Move Eclipse components which are JCR specific.

[lgpl/argeo-commons.git] / org.argeo.cms.ui / src / org / argeo / eclipse / ui / jcr / NodesWrapper.java

diff --git a/org.argeo.cms.ui/src/org/argeo/eclipse/ui/jcr/NodesWrapper.java b/org.argeo.cms.ui/src/org/argeo/eclipse/ui/jcr/NodesWrapper.java
new file mode 100644 (file)
index 0000000..2f808a5
--- /dev/null
+++ b/org.argeo.cms.ui/src/org/argeo/eclipse/ui/jcr/NodesWrapper.java
@@ -0,0 +1,71 @@
+package org.argeo.eclipse.ui.jcr;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import javax.jcr.Node;
+import javax.jcr.NodeIterator;
+import javax.jcr.RepositoryException;
+
+import org.argeo.eclipse.ui.EclipseUiException;
+
+/**
+ * Element of tree which is based on a node, but whose children are not
+ * necessarily this node children.
+ */
+public class NodesWrapper {
+       private final Node node;
+
+       public NodesWrapper(Node node) {
+               super();
+               this.node = node;
+       }
+
+       protected NodeIterator getNodeIterator() throws RepositoryException {
+               return node.getNodes();
+       }
+
+       protected List<WrappedNode> getWrappedNodes() throws RepositoryException {
+               List<WrappedNode> nodes = new ArrayList<WrappedNode>();
+               for (NodeIterator nit = getNodeIterator(); nit.hasNext();)
+                       nodes.add(new WrappedNode(this, nit.nextNode()));
+               return nodes;
+       }
+
+       public Object[] getChildren() {
+               try {
+                       return getWrappedNodes().toArray();
+               } catch (RepositoryException e) {
+                       throw new EclipseUiException("Cannot get wrapped children", e);
+               }
+       }
+
+       /**
+        * @return true by default because we don't want to compute the wrapped
+        *         nodes twice
+        */
+       public Boolean hasChildren() {
+               return true;
+       }
+
+       public Node getNode() {
+               return node;
+       }
+
+       @Override
+       public int hashCode() {
+               return node.hashCode();
+       }
+
+       @Override
+       public boolean equals(Object obj) {
+               if (obj instanceof NodesWrapper)
+                       return node.equals(((NodesWrapper) obj).getNode());
+               else
+                       return false;
+       }
+
+       public String toString() {
+               return "nodes wrapper based on " + node;
+       }
+}