Introduce JCR versioning Eclipse utilities.

diff --git a/org.argeo.eclipse.ui/src/org/argeo/eclipse/ui/jcr/VersionColumnLabelProvider.java b/org.argeo.eclipse.ui/src/org/argeo/eclipse/ui/jcr/VersionColumnLabelProvider.java
new file mode 100644 (file)
index 0000000..1ce3154
--- /dev/null
+++ b/org.argeo.eclipse.ui/src/org/argeo/eclipse/ui/jcr/VersionColumnLabelProvider.java
@@ -0,0 +1,80 @@
+package org.argeo.eclipse.ui.jcr;
+
+import javax.jcr.Node;
+import javax.jcr.Property;
+import javax.jcr.RepositoryException;
+import javax.jcr.version.Version;
+
+import org.eclipse.jface.viewers.ColumnLabelProvider;
+import org.eclipse.swt.graphics.Image;
+
+/** Simplifies writing JCR-based column label provider. */
+public class VersionColumnLabelProvider extends ColumnLabelProvider {
+       private static final long serialVersionUID = -6117690082313161159L;
+
+       protected String getVersionText(Version version) throws RepositoryException {
+               return super.getText(version);
+       }
+
+       protected String getVersionToolTipText(Version version) throws RepositoryException {
+               return super.getToolTipText(version);
+       }
+
+       protected Image getVersionImage(Version version) throws RepositoryException {
+               return super.getImage(version);
+       }
+
+       protected String getUserName(Version version) throws RepositoryException {
+               Node node = version.getFrozenNode();
+               if(node.hasProperty(Property.JCR_LAST_MODIFIED_BY))
+                       return node.getProperty(Property.JCR_LAST_MODIFIED_BY).getString();
+               if(node.hasProperty(Property.JCR_CREATED_BY))
+                       return node.getProperty(Property.JCR_CREATED_BY).getString();
+               return null;
+       }
+       
+//     protected String getActivityTitle(Version version) throws RepositoryException {
+//             Node activity = getActivity(version);
+//             if (activity == null)
+//                     return null;
+//             if (activity.hasProperty("jcr:activityTitle"))
+//                     return activity.getProperty("jcr:activityTitle").getString();
+//             else
+//                     return activity.getName();
+//     }
+//
+//     protected Node getActivity(Version version) throws RepositoryException {
+//             if (version.hasProperty(Property.JCR_ACTIVITY)) {
+//                     return version.getProperty(Property.JCR_ACTIVITY).getNode();
+//             } else
+//                     return null;
+//     }
+
+       @Override
+       public String getText(Object element) {
+               try {
+                       return getVersionText((Version) element);
+               } catch (RepositoryException e) {
+                       throw new RuntimeException("Runtime repository exception when accessing " + element, e);
+               }
+       }
+
+       @Override
+       public Image getImage(Object element) {
+               try {
+                       return getVersionImage((Version) element);
+               } catch (RepositoryException e) {
+                       throw new RuntimeException("Runtime repository exception when accessing " + element, e);
+               }
+       }
+
+       @Override
+       public String getToolTipText(Object element) {
+               try {
+                       return getVersionToolTipText((Version) element);
+               } catch (RepositoryException e) {
+                       throw new RuntimeException("Runtime repository exception when accessing " + element, e);
+               }
+       }
+
+}

diff --git a/org.argeo.eclipse.ui/src/org/argeo/eclipse/ui/jcr/VersionHistoryContentProvider.java b/org.argeo.eclipse.ui/src/org/argeo/eclipse/ui/jcr/VersionHistoryContentProvider.java
new file mode 100644 (file)
index 0000000..0ff7dce
--- /dev/null
+++ b/org.argeo.eclipse.ui/src/org/argeo/eclipse/ui/jcr/VersionHistoryContentProvider.java
@@ -0,0 +1,42 @@
+package org.argeo.eclipse.ui.jcr;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+
+import javax.jcr.RepositoryException;
+import javax.jcr.version.Version;
+import javax.jcr.version.VersionHistory;
+import javax.jcr.version.VersionIterator;
+
+import org.eclipse.jface.viewers.IStructuredContentProvider;
+import org.eclipse.jface.viewers.Viewer;
+
+/** Content provider based on a {@link VersionHistory}. */
+public class VersionHistoryContentProvider implements IStructuredContentProvider {
+       private static final long serialVersionUID = -4921107883428887012L;
+
+       @Override
+       public void dispose() {
+       }
+
+       @Override
+       public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
+       }
+
+       @Override
+       public Object[] getElements(Object inputElement) {
+               try {
+                       VersionHistory versionHistory = (VersionHistory) inputElement;
+                       List<Version> lst = new ArrayList<>();
+                       VersionIterator vit = versionHistory.getAllLinearVersions();
+                       while (vit.hasNext())
+                               lst.add(vit.nextVersion());
+                       Collections.reverse(lst);
+                       return lst.toArray();
+               } catch (RepositoryException e) {
+                       throw new IllegalStateException("Cannot list versions", e);
+               }
+       }
+
+}