {\r
+               final ISelection selection = HandlerUtil\r
+                               .getActiveWorkbenchWindow(event).getActivePage().getSelection();\r
+\r
+               // confirmation\r
+               StringBuilder buf = new StringBuilder("");\r
+               Iterator<?> lst = ((IStructuredSelection) selection).iterator();\r
+               while (lst.hasNext()) {\r
+                       Object obj = lst.next();\r
+                       if (obj instanceof ResultParent) {\r
+                               ResultParent rp = ((ResultParent) obj);\r
+                               buf.append(rp.getName()).append(", ");\r
+                       }\r
+               }\r
+\r
+               String msg = "Nothing to delete";\r
+               // remove last separator\r
+               if (buf.lastIndexOf(", ") > -1) {\r
+                       msg = "Do you want to delete following objects (and their children): "\r
+                                       + buf.substring(0, buf.lastIndexOf(", ")) + "?";\r
+               }\r
+               Boolean ok = MessageDialog.openConfirm(\r
+                               HandlerUtil.getActiveShell(event), "Confirm deletion", msg);\r
+\r
+               if (!ok)\r
+                       return null;\r
+\r
+               Job job = new Job("Delete results") {\r
+                       @Override\r
+                       protected IStatus run(IProgressMonitor monitor) {\r
+                               if (selection != null\r
+                                               && selection instanceof IStructuredSelection) {\r
+                                       Map<String, Node> nodes = new HashMap<String, Node>();\r
+                                       Iterator<?> it = ((IStructuredSelection) selection)\r
+                                                       .iterator();\r
+                                       Object obj = null;\r
+                                       try {\r
+\r
+                                               while (it.hasNext()) {\r
+                                                       obj = it.next();\r
+                                                       if (obj instanceof ResultFolder) {\r
+                                                               Node node = ((ResultFolder) obj).getNode();\r
+                                                               nodes.put(node.getPath(), node);\r
+                                                       } else if (obj instanceof SingleResultNode) {\r
+                                                               Node node = ((SingleResultNode) obj).getNode();\r
+                                                               nodes.put(node.getPath(), node);\r
+                                                       }\r
+                                               }\r
+                                               if (!nodes.isEmpty()) {\r
+                                                       Session session = null;\r
+                                                       monitor.beginTask("Delete results", nodes.size());\r
+                                                       for (String path : nodes.keySet()) {\r
+                                                               if (session == null)\r
+                                                                       session = nodes.get(path).getSession();\r
+\r
+                                                               // check if the item has not already been\r
+                                                               // deleted while deleting one of its ancestor\r
+                                                               if (session.itemExists(path)) {\r
+                                                                       Node parent = nodes.get(path).getParent();\r
+                                                                       nodes.get(path).remove();\r
+                                                                       ResultParentUtils.updatePassedStatus(\r
+                                                                                       parent, true);\r
+                                                               }\r
+                                                               monitor.worked(1);\r
+                                                       }\r
+                                                       session.save();\r
+                                               }\r
+\r
+                                       } catch (RepositoryException e) {\r
+                                               throw new SlcException(\r
+                                                               "Unexpected error while deleteting node(s)", e);\r
+                                       }\r
+                                       monitor.done();\r
+                               }\r
+                               return Status.OK_STATUS;\r
+                       }\r
+\r
+               };\r
+               job.setUser(true);\r
+               job.schedule();\r
+               return null;\r
+       }\r
+}
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