Bug 568813 - Empty inspect window and hoverS4_18_0_M3I20201120-0320I20201119-0730I20201118-1800

The empty hover on BigSur is caused due to SWT Bug 567787- Setting Shell visible doesn't send SWT.SetData for Virtual Tree/Table. Due to this the virtual tree in the hover is not populated when set to visible.
The workaround is to call getText on the item so that it is already created when hover is shown.

Change-Id: I4c716082e2da778fc6f257283f3ebe3bbcc6a35e

1 files changed, 10 insertions, 1 deletions

diff --git a/org.eclipse.debug.ui/ui/org/eclipse/debug/internal/ui/hover/ExpressionInformationControlCreator.java b/org.eclipse.debug.ui/ui/org/eclipse/debug/internal/ui/hover/ExpressionInformationControlCreator.java
index 8d9940f0b..36339085e 100644
--- a/org.eclipse.debug.ui/ui/org/eclipse/debug/internal/ui/hover/ExpressionInformationControlCreator.java
+++ b/org.eclipse.debug.ui/ui/org/eclipse/debug/internal/ui/hover/ExpressionInformationControlCreator.java
@@ -1,5 +1,5 @@
 /****************************************************************************
-* Copyright (c) 2017, 2018 Red Hat Inc. and others.
+* Copyright (c) 2017, 2020 Red Hat Inc. and others.
 *
 * This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License 2.0
@@ -10,10 +10,12 @@
 *
 * Contributors:
 *     Mickael Istria (Red Hat Inc.) - [521958] initial implementation
+*     IBM Corporation - Bug 568813
 *******************************************************************************/
 package org.eclipse.debug.internal.ui.hover;
 
 import org.eclipse.core.runtime.CoreException;
+import org.eclipse.core.runtime.Platform;
 import org.eclipse.debug.core.model.IVariable;
 import org.eclipse.debug.internal.ui.DebugUIPlugin;
 import org.eclipse.debug.internal.ui.SWTFactory;
@@ -51,6 +53,7 @@ import org.eclipse.swt.widgets.Composite;
 import org.eclipse.swt.widgets.Layout;
 import org.eclipse.swt.widgets.Shell;
 import org.eclipse.swt.widgets.Tree;
+import org.eclipse.swt.widgets.TreeItem;
 import org.eclipse.ui.IWorkbenchPage;
 import org.eclipse.ui.IWorkbenchPartSite;
 import org.eclipse.ui.PlatformUI;
@@ -398,6 +401,12 @@ public class ExpressionInformationControlCreator implements IInformationControlC
 			if (input instanceof IVariable) {
 				fVariable = (IVariable) input;
 				fViewer.setInput(new TreeRoot());
+				// Workaround for empty hover popup dialog due to changed Mac API behaviour
+				if (Platform.OS_MACOSX.equals(Platform.getOS())) {
+					fTree.setItemCount(1);
+					TreeItem item = fTree.getItem(0);
+					item.getText();
+				}
 			}
 		}