X-Git-Url: https://git.argeo.org/?a=blobdiff_plain;f=server%2Fplugins%2Forg.argeo.jcr.ui.explorer%2Fsrc%2Fmain%2Fjava%2Forg%2Fargeo%2Fjcr%2Fui%2Fexplorer%2Futils%2FJcrUiUtils.java;h=2b76f04b8ba7a74e5a807d98218f646ede088982;hb=8b8ee149b20e2578a55e17413fa5f7399ff7ba14;hp=72bd9ab117a0ee53f690e39c0f6e396dc1cab734;hpb=c425aea5b318f0c291804cf3973b3059f923e9b5;p=lgpl%2Fargeo-commons.git

diff --git a/server/plugins/org.argeo.jcr.ui.explorer/src/main/java/org/argeo/jcr/ui/explorer/utils/JcrUiUtils.java b/server/plugins/org.argeo.jcr.ui.explorer/src/main/java/org/argeo/jcr/ui/explorer/utils/JcrUiUtils.java
index 72bd9ab11..2b76f04b8 100644
--- a/server/plugins/org.argeo.jcr.ui.explorer/src/main/java/org/argeo/jcr/ui/explorer/utils/JcrUiUtils.java
+++ b/server/plugins/org.argeo.jcr.ui.explorer/src/main/java/org/argeo/jcr/ui/explorer/utils/JcrUiUtils.java
@@ -1,5 +1,143 @@
 package org.argeo.jcr.ui.explorer.utils;
 
+import javax.jcr.Node;
+import javax.jcr.RepositoryException;
+
+import org.argeo.ArgeoException;
+import org.argeo.eclipse.ui.TreeParent;
+import org.argeo.jcr.ui.explorer.model.SingleJcrNode;
+import org.argeo.jcr.ui.explorer.model.WorkspaceNode;
+
+/** Centralizes some useful methods to build Uis with JCR */
 public class JcrUiUtils {
 
+	/** Insure that the UI componant is not stale, refresh if needed */
+	public static void forceRefreshIfNeeded(TreeParent element) {
+		Node curNode;
+
+		if (element instanceof SingleJcrNode)
+			curNode = ((SingleJcrNode) element).getNode();
+		else if (element instanceof WorkspaceNode)
+			curNode = ((WorkspaceNode) element).getRootNode();
+		else
+			return;
+		// TODO implement specific methods for other cases
+
+		try {
+			// we mainly rely on nb of children
+			if (element.getChildren().length == curNode.getNodes().getSize())
+				return;
+			else {
+				// get rid of children of UI object
+				element.clearChildren();
+				element.getChildren();
+			}
+		} catch (RepositoryException re) {
+			throw new ArgeoException(
+					"Unexpected error while synchronising the UI with the JCR repository",
+					re);
+		}
+	}
+
+	/**
+	 * Insure that a model element is inline with the underlying data by
+	 * cleaning the corresponding subtree and building it again.
+	 */
+	public static void forceRebuild(TreeParent element) {
+		// TODO implement this method if needed.
+	}
+	/**
+	 * Workaround to get the alias of the repository that contains the given
+	 * element. As we cannot browse the UI tree upward we recursively browse it
+	 * downward until we find the given element
+	 * */
+	// public static String getRepositoryAliasFromITreeElement(
+	// NodeContentProvider ncp, Object element) {
+	// RepositoryNode repositoryNode = null;
+	// if (element instanceof RepositoryNode)
+	// return ((RepositoryNode) element).getName();
+	// else if (element instanceof RepositoryRegister)
+	// throw new ArgeoException(
+	// "Cannot get alias for a repository register");
+	//
+	// // Get root elements
+	// Object[] elements = ncp.getElements(null);
+	//
+	// try {
+	// for (int i = 0; i < elements.length; i++) {
+	// if (elements[i] instanceof Node) {
+	// Node curNode = (Node) elements[i];
+	// if (curNode.isNodeType(ArgeoTypes.ARGEO_USER_HOME)) {
+	// // Do nothing, we'll find the node in the "normal" tree
+	// // and
+	// // get corresponding alias this way round
+	// } else
+	// throw new ArgeoException(
+	// "Normal nodes should not be at the root of NodeTreeViewer");
+	// } else if (elements[i] instanceof RepositoryRegister) {
+	// RepositoryRegister repositoryRegister = (RepositoryRegister) elements[i];
+	// Map<String, Repository> repositories = repositoryRegister
+	// .getRepositories();
+	//
+	// for (String name : repositories.keySet()) {
+	// boolean found = isElementInCurrentTreePart(
+	// ncp,
+	// new RepositoryNode(name, repositories.get(name)),
+	// (Node) element);
+	// if (found)
+	// return name;
+	// }
+	// } else
+	// throw new ArgeoException(
+	// "Unexpected object class at the root of NodeTreeViewer");
+	// }
+	// } catch (RepositoryException re) {
+	// throw new ArgeoException(
+	// "Unexpected error while retrieving Alias name", re);
+	// }
+	// return null;
+	// }
+	//
+	// /** implements the recursivity */
+	// private static boolean isElementInCurrentTreePart(NodeContentProvider
+	// ncp,
+	// Object parentElement, NodParente searchedElement) {
+	// boolean found = false;
+	// if (parentElement instanceof WorkspaceNode) {
+	// WorkspaceNode wn = (WorkspaceNode) parentElement;
+	// Object[] children = wn.getChildren();
+	// int i = children.length - 1;
+	// while (!found && i >= 0) {
+	// found = isElementInCurrentTreePart(ncp, children[i],
+	// searchedElement);
+	// }
+	// return found;
+	// } else if (parentElement instanceof RepositoryNode) {
+	// RepositoryNode rn = (RepositoryNode) parentElement;
+	// Object[] children = rn.getChildren();
+	// int i = children.length - 1;
+	// while (!found && i >= 0) {
+	// found = isElementInCurrentTreePart(ncp, children[i],
+	// searchedElement);
+	// }
+	// return found;
+	// } else {
+	// Node node = (Node) parentElement;
+	// if (node.equals(searchedElement))
+	// return true;
+	// NodeIterator ni;
+	// try {
+	// ni = node.getNodes();
+	// while (!found && ni.hasNext()) {
+	// found = isElementInCurrentTreePart(ncp, ni.nextNode(),
+	// searchedElement);
+	// }
+	// } catch (RepositoryException e) {
+	// throw new ArgeoException("unexpected erreur while recursively"
+	// + " recovering RepositoryNode for selected object", e);
+	// }
+	//
+	// return found;
+	// }
+	// }
 }