Cross-process postMessage

content/renderer/proxy_view_host.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 "proxy_view_host.h"
+#include "base/logging.h"
+#include "content/common/view_messages.h"
+#include "content/public/renderer/render_thread.h"
+#include "content/renderer/dom_proxy_listener.h"
+#include "third_party/WebKit/Source/WebKit/chromium/public/platform/WebData.h"
+#include "third_party/WebKit/Source/WebKit/chromium/public/WebDOMMessageEvent.h"
+#include "third_party/WebKit/Source/WebKit/chromium/public/WebFrame.h"
+#include "third_party/WebKit/Source/WebKit/chromium/public/WebView.h"
+#include "third_party/WebKit/Source/WebKit/chromium/public/WebSecurityOrigin.h"
+#include "third_party/WebKit/Source/WebKit/chromium/public/WebSettings.h"
+
+using WebKit::WebDOMMessageEvent;
+
+namespace content {
+
+ProxyViewHost::ProxyViewHost(RenderView* owner,
+                             int64 opener_browsing_instance_frame_id)
+  : RenderViewObserver(owner),
+    opener_browsing_instance_frame_id_(opener_browsing_instance_frame_id) {
+  webview_ = WebView::create(this);
+  webview_->settings()->setJavaScriptEnabled(true);
+  webview_->initializeMainFrame(this);
+
+  WebFrame* frame = webview_->mainFrame();
+
+  frame->loadHTMLString(std::string(), GURL("about:swappedout"),
+                        GURL("about:swappedout"), false);
+}
+
+bool ProxyViewHost::interceptPostMessage(int64 frame_id,
+                                         WebSecurityOrigin target,
+                                         WebDOMMessageEvent event) {
+  ViewMsg_PostMessage_Params params;
+  params.data = event.data().toString();
+  params.sourceOrigin = event.origin();
+  params.targetOrigin = target.toString();
+
+  RenderThread::Get()->Send(new ViewHostMsg_SendPostMessage(
+      opener_browsing_instance_frame_id_, params));
+  return true;
+}
+
+void ProxyViewHost::Navigate(const GURL& url) {
+  // TODO(supersat): Does window.opener get reset on navigations?
+}
+
+void ProxyViewHost::ClosePage() {
+  // If the owner frame closes, the opener proxy is no longer needed.
+  delete this;
+}
+
+WebFrame* ProxyViewHost::mainFrame() {
+  return webview_->mainFrame();
+}
+
+ProxyViewHost::~ProxyViewHost() {
+  webview_->close();
+}
+
+}  // namespace content