editors/ChildNodesPage.java

   1 package org.argeo.jcr.ui.explorer.editors;
   2
   3 import javax.jcr.Node;
   4
   5 import org.apache.commons.logging.Log;
   6 import org.apache.commons.logging.LogFactory;
   7 import org.argeo.ArgeoException;
   8 import org.argeo.jcr.ui.explorer.JcrExplorerPlugin;
   9 import org.argeo.jcr.ui.explorer.browser.NodeLabelProvider;
  10 import org.argeo.jcr.ui.explorer.providers.SingleNodeAsTreeContentProvider;
  11 import org.argeo.jcr.ui.explorer.utils.GenericNodeDoubleClickListener;
  12 import org.eclipse.jface.viewers.ITreeContentProvider;
  13 import org.eclipse.jface.viewers.TreeViewer;
  14 import org.eclipse.swt.SWT;
  15 import org.eclipse.swt.layout.GridData;
  16 import org.eclipse.swt.layout.GridLayout;
  17 import org.eclipse.swt.widgets.Composite;
  18 import org.eclipse.ui.forms.IManagedForm;
  19 import org.eclipse.ui.forms.editor.FormEditor;
  20 import org.eclipse.ui.forms.editor.FormPage;
  21 import org.eclipse.ui.forms.widgets.ScrolledForm;
  22
  23 /**
  24  * List all childs of the current node and brings some browsing capabilities
  25  * accross the repository
  26  */
  27 public class ChildNodesPage extends FormPage {
  28         private final static Log log = LogFactory.getLog(ChildNodesPage.class);
  29
  30         // business objects
  31         private Node currentNode;
  32
  33         // this page UI components
  34         private SingleNodeAsTreeContentProvider nodeContentProvider;
  35         private TreeViewer nodesViewer;
  36
  37         public ChildNodesPage(FormEditor editor, String title, Node currentNode) {
  38                 super(editor, "ChildNodesPage", title);
  39                 this.currentNode = currentNode;
  40         }
  41
  42         protected void createFormContent(IManagedForm managedForm) {
  43                 try {
  44                         ScrolledForm form = managedForm.getForm();
  45                         Composite body = form.getBody();
  46                         GridLayout twt = new GridLayout(1, false);
  47                         twt.marginWidth = twt.marginHeight = 0;
  48                         body.setLayout(twt);
  49                         if (!currentNode.hasNodes()) {
  50                                 managedForm.getToolkit().createLabel(body,
  51                                                 JcrExplorerPlugin.getMessage("warningNoChildNode"));
  52                         } else {
  53
  54                                 nodeContentProvider = new SingleNodeAsTreeContentProvider();
  55                                 nodesViewer = createNodeViewer(body, nodeContentProvider);
  56                                 nodesViewer.setInput(currentNode);
  57                         }
  58                 } catch (Exception e) {
  59                         throw new ArgeoException(
  60                                         "Unexpected error while creating child node page", e);
  61                 }
  62         }
  63
  64         protected TreeViewer createNodeViewer(Composite parent,
  65                         final ITreeContentProvider nodeContentProvider) {
  66
  67                 final TreeViewer tmpNodeViewer = new TreeViewer(parent, SWT.MULTI);
  68
  69                 tmpNodeViewer.getTree().setLayoutData(
  70                                 new GridData(SWT.FILL, SWT.FILL, true, true));
  71
  72                 tmpNodeViewer.setContentProvider(nodeContentProvider);
  73                 tmpNodeViewer.setLabelProvider(new NodeLabelProvider());
  74                 tmpNodeViewer
  75                                 .addDoubleClickListener(new GenericNodeDoubleClickListener(
  76                                                 tmpNodeViewer));
  77                 return tmpNodeViewer;
  78         }
  79 }