callStack, repl and watchExpressions provide identityProvider

src/vs/workbench/parts/debug/electron-browser/callStackView.ts

@@ -112,6 +112,18 @@ export class CallStackView extends ViewletPanel {
 		], this.dataSource, {
 				accessibilityProvider: new CallStackAccessibilityProvider(),
 				ariaLabel: nls.localize({ comment: ['Debug is a noun in this context, not a verb.'], key: 'callStackAriaLabel' }, "Debug Call Stack"),
+				identityProvider: {
+					getId: element => {
+						if (typeof element === 'string') {
+							return element;
+						}
+						if (element instanceof Array) {
+							return `showMore ${element[0].getId()}`;
+						}
+
+						return element.getId();
+					}
+				}
 			}, this.contextKeyService, this.listService, this.themeService, this.configurationService);
 
 		const callstackNavigator = new TreeResourceNavigator2(this.tree);

src/vs/workbench/parts/debug/electron-browser/repl.ts

@@ -346,7 +346,8 @@ export class Repl extends Panel implements IPrivateReplService, IHistoryNavigati
 			new ReplRawObjectsRenderer()
 		], this.dataSource, {
 				ariaLabel: nls.localize('replAriaLabel', "Read Eval Print Loop Panel"),
-				accessibilityProvider: new ReplAccessibilityProvider()
+				accessibilityProvider: new ReplAccessibilityProvider(),
+				identityProvider: { getId: element => element.getId() }
 			}, this.contextKeyService, this.listService, this.themeService, this.configurationService);
 
 		this.toDispose.push(this.tree.onContextMenu(e => this.onContextMenu(e)));

src/vs/workbench/parts/debug/electron-browser/watchExpressionsView.ts

@@ -67,6 +67,7 @@ export class WatchExpressionsView extends ViewletPanel {
 			new WatchExpressionsDataSource(this.debugService), {
 				ariaLabel: nls.localize({ comment: ['Debug is a noun in this context, not a verb.'], key: 'watchAriaTreeLabel' }, "Debug Watch Expressions"),
 				accessibilityProvider: new WatchExpressionsAccessibilityProvider(),
+				identityProvider: { getId: element => element.getId() }
 			}, this.contextKeyService, this.listService, this.themeService, this.configurationService);
 
 		this.tree.refresh(null);