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      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 #ifndef CHROME_BROWSER_UI_PDF_PDF_TAB_HELPER_H_
      6 #define CHROME_BROWSER_UI_PDF_PDF_TAB_HELPER_H_
      7 
      8 #include <string>
      9 
     10 #include "base/callback.h"
     11 #include "base/memory/scoped_ptr.h"
     12 #include "content/public/browser/web_contents_observer.h"
     13 #include "content/public/browser/web_contents_user_data.h"
     14 #include "ipc/ipc_message.h"
     15 
     16 class OpenPDFInReaderPromptDelegate;
     17 
     18 namespace content {
     19 class WebContents;
     20 }
     21 
     22 // Per-tab class to handle PDF messages.
     23 class PDFTabHelper : public content::WebContentsObserver,
     24                      public content::WebContentsUserData<PDFTabHelper>  {
     25  public:
     26 
     27   explicit PDFTabHelper(content::WebContents* web_contents);
     28   virtual ~PDFTabHelper();
     29 
     30   OpenPDFInReaderPromptDelegate* open_in_reader_prompt() const {
     31     return open_in_reader_prompt_.get();
     32   }
     33 
     34   void ShowOpenInReaderPrompt(scoped_ptr<OpenPDFInReaderPromptDelegate> prompt);
     35 
     36  private:
     37   // content::WebContentsObserver overrides:
     38   virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
     39   virtual void DidNavigateMainFrame(
     40       const content::LoadCommittedDetails& details,
     41       const content::FrameNavigateParams& params) OVERRIDE;
     42 
     43   // Internal helpers ----------------------------------------------------------
     44 
     45   void UpdateLocationBar();
     46   void OnModalPromptForPasswordClosed(IPC::Message* reply_message,
     47                                       bool success,
     48                                       const base::string16& actual_value);
     49 
     50   // Message handlers.
     51   void OnHasUnsupportedFeature();
     52   void OnSaveURLAs(const GURL& url,
     53                    const content::Referrer& referrer);
     54   void OnUpdateContentRestrictions(int content_restrictions);
     55   void OnModalPromptForPassword(const std::string& prompt,
     56                                 IPC::Message* reply_message);
     57 
     58   // The model for the confirmation prompt to open a PDF in Adobe Reader.
     59   scoped_ptr<OpenPDFInReaderPromptDelegate> open_in_reader_prompt_;
     60 
     61   DISALLOW_COPY_AND_ASSIGN(PDFTabHelper);
     62 };
     63 
     64 #if !defined(TOOLKIT_GTK)
     65 typedef base::Callback<void(bool /* success */,
     66                             const base::string16& /* password */)>
     67                                 PasswordDialogClosedCallback;
     68 
     69 // Shows a tab-modal dialog to get a password for a PDF document.
     70 void ShowPDFPasswordDialog(content::WebContents* web_contents,
     71                            const base::string16& prompt,
     72                            const PasswordDialogClosedCallback& callback);
     73 #endif  // !TOOLKIT_GTK
     74 
     75 #endif  // CHROME_BROWSER_UI_PDF_PDF_TAB_HELPER_H_
     76