text: // Copyright (c) 2012 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 "chrome/browser/devtools/browser_list_tabcontents_provider.h"
  
  #include "base/path_service.h"
  #include "base/string_number_conversions.h"
  #include "chrome/browser/extensions/extension_host.h"
  #include "chrome/browser/extensions/extension_service.h"
  #include "chrome/browser/extensions/extension_system.h"
  #include "chrome/browser/history/top_sites.h"
  #include "chrome/browser/profiles/profile.h"
  #include "chrome/browser/profiles/profile_manager.h"
  #include "chrome/browser/ui/browser.h"
  #include "chrome/browser/ui/browser_commands.h"
  #include "chrome/browser/ui/browser_iterator.h"
  #include "chrome/browser/ui/browser_list.h"
  #include "chrome/browser/ui/browser_tabstrip.h"
  #include "chrome/browser/ui/host_desktop.h"
  #include "chrome/browser/ui/tab_contents/tab_contents_iterator.h"
  #include "chrome/common/chrome_paths.h"
  #include "content/public/browser/web_contents.h"
  #include "content/public/common/url_constants.h"
  #include "grit/devtools_discovery_page_resources.h"
  #include "net/socket/tcp_listen_socket.h"
  #include "net/url_request/url_request_context_getter.h"
  #include "ui/base/resource/resource_bundle.h"
  
  using content::DevToolsHttpHandlerDelegate;
  using content::RenderViewHost;
  
  BrowserListTabContentsProvider::BrowserListTabContentsProvider(
      Profile* profile,
      chrome::HostDesktopType host_desktop_type)
      : profile_(profile), host_desktop_type_(host_desktop_type) {
  }
  
  BrowserListTabContentsProvider::~BrowserListTabContentsProvider() {
  }
  
  std::string BrowserListTabContentsProvider::GetDiscoveryPageHTML() {
    std::set<Profile*> profiles;
    for (chrome::BrowserIterator it; !it.done(); it.Next())
      profiles.insert((*it)->profile());
  
    for (std::set<Profile*>::iterator it = profiles.begin();
         it != profiles.end(); ++it) {
      history::TopSites* ts = (*it)->GetTopSites();
      if (ts) {
        // TopSites updates itself after a delay. Ask TopSites to update itself
        // when we're about to show the remote debugging landing page.
        ts->SyncWithHistory();
      }
    }
    return ResourceBundle::GetSharedInstance().GetRawDataResource(
        IDR_DEVTOOLS_DISCOVERY_PAGE_HTML).as_string();
  }
  
  bool BrowserListTabContentsProvider::BundlesFrontendResources() {
    return true;
  }
  
  base::FilePath BrowserListTabContentsProvider::GetDebugFrontendDir() {
  #if defined(DEBUG_DEVTOOLS)
    base::FilePath inspector_dir;
    PathService::Get(chrome::DIR_INSPECTOR, &inspector_dir);
    return inspector_dir;
  #else
    return base::FilePath();
  #endif
  }
  
  std::string BrowserListTabContentsProvider::GetPageThumbnailData(
      const GURL& url) {
    for (chrome::BrowserIterator it; !it.done(); it.Next()) {
      Profile* profile = (*it)->profile();
      history::TopSites* top_sites = profile->GetTopSites();
      if (!top_sites)
        continue;
      scoped_refptr<base::RefCountedMemory> data;
      if (top_sites->GetPageThumbnail(url, &data))
        return std::string(
            reinterpret_cast<const char*>(data->front()), data->size());
    }
  
    return std::string();
  }
  
  RenderViewHost* BrowserListTabContentsProvider::CreateNewTarget() {
    const BrowserList* browser_list =
        BrowserList::GetInstance(host_desktop_type_);
  
    if (browser_list->empty())
      chrome::NewEmptyWindow(profile_, host_desktop_type_);
  
    if (browser_list->empty())
      return NULL;
  
    content::WebContents* web_contents = chrome::AddSelectedTabWithURL(
        browser_list->get(0),
        GURL(chrome::kAboutBlankURL),
        content::PAGE_TRANSITION_LINK);
    return web_contents->GetRenderViewHost();
  }
  
  content::DevToolsHttpHandlerDelegate::TargetType
  BrowserListTabContentsProvider::GetTargetType(content::RenderViewHost* rvh) {
    for (TabContentsIterator it; !it.done(); it.Next())
      if (rvh == it->GetRenderViewHost())
        return kTargetTypeTab;
  
    return kTargetTypeOther;
  }
  
  std::string BrowserListTabContentsProvider::GetViewDescription(
      content::RenderViewHost* rvh) {
    content::WebContents* web_contents =
        content::WebContents::FromRenderViewHost(rvh);
    if (!web_contents)
      return std::string();
  
    Profile* profile =
        Profile::FromBrowserContext(web_contents->GetBrowserContext());
    if (!profile)
      return std::string();
  
    extensions::ExtensionHost* extension_host =
        extensions::ExtensionSystem::Get(profile)->process_manager()->
            GetBackgroundHostForExtension(web_contents->GetURL().host());
  
    if (!extension_host || extension_host->host_contents() != web_contents)
      return std::string();
  
    return extension_host->extension()->name();
  }
  
  #if defined(DEBUG_DEVTOOLS)
  static int g_last_tethering_port_ = 9333;
  
  scoped_refptr<net::StreamListenSocket>
  BrowserListTabContentsProvider::CreateSocketForTethering(
      net::StreamListenSocket::Delegate* delegate,
      std::string* name) {
    if (g_last_tethering_port_ == 9444)
      g_last_tethering_port_ = 9333;
    int port = ++g_last_tethering_port_;
    *name = base::IntToString(port);
    return net::TCPListenSocket::CreateAndListen("127.0.0.1", port, delegate);
  }
  #else
  scoped_refptr<net::StreamListenSocket>
  BrowserListTabContentsProvider::CreateSocketForTethering(
      net::StreamListenSocket::Delegate* delegate,
      std::string* name) {
    return NULL;
  }
  #endif  // defined(DEBUG_DEVTOOLS)
  