| // Copyright 2013 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef UI_SHELL_DIALOGS_PRINT_SETTINGS_DIALOG_WIN_H_ |
| #define UI_SHELL_DIALOGS_PRINT_SETTINGS_DIALOG_WIN_H_ |
| |
| #include <ocidl.h> |
| #include <commdlg.h> |
| |
| #include "base/memory/ref_counted.h" |
| #include "base/memory/scoped_ptr.h" |
| #include "base/message_loop/message_loop.h" |
| #include "base/message_loop/message_loop_proxy.h" |
| #include "ui/shell_dialogs/base_shell_dialog_win.h" |
| #include "ui/shell_dialogs/shell_dialogs_export.h" |
| |
| namespace ui { |
| |
| // A thin wrapper around the native window print dialog that uses |
| // BaseShellDialog to have the dialog run on a background thread. |
| class SHELL_DIALOGS_EXPORT PrintSettingsDialogWin |
| : public base::RefCountedThreadSafe<PrintSettingsDialogWin>, |
| public BaseShellDialogImpl { |
| public: |
| class SHELL_DIALOGS_EXPORT Observer { |
| public: |
| virtual void PrintSettingsConfirmed(PRINTDLGEX* dialog_options) = 0; |
| virtual void PrintSettingsCancelled(PRINTDLGEX* dialog_options) = 0; |
| }; |
| typedef HRESULT(__stdcall* PrintDialogFunc)(PRINTDLGEX*); |
| |
| explicit PrintSettingsDialogWin(Observer* observer); |
| virtual ~PrintSettingsDialogWin(); |
| |
| // Called to open the system print dialog on a background thread. |
| // |print_dialog_func| should generally be ::PrintDlgEx, however alternate |
| // functions are used for testing. |owning_window| is the parent HWND, and |
| // |dialog_options| is passed to |print_dialog_func|. |
| void GetPrintSettings( |
| PrintDialogFunc print_dialog_func, |
| HWND owning_window, |
| PRINTDLGEX* dialog_options); |
| |
| private: |
| // A struct for holding all the state necessary for displaying the print |
| // settings dialog. |
| struct ExecutePrintSettingsParams { |
| ExecutePrintSettingsParams(RunState run_state, |
| HWND owner, |
| PrintDialogFunc print_dialog_func, |
| PRINTDLGEX* dialog_options) |
| : run_state(run_state), |
| owner(owner), |
| print_dialog_func(print_dialog_func), |
| dialog_options(dialog_options), |
| ui_proxy(base::MessageLoopForUI::current()->message_loop_proxy()) {} |
| |
| RunState run_state; |
| HWND owner; |
| PrintDialogFunc print_dialog_func; |
| PRINTDLGEX* dialog_options; |
| scoped_refptr<base::MessageLoopProxy> ui_proxy; |
| }; |
| |
| // Runs the print dialog. Should be run on the the BaseShellDialogImpl thread. |
| // Posts back to PrintSettingsCompleted on the UI thread on completion. |
| void ExecutePrintSettings(const ExecutePrintSettingsParams& params); |
| |
| // Handler for the result of the print settings dialog. Should be run on the |
| // UI thread, and notifies the observer of the result of the dialog. |
| void PrintSettingsCompleted(HRESULT hresult, |
| const ExecutePrintSettingsParams& params); |
| |
| // Observer that's notified when the dialog is confirmed or cancelled. |
| Observer* observer_; |
| |
| DISALLOW_COPY_AND_ASSIGN(PrintSettingsDialogWin); |
| }; |
| |
| } // namespace ui |
| |
| #endif // UI_SHELL_DIALOGS_PRINT_SETTINGS_DIALOG_WIN_H_ |