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      1 // Copyright (c) 2011 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_PRINTING_PRINTING_MESSAGE_FILTER_H_
      6 #define CHROME_BROWSER_PRINTING_PRINTING_MESSAGE_FILTER_H_
      7 #pragma once
      8 
      9 #include "content/browser/browser_message_filter.h"
     10 
     11 #if defined(OS_WIN)
     12 #include "base/shared_memory.h"
     13 #endif
     14 
     15 class DictionaryValue;
     16 struct PrintHostMsg_ScriptedPrint_Params;
     17 
     18 namespace printing {
     19 class PrinterQuery;
     20 class PrintJobManager;
     21 }
     22 
     23 // This class filters out incoming printing related IPC messages for the
     24 // renderer process on the IPC thread.
     25 class PrintingMessageFilter : public BrowserMessageFilter {
     26  public:
     27   PrintingMessageFilter();
     28 
     29   // BrowserMessageFilter methods.
     30   virtual void OverrideThreadForMessage(const IPC::Message& message,
     31                                         BrowserThread::ID* thread);
     32   virtual bool OnMessageReceived(const IPC::Message& message,
     33                                  bool* message_was_ok);
     34 
     35  private:
     36   virtual ~PrintingMessageFilter();
     37 
     38 #if defined(OS_WIN)
     39   // Used to pass resulting EMF from renderer to browser in printing.
     40   void OnDuplicateSection(base::SharedMemoryHandle renderer_handle,
     41                           base::SharedMemoryHandle* browser_handle);
     42 #endif
     43 
     44 #if defined(OS_CHROMEOS)
     45   // Used to ask the browser allocate a temporary file for the renderer
     46   // to fill in resulting PDF in renderer.
     47   void OnAllocateTempFileForPrinting(base::FileDescriptor* temp_file_fd,
     48                                      int* sequence_number);
     49   void OnTempFileForPrintingWritten(int sequence_number);
     50 #endif
     51 
     52   // A javascript code requested to print the current page. This is done in two
     53   // steps and this is the first step. Get the print setting right here
     54   // synchronously. It will hang the I/O completely.
     55   void OnGetDefaultPrintSettings(IPC::Message* reply_msg);
     56   void OnGetDefaultPrintSettingsReply(
     57       scoped_refptr<printing::PrinterQuery> printer_query,
     58       IPC::Message* reply_msg);
     59 
     60   // A javascript code requested to print the current page. The renderer host
     61   // have to show to the user the print dialog and returns the selected print
     62   // settings.
     63   void OnScriptedPrint(const PrintHostMsg_ScriptedPrint_Params& params,
     64                        IPC::Message* reply_msg);
     65   void OnScriptedPrintReply(
     66       scoped_refptr<printing::PrinterQuery> printer_query,
     67       int routing_id,
     68       IPC::Message* reply_msg);
     69 
     70   void OnUpdatePrintSettings(int document_cookie,
     71                              const DictionaryValue& job_settings,
     72                              IPC::Message* reply_msg);
     73   void OnUpdatePrintSettingsReply(
     74       scoped_refptr<printing::PrinterQuery> printer_query,
     75       IPC::Message* reply_msg);
     76 
     77   printing::PrintJobManager* print_job_manager_;
     78 
     79   bool cloud_print_enabled_;
     80 
     81   DISALLOW_COPY_AND_ASSIGN(PrintingMessageFilter);
     82 };
     83 
     84 #endif  // CHROME_BROWSER_PRINTING_PRINTING_MESSAGE_FILTER_H_
     85