X-Git-Url: http://git.argeo.org/?a=blobdiff_plain;f=server%2Fplugins%2Forg.argeo.jcr.ui.explorer%2Fsrc%2Fmain%2Fjava%2Forg%2Fargeo%2Fjcr%2Fui%2Fexplorer%2Fbrowser%2FNodeContentProvider.java;fp=server%2Fplugins%2Forg.argeo.jcr.ui.explorer%2Fsrc%2Fmain%2Fjava%2Forg%2Fargeo%2Fjcr%2Fui%2Fexplorer%2Fbrowser%2FNodeContentProvider.java;h=b2bd4b753ddde9844ed3cc911ec6136b93081b30;hb=c425aea5b318f0c291804cf3973b3059f923e9b5;hp=0000000000000000000000000000000000000000;hpb=2bdf4f00f73c883a5329f16aadf54ad83c7df6d0;p=lgpl%2Fargeo-commons.git

diff --git a/server/plugins/org.argeo.jcr.ui.explorer/src/main/java/org/argeo/jcr/ui/explorer/browser/NodeContentProvider.java b/server/plugins/org.argeo.jcr.ui.explorer/src/main/java/org/argeo/jcr/ui/explorer/browser/NodeContentProvider.java
new file mode 100644
index 000000000..b2bd4b753
--- /dev/null
+++ b/server/plugins/org.argeo.jcr.ui.explorer/src/main/java/org/argeo/jcr/ui/explorer/browser/NodeContentProvider.java
@@ -0,0 +1,132 @@
+package org.argeo.jcr.ui.explorer.browser;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+import java.util.Map;
+
+import javax.jcr.Node;
+import javax.jcr.NodeIterator;
+import javax.jcr.Repository;
+import javax.jcr.RepositoryException;
+import javax.jcr.Session;
+
+import org.argeo.ArgeoException;
+import org.argeo.jcr.JcrUtils;
+import org.argeo.jcr.RepositoryRegister;
+import org.eclipse.jface.viewers.ITreeContentProvider;
+import org.eclipse.jface.viewers.Viewer;
+
+public class NodeContentProvider implements ITreeContentProvider {
+	private ItemComparator itemComparator = new ItemComparator();
+
+	private RepositoryRegister repositoryRegister;
+	private Session userSession;
+
+	public NodeContentProvider(Session userSession,
+			RepositoryRegister repositoryRegister) {
+		this.userSession = userSession;
+		this.repositoryRegister = repositoryRegister;
+	}
+
+	/**
+	 * Sends back the first level of the Tree. Independent from inputElement
+	 * that can be null
+	 */
+	public Object[] getElements(Object inputElement) {
+		List<Object> objs = new ArrayList<Object>();
+		if (userSession != null) {
+			Node userHome = JcrUtils.getUserHome(userSession);
+			if (userHome != null)
+				objs.add(userHome);
+		}
+		if (repositoryRegister != null)
+			objs.add(repositoryRegister);
+		return objs.toArray();
+	}
+
+	public Object[] getChildren(Object parentElement) {
+		if (parentElement instanceof Node) {
+			return childrenNodes((Node) parentElement);
+		} else if (parentElement instanceof RepositoryNode) {
+			return ((RepositoryNode) parentElement).getChildren();
+		} else if (parentElement instanceof WorkspaceNode) {
+			Session session = ((WorkspaceNode) parentElement).getSession();
+			if (session == null)
+				return new Object[0];
+
+			try {
+				return childrenNodes(session.getRootNode());
+			} catch (RepositoryException e) {
+				throw new ArgeoException("Cannot retrieve root node of "
+						+ session, e);
+			}
+		} else if (parentElement instanceof RepositoryRegister) {
+			RepositoryRegister repositoryRegister = (RepositoryRegister) parentElement;
+			List<RepositoryNode> nodes = new ArrayList<RepositoryNode>();
+			Map<String, Repository> repositories = repositoryRegister
+					.getRepositories();
+			for (String name : repositories.keySet()) {
+				nodes.add(new RepositoryNode(name, repositories.get(name)));
+			}
+			return nodes.toArray();
+		} else {
+			return new Object[0];
+		}
+	}
+
+	public Object getParent(Object element) {
+		try {
+			if (element instanceof Node) {
+				Node node = (Node) element;
+				if (!node.getPath().equals("/"))
+					return node.getParent();
+				else
+					return null;
+			}
+			return null;
+		} catch (RepositoryException e) {
+			return null;
+		}
+	}
+
+	public boolean hasChildren(Object element) {
+		try {
+			if (element instanceof Node) {
+				return ((Node) element).hasNodes();
+			} else if (element instanceof RepositoryNode) {
+				return ((RepositoryNode) element).hasChildren();
+			} else if (element instanceof WorkspaceNode) {
+				return ((WorkspaceNode) element).getSession() != null;
+			} else if (element instanceof RepositoryRegister) {
+				return ((RepositoryRegister) element).getRepositories().size() > 0;
+			}
+			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) {
+	}
+
+	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);
+		}
+	}
+
+}