chrome/browser/tab_contents/tab_util.cc

   1 // Copyright (c) 2012 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 "chrome/browser/tab_contents/tab_util.h"
   6
   7 #include "chrome/browser/profiles/profile.h"
   8 #include "chrome/browser/ui/webui/chrome_web_ui_controller_factory.h"
   9 #include "chrome/common/chrome_switches.h"
  10 #include "content/public/browser/render_frame_host.h"
  11 #include "content/public/browser/render_view_host.h"
  12 #include "content/public/browser/site_instance.h"
  13 #include "content/public/browser/web_contents.h"
  14 #include "url/gurl.h"
  15
  16 #if defined(ENABLE_EXTENSIONS)
  17 #include "extensions/browser/extension_registry.h"
  18 #endif
  19
  20 using content::RenderFrameHost;
  21 using content::RenderViewHost;
  22 using content::SiteInstance;
  23 using content::WebContents;
  24
  25 namespace tab_util {
  26
  27 content::WebContents* GetWebContentsByID(int render_process_id,
  28                                          int render_view_id) {
  29   RenderViewHost* render_view_host =
  30       RenderViewHost::FromID(render_process_id, render_view_id);
  31   if (!render_view_host)
  32     return NULL;
  33   return WebContents::FromRenderViewHost(render_view_host);
  34 }
  35
  36 content::WebContents* GetWebContentsByFrameID(int render_process_id,
  37                                               int render_frame_id) {
  38   RenderFrameHost* render_frame_host =
  39       RenderFrameHost::FromID(render_process_id, render_frame_id);
  40   if (!render_frame_host)
  41     return NULL;
  42   return WebContents::FromRenderFrameHost(render_frame_host);
  43 }
  44
  45 SiteInstance* GetSiteInstanceForNewTab(Profile* profile,
  46                                        const GURL& url) {
  47   // If |url| is a WebUI or extension, we set the SiteInstance up front so that
  48   // we don't end up with an extra process swap on the first navigation.
  49   if (ChromeWebUIControllerFactory::GetInstance()->UseWebUIForURL(profile, url))
  50     return SiteInstance::CreateForURL(profile, url);
  51
  52 #if defined(ENABLE_EXTENSIONS)
  53    if (extensions::ExtensionRegistry::Get(
  54        profile)->enabled_extensions().GetHostedAppByURL(url))
  55      return SiteInstance::CreateForURL(profile, url);
  56 #endif
  57
  58   // We used to share the SiteInstance for same-site links opened in new tabs,
  59   // to leverage the in-memory cache and reduce process creation.  It now
  60   // appears that it is more useful to have such links open in a new process,
  61   // so we create new tabs in a new BrowsingInstance.
  62   return NULL;
  63 }
  64
  65 }  // namespace tab_util