chrome/browser/android/offline_pages/offline_page_web_contents_observer.h

   1 // Copyright 2015 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 #ifndef CHROME_BROWSER_ANDROID_OFFLINE_PAGES_OFFLINE_PAGE_WEB_CONTENTS_OBSERVER_H_
   6 #define CHROME_BROWSER_ANDROID_OFFLINE_PAGES_OFFLINE_PAGE_WEB_CONTENTS_OBSERVER_H_
   7
   8 #include "base/callback.h"
   9 #include "content/public/browser/web_contents.h"
  10 #include "content/public/browser/web_contents_observer.h"
  11 #include "content/public/browser/web_contents_user_data.h"
  12
  13 namespace offline_pages {
  14
  15 // Observes activities occurred in the page that is to be archived.
  16 class OfflinePageWebContentsObserver
  17     : public content::WebContentsObserver,
  18       public content::WebContentsUserData<OfflinePageWebContentsObserver> {
  19  public:
  20   ~OfflinePageWebContentsObserver() override;
  21
  22   bool is_document_loaded_in_main_frame() const {
  23     return is_document_loaded_in_main_frame_;
  24   }
  25
  26   void set_main_frame_document_loaded_callback(const base::Closure& callback) {
  27     main_frame_document_loaded_callback_ = callback;
  28   }
  29
  30   // content::WebContentsObserver:
  31   void DocumentLoadedInFrame(
  32       content::RenderFrameHost* render_frame_host) override;
  33   void DidNavigateMainFrame(
  34       const content::LoadCommittedDetails& details,
  35       const content::FrameNavigateParams& params) override;
  36   void RenderProcessGone(base::TerminationStatus status) override;
  37
  38  private:
  39   explicit OfflinePageWebContentsObserver(content::WebContents* web_contents);
  40   friend class content::WebContentsUserData<OfflinePageWebContentsObserver>;
  41
  42   // Removes the observer and clears the WebContents member.
  43   void CleanUp();
  44
  45   // Tracks whether the document of main frame has been loaded.
  46   bool is_document_loaded_in_main_frame_;
  47
  48   base::Closure main_frame_document_loaded_callback_;
  49
  50   DISALLOW_COPY_AND_ASSIGN(OfflinePageWebContentsObserver);
  51 };
  52
  53 }  // namespace offline_pages
  54
  55 #endif  // CHROME_BROWSER_ANDROID_OFFLINE_PAGES_OFFLINE_PAGE_WEB_CONTENTS_OBSERVER_H_