chore(bidi): add support for context locators

Author: hbenl

packages/playwright-core/src/server/bidi/bidiBrowser.ts

@@ -135,10 +135,15 @@ export class BidiBrowser extends Browser {
         if (!parentFrame)
           continue;
         page._session.addFrameBrowsingContext(event.context);
-        page._page.frameManager.frameAttached(event.context, parentFrameId);
-        const frame = page._page.frameManager.frame(event.context);
-        if (frame)
-          frame._url = event.url;
+        const frame = page._page.frameManager.frameAttached(event.context, parentFrameId);
+        frame._url = event.url;
+        page._frameNamePromises.set(
+            event.context,
+            page._getFrameNode(frame).then(node => {
+              const attributes = node?.value?.attributes;
+              return attributes?.name ?? attributes?.id ?? '';
+            })
+        );
         return;
       }
       return;

packages/playwright-core/src/server/bidi/bidiExecutionContext.ts

@@ -141,11 +141,11 @@ export class BidiExecutionContext implements js.ExecutionContextDelegate {
     };
   }
 
-  async remoteObjectForNodeId(context: dom.FrameExecutionContext, nodeId: bidi.Script.SharedReference): Promise<js.JSHandle> {
+  async remoteObjectForNodeId(context: dom.FrameExecutionContext, nodeId: bidi.Script.SharedReference): Promise<dom.ElementHandle> {
     const result = await this._remoteValueForReference(nodeId, true);
     if (!('handle' in result))
       throw new Error('Can\'t get remote object for nodeId');
-    return createHandle(context, result);
+    return createHandle(context, result) as dom.ElementHandle;
   }
 
   async contentFrameIdForFrame(handle: dom.ElementHandle) {

packages/playwright-core/src/server/bidi/bidiPage.ts

@@ -52,6 +52,7 @@ export class BidiPage implements PageDelegate {
   readonly _networkManager: BidiNetworkManager;
   private readonly _pdf: BidiPDF;
   private _initScriptIds = new Map<InitScript, string>();
+  readonly _frameNamePromises = new Map<string, Promise<string>>();
 
   constructor(browserContext: BidiBrowserContext, bidiSession: BidiSession, opener: BidiPage | null) {
     this._session = bidiSession;
@@ -195,16 +196,30 @@ export class BidiPage implements PageDelegate {
 
   private _onNavigationCommitted(params: bidi.BrowsingContext.NavigationInfo) {
     const frameId = params.context;
-    this._page.frameManager.frameCommittedNewDocumentNavigation(frameId, params.url, '', params.navigation!, /* initial */ false);
+    const namePromise = this._frameNamePromises.get(frameId) ?? '';
+    this._frameNamePromises.delete(frameId);
+    this._page.frameManager.frameCommittedNewDocumentNavigation(frameId, params.url, namePromise, params.navigation!, /* initial */ false);
   }
 
-  private _onDomContentLoaded(params: bidi.BrowsingContext.NavigationInfo) {
+  private async _onDomContentLoaded(params: bidi.BrowsingContext.NavigationInfo) {
     const frameId = params.context;
+    const frame = this._page.frameManager.frame(frameId)!;
+    await this._waitForChildFrameNames(frame);
     this._page.frameManager.frameLifecycleEvent(frameId, 'domcontentloaded');
   }
 
-  private _onLoad(params: bidi.BrowsingContext.NavigationInfo) {
-    this._page.frameManager.frameLifecycleEvent(params.context, 'load');
+  private async _onLoad(params: bidi.BrowsingContext.NavigationInfo) {
+    const frameId = params.context;
+    const frame = this._page.frameManager.frame(frameId)!;
+    await this._waitForChildFrameNames(frame);
+    this._page.frameManager.frameLifecycleEvent(frameId, 'load');
+  }
+
+  private async _waitForChildFrameNames(frame: frames.Frame) {
+    for (const childFrame of frame.childFrames()) {
+      await this._frameNamePromises.get(childFrame._id);
+      await this._waitForChildFrameNames(childFrame);
+    }
   }
 
   private _onNavigationAborted(params: bidi.BrowsingContext.NavigationInfo) {
@@ -582,24 +597,24 @@ export class BidiPage implements PageDelegate {
     const parent = frame.parentFrame();
     if (!parent)
       throw new Error('Frame has been detached.');
-    const parentContext = await parent._mainContext();
-    const list = await parentContext.evaluateHandle(() => { return [...document.querySelectorAll('iframe,frame')]; });
-    const length = await list.evaluate(list => list.length);
-    let foundElement = null;
-    for (let i = 0; i < length; i++) {
-      const element = await list.evaluateHandle((list, i) => list[i], i);
-      const candidate = await element.contentFrame();
-      if (frame === candidate) {
-        foundElement = element;
-        break;
-      } else {
-        element.dispose();
-      }
-    }
-    list.dispose();
-    if (!foundElement)
+    const node = await this._getFrameNode(frame);
+    if (!node?.sharedId)
       throw new Error('Frame has been detached.');
-    return foundElement;
+    const parentFrameExecutionContext = await parent._mainContext();
+    return await toBidiExecutionContext(parentFrameExecutionContext).remoteObjectForNodeId(parentFrameExecutionContext, { sharedId: node.sharedId });
+  }
+
+  async _getFrameNode(frame: frames.Frame): Promise<bidi.Script.NodeRemoteValue | undefined> {
+    const parent = frame.parentFrame();
+    if (!parent)
+      return undefined;
+
+    const result = await this._session.send('browsingContext.locateNodes', {
+      context: parent._id,
+      locator: { type: 'context', value: { context: frame._id } },
+    });
+    const node = result.nodes[0];
+    return node;
   }
 
   shouldToggleStyleSheetToSyncAnimations(): boolean {

packages/playwright-core/src/server/frames.ts

@@ -208,11 +208,13 @@ export class FrameManager {
     frame.setPendingDocument({ documentId, request });
   }
 
-  frameCommittedNewDocumentNavigation(frameId: string, url: string, name: string, documentId: string, initial: boolean) {
+  async frameCommittedNewDocumentNavigation(frameId: string, url: string, name: string | Promise<string>, documentId: string, initial: boolean) {
     const frame = this._frames.get(frameId)!;
     this.removeChildFramesRecursively(frame);
     this.clearWebSockets(frame);
     frame._url = url;
+    if (typeof name !== 'string')
+      name = await name;
     frame._name = name;
 
     let keepPending: DocumentInfo | undefined;