X-Git-Url: http://git.argeo.org/?a=blobdiff_plain;f=org.argeo.jcr.ui.explorer%2Fsrc%2Fmain%2Fjava%2Forg%2Fargeo%2Fjcr%2Fui%2Fexplorer%2Fproviders%2FSingleNodeAsTreeContentProvider.java;fp=org.argeo.jcr.ui.explorer%2Fsrc%2Fmain%2Fjava%2Forg%2Fargeo%2Fjcr%2Fui%2Fexplorer%2Fproviders%2FSingleNodeAsTreeContentProvider.java;h=8c69b6b9c94a0b3e1476ae792f960f5a8c33c321;hb=1df1bf64759d35d3d72b9d96b26b71118fdbe031;hp=0000000000000000000000000000000000000000;hpb=3a3d316af102ba410d1d9e6de349d0c8f7ac044f;p=lgpl%2Fargeo-commons.git

diff --git a/org.argeo.jcr.ui.explorer/src/main/java/org/argeo/jcr/ui/explorer/providers/SingleNodeAsTreeContentProvider.java b/org.argeo.jcr.ui.explorer/src/main/java/org/argeo/jcr/ui/explorer/providers/SingleNodeAsTreeContentProvider.java
new file mode 100644
index 000000000..8c69b6b9c
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+++ b/org.argeo.jcr.ui.explorer/src/main/java/org/argeo/jcr/ui/explorer/providers/SingleNodeAsTreeContentProvider.java
@@ -0,0 +1,106 @@
+/*
+ * 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.Arrays;
+import java.util.List;
+
+import javax.jcr.Node;
+import javax.jcr.NodeIterator;
+import javax.jcr.RepositoryException;
+
+import org.argeo.ArgeoException;
+import org.argeo.eclipse.ui.jcr.utils.JcrItemsComparator;
+import org.eclipse.jface.viewers.ITreeContentProvider;
+import org.eclipse.jface.viewers.Viewer;
+
+/**
+ * Implementation of the {@code ITreeContentProvider} in order to display a
+ * single JCR node and its children in a tree like structure
+ * 
+ */
+public class SingleNodeAsTreeContentProvider implements ITreeContentProvider {
+	// private Node rootNode;
+	private JcrItemsComparator itemComparator = new JcrItemsComparator();
+
+	/**
+	 * 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;
+			List<Node> result = new ArrayList<Node>();
+			NodeIterator ni = rootNode.getNodes();
+			while (ni.hasNext()) {
+				result.add(ni.nextNode());
+			}
+
+			return result.toArray();
+		} catch (RepositoryException re) {
+			throw new ArgeoException(
+					"Unexpected error while getting child nodes for children editor page ",
+					re);
+		}
+	}
+
+	public Object[] getChildren(Object parentElement) {
+		return childrenNodes((Node) parentElement);
+	}
+
+	public Object getParent(Object element) {
+		try {
+			Node node = (Node) element;
+			if (!node.getPath().equals("/"))
+				return node.getParent();
+			else
+				return null;
+		} catch (RepositoryException e) {
+			return null;
+		}
+	}
+
+	public boolean hasChildren(Object element) {
+		try {
+			return ((Node) element).hasNodes();
+		} catch (RepositoryException e) {
+			throw new ArgeoException("Cannot check children of " + element, e);
+		}
+	}
+
+	public void dispose() {
+	}
+
+	public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
+	}
+
+	protected Object[] childrenNodes(Node parentNode) {
+		try {
+			List<Node> children = new ArrayList<Node>();
+			NodeIterator nit = parentNode.getNodes();
+			while (nit.hasNext()) {
+				Node node = nit.nextNode();
+				children.add(node);
+			}
+			Node[] arr = children.toArray(new Node[children.size()]);
+			Arrays.sort(arr, itemComparator);
+			return arr;
+		} catch (RepositoryException e) {
+			throw new ArgeoException("Cannot list children of " + parentNode, e);
+		}
+	}
+}