org.argeo.eclipse.ui.workbench/src/org/argeo/eclipse/ui/workbench/jcr/internal/parts/ChildNodesPage.java

   1 /*
   2  * Copyright (C) 2007-2012 Argeo GmbH
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  *         http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16 package org.argeo.eclipse.ui.workbench.jcr.internal.parts;
  17
  18 import javax.jcr.Node;
  19
  20 import org.argeo.ArgeoException;
  21 import org.argeo.eclipse.ui.EclipseUiUtils;
  22 import org.argeo.eclipse.ui.workbench.WorkbenchUiPlugin;
  23 import org.argeo.eclipse.ui.workbench.jcr.DefaultNodeEditor;
  24 import org.argeo.eclipse.ui.workbench.jcr.internal.NodeLabelProvider;
  25 import org.argeo.eclipse.ui.workbench.jcr.internal.SingleNodeAsTreeContentProvider;
  26 import org.eclipse.jface.viewers.DoubleClickEvent;
  27 import org.eclipse.jface.viewers.IDoubleClickListener;
  28 import org.eclipse.jface.viewers.IStructuredSelection;
  29 import org.eclipse.jface.viewers.ITreeContentProvider;
  30 import org.eclipse.jface.viewers.TreeViewer;
  31 import org.eclipse.swt.SWT;
  32 import org.eclipse.swt.layout.GridLayout;
  33 import org.eclipse.swt.widgets.Composite;
  34 import org.eclipse.swt.widgets.Tree;
  35 import org.eclipse.ui.PartInitException;
  36 import org.eclipse.ui.forms.IManagedForm;
  37 import org.eclipse.ui.forms.editor.FormEditor;
  38 import org.eclipse.ui.forms.editor.FormPage;
  39 import org.eclipse.ui.forms.widgets.ScrolledForm;
  40
  41 /**
  42  * List all childs of the current node and brings some browsing capabilities
  43  * accross the repository
  44  */
  45 public class ChildNodesPage extends FormPage {
  46         // private final static Log log = LogFactory.getLog(ChildNodesPage.class);
  47
  48         // business objects
  49         private Node currentNode;
  50
  51         // this page UI components
  52         private SingleNodeAsTreeContentProvider nodeContentProvider;
  53         private TreeViewer nodesViewer;
  54
  55         public ChildNodesPage(FormEditor editor, String title, Node currentNode) {
  56                 super(editor, "ChildNodesPage", title);
  57                 this.currentNode = currentNode;
  58         }
  59
  60         protected void createFormContent(IManagedForm managedForm) {
  61                 try {
  62                         ScrolledForm form = managedForm.getForm();
  63                         form.setText(WorkbenchUiPlugin.getMessage("childNodesPageTitle"));
  64                         Composite body = form.getBody();
  65                         GridLayout twt = new GridLayout(1, false);
  66                         twt.marginWidth = twt.marginHeight = 5;
  67                         body.setLayout(twt);
  68                         if (!currentNode.hasNodes()) {
  69                                 managedForm.getToolkit().createLabel(body,
  70                                                 WorkbenchUiPlugin.getMessage("warningNoChildNode"));
  71                         } else {
  72                                 nodeContentProvider = new SingleNodeAsTreeContentProvider();
  73                                 nodesViewer = createNodeViewer(body, nodeContentProvider);
  74                                 nodesViewer.setInput(currentNode);
  75                         }
  76                 } catch (Exception e) {
  77                         throw new ArgeoException(
  78                                         "Unexpected error while creating child node page", e);
  79                 }
  80         }
  81
  82         protected TreeViewer createNodeViewer(Composite parent,
  83                         final ITreeContentProvider nodeContentProvider) {
  84
  85                 final TreeViewer tmpNodeViewer = new TreeViewer(parent, SWT.BORDER);
  86                 Tree tree = tmpNodeViewer.getTree();
  87                 tree.setLinesVisible(true);
  88                 tmpNodeViewer.getTree().setLayoutData(EclipseUiUtils.fillAll());
  89                 tmpNodeViewer.setContentProvider(nodeContentProvider);
  90                 tmpNodeViewer.setLabelProvider(new NodeLabelProvider());
  91                 tmpNodeViewer.addDoubleClickListener(new DClickListener());
  92                 return tmpNodeViewer;
  93         }
  94
  95         public class DClickListener implements IDoubleClickListener {
  96
  97                 public void doubleClick(DoubleClickEvent event) {
  98                         if (event.getSelection() == null || event.getSelection().isEmpty())
  99                                 return;
 100                         Object obj = ((IStructuredSelection) event.getSelection())
 101                                         .getFirstElement();
 102                         if (obj instanceof Node) {
 103                                 Node node = (Node) obj;
 104                                 try {
 105                                         GenericNodeEditorInput gnei = new GenericNodeEditorInput(
 106                                                         node);
 107                                         WorkbenchUiPlugin.getDefault().getWorkbench()
 108                                                         .getActiveWorkbenchWindow().getActivePage()
 109                                                         .openEditor(gnei, DefaultNodeEditor.ID);
 110                                 } catch (PartInitException pie) {
 111                                         throw new ArgeoException(
 112                                                         "Unexepected exception while opening node editor",
 113                                                         pie);
 114                                 }
 115                         }
 116                 }
 117         }
 118 }