server/plugins/org.argeo.jcr.ui.explorer/src/main/java/org/argeo/jcr/ui/explorer/editors/ChildNodesPage.java

   1 /*
   2  * Copyright (C) 2007-2012 Mathieu Baudier
   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.jcr.ui.explorer.editors;
  17
  18 import javax.jcr.Node;
  19
  20 import org.argeo.ArgeoException;
  21 import org.argeo.jcr.ui.explorer.JcrExplorerPlugin;
  22 import org.argeo.jcr.ui.explorer.browser.NodeLabelProvider;
  23 import org.argeo.jcr.ui.explorer.providers.SingleNodeAsTreeContentProvider;
  24 import org.argeo.jcr.ui.explorer.utils.GenericNodeDoubleClickListener;
  25 import org.eclipse.jface.viewers.ITreeContentProvider;
  26 import org.eclipse.jface.viewers.TreeViewer;
  27 import org.eclipse.swt.SWT;
  28 import org.eclipse.swt.layout.GridData;
  29 import org.eclipse.swt.layout.GridLayout;
  30 import org.eclipse.swt.widgets.Composite;
  31 import org.eclipse.ui.forms.IManagedForm;
  32 import org.eclipse.ui.forms.editor.FormEditor;
  33 import org.eclipse.ui.forms.editor.FormPage;
  34 import org.eclipse.ui.forms.widgets.ScrolledForm;
  35
  36 /**
  37  * List all childs of the current node and brings some browsing capabilities
  38  * accross the repository
  39  */
  40 public class ChildNodesPage extends FormPage {
  41         // private final static Log log = LogFactory.getLog(ChildNodesPage.class);
  42
  43         // business objects
  44         private Node currentNode;
  45
  46         // this page UI components
  47         private SingleNodeAsTreeContentProvider nodeContentProvider;
  48         private TreeViewer nodesViewer;
  49
  50         public ChildNodesPage(FormEditor editor, String title, Node currentNode) {
  51                 super(editor, "ChildNodesPage", title);
  52                 this.currentNode = currentNode;
  53         }
  54
  55         protected void createFormContent(IManagedForm managedForm) {
  56                 try {
  57                         ScrolledForm form = managedForm.getForm();
  58                         form.setText(JcrExplorerPlugin.getMessage("childNodesPageTitle"));
  59                         Composite body = form.getBody();
  60                         GridLayout twt = new GridLayout(1, false);
  61                         twt.marginWidth = twt.marginHeight = 5;
  62                         body.setLayout(twt);
  63                         if (!currentNode.hasNodes()) {
  64                                 managedForm.getToolkit().createLabel(body,
  65                                                 JcrExplorerPlugin.getMessage("warningNoChildNode"));
  66                         } else {
  67
  68                                 nodeContentProvider = new SingleNodeAsTreeContentProvider();
  69                                 nodesViewer = createNodeViewer(body, nodeContentProvider);
  70                                 nodesViewer.setInput(currentNode);
  71                         }
  72                 } catch (Exception e) {
  73                         throw new ArgeoException(
  74                                         "Unexpected error while creating child node page", e);
  75                 }
  76         }
  77
  78         protected TreeViewer createNodeViewer(Composite parent,
  79                         final ITreeContentProvider nodeContentProvider) {
  80
  81                 final TreeViewer tmpNodeViewer = new TreeViewer(parent, SWT.MULTI);
  82
  83                 tmpNodeViewer.getTree().setLayoutData(
  84                                 new GridData(SWT.FILL, SWT.FILL, true, true));
  85
  86                 tmpNodeViewer.setContentProvider(nodeContentProvider);
  87                 tmpNodeViewer.setLabelProvider(new NodeLabelProvider());
  88                 tmpNodeViewer
  89                                 .addDoubleClickListener(new GenericNodeDoubleClickListener(
  90                                                 tmpNodeViewer));
  91                 return tmpNodeViewer;
  92         }
  93 }