X-Git-Url: https://git.argeo.org/?a=blobdiff_plain;f=org.argeo.cms.ui%2Fsrc%2Forg%2Fargeo%2Fcms%2Fui%2Fjcr%2FFullVersioningTreeContentProvider.java;fp=org.argeo.cms.ui%2Fsrc%2Forg%2Fargeo%2Fcms%2Fui%2Fjcr%2FFullVersioningTreeContentProvider.java;h=c9fdf567efcc8735a99126e7e1415b670767e8c5;hb=2d5dd10f58c42aab9351c76801c57034cbe87f8e;hp=0000000000000000000000000000000000000000;hpb=b4f8687c665491a6c8a623d8cd7ad7c6f353b838;p=lgpl%2Fargeo-commons.git

diff --git a/org.argeo.cms.ui/src/org/argeo/cms/ui/jcr/FullVersioningTreeContentProvider.java b/org.argeo.cms.ui/src/org/argeo/cms/ui/jcr/FullVersioningTreeContentProvider.java
new file mode 100644
index 000000000..c9fdf567e
--- /dev/null
+++ b/org.argeo.cms.ui/src/org/argeo/cms/ui/jcr/FullVersioningTreeContentProvider.java
@@ -0,0 +1,113 @@
+/*
+ * 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.cms.ui.jcr;
+
+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.eclipse.ui.EclipseUiException;
+import org.eclipse.jface.viewers.ITreeContentProvider;
+import org.eclipse.jface.viewers.Viewer;
+
+/**
+ * Display some version information of a JCR full versionable node in a tree
+ * like structure
+ */
+public class FullVersioningTreeContentProvider implements ITreeContentProvider {
+	private static final long serialVersionUID = 8691772509491211112L;
+
+	/**
+	 * 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 EclipseUiException(
+					"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 EclipseUiException("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 EclipseUiException("Cannot check children of " + element, e);
+		}
+	}
+
+	public void dispose() {
+	}
+
+	public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
+	}
+
+}