Fix debug console not setting up completion provider

Fix #133930

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

@@ -143,7 +143,76 @@ export class Repl extends ViewPane implements IHistoryNavigationWidget {
 	}
 
 	private registerListeners(): void {
-		this._register(this.debugService.getViewModel().onDidFocusSession(async session => {
+		if (this.debugService.getViewModel().focusedSession) {
+			this.onDidFocusSession(this.debugService.getViewModel().focusedSession);
+		}
+
+		this._register(this.debugService.getViewModel().onDidFocusSession(async session => this.onDidFocusSession(session)));
+		this._register(this.debugService.onWillNewSession(async newSession => {
+			// Need to listen to output events for sessions which are not yet fully initialised
+			const input = this.tree.getInput();
+			if (!input || input.state === State.Inactive) {
+				await this.selectSession(newSession);
+			}
+			this.multiSessionRepl.set(this.isMultiSessionView);
+		}));
+		this._register(this.themeService.onDidColorThemeChange(() => {
+			this.refreshReplElements(false);
+			if (this.isVisible()) {
+				this.updateInputDecoration();
+			}
+		}));
+		this._register(this.onDidChangeBodyVisibility(visible => {
+			if (visible) {
+				if (!this.model) {
+					this.model = this.modelService.getModel(Repl.URI) || this.modelService.createModel('', null, Repl.URI, true);
+				}
+				this.setMode();
+				this.replInput.setModel(this.model);
+				this.updateInputDecoration();
+				this.refreshReplElements(true);
+				this.layoutBody(this.dimension.height, this.dimension.width);
+			}
+		}));
+		this._register(this.configurationService.onDidChangeConfiguration(e => {
+			if (e.affectsConfiguration('debug.console.wordWrap')) {
+				this.tree.dispose();
+				this.treeContainer.innerText = '';
+				dom.clearNode(this.treeContainer);
+				this.createReplTree();
+			} else if (e.affectsConfiguration('debug.console.lineHeight') || e.affectsConfiguration('debug.console.fontSize') || e.affectsConfiguration('debug.console.fontFamily')) {
+				this.onDidStyleChange();
+			}
+			if (e.affectsConfiguration('debug.console.acceptSuggestionOnEnter')) {
+				const config = this.configurationService.getValue<IDebugConfiguration>('debug');
+				this.replInput.updateOptions({
+					acceptSuggestionOnEnter: config.console.acceptSuggestionOnEnter === 'on' ? 'on' : 'off'
+				});
+			}
+		}));
+
+		this._register(this.themeService.onDidColorThemeChange(e => {
+			this.onDidStyleChange();
+		}));
+
+		this._register(this.viewDescriptorService.onDidChangeLocation(e => {
+			if (e.views.some(v => v.id === this.id)) {
+				this.onDidStyleChange();
+			}
+		}));
+
+		this._register(this.editorService.onDidActiveEditorChange(() => {
+			this.setMode();
+		}));
+
+		this._register(this.filterState.onDidChange(() => {
+			this.filter.filterQuery = this.filterState.filterText;
+			this.tree.refilter();
+			revealLastElement(this.tree);
+		}));
+	}
+
+	private async onDidFocusSession(session: IDebugSession | undefined): Promise<void> {
 		if (session) {
 			sessionsToIgnore.delete(session);
 			if (this.completionItemProvider) {
@@ -214,69 +283,6 @@ export class Repl extends ViewPane implements IHistoryNavigationWidget {
 		}
 
 		await this.selectSession();
-		}));
-		this._register(this.debugService.onWillNewSession(async newSession => {
-			// Need to listen to output events for sessions which are not yet fully initialised
-			const input = this.tree.getInput();
-			if (!input || input.state === State.Inactive) {
-				await this.selectSession(newSession);
-			}
-			this.multiSessionRepl.set(this.isMultiSessionView);
-		}));
-		this._register(this.themeService.onDidColorThemeChange(() => {
-			this.refreshReplElements(false);
-			if (this.isVisible()) {
-				this.updateInputDecoration();
-			}
-		}));
-		this._register(this.onDidChangeBodyVisibility(visible => {
-			if (visible) {
-				if (!this.model) {
-					this.model = this.modelService.getModel(Repl.URI) || this.modelService.createModel('', null, Repl.URI, true);
-				}
-				this.setMode();
-				this.replInput.setModel(this.model);
-				this.updateInputDecoration();
-				this.refreshReplElements(true);
-				this.layoutBody(this.dimension.height, this.dimension.width);
-			}
-		}));
-		this._register(this.configurationService.onDidChangeConfiguration(e => {
-			if (e.affectsConfiguration('debug.console.wordWrap')) {
-				this.tree.dispose();
-				this.treeContainer.innerText = '';
-				dom.clearNode(this.treeContainer);
-				this.createReplTree();
-			} else if (e.affectsConfiguration('debug.console.lineHeight') || e.affectsConfiguration('debug.console.fontSize') || e.affectsConfiguration('debug.console.fontFamily')) {
-				this.onDidStyleChange();
-			}
-			if (e.affectsConfiguration('debug.console.acceptSuggestionOnEnter')) {
-				const config = this.configurationService.getValue<IDebugConfiguration>('debug');
-				this.replInput.updateOptions({
-					acceptSuggestionOnEnter: config.console.acceptSuggestionOnEnter === 'on' ? 'on' : 'off'
-				});
-			}
-		}));
-
-		this._register(this.themeService.onDidColorThemeChange(e => {
-			this.onDidStyleChange();
-		}));
-
-		this._register(this.viewDescriptorService.onDidChangeLocation(e => {
-			if (e.views.some(v => v.id === this.id)) {
-				this.onDidStyleChange();
-			}
-		}));
-
-		this._register(this.editorService.onDidActiveEditorChange(() => {
-			this.setMode();
-		}));
-
-		this._register(this.filterState.onDidChange(() => {
-			this.filter.filterQuery = this.filterState.filterText;
-			this.tree.refilter();
-			revealLastElement(this.tree);
-		}));
 	}
 
 	getFilterStats(): { total: number, filtered: number } {
@@ -379,7 +385,7 @@ export class Repl extends ViewPane implements IHistoryNavigationWidget {
 	}
 
 	async selectSession(session?: IDebugSession): Promise<void> {
-		const treeInput = this.tree.getInput();
+		const treeInput = this.tree && this.tree.getInput();
 		if (!session) {
 			const focusedSession = this.debugService.getViewModel().focusedSession;
 			// If there is a focusedSession focus on that one, otherwise just show any other not ignored session