debug: restart frame on hover

#84045

src/vs/workbench/contrib/debug/browser/callStackView.ts

@@ -385,6 +385,7 @@ interface IStackFrameTemplateData {
 	fileName: HTMLElement;
 	lineNumber: HTMLElement;
 	label: HighlightedLabel;
+	actionBar: ActionBar;
 }
 
 class SessionsRenderer implements ITreeRenderer<IDebugSession, FuzzyScore, ISessionTemplateData> {
@@ -481,8 +482,9 @@ class StackFramesRenderer implements ITreeRenderer<IStackFrame, FuzzyScore, ISta
 		const wrapper = dom.append(file, $('span.line-number-wrapper'));
 		const lineNumber = dom.append(wrapper, $('span.line-number'));
 		const label = new HighlightedLabel(labelDiv, false);
+		const actionBar = new ActionBar(stackFrame);
 
-		return { file, fileName, label, lineNumber, stackFrame };
+		return { file, fileName, label, lineNumber, stackFrame, actionBar };
 	}
 
 	renderElement(element: ITreeNode<IStackFrame, FuzzyScore>, index: number, data: IStackFrameTemplateData): void {
@@ -490,6 +492,8 @@ class StackFramesRenderer implements ITreeRenderer<IStackFrame, FuzzyScore, ISta
 		dom.toggleClass(data.stackFrame, 'disabled', !stackFrame.source || !stackFrame.source.available || isDeemphasized(stackFrame));
 		dom.toggleClass(data.stackFrame, 'label', stackFrame.presentationHint === 'label');
 		dom.toggleClass(data.stackFrame, 'subtle', stackFrame.presentationHint === 'subtle');
+		const hasActions = stackFrame.thread.session.capabilities.supportsRestartFrame;
+		dom.toggleClass(data.stackFrame, 'has-actions', hasActions);
 
 		data.file.title = stackFrame.source.inMemory ? stackFrame.source.uri.path : this.labelService.getUriLabel(stackFrame.source.uri);
 		if (stackFrame.source.raw.origin) {
@@ -506,10 +510,18 @@ class StackFramesRenderer implements ITreeRenderer<IStackFrame, FuzzyScore, ISta
 		} else {
 			dom.addClass(data.lineNumber, 'unavailable');
 		}
+
+		data.actionBar.clear();
+		if (hasActions) {
+			const action = new Action('debug.callStack.restartFrame', nls.localize('restartFrame', "Restart Frame"), 'codicon-debug-restart', true, () => {
+				return stackFrame.restart();
+			});
+			data.actionBar.push(action, { icon: true, label: false });
+		}
 	}
 
 	disposeTemplate(templateData: IStackFrameTemplateData): void {
-		// noop
+		templateData.actionBar.dispose();
 	}
 }
 

src/vs/workbench/contrib/debug/browser/media/debugViewlet.css

@@ -148,6 +148,11 @@
 	display: none;
 }
 
+.debug-viewlet .debug-call-stack .monaco-list-row:hover .stack-frame.has-actions .file,
+.debug-viewlet .debug-call-stack .monaco-list-row.focused .stack-frame.has-actions .file {
+	display: none;
+}
+
 .debug-viewlet .debug-call-stack .monaco-list-row .monaco-action-bar {
 	display: none;
 }