src/content/browser/frame_host/render_frame_message_filter.cc

   1 // Copyright 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "content/browser/frame_host/render_frame_message_filter.h"
   6
   7 #include "content/browser/frame_host/render_frame_host_impl.h"
   8 #include "content/browser/renderer_host/render_widget_helper.h"
   9 #include "content/common/frame_messages.h"
  10 #include "content/public/browser/browser_thread.h"
  11
  12 namespace content {
  13
  14 namespace {
  15
  16 void CreateChildFrameOnUI(int process_id,
  17                           int parent_render_frame_id,
  18                           int64 parent_frame_id,
  19                           int64 frame_id,
  20                           const std::string& frame_name,
  21                           int new_render_frame_id) {
  22   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
  23   RenderFrameHostImpl* render_frame_host =
  24       RenderFrameHostImpl::FromID(process_id, parent_render_frame_id);
  25   // Handles the RenderFrameHost being deleted on the UI thread while
  26   // processing a subframe creation message.
  27   if (render_frame_host) {
  28     render_frame_host->OnCreateChildFrame(new_render_frame_id,
  29                                           parent_frame_id, frame_id,
  30                                           frame_name);
  31   }
  32 }
  33
  34 }  // namespace
  35
  36 RenderFrameMessageFilter::RenderFrameMessageFilter(
  37     int render_process_id,
  38     RenderWidgetHelper* render_widget_helper)
  39     : render_process_id_(render_process_id),
  40       render_widget_helper_(render_widget_helper) {
  41 }
  42
  43 RenderFrameMessageFilter::~RenderFrameMessageFilter() {
  44 }
  45
  46 bool RenderFrameMessageFilter::OnMessageReceived(const IPC::Message& message,
  47                                                  bool* message_was_ok) {
  48   bool handled = true;
  49   IPC_BEGIN_MESSAGE_MAP_EX(RenderFrameMessageFilter, message, *message_was_ok)
  50     IPC_MESSAGE_HANDLER(FrameHostMsg_CreateChildFrame, OnCreateChildFrame)
  51     IPC_MESSAGE_UNHANDLED(handled = false)
  52   IPC_END_MESSAGE_MAP_EX()
  53
  54   return handled;
  55 }
  56
  57 void RenderFrameMessageFilter::OnCreateChildFrame(
  58     int parent_render_frame_id,
  59     int64 parent_frame_id,
  60     int64 frame_id,
  61     const std::string& frame_name,
  62     int* new_render_frame_id) {
  63   *new_render_frame_id = render_widget_helper_->GetNextRoutingID();
  64   BrowserThread::PostTask(
  65       BrowserThread::UI, FROM_HERE,
  66       base::Bind(&CreateChildFrameOnUI, render_process_id_,
  67                  parent_render_frame_id, parent_frame_id, frame_id, frame_name,
  68                  *new_render_frame_id));
  69 }
  70
  71 }  // namespace content