[mirror_edk2.git] / MdeModulePkg / Include / Protocol / DisplayProtocol.h

/** @file\r
  FormDiplay protocol to show Form\r
\r
Copyright (c) 2013, Intel Corporation. All rights reserved.<BR>\r
This program and the accompanying materials are licensed and made available under \r
the terms and conditions of the BSD License that accompanies this distribution.  \r
The full text of the license may be found at\r
http://opensource.org/licenses/bsd-license.php.                                            \r
\r
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,                     \r
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
\r
**/\r
\r
#ifndef __DISPLAY_PROTOCOL_H__\r
#define __DISPLAY_PROTOCOL_H__\r
\r
#include <Protocol/FormBrowser2.h>\r
\r
#define EDKII_FORM_DISPLAY_ENGINE_PROTOCOL_GUID  \\r
  { 0x9bbe29e9, 0xfda1, 0x41ec, { 0xad, 0x52, 0x45, 0x22, 0x13, 0x74, 0x2d, 0x2e } }\r
\r
// \r
// Do nothing.\r
//\r
#define BROWSER_ACTION_NONE         BIT16\r
//\r
// ESC Exit\r
//\r
#define BROWSER_ACTION_FORM_EXIT    BIT17\r
\r
#define BROWSER_SUCCESS             0x0\r
#define BROWSER_ERROR               BIT31\r
#define BROWSER_SUBMIT_FAIL         BROWSER_ERROR | 0x01\r
#define BROWSER_NO_SUBMIT_IF        BROWSER_ERROR | 0x02\r
#define BROWSER_FORM_NOT_FOUND      BROWSER_ERROR | 0x03\r
#define BROWSER_FORM_SUPPRESS       BROWSER_ERROR | 0x04\r
#define BROWSER_PROTOCOL_NOT_FOUND  BROWSER_ERROR | 0x05\r
\r
#define FORM_DISPLAY_ENGINE_STATEMENT_VERSION_1  0x10000\r
#define FORM_DISPLAY_ENGINE_VERSION_1            0x10000\r
\r
typedef struct {\r
  //\r
  // HII Data Type\r
  //\r
  UINT8               Type;\r
  //\r
  // Buffer Data and Length if Type is EFI_IFR_TYPE_BUFFER or EFI_IFR_TYPE_STRING\r
  //\r
  UINT8               *Buffer;\r
  UINT16              BufferLen;\r
  EFI_IFR_TYPE_VALUE  Value;\r
} EFI_HII_VALUE;\r
\r
#define DISPLAY_QUESTION_OPTION_SIGNATURE  SIGNATURE_32 ('Q', 'O', 'P', 'T')\r
\r
typedef struct {\r
  UINTN                  Signature;\r
  LIST_ENTRY             Link;\r
  //\r
  // OneOfOption Data\r
  //\r
  EFI_IFR_ONE_OF_OPTION  *OptionOpCode;\r
  //\r
  // Option ImageId and AnimationId\r
  //\r
  EFI_IMAGE_ID           ImageId;\r
  EFI_ANIMATION_ID       AnimationId;\r
} DISPLAY_QUESTION_OPTION;\r
\r
#define DISPLAY_QUESTION_OPTION_FROM_LINK(a)  CR (a, DISPLAY_QUESTION_OPTION, Link, DISPLAY_QUESTION_OPTION_SIGNATURE)\r
\r
typedef struct _FORM_DISPLAY_ENGINE_STATEMENT FORM_DISPLAY_ENGINE_STATEMENT;\r
typedef struct _FORM_DISPLAY_ENGINE_FORM      FORM_DISPLAY_ENGINE_FORM;\r
\r
#define STATEMENT_VALID             0x0\r
#define STATEMENT_INVALID           BIT31\r
\r
#define INCOSISTENT_IF_TRUE         STATEMENT_INVALID | 0x01\r
#define WARNING_IF_TRUE             STATEMENT_INVALID | 0x02\r
#define STRING_TOO_LONG             STATEMENT_INVALID | 0x03\r
// ... to be extended.\r
\r
typedef struct {\r
  //\r
  // StringId for INCONSITENT_IF or WARNING_IF\r
  //\r
  EFI_STRING_ID  StringId;\r
  //\r
  // TimeOut for WARNING_IF\r
  //\r
  UINT8          TimeOut;\r
} STATEMENT_ERROR_INFO;\r
\r
/**\r
  Perform value check for a question.\r
  \r
  @param  Form       Form where Statement is in.\r
  @param  Statement  Value will check for it.\r
  @param  Value      New value will be checked.\r
  \r
  @retval Status     Value Status\r
\r
**/\r
typedef\r
UINT32\r
(EFIAPI *VALIDATE_QUESTION) (\r
  IN FORM_DISPLAY_ENGINE_FORM      *Form,\r
  IN FORM_DISPLAY_ENGINE_STATEMENT *Statement,\r
  IN EFI_HII_VALUE                 *Value, \r
  OUT STATEMENT_ERROR_INFO         *ErrorInfo\r
  );\r
\r
/**\r
  Perform Password check. \r
  Passwork may be encrypted by driver that requires the specific check.\r
  \r
  @param  Form             Form where Password Statement is in.\r
  @param  Statement        Password statement\r
  @param  PasswordString   Password string to be checked. It may be NULL.\r
                           NULL means to restore password.\r
                           "" string can be used to checked whether old password does exist.\r
  \r
  @return Status     Status of Password check.\r
**/\r
typedef\r
EFI_STATUS\r
(EFIAPI *PASSWORD_CHECK) (\r
  IN FORM_DISPLAY_ENGINE_FORM      *Form,\r
  IN FORM_DISPLAY_ENGINE_STATEMENT *Statement,\r
  IN EFI_STRING                    PasswordString  OPTIONAL\r
  );\r
\r
#define FORM_DISPLAY_ENGINE_STATEMENT_SIGNATURE  SIGNATURE_32 ('F', 'S', 'T', 'A')\r
\r
//\r
// Attribute for Statement and Form\r
//\r
#define HII_DISPLAY_GRAYOUT          BIT0\r
#define HII_DISPLAY_LOCK             BIT1\r
#define HII_DISPLAY_READONLY         BIT2\r
#define HII_DISPLAY_MODAL            BIT3\r
\r
struct _FORM_DISPLAY_ENGINE_STATEMENT{\r
  UINTN                 Signature;\r
  //\r
  // Version for future structure extension\r
  //\r
  UINTN                 Version;\r
  //\r
  // link to all the statement which will show in the display form.\r
  //\r
  LIST_ENTRY            DisplayLink;\r
  //\r
  // Pointer to statement opcode.\r
  // for Guided Opcode. All buffers will be here if GUIDED opcode scope is set.\r
  //\r
  EFI_IFR_OP_HEADER     *OpCode;\r
  //\r
  // Question CurrentValue\r
  //\r
  EFI_HII_VALUE         CurrentValue;\r
  //\r
  // Flag to describe whether setting is changed or not.\r
  // Displayer may depend on it to show it with the different color. \r
  //\r
  BOOLEAN               SettingChangedFlag;\r
  //\r
  // nested Statement list inside of EFI_IFR_SUBTITLE\r
  //\r
  LIST_ENTRY            NestStatementList;\r
  //\r
  // nested EFI_IFR_ONE_OF_OPTION list (QUESTION_OPTION)\r
  //\r
  LIST_ENTRY            OptionListHead;\r
  //\r
  // Statement attributes: GRAYOUT, LOCK and READONLY\r
  //\r
  UINT32                Attribute;\r
\r
  //\r
  // ValidateQuestion to do InconsistIf check\r
  // It may be NULL if any value is valid.\r
  //\r
  VALIDATE_QUESTION     ValidateQuestion;\r
  \r
  //\r
  // Password additional check. It may be NULL when the additional check is not required.\r
  //\r
  PASSWORD_CHECK        PasswordCheck;\r
\r
  //\r
  // Statement ImageId and AnimationId\r
  //\r
  EFI_IMAGE_ID          ImageId;\r
  EFI_ANIMATION_ID      AnimationId;\r
};\r
\r
#define FORM_DISPLAY_ENGINE_STATEMENT_FROM_LINK(a)  CR (a, FORM_DISPLAY_ENGINE_STATEMENT, DisplayLink, FORM_DISPLAY_ENGINE_STATEMENT_SIGNATURE)\r
\r
#define BROWSER_HOT_KEY_SIGNATURE  SIGNATURE_32 ('B', 'H', 'K', 'S')\r
\r
typedef struct {\r
  UINTN                 Signature;\r
  LIST_ENTRY            Link;\r
  \r
  EFI_INPUT_KEY         *KeyData;\r
  //\r
  // Action is Discard, Default, Submit, Reset and Exit.\r
  //\r
  UINT32                 Action;\r
  UINT16                 DefaultId;\r
  //\r
  // HotKey Help String\r
  //\r
  EFI_STRING             HelpString;\r
} BROWSER_HOT_KEY;\r
\r
#define BROWSER_HOT_KEY_FROM_LINK(a)  CR (a, BROWSER_HOT_KEY, Link, BROWSER_HOT_KEY_SIGNATURE)\r
\r
#define FORM_DISPLAY_ENGINE_FORM_SIGNATURE  SIGNATURE_32 ('F', 'F', 'R', 'M')\r
\r
struct _FORM_DISPLAY_ENGINE_FORM {\r
  UINTN                Signature;\r
  //\r
  // Version for future structure extension\r
  //\r
  UINTN                Version;\r
  //\r
  // Statement List inside of Form\r
  //\r
  LIST_ENTRY            StatementListHead;\r
  //\r
  // Statement List outside of Form  \r
  //\r
  LIST_ENTRY            StatementListOSF;\r
  //\r
  // The input screen dimenstions info.\r
  //\r
  EFI_SCREEN_DESCRIPTOR *ScreenDimensions;\r
  //\r
  // FormSet information\r
  //\r
  EFI_GUID             FormSetGuid;\r
  //\r
  // HiiHandle can be used to get String, Image or Animation\r
  //\r
  EFI_HII_HANDLE       HiiHandle;\r
  \r
  //\r
  // Form ID and Title.\r
  //\r
  UINT16               FormId;\r
  EFI_STRING_ID        FormTitle;\r
  //\r
  // Form Attributes: Lock, Modal.\r
  //\r
  UINT32               Attribute;\r
  //\r
  // Flag to describe whether setting is changed or not.\r
  // Displayer depends on it to show ChangedFlag.\r
  //\r
  BOOLEAN              SettingChangedFlag;\r
\r
  //\r
  // Statement to be HighLighted\r
  //\r
  FORM_DISPLAY_ENGINE_STATEMENT *HighLightedStatement;\r
  //\r
  // Event to notify Displayer that FormData is updated to be refreshed.\r
  //\r
  EFI_EVENT              FormRefreshEvent;\r
  //\r
  // Additional Hotkey registered by BrowserEx protocol.\r
  //\r
  LIST_ENTRY             HotKeyListHead;\r
\r
  //\r
  // Form ImageId and AnimationId\r
  //\r
  EFI_IMAGE_ID         ImageId;\r
  EFI_ANIMATION_ID     AnimationId;\r
  \r
  //\r
  // If Status is error, display needs to handle it.  \r
  //\r
  UINT32               BrowserStatus;\r
  //\r
  // String for error status. It may be NULL. \r
  //\r
  EFI_STRING           ErrorString;\r
};\r
\r
#define FORM_DISPLAY_ENGINE_FORM_FROM_LINK(a)  CR (a, FORM_DISPLAY_ENGINE_FORM, Link, FORM_DISPLAY_ENGINE_FORM_SIGNATURE)\r
\r
typedef struct {\r
  FORM_DISPLAY_ENGINE_STATEMENT  *SelectedStatement; // Selected Statement and InputValue\r
  \r
  EFI_HII_VALUE                  InputValue;\r
  \r
  UINT32                         Action;             // If SelectedStatement is NULL, Action will be used.\r
                                                     // Trig Action (Discard, Default, Submit, Reset and Exit)\r
  UINT16                         DefaultId;\r
} USER_INPUT;\r
\r
/**\r
  Display one form, and return user input.\r
  \r
  @param FormData                Form Data to be shown.\r
  @param UserInputData           User input data.\r
  \r
  @retval EFI_SUCCESS            Form Data is shown, and user input is got.\r
**/\r
typedef\r
EFI_STATUS\r
(EFIAPI *FORM_DISPLAY) (\r
  IN FORM_DISPLAY_ENGINE_FORM  *FormData,\r
  OUT USER_INPUT               *UserInputData\r
);\r
\r
/**\r
  Exit Display and Clear Screen to the original state.\r
\r
**/\r
typedef\r
VOID\r
(EFIAPI *EXIT_DISPLAY) (\r
  VOID\r
);\r
\r
/**\r
  Confirm how to handle the changed data. \r
  \r
  @return Action of Submit, Discard and None\r
**/\r
typedef\r
UINTN\r
(EFIAPI *CONFIRM_DATA_CHANGE) (\r
  VOID\r
);\r
\r
typedef struct {\r
  FORM_DISPLAY        FormDisplay;\r
  EXIT_DISPLAY        ExitDisplay;\r
  CONFIRM_DATA_CHANGE ConfirmDataChange;\r
} EDKII_FORM_DISPLAY_ENGINE_PROTOCOL;\r
\r
extern EFI_GUID gEdkiiFormDisplayEngineProtocolGuid;\r
#endif\r
Commit	Line	Data
7c6c064c ED	1	/** @file\r
	2	FormDiplay protocol to show Form\r
	3	\r
	4	Copyright (c) 2013, Intel Corporation. All rights reserved.<BR>\r
	5	This program and the accompanying materials are licensed and made available under \r
	6	the terms and conditions of the BSD License that accompanies this distribution. \r
	7	The full text of the license may be found at\r
	8	http://opensource.org/licenses/bsd-license.php. \r
	9	\r
	10	THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, \r
	11	WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
	12	\r
	13	**/\r
	14	\r
	15	#ifndef __DISPLAY_PROTOCOL_H__\r
	16	#define __DISPLAY_PROTOCOL_H__\r
	17	\r
	18	#include <Protocol/FormBrowser2.h>\r
	19	\r
	20	#define EDKII_FORM_DISPLAY_ENGINE_PROTOCOL_GUID \\r
	21	{ 0x9bbe29e9, 0xfda1, 0x41ec, { 0xad, 0x52, 0x45, 0x22, 0x13, 0x74, 0x2d, 0x2e } }\r
	22	\r
	23	// \r
	24	// Do nothing.\r
	25	//\r
	26	#define BROWSER_ACTION_NONE BIT16\r
	27	//\r
	28	// ESC Exit\r
	29	//\r
	30	#define BROWSER_ACTION_FORM_EXIT BIT17\r
	31	\r
	32	#define BROWSER_SUCCESS 0x0\r
	33	#define BROWSER_ERROR BIT31\r
	34	#define BROWSER_SUBMIT_FAIL BROWSER_ERROR \| 0x01\r
	35	#define BROWSER_NO_SUBMIT_IF BROWSER_ERROR \| 0x02\r
	36	#define BROWSER_FORM_NOT_FOUND BROWSER_ERROR \| 0x03\r
	37	#define BROWSER_FORM_SUPPRESS BROWSER_ERROR \| 0x04\r
	38	#define BROWSER_PROTOCOL_NOT_FOUND BROWSER_ERROR \| 0x05\r
	39	\r
	40	#define FORM_DISPLAY_ENGINE_STATEMENT_VERSION_1 0x10000\r
	41	#define FORM_DISPLAY_ENGINE_VERSION_1 0x10000\r
	42	\r
	43	typedef struct {\r
	44	//\r
	45	// HII Data Type\r
	46	//\r
	47	UINT8 Type;\r
	48	//\r
	49	// Buffer Data and Length if Type is EFI_IFR_TYPE_BUFFER or EFI_IFR_TYPE_STRING\r
	50	//\r
	51	UINT8 *Buffer;\r
	52	UINT16 BufferLen;\r
	53	EFI_IFR_TYPE_VALUE Value;\r
	54	} EFI_HII_VALUE;\r
	55	\r
	56	#define DISPLAY_QUESTION_OPTION_SIGNATURE SIGNATURE_32 ('Q', 'O', 'P', 'T')\r
	57	\r
	58	typedef struct {\r
	59	UINTN Signature;\r
	60	LIST_ENTRY Link;\r
	61	//\r
	62	// OneOfOption Data\r
	63	//\r
	64	EFI_IFR_ONE_OF_OPTION *OptionOpCode;\r
65	//\r
66	// Option ImageId and AnimationId\r
67	//\r
68	EFI_IMAGE_ID ImageId;\r
69	EFI_ANIMATION_ID AnimationId;\r
70	} DISPLAY_QUESTION_OPTION;\r
71	\r
72	#define DISPLAY_QUESTION_OPTION_FROM_LINK(a) CR (a, DISPLAY_QUESTION_OPTION, Link, DISPLAY_QUESTION_OPTION_SIGNATURE)\r
73	\r
74	typedef struct _FORM_DISPLAY_ENGINE_STATEMENT FORM_DISPLAY_ENGINE_STATEMENT;\r
75	typedef struct _FORM_DISPLAY_ENGINE_FORM FORM_DISPLAY_ENGINE_FORM;\r
76	\r
77	#define STATEMENT_VALID 0x0\r
78	#define STATEMENT_INVALID BIT31\r
79	\r
80	#define INCOSISTENT_IF_TRUE STATEMENT_INVALID \| 0x01\r
81	#define WARNING_IF_TRUE STATEMENT_INVALID \| 0x02\r
82	#define STRING_TOO_LONG STATEMENT_INVALID \| 0x03\r
83	// ... to be extended.\r
84	\r
85	typedef struct {\r
86	//\r
87	// StringId for INCONSITENT_IF or WARNING_IF\r
88	//\r
89	EFI_STRING_ID StringId;\r
90	//\r
91	// TimeOut for WARNING_IF\r
92	//\r
93	UINT8 TimeOut;\r
94	} STATEMENT_ERROR_INFO;\r
95	\r
96	/**\r
97	Perform value check for a question.\r
98	\r
99	@param Form Form where Statement is in.\r
100	@param Statement Value will check for it.\r
101	@param Value New value will be checked.\r
102	\r
103	@retval Status Value Status\r
104	\r
105	**/\r
106	typedef\r
107	UINT32\r
108	(EFIAPI *VALIDATE_QUESTION) (\r
109	IN FORM_DISPLAY_ENGINE_FORM *Form,\r
110	IN FORM_DISPLAY_ENGINE_STATEMENT *Statement,\r
111	IN EFI_HII_VALUE *Value, \r
112	OUT STATEMENT_ERROR_INFO *ErrorInfo\r
113	);\r
114	\r
115	/**\r
116	Perform Password check. \r
117	Passwork may be encrypted by driver that requires the specific check.\r
118	\r
119	@param Form Form where Password Statement is in.\r
120	@param Statement Password statement\r
121	@param PasswordString Password string to be checked. It may be NULL.\r
122	NULL means to restore password.\r
123	"" string can be used to checked whether old password does exist.\r
124	\r
125	@return Status Status of Password check.\r
126	**/\r
127	typedef\r
128	EFI_STATUS\r
129	(EFIAPI *PASSWORD_CHECK) (\r
130	IN FORM_DISPLAY_ENGINE_FORM *Form,\r
131	IN FORM_DISPLAY_ENGINE_STATEMENT *Statement,\r
132	IN EFI_STRING PasswordString OPTIONAL\r
133	);\r
134	\r
135	#define FORM_DISPLAY_ENGINE_STATEMENT_SIGNATURE SIGNATURE_32 ('F', 'S', 'T', 'A')\r
136	\r
137	//\r
138	// Attribute for Statement and Form\r
139	//\r
140	#define HII_DISPLAY_GRAYOUT BIT0\r
141	#define HII_DISPLAY_LOCK BIT1\r
142	#define HII_DISPLAY_READONLY BIT2\r
143	#define HII_DISPLAY_MODAL BIT3\r
144	\r
145	struct _FORM_DISPLAY_ENGINE_STATEMENT{\r
146	UINTN Signature;\r
147	//\r
148	// Version for future structure extension\r
149	//\r
150	UINTN Version;\r
151	//\r
152	// link to all the statement which will show in the display form.\r
153	//\r
154	LIST_ENTRY DisplayLink;\r
155	//\r
156	// Pointer to statement opcode.\r
157	// for Guided Opcode. All buffers will be here if GUIDED opcode scope is set.\r
158	//\r
159	EFI_IFR_OP_HEADER *OpCode;\r
160	//\r
161	// Question CurrentValue\r
162	//\r
163	EFI_HII_VALUE CurrentValue;\r
164	//\r
165	// Flag to describe whether setting is changed or not.\r
166	// Displayer may depend on it to show it with the different color. \r
167	//\r
168	BOOLEAN SettingChangedFlag;\r
169	//\r
170	// nested Statement list inside of EFI_IFR_SUBTITLE\r
171	//\r
172	LIST_ENTRY NestStatementList;\r
173	//\r
174	// nested EFI_IFR_ONE_OF_OPTION list (QUESTION_OPTION)\r
175	//\r
176	LIST_ENTRY OptionListHead;\r
177	//\r
178	// Statement attributes: GRAYOUT, LOCK and READONLY\r
179	//\r
180	UINT32 Attribute;\r
181	\r
182	//\r
183	// ValidateQuestion to do InconsistIf check\r
184	// It may be NULL if any value is valid.\r
185	//\r
186	VALIDATE_QUESTION ValidateQuestion;\r
187	\r
188	//\r
189	// Password additional check. It may be NULL when the additional check is not required.\r
190	//\r
191	PASSWORD_CHECK PasswordCheck;\r
192	\r
193	//\r
194	// Statement ImageId and AnimationId\r
195	//\r
196	EFI_IMAGE_ID ImageId;\r
197	EFI_ANIMATION_ID AnimationId;\r
198	};\r
199	\r
200	#define FORM_DISPLAY_ENGINE_STATEMENT_FROM_LINK(a) CR (a, FORM_DISPLAY_ENGINE_STATEMENT, DisplayLink, FORM_DISPLAY_ENGINE_STATEMENT_SIGNATURE)\r
201	\r
202	#define BROWSER_HOT_KEY_SIGNATURE SIGNATURE_32 ('B', 'H', 'K', 'S')\r
203	\r
204	typedef struct {\r
205	UINTN Signature;\r
206	LIST_ENTRY Link;\r
207	\r
208	EFI_INPUT_KEY *KeyData;\r
209	//\r
210	// Action is Discard, Default, Submit, Reset and Exit.\r
211	//\r
212	UINT32 Action;\r
213	UINT16 DefaultId;\r
214	//\r
215	// HotKey Help String\r
216	//\r
217	EFI_STRING HelpString;\r
218	} BROWSER_HOT_KEY;\r
219	\r
220	#define BROWSER_HOT_KEY_FROM_LINK(a) CR (a, BROWSER_HOT_KEY, Link, BROWSER_HOT_KEY_SIGNATURE)\r
221	\r
222	#define FORM_DISPLAY_ENGINE_FORM_SIGNATURE SIGNATURE_32 ('F', 'F', 'R', 'M')\r
223	\r
224	struct _FORM_DISPLAY_ENGINE_FORM {\r
225	UINTN Signature;\r
226	//\r
227	// Version for future structure extension\r
228	//\r
229	UINTN Version;\r
230	//\r
231	// Statement List inside of Form\r
232	//\r
233	LIST_ENTRY StatementListHead;\r
234	//\r
235	// Statement List outside of Form \r
236	//\r
237	LIST_ENTRY StatementListOSF;\r
238	//\r
239	// The input screen dimenstions info.\r
240	//\r
241	EFI_SCREEN_DESCRIPTOR *ScreenDimensions;\r
242	//\r
243	// FormSet information\r
244	//\r
245	EFI_GUID FormSetGuid;\r
246	//\r
247	// HiiHandle can be used to get String, Image or Animation\r
248	//\r
249	EFI_HII_HANDLE HiiHandle;\r
250	\r
251	//\r
252	// Form ID and Title.\r
253	//\r
254	UINT16 FormId;\r
255	EFI_STRING_ID FormTitle;\r
256	//\r
257	// Form Attributes: Lock, Modal.\r
258	//\r
259	UINT32 Attribute;\r
260	//\r
261	// Flag to describe whether setting is changed or not.\r
262	// Displayer depends on it to show ChangedFlag.\r
263	//\r
264	BOOLEAN SettingChangedFlag;\r
265	\r
266	//\r
267	// Statement to be HighLighted\r
268	//\r
269	FORM_DISPLAY_ENGINE_STATEMENT *HighLightedStatement;\r
270	//\r
271	// Event to notify Displayer that FormData is updated to be refreshed.\r
272	//\r
273	EFI_EVENT FormRefreshEvent;\r
274	//\r
275	// Additional Hotkey registered by BrowserEx protocol.\r
276	//\r
277	LIST_ENTRY HotKeyListHead;\r
278	\r
279	//\r
280	// Form ImageId and AnimationId\r
281	//\r
282	EFI_IMAGE_ID ImageId;\r
283	EFI_ANIMATION_ID AnimationId;\r
284	\r
285	//\r
286	// If Status is error, display needs to handle it. \r
287	//\r
288	UINT32 BrowserStatus;\r
289	//\r
290	// String for error status. It may be NULL. \r
291	//\r
292	EFI_STRING ErrorString;\r
293	};\r
294	\r
295	#define FORM_DISPLAY_ENGINE_FORM_FROM_LINK(a) CR (a, FORM_DISPLAY_ENGINE_FORM, Link, FORM_DISPLAY_ENGINE_FORM_SIGNATURE)\r
296	\r
297	typedef struct {\r
298	FORM_DISPLAY_ENGINE_STATEMENT *SelectedStatement; // Selected Statement and InputValue\r
299	\r
300	EFI_HII_VALUE InputValue;\r
301	\r
302	UINT32 Action; // If SelectedStatement is NULL, Action will be used.\r
303	// Trig Action (Discard, Default, Submit, Reset and Exit)\r
304	UINT16 DefaultId;\r
305	} USER_INPUT;\r
306	\r
307	/**\r
308	Display one form, and return user input.\r
309	\r
310	@param FormData Form Data to be shown.\r
311	@param UserInputData User input data.\r
312	\r
313	@retval EFI_SUCCESS Form Data is shown, and user input is got.\r
314	**/\r
315	typedef\r
316	EFI_STATUS\r
317	(EFIAPI *FORM_DISPLAY) (\r
318	IN FORM_DISPLAY_ENGINE_FORM *FormData,\r
319	OUT USER_INPUT *UserInputData\r
320	);\r
321	\r
322	/**\r
323	Exit Display and Clear Screen to the original state.\r
324	\r
325	**/\r
326	typedef\r
327	VOID\r
328	(EFIAPI *EXIT_DISPLAY) (\r
329	VOID\r
330	);\r
331	\r
332	/**\r
333	Confirm how to handle the changed data. \r
334	\r
335	@return Action of Submit, Discard and None\r
336	**/\r
337	typedef\r
338	UINTN\r
339	(EFIAPI *CONFIRM_DATA_CHANGE) (\r
340	VOID\r
341	);\r
342	\r
343	typedef struct {\r
344	FORM_DISPLAY FormDisplay;\r
345	EXIT_DISPLAY ExitDisplay;\r
346	CONFIRM_DATA_CHANGE ConfirmDataChange;\r
347	} EDKII_FORM_DISPLAY_ENGINE_PROTOCOL;\r
348	\r
349	extern EFI_GUID gEdkiiFormDisplayEngineProtocolGuid;\r
350	#endif\r