Cross-process postMessage

content/renderer/dom_proxy_listener.cc

+// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "content/common/view_messages.h"
+#include "content/renderer/dom_proxy_listener.h"
+#include "content/public/renderer/render_thread.h"
+#include "third_party/WebKit/Source/WebKit/chromium/public/WebDocument.h"
+#include "third_party/WebKit/Source/WebKit/chromium/public/WebDOMEvent.h"
+#include "third_party/WebKit/Source/WebKit/chromium/public/WebDOMMessageEvent.h"
+#include "third_party/WebKit/Source/WebKit/chromium/public/WebFrame.h"
+
+using WebKit::WebDOMMessageEvent;
+
+namespace content {
+
+DOMProxyListener::DOMProxyListener(WebFrame* frame,
+                                   int64 browsing_instance_frame_id)
+    : frame_(frame),
+      browsing_instance_frame_id_(browsing_instance_frame_id) {
+  DCHECK_NE(browsing_instance_frame_id, -1);
+  DLOG(WARNING) << "installing DOM proxy for bifi "
+                << browsing_instance_frame_id;
+
+  frame_->document().securityOrigin().grantReceivePostMessagesFromAnyOrigin();
+  frame_->addEventListener("message", this, false);
+}
+
+DOMProxyListener::~DOMProxyListener() {
+}
+
+void DOMProxyListener::handleEvent(const WebDOMEvent& event) {
+  if (event.isMessageEvent()) {
+    DLOG(WARNING) << "DOMProxyListener::handleEvent called";
+    const WebDOMMessageEvent msg_event = event.toConst<WebDOMMessageEvent>();
+
+    ViewMsg_PostMessage_Params params;
+    params.data = msg_event.data();
+    params.origin = msg_event.origin();
+    params.lastEventId = msg_event.lastEventId();
+
+    RenderThread::Get()->Send(new ViewHostMsg_SendPostMessage(
+        browsing_instance_frame_id_, params));

[Charlie Reis, 2011/12/01 23:13:02]

How will we extend this to handle other types of events, like close()?

[supersat, 2011/12/09 23:08:20]

We'll get WebFrameClient callbacks like willClose(). This class is going away if
we stick with Adam's approach.

+  }
+}
+
+}  // namespace content
+