jcr/org.argeo.cms.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 @FunctionalInterface
  15 public interface CmsUiProvider extends SwtUiProvider {
  16         /**
  17          * Initialises a user interface.
  18          *
  19          * @param parent  the parent composite
  20          * @param context a context node (holding the JCR underlying session), or null
  21          */
  22         Control createUi(Composite parent, Node context) throws RepositoryException;
  23
  24         default Control createUiPart(Composite parent, Node context) {
  25                 try {
  26                         return createUi(parent, context);
  27                 } catch (RepositoryException e) {
  28                         throw new JcrException("Cannot create UI for context " + context, e);
  29                 }
  30         }
  31
  32         @Override
  33         default Control createUiPart(Composite parent, Content context) {
  34                 if (context == null)
  35                         return createUiPart(parent, (Node) null);
  36                 if (context instanceof JcrContent) {
  37                         Node node = ((JcrContent) context).getJcrNode();
  38                         return createUiPart(parent, node);
  39                 } else {
  40                         throw new IllegalArgumentException("Content " + context + " is not compatible with JCR");
  41                 }
  42         }
  43
  44 }