src/xwalk/runtime/browser/android/xwalk_contents_client_bridge_base.cc

   1 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
   2 // Copyright (c) 2013 Intel Corporation. All rights reserved.
   3 // Use of this source code is governed by a BSD-style license that can be
   4 // found in the LICENSE file.
   5
   6 #include "xwalk/runtime/browser/android/xwalk_contents_client_bridge_base.h"
   7
   8 #include "content/public/browser/browser_thread.h"
   9 #include "content/public/browser/render_view_host.h"
  10 #include "content/public/browser/web_contents.h"
  11
  12 using content::BrowserThread;
  13 using content::WebContents;
  14
  15 namespace xwalk {
  16
  17 namespace {
  18
  19 const void* kXWalkContentsClientBridgeBase = &kXWalkContentsClientBridgeBase;
  20
  21 // This class is invented so that the UserData registry that we inject the
  22 // XWalkContentsClientBridgeBase object does not own and destroy it.
  23 class UserData : public base::SupportsUserData::Data {
  24  public:
  25   static XWalkContentsClientBridgeBase* GetContents(
  26       content::WebContents* web_contents) {
  27     if (!web_contents)
  28       return NULL;
  29     UserData* data = reinterpret_cast<UserData*>(
  30         web_contents->GetUserData(kXWalkContentsClientBridgeBase));
  31     return data ? data->contents_ : NULL;
  32   }
  33
  34   explicit UserData(XWalkContentsClientBridgeBase* ptr) : contents_(ptr) {}
  35  private:
  36   XWalkContentsClientBridgeBase* contents_;
  37
  38   DISALLOW_COPY_AND_ASSIGN(UserData);
  39 };
  40
  41 }  // namespace
  42
  43 // static
  44 void XWalkContentsClientBridgeBase::Associate(
  45     WebContents* web_contents,
  46     XWalkContentsClientBridgeBase* handler) {
  47   web_contents->SetUserData(kXWalkContentsClientBridgeBase,
  48                             new UserData(handler));
  49 }
  50
  51 // static
  52 XWalkContentsClientBridgeBase* XWalkContentsClientBridgeBase::FromWebContents(
  53     WebContents* web_contents) {
  54   return UserData::GetContents(web_contents);
  55 }
  56
  57 // static
  58 XWalkContentsClientBridgeBase* XWalkContentsClientBridgeBase::FromID(
  59     int render_process_id,
  60     int render_view_id) {
  61   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
  62   const content::RenderViewHost* rvh =
  63       content::RenderViewHost::FromID(render_process_id, render_view_id);
  64   if (!rvh) return NULL;
  65   content::WebContents* web_contents =
  66       content::WebContents::FromRenderViewHost(rvh);
  67   return UserData::GetContents(web_contents);
  68 }
  69
  70 XWalkContentsClientBridgeBase::~XWalkContentsClientBridgeBase() {
  71 }
  72
  73 }  // namespace xwalk