chrome/browser/ui/libgtk2ui/select_file_dialog_impl.h

   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 // This file implements common select dialog functionality between GTK and KDE.
   6
   7 #ifndef CHROME_BROWSER_UI_LIBGTK2UI_SELECT_FILE_DIALOG_IMPL_H_
   8 #define CHROME_BROWSER_UI_LIBGTK2UI_SELECT_FILE_DIALOG_IMPL_H_
   9
  10 #include <set>
  11
  12 #include "base/compiler_specific.h"
  13 #include "base/nix/xdg_util.h"
  14 #include "ui/aura/window.h"
  15 #include "ui/shell_dialogs/select_file_dialog.h"
  16 #include "ui/shell_dialogs/select_file_policy.h"
  17
  18 namespace libgtk2ui {
  19
  20 // Shared implementation SelectFileDialog used by SelectFileDialogImplGTK
  21 class SelectFileDialogImpl : public ui::SelectFileDialog {
  22  public:
  23   // Main factory method which returns correct type.
  24   static ui::SelectFileDialog* Create(Listener* listener,
  25                                       ui::SelectFilePolicy* policy);
  26
  27   // Factory method for creating a GTK-styled SelectFileDialogImpl
  28   static SelectFileDialogImpl* NewSelectFileDialogImplGTK(
  29       Listener* listener,
  30       ui::SelectFilePolicy* policy);
  31   // Factory method for creating a KDE-styled SelectFileDialogImpl
  32   static SelectFileDialogImpl* NewSelectFileDialogImplKDE(
  33       Listener* listener,
  34       ui::SelectFilePolicy* policy,
  35       base::nix::DesktopEnvironment desktop);
  36
  37   // Returns true if the SelectFileDialog class returned by
  38   // NewSelectFileDialogImplKDE will actually work.
  39   static bool CheckKDEDialogWorksOnUIThread();
  40
  41   // BaseShellDialog implementation.
  42   virtual void ListenerDestroyed() OVERRIDE;
  43
  44  protected:
  45   explicit SelectFileDialogImpl(Listener* listener,
  46                                 ui::SelectFilePolicy* policy);
  47   virtual ~SelectFileDialogImpl();
  48
  49   // SelectFileDialog implementation.
  50   // |params| is user data we pass back via the Listener interface.
  51   virtual void SelectFileImpl(
  52       Type type,
  53       const base::string16& title,
  54       const base::FilePath& default_path,
  55       const FileTypeInfo* file_types,
  56       int file_type_index,
  57       const base::FilePath::StringType& default_extension,
  58       gfx::NativeWindow owning_window,
  59       void* params) = 0;
  60
  61   // Wrapper for base::DirectoryExists() that allow access on the UI
  62   // thread. Use this only in the file dialog functions, where it's ok
  63   // because the file dialog has to do many stats anyway. One more won't
  64   // hurt too badly and it's likely already cached.
  65   bool CallDirectoryExistsOnUIThread(const base::FilePath& path);
  66
  67   // The file filters.
  68   FileTypeInfo file_types_;
  69
  70   // The index of the default selected file filter.
  71   // Note: This starts from 1, not 0.
  72   size_t file_type_index_;
  73
  74   // The type of dialog we are showing the user.
  75   Type type_;
  76
  77   // These two variables track where the user last saved a file or opened a
  78   // file so that we can display future dialogs with the same starting path.
  79   static base::FilePath* last_saved_path_;
  80   static base::FilePath* last_opened_path_;
  81
  82   DISALLOW_COPY_AND_ASSIGN(SelectFileDialogImpl);
  83 };
  84
  85 }  // namespace libgtk2ui
  86
  87 #endif  // CHROME_BROWSER_UI_LIBGTK2UI_SELECT_FILE_DIALOG_IMPL_H_