Show frames as children of GroupedStackFrame

Author: gzsombor

org.eclipse.jdt.debug.ui/ui/org/eclipse/jdt/internal/debug/ui/JDIDebugUIPlugin.java

@@ -385,6 +385,7 @@ public void start(BundleContext context) throws Exception {
         manager.registerAdapters(monitorFactory, JavaOwningThread.class);
         manager.registerAdapters(monitorFactory, JavaWaitingThread.class);
         manager.registerAdapters(monitorFactory, IJavaStackFrame.class);
+		manager.registerAdapters(monitorFactory, GroupedStackFrame.class);
 
         IAdapterFactory targetFactory = new TargetAdapterFactory();
         manager.registerAdapters(targetFactory, IJavaDebugTarget.class);

org.eclipse.jdt.debug.ui/ui/org/eclipse/jdt/internal/debug/ui/monitors/JavaThreadContentProvider.java

@@ -49,6 +49,9 @@ public class JavaThreadContentProvider extends JavaElementContentProvider {
 	 */
 	@Override
 	protected int getChildCount(Object element, IPresentationContext context, IViewerUpdate monitor) throws CoreException {
+		if (element instanceof GroupedStackFrame) {
+			return ((GroupedStackFrame) element).getFrameCount();
+		}
 		IJavaThread thread = (IJavaThread)element;
 		if (!thread.isSuspended()) {
 			return 0;
@@ -80,13 +83,20 @@ private int getFrameCount(IJavaThread thread) throws DebugException {
 	 */
 	@Override
 	protected Object[] getChildren(Object parent, int index, int length, IPresentationContext context, IViewerUpdate monitor) throws CoreException {
+		if (parent instanceof GroupedStackFrame) {
+			return getChildren((GroupedStackFrame) parent, index, length);
+		}
 		IJavaThread thread = (IJavaThread)parent;
 		if (!thread.isSuspended()) {
 			return EMPTY;
 		}
 		return getElements(getChildren(thread), index, length);
 	}
 
+	private Object[] getChildren(GroupedStackFrame parent, int index, int length) {
+		return parent.getFramesAsArray(index, length);
+	}
+
 	protected Object[] getChildren(IJavaThread thread) {
 		try {
 			if (thread instanceof JDIThread) {
@@ -170,6 +180,9 @@ protected boolean hasChildren(Object element, IPresentationContext context, IVie
 				}
 			}
 		}
+		if (element instanceof GroupedStackFrame) {
+			return ((GroupedStackFrame) element).getFrameCount() > 0;
+		}
 		return ((IJavaThread)element).hasStackFrames() ||
 			(isDisplayMonitors() && ((IJavaThread)element).hasOwnedMonitors());
 	}

org.eclipse.jdt.debug.ui/ui/org/eclipse/jdt/internal/debug/ui/monitors/MonitorsAdapterFactory.java

@@ -17,6 +17,7 @@
 import org.eclipse.debug.internal.ui.viewers.model.provisional.IElementContentProvider;
 import org.eclipse.jdt.debug.core.IJavaStackFrame;
 import org.eclipse.jdt.debug.core.IJavaThread;
+import org.eclipse.jdt.internal.debug.core.model.GroupedStackFrame;
 import org.eclipse.jdt.internal.debug.ui.variables.JavaStackFrameContentProvider;
 
 /**
@@ -40,7 +41,7 @@ public class MonitorsAdapterFactory implements IAdapterFactory {
 	public <T> T getAdapter(Object adaptableObject, Class<T> adapterType) {
 
     	if (IElementContentProvider.class.equals(adapterType)) {
-    		if (adaptableObject instanceof IJavaThread) {
+			if (adaptableObject instanceof IJavaThread || adaptableObject instanceof GroupedStackFrame) {
 				return (T) getThreadPresentation();
 	        }
     		if (adaptableObject instanceof IJavaStackFrame) {

org.eclipse.jdt.debug/model/org/eclipse/jdt/internal/debug/core/model/GroupedStackFrame.java

@@ -41,6 +41,11 @@ public Object[] getFramesAsArray() {
 		return stackFrames.toArray();
 	}
 
+	public Object[] getFramesAsArray(int index, int length) {
+		var subList = stackFrames.subList(index, index + length);
+		return subList.isEmpty() ? null : subList.toArray();
+	}
+
 	public IJavaStackFrame getTopMostFrame() {
 		return !stackFrames.isEmpty() ? stackFrames.get(0) : null;
 	}