X-Git-Url: http://git.argeo.org/?a=blobdiff_plain;f=org.argeo.jcr.ui.explorer%2Fsrc%2Forg%2Fargeo%2Fjcr%2Fui%2Fexplorer%2Fproviders%2FFullVersioningTreeContentProvider.java;fp=org.argeo.jcr.ui.explorer%2Fsrc%2Forg%2Fargeo%2Fjcr%2Fui%2Fexplorer%2Fproviders%2FFullVersioningTreeContentProvider.java;h=736a5aa2fe28603541f2827530647013abe1f8e0;hb=d33e8191813f561cee96fbbbd3f74737070140d0;hp=0000000000000000000000000000000000000000;hpb=959ea5e8b3cc27eaf6cb31c37d7fc28f2719f6f3;p=lgpl%2Fargeo-commons.git

diff --git a/org.argeo.jcr.ui.explorer/src/org/argeo/jcr/ui/explorer/providers/FullVersioningTreeContentProvider.java b/org.argeo.jcr.ui.explorer/src/org/argeo/jcr/ui/explorer/providers/FullVersioningTreeContentProvider.java
new file mode 100644
index 000000000..736a5aa2f
--- /dev/null
+++ b/org.argeo.jcr.ui.explorer/src/org/argeo/jcr/ui/explorer/providers/FullVersioningTreeContentProvider.java
@@ -0,0 +1,115 @@
+/*
+ * Copyright (C) 2007-2012 Argeo GmbH
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *         http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.argeo.jcr.ui.explorer.providers;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import javax.jcr.Node;
+import javax.jcr.RepositoryException;
+import javax.jcr.nodetype.NodeType;
+import javax.jcr.version.Version;
+import javax.jcr.version.VersionHistory;
+import javax.jcr.version.VersionIterator;
+import javax.jcr.version.VersionManager;
+
+import org.argeo.ArgeoException;
+import org.eclipse.jface.viewers.ITreeContentProvider;
+import org.eclipse.jface.viewers.Viewer;
+
+/**
+ * Implementation of the {@code ITreeContentProvider} in order to display some
+ * version informations of a JCR full versionable node in a tree like structure
+ * 
+ */
+public class FullVersioningTreeContentProvider implements ITreeContentProvider {
+	// private Node rootNode;
+	// private ItemComparator itemComparator = new ItemComparator();
+
+	/**
+	 * Sends back the first level of the Tree. input element must be a single
+	 * node object
+	 */
+	public Object[] getElements(Object inputElement) {
+		try {
+			Node rootNode = (Node) inputElement;
+			String curPath = rootNode.getPath();
+			VersionManager vm = rootNode.getSession().getWorkspace()
+					.getVersionManager();
+
+			VersionHistory vh = vm.getVersionHistory(curPath);
+			List<Version> result = new ArrayList<Version>();
+			VersionIterator vi = vh.getAllLinearVersions();
+
+			while (vi.hasNext()) {
+				result.add(vi.nextVersion());
+			}
+			return result.toArray();
+		} catch (RepositoryException re) {
+			throw new ArgeoException(
+					"Unexpected error while getting version elements", re);
+		}
+	}
+
+	public Object[] getChildren(Object parentElement) {
+		try {
+			if (parentElement instanceof Version) {
+				List<Node> tmp = new ArrayList<Node>();
+				tmp.add(((Version) parentElement).getFrozenNode());
+				return tmp.toArray();
+			}
+		} catch (RepositoryException re) {
+			throw new ArgeoException("Unexpected error while getting child "
+					+ "node for version element", re);
+		}
+		return null;
+	}
+
+	public Object getParent(Object element) {
+		try {
+			// this will not work in a simpleVersionning environment, parent is
+			// not a node.
+			if (element instanceof Node
+					&& ((Node) element).isNodeType(NodeType.NT_FROZEN_NODE)) {
+				Node node = (Node) element;
+				return node.getParent();
+			} else
+				return null;
+		} catch (RepositoryException e) {
+			return null;
+		}
+	}
+
+	public boolean hasChildren(Object element) {
+		try {
+			if (element instanceof Version)
+				return true;
+			else if (element instanceof Node)
+				return ((Node) element).hasNodes();
+			else
+				return false;
+		} catch (RepositoryException e) {
+			throw new ArgeoException("Cannot check children of " + element, e);
+		}
+	}
+
+	public void dispose() {
+	}
+
+	public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
+	}
+
+}