Add 'from' to telemetry events

src/vs/workbench/parts/walkThrough/electron-browser/editor/editorWalkThrough.ts

@@ -31,7 +31,7 @@ export class EditorWalkThroughAction extends Action {
 	public run(): TPromise<void> {
 		const uri = URI.parse(require.toUrl('./editorWalkThrough.md'))
 			.with({ scheme: WALK_THROUGH_SCHEME });
-		const input = this.instantiationService.createInstance(WalkThroughInput, localize('editorWalkThrough.title', "Editor Walk-Through"), '', uri, null);
+		const input = this.instantiationService.createInstance(WalkThroughInput, localize('editorWalkThrough.title', "Editor Walk-Through"), '', uri, /* telemetryFrom */ null, /* onReady */ null);
 		return this.editorService.openEditor(input, { pinned: true }, Position.ONE)
 			.then(() => void (0));
 	}

src/vs/workbench/parts/walkThrough/electron-browser/walkThroughPart.ts

@@ -81,18 +81,29 @@ export class WalkThroughPart extends BaseEditor {
 						scrollTarget.scrollIntoView();
 					}
 				} else {
-					this.openerService.open(URI.parse(node.href));
+					const uri = this.addFrom(URI.parse(node.href));
+					this.openerService.open(uri);
 				}
 				event.preventDefault();
 			} else if (node instanceof HTMLButtonElement) {
 				const href = node.getAttribute('data-href');
 				if (href) {
-					this.openerService.open(URI.parse(href));
+					const uri = this.addFrom(URI.parse(href));
+					this.openerService.open(uri);
 				}
 			}
 		});
 	}
 
+	private addFrom(uri: URI) {
+		if (uri.scheme !== 'command') {
+			return uri;
+		}
+		const query = uri.query ? JSON.parse(uri.query) : {};
+		query.from = (<WalkThroughInput>this.input).getTelemetryFrom();
+		return uri.with({ query: JSON.stringify(query) });
+	}
+
 	layout({ width, height }: Dimension): void {
 		$(this.content).style({ height: `${height}px`, width: `${width}px` });
 		this.contentDisposables.forEach(disposable => {

src/vs/workbench/parts/walkThrough/node/walkThroughInput.ts

@@ -43,23 +43,16 @@ export class WalkThroughInput extends EditorInput {
 	static ID: string = 'workbench.editors.walkThroughInput';
 
 	private promise: TPromise<WalkThroughModel>;
-	private resource: URI;
-
-	private name: string;
-	private description: string;
 
 	constructor(
-		name: string,
-		description: string,
-		resource: URI,
+		private name: string,
+		private description: string,
+		private resource: URI,
+		private telemetryFrom: string,
 		public readonly onReady: (container: HTMLElement) => void,
 		@ITextModelResolverService private textModelResolverService: ITextModelResolverService
 	) {
 		super();
-
-		this.name = name;
-		this.description = description;
-		this.resource = resource;
 	}
 
 	getResource(): URI {
@@ -78,6 +71,10 @@ export class WalkThroughInput extends EditorInput {
 		return this.description;
 	}
 
+	getTelemetryFrom(): string {
+		return this.telemetryFrom || 'walkThrough';
+	}
+
 	getTelemetryDescriptor(): { [key: string]: any; } {
 		const descriptor = super.getTelemetryDescriptor();
 		descriptor['resource'] = telemetryURIDescriptor(this.resource);

src/vs/workbench/parts/welcomePage/electron-browser/welcomePage.ts

@@ -86,7 +86,7 @@ class WelcomePage {
 		const recentlyOpened = this.windowService.getRecentlyOpen();
 		const uri = URI.parse(require.toUrl('./welcomePage.html'))
 			.with({ scheme: WALK_THROUGH_SCHEME });
-		const input = this.instantiationService.createInstance(WalkThroughInput, localize('welcome.title', "Welcome"), '', uri, container => this.onReady(container, recentlyOpened));
+		const input = this.instantiationService.createInstance(WalkThroughInput, localize('welcome.title', "Welcome"), '', uri, 'welcomePage', container => this.onReady(container, recentlyOpened));
 		this.editorService.openEditor(input, { pinned: true }, Position.ONE)
 			.then(null, onUnexpectedError);
 	}