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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 PRINTING_PRINT_DIALOG_GTK_INTERFACE_H_
      6 #define PRINTING_PRINT_DIALOG_GTK_INTERFACE_H_
      7 
      8 #include "base/strings/string16.h"
      9 #include "printing/printing_context_gtk.h"
     10 #include "ui/gfx/native_widget_types.h"
     11 
     12 namespace printing {
     13 
     14 class Metafile;
     15 class PrintSettings;
     16 
     17 // An interface for GTK printing dialogs. Classes that live outside of
     18 // printing/ can implement this interface and get threading requirements
     19 // correct without exposing those requirements to printing/.
     20 class PrintDialogGtkInterface {
     21  public:
     22   // Tell the dialog to use the default print setting.
     23   virtual void UseDefaultSettings() = 0;
     24 
     25   // Update the dialog to use |job_settings| and |ranges|, where |job_settings|
     26   // is a dictionary of settings with possible keys from
     27   // printing/print_job_constants.h. Only used when printing without the system
     28   // print dialog. E.g. for Print Preview. Returns false on error.
     29   virtual bool UpdateSettings(const base::DictionaryValue& job_settings,
     30                               const PageRanges& ranges,
     31                               PrintSettings* settings) = 0;
     32 
     33   // Shows the dialog and handles the response with |callback|. Only used when
     34   // printing with the native print dialog.
     35   virtual void ShowDialog(
     36       gfx::NativeView parent_view,
     37       bool has_selection,
     38       const PrintingContextGtk::PrintSettingsCallback& callback) = 0;
     39 
     40   // Prints the document named |document_name| contained in |metafile|.
     41   // Called from the print worker thread. Once called, the
     42   // PrintDialogGtkInterface instance should not be reused.
     43   virtual void PrintDocument(const Metafile* metafile,
     44                              const string16& document_name) = 0;
     45 
     46   // Same as AddRef/Release, but with different names since
     47   // PrintDialogGtkInterface does not inherit from RefCounted.
     48   virtual void AddRefToDialog() = 0;
     49   virtual void ReleaseDialog() = 0;
     50 
     51  protected:
     52   virtual ~PrintDialogGtkInterface() {}
     53 };
     54 
     55 }  // namespace printing
     56 
     57 #endif  // PRINTING_PRINT_DIALOG_GTK_INTERFACE_H_
     58