Don't decorate ResourceMappings mapping only unshared resources

If a ResourceMapping has no shared resources, its state will be
untracked, which would make EGit show the "?" overlay.

Bug: 550082
Change-Id: I2bf6c1b7261907d8d49188317fc4a7768bc0f046
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>

1 files changed, 6 insertions, 2 deletions

diff --git a/org.eclipse.egit.ui/src/org/eclipse/egit/ui/internal/decorators/DecoratableResourceMapping.java b/org.eclipse.egit.ui/src/org/eclipse/egit/ui/internal/decorators/DecoratableResourceMapping.java
index 4415537be7..70282f320d 100644
--- a/org.eclipse.egit.ui/src/org/eclipse/egit/ui/internal/decorators/DecoratableResourceMapping.java
+++ b/org.eclipse.egit.ui/src/org/eclipse/egit/ui/internal/decorators/DecoratableResourceMapping.java
@@ -26,7 +26,7 @@ import org.eclipse.jgit.lib.Repository;
 /**
  * Represents a decoratable resource mapping (i.e. a group of resources).
  */
-public class DecoratableResourceMapping extends DecoratableResource {
+public class DecoratableResourceMapping extends DecoratableResourceGroup {
 
 	private static final String MULTIPLE = "*"; //$NON-NLS-1$
 
@@ -45,7 +45,7 @@ public class DecoratableResourceMapping extends DecoratableResource {
 	 */
 	public DecoratableResourceMapping(ResourceMapping mapping)
 			throws IOException {
-		super(null); // no resource ...
+		super(mapping);
 
 		Set<Repository> repositories = new HashSet<>();
 		Set<StagingState> stagingStates = new HashSet<>();
@@ -108,6 +108,10 @@ public class DecoratableResourceMapping extends DecoratableResource {
 			setStagingState(StagingState.MODIFIED);
 		}
 
+		if (repositories.isEmpty()) {
+			return;
+		}
+		someShared = true;
 		decorateRepositoryInformation(this, repositories);
 	}