swt/org.argeo.cms.jcr.ui/src/org/argeo/cms/ui/CmsUiProvider.java

   1 package org.argeo.cms.ui;
   2
   3 import javax.jcr.Node;
   4 import javax.jcr.RepositoryException;
   5
   6 import org.argeo.api.acr.Content;
   7 import org.argeo.cms.jcr.acr.JcrContent;
   8 import org.argeo.cms.swt.acr.SwtUiProvider;
   9 import org.argeo.jcr.JcrException;
  10 import org.eclipse.swt.widgets.Composite;
  11 import org.eclipse.swt.widgets.Control;
  12
  13 /** Stateless factory building an SWT user interface given a JCR context. */
  14 public interface CmsUiProvider extends SwtUiProvider {
  15         /**
  16          * Initialises a user interface.
  17          *
  18          * @param parent  the parent composite
  19          * @param context a context node (holding the JCR underlying session), or null
  20          */
  21         default Control createUi(Composite parent, Node context) throws RepositoryException {
  22                 // does nothing by default
  23                 return null;
  24         }
  25
  26         default Control createUiPart(Composite parent, Node context) {
  27                 try {
  28                         return createUi(parent, context);
  29                 } catch (RepositoryException e) {
  30                         throw new JcrException("Cannot create UI for context " + context, e);
  31                 }
  32         }
  33
  34         @Override
  35         default Control createUiPart(Composite parent, Content context) {
  36                 if (context == null)
  37                         return createUiPart(parent, (Node) null);
  38                 if (context instanceof JcrContent) {
  39                         Node node = context.adapt(Node.class);
  40                         return createUiPart(parent, node);
  41                 } else {
  42 //                      CmsLog.getLog(CmsUiProvider.class)
  43 //                                      .warn("In " + getClass() + ", content " + context + " is not compatible with JCR.");
  44 //                      return createUiPart(parent, (Node) null);
  45
  46                         throw new IllegalArgumentException(
  47                                         "In " + getClass() + ", content " + context + " is not compatible with JCR");
  48                 }
  49         }
  50
  51 }