diff options
| author | Eric Dong <eric.dong@intel.com> | 2013-08-12 02:03:10 +0000 |
|---|---|---|
| committer | ydong10 <ydong10@6f19259b-4bc3-4df7-8a09-765794883524> | 2013-08-12 02:03:10 +0000 |
| commit | 253616154506e17ebd02c076f240748f57e36ac2 (patch) | |
| tree | ec886ff8a0e346411087fd0d363c4e8f33260e5e /MdeModulePkg/Universal/SetupBrowserDxe/Ui.h | |
| parent | 9b141c52e33fbbbc3763c983dd70a338d60e496a (diff) | |
| download | edk2-platforms-253616154506e17ebd02c076f240748f57e36ac2.tar.xz | |
Rollback patch 14537 & 14538, because patch 14537 is not tested by Laszlo Ersek, but i wrote it.
Signed-off-by: Eric Dong <eric.dong@intel.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@14539 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'MdeModulePkg/Universal/SetupBrowserDxe/Ui.h')
| -rw-r--r-- | MdeModulePkg/Universal/SetupBrowserDxe/Ui.h | 1067 |
1 files changed, 1067 insertions, 0 deletions
diff --git a/MdeModulePkg/Universal/SetupBrowserDxe/Ui.h b/MdeModulePkg/Universal/SetupBrowserDxe/Ui.h new file mode 100644 index 0000000000..03cb0cd753 --- /dev/null +++ b/MdeModulePkg/Universal/SetupBrowserDxe/Ui.h @@ -0,0 +1,1067 @@ +/** @file
+Private structure, MACRO and function definitions for User Interface related functionalities.
+
+Copyright (c) 2004 - 2013, Intel Corporation. All rights reserved.<BR>
+This program and the accompanying materials
+are licensed and made available under the terms and conditions of the BSD License
+which accompanies this distribution. The full text of the license may be found at
+http://opensource.org/licenses/bsd-license.php
+
+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+**/
+
+#ifndef _UI_H_
+#define _UI_H_
+
+//
+// Globals
+//
+#define REGULAR_NUMERIC 0
+#define TIME_NUMERIC 1
+#define DATE_NUMERIC 2
+
+#define SUBTITLE_INDENT 2
+
+
+//
+// It take 23 characters including the NULL to print a 64 bits number with "[" and "]".
+// pow(2, 64) = [18446744073709551616]
+//
+#define MAX_NUMERIC_INPUT_WIDTH 23
+
+typedef enum {
+ UiNoOperation,
+ UiSelect,
+ UiUp,
+ UiDown,
+ UiLeft,
+ UiRight,
+ UiReset,
+ UiPrevious,
+ UiPageUp,
+ UiPageDown,
+ UiHotKey,
+ UiMaxOperation
+} UI_SCREEN_OPERATION;
+
+typedef enum {
+ CfInitialization,
+ CfCheckSelection,
+ CfRepaint,
+ CfRefreshHighLight,
+ CfUpdateHelpString,
+ CfPrepareToReadKey,
+ CfReadKey,
+ CfScreenOperation,
+ CfUiSelect,
+ CfUiReset,
+ CfUiLeft,
+ CfUiRight,
+ CfUiUp,
+ CfUiPageUp,
+ CfUiPageDown,
+ CfUiDown,
+ CfUiDefault,
+ CfUiNoOperation,
+ CfExit,
+ CfUiHotKey,
+ CfMaxControlFlag
+} UI_CONTROL_FLAG;
+
+#define UI_ACTION_NONE 0
+#define UI_ACTION_REFRESH_FORM 1
+#define UI_ACTION_REFRESH_FORMSET 2
+#define UI_ACTION_EXIT 3
+
+typedef struct _UI_MENU_LIST UI_MENU_LIST;
+
+typedef struct {
+ EFI_HII_HANDLE Handle;
+
+ //
+ // Target formset/form/Question information
+ //
+ EFI_GUID FormSetGuid;
+ UINT16 FormId;
+ UINT16 QuestionId;
+ UINTN Sequence; // used for time/date only.
+
+ UINTN TopRow;
+ UINTN BottomRow;
+ UINTN PromptCol;
+ UINTN OptionCol;
+ UINTN CurrentRow;
+
+ //
+ // Ation for Browser to taken:
+ // UI_ACTION_NONE - navigation inside a form
+ // UI_ACTION_REFRESH_FORM - re-evaluate expressions and repaint form
+ // UI_ACTION_REFRESH_FORMSET - re-parse formset IFR binary
+ //
+ UINTN Action;
+
+ //
+ // Current selected fomset/form/Question
+ //
+ FORM_BROWSER_FORMSET *FormSet;
+ FORM_BROWSER_FORM *Form;
+ FORM_BROWSER_STATEMENT *Statement;
+
+ //
+ // Whether the Form is editable
+ //
+ BOOLEAN FormEditable;
+
+ UI_MENU_LIST *CurrentMenu;
+} UI_MENU_SELECTION;
+
+#define UI_MENU_OPTION_SIGNATURE SIGNATURE_32 ('u', 'i', 'm', 'm')
+#define UI_MENU_LIST_SIGNATURE SIGNATURE_32 ('u', 'i', 'm', 'l')
+
+typedef struct {
+ UINTN Signature;
+ LIST_ENTRY Link;
+
+ EFI_HII_HANDLE Handle;
+ FORM_BROWSER_STATEMENT *ThisTag;
+ UINT16 EntryNumber;
+
+ UINTN Row;
+ UINTN Col;
+ UINTN OptCol;
+ CHAR16 *Description;
+ UINTN Skip; // Number of lines
+
+ //
+ // Display item sequence for date/time
+ // Date: Month/Day/Year
+ // Sequence: 0 1 2
+ //
+ // Time: Hour : Minute : Second
+ // Sequence: 0 1 2
+ //
+ //
+ UINTN Sequence;
+
+ BOOLEAN GrayOut;
+ BOOLEAN ReadOnly;
+
+ //
+ // Whether user could change value of this item
+ //
+ BOOLEAN IsQuestion;
+} UI_MENU_OPTION;
+
+#define MENU_OPTION_FROM_LINK(a) CR (a, UI_MENU_OPTION, Link, UI_MENU_OPTION_SIGNATURE)
+
+struct _UI_MENU_LIST {
+ UINTN Signature;
+ LIST_ENTRY Link;
+
+ EFI_HII_HANDLE HiiHandle;
+ EFI_GUID FormSetGuid;
+ UINT16 FormId;
+ UINT16 QuestionId;
+ UINTN Sequence; // used for time/date only.
+
+ UI_MENU_LIST *Parent;
+ LIST_ENTRY ChildListHead;
+};
+
+#define UI_MENU_LIST_FROM_LINK(a) CR (a, UI_MENU_LIST, Link, UI_MENU_LIST_SIGNATURE)
+
+typedef struct _MENU_REFRESH_ENTRY MENU_REFRESH_ENTRY;
+struct _MENU_REFRESH_ENTRY {
+ MENU_REFRESH_ENTRY *Next;
+ UI_MENU_OPTION *MenuOption; // Describes the entry needing an update
+ UI_MENU_SELECTION *Selection;
+ UINTN CurrentColumn;
+ UINTN CurrentRow;
+ UINTN CurrentAttribute;
+ EFI_EVENT Event;
+};
+
+typedef struct {
+ UINT16 ScanCode;
+ UI_SCREEN_OPERATION ScreenOperation;
+} SCAN_CODE_TO_SCREEN_OPERATION;
+
+typedef struct {
+ UI_SCREEN_OPERATION ScreenOperation;
+ UI_CONTROL_FLAG ControlFlag;
+} SCREEN_OPERATION_T0_CONTROL_FLAG;
+
+
+extern LIST_ENTRY gMenuOption;
+extern LIST_ENTRY gMenuList;
+extern MENU_REFRESH_ENTRY *gMenuRefreshHead;
+extern UI_MENU_SELECTION *gCurrentSelection;
+extern BOOLEAN mHiiPackageListUpdated;
+
+//
+// Global Functions
+//
+/**
+ Initialize Menu option list.
+
+**/
+VOID
+UiInitMenu (
+ VOID
+ );
+
+/**
+ Initialize Menu option list.
+
+**/
+VOID
+UiInitMenuList (
+ VOID
+ );
+
+/**
+ Free Menu option linked list.
+
+**/
+VOID
+UiFreeMenu (
+ VOID
+ );
+
+/**
+ Create a menu with specified formset GUID and form ID, and add it as a child
+ of the given parent menu.
+
+ @param Parent The parent of menu to be added.
+ @param HiiHandle Hii handle related to this formset.
+ @param FormSetGuid The Formset Guid of menu to be added.
+ @param FormId The Form ID of menu to be added.
+
+ @return A pointer to the newly added menu or NULL if memory is insufficient.
+
+**/
+UI_MENU_LIST *
+UiAddMenuList (
+ IN OUT UI_MENU_LIST *Parent,
+ IN EFI_HII_HANDLE HiiHandle,
+ IN EFI_GUID *FormSetGuid,
+ IN UINT16 FormId
+ );
+
+/**
+ Search Menu with given FormId, FormSetGuid and Handle in all cached menu list.
+
+ @param Parent The parent of menu to search.
+ @param Handle Hii handle related to this formset.
+ @param FormSetGuid The Formset GUID of the menu to search.
+ @param FormId The Form ID of menu to search.
+
+ @return A pointer to menu found or NULL if not found.
+
+**/
+UI_MENU_LIST *
+UiFindChildMenuList (
+ IN UI_MENU_LIST *Parent,
+ IN EFI_HII_HANDLE Handle,
+ IN EFI_GUID *FormSetGuid,
+ IN UINT16 FormId
+ );
+
+/**
+ Search Menu with given Handle, FormSetGuid and FormId in all cached menu list.
+
+ @param Handle Hii handle related to this formset.
+ @param FormSetGuid The Formset GUID of the menu to search.
+ @param FormId The Form ID of menu to search.
+
+ @return A pointer to menu found or NULL if not found.
+
+**/
+UI_MENU_LIST *
+UiFindMenuList (
+ IN EFI_HII_HANDLE Handle,
+ IN EFI_GUID *FormSetGuid,
+ IN UINT16 FormId
+ );
+
+/**
+ Free Menu list linked list.
+
+ @param MenuListHead One Menu list point in the menu list.
+
+**/
+VOID
+UiFreeMenuList (
+ LIST_ENTRY *MenuListHead
+ );
+
+/**
+ Free Menu option linked list.
+
+**/
+VOID
+UiFreeRefreshList (
+ VOID
+ );
+
+/**
+ Add one menu option by specified description and context.
+
+ @param String String description for this option.
+ @param Handle Hii handle for the package list.
+ @param Form The form this statement belong to.
+ @param Statement Statement of this Menu Option.
+ @param NumberOfLines Display lines for this Menu Option.
+ @param MenuItemCount The index for this Option in the Menu.
+
+ @retval Pointer Pointer to the added Menu Option.
+
+**/
+UI_MENU_OPTION *
+UiAddMenuOption (
+ IN CHAR16 *String,
+ IN EFI_HII_HANDLE Handle,
+ IN FORM_BROWSER_FORM *Form,
+ IN FORM_BROWSER_STATEMENT *Statement,
+ IN UINT16 NumberOfLines,
+ IN UINT16 MenuItemCount
+ );
+
+/**
+ Display menu and wait for user to select one menu option, then return it.
+ If AutoBoot is enabled, then if user doesn't select any option,
+ after period of time, it will automatically return the first menu option.
+
+ @param Selection Menu selection.
+
+ @return Return the pointer of the menu which selected,
+ @return otherwise return NULL.
+
+**/
+EFI_STATUS
+UiDisplayMenu (
+ IN OUT UI_MENU_SELECTION *Selection
+ );
+
+/**
+ Free up the resource allocated for all strings required
+ by Setup Browser.
+
+**/
+VOID
+FreeBrowserStrings (
+ VOID
+ );
+
+/**
+ Process the goto op code, update the info in the selection structure.
+
+ @param Statement The statement belong to goto op code.
+ @param Selection The selection info.
+ @param Repaint Whether need to repaint the menu.
+ @param NewLine Whether need to create new line.
+
+ @retval EFI_SUCCESS The menu process successfully.
+ @return Other value if the process failed.
+**/
+EFI_STATUS
+ProcessGotoOpCode (
+ IN OUT FORM_BROWSER_STATEMENT *Statement,
+ IN OUT UI_MENU_SELECTION *Selection,
+ OUT BOOLEAN *Repaint,
+ OUT BOOLEAN *NewLine
+ );
+
+
+/**
+ The worker function that send the displays to the screen. On output,
+ the selection made by user is returned.
+
+ @param Selection On input, Selection tell setup browser the information
+ about the Selection, form and formset to be displayed.
+ On output, Selection return the screen item that is selected
+ by user.
+
+ @retval EFI_SUCCESS The page is displayed successfully.
+ @return Other value if the page failed to be diplayed.
+
+**/
+EFI_STATUS
+SetupBrowser (
+ IN OUT UI_MENU_SELECTION *Selection
+ );
+
+/**
+ Set Buffer to Value for Size bytes.
+
+ @param Buffer Memory to set.
+ @param Size Number of bytes to set
+ @param Value Value of the set operation.
+
+**/
+VOID
+SetUnicodeMem (
+ IN VOID *Buffer,
+ IN UINTN Size,
+ IN CHAR16 Value
+ );
+
+/**
+ Wait for a given event to fire, or for an optional timeout to expire.
+
+ @param Event The event to wait for
+ @param Timeout An optional timeout value in 100 ns units.
+ @param RefreshInterval Menu refresh interval (in seconds).
+
+ @retval EFI_SUCCESS Event fired before Timeout expired.
+ @retval EFI_TIME_OUT Timout expired before Event fired.
+
+**/
+EFI_STATUS
+UiWaitForSingleEvent (
+ IN EFI_EVENT Event,
+ IN UINT64 Timeout, OPTIONAL
+ IN UINT8 RefreshInterval OPTIONAL
+ );
+
+/**
+ Draw a pop up windows based on the dimension, number of lines and
+ strings specified.
+
+ @param ScreenWidth The width of the pop-up.
+ @param NumberOfLines The number of lines.
+ @param ... A series of text strings that displayed in the pop-up.
+
+**/
+VOID
+EFIAPI
+CreateMultiStringPopUp (
+ IN UINTN ScreenWidth,
+ IN UINTN NumberOfLines,
+ ...
+ );
+
+/**
+ Get string or password input from user.
+
+ @param MenuOption Pointer to the current input menu.
+ @param Prompt The prompt string shown on popup window.
+ @param StringPtr Old user input and destination for use input string.
+
+ @retval EFI_SUCCESS If string input is read successfully
+ @retval EFI_DEVICE_ERROR If operation fails
+
+**/
+EFI_STATUS
+ReadString (
+ IN UI_MENU_OPTION *MenuOption,
+ IN CHAR16 *Prompt,
+ IN OUT CHAR16 *StringPtr
+ );
+
+/**
+ Get selection for OneOf and OrderedList (Left/Right will be ignored).
+
+ @param Selection Pointer to current selection.
+ @param MenuOption Pointer to the current input menu.
+
+ @retval EFI_SUCCESS If Option input is processed successfully
+ @retval EFI_DEVICE_ERROR If operation fails
+
+**/
+EFI_STATUS
+GetSelectionInputPopUp (
+ IN UI_MENU_SELECTION *Selection,
+ IN UI_MENU_OPTION *MenuOption
+ );
+
+/**
+ This routine reads a numeric value from the user input.
+
+ @param Selection Pointer to current selection.
+ @param MenuOption Pointer to the current input menu.
+
+ @retval EFI_SUCCESS If numerical input is read successfully
+ @retval EFI_DEVICE_ERROR If operation fails
+
+**/
+EFI_STATUS
+GetNumericInput (
+ IN UI_MENU_SELECTION *Selection,
+ IN UI_MENU_OPTION *MenuOption
+ );
+
+/**
+ Update status bar on the bottom of menu.
+
+ @param Selection Current selection info.
+ @param MessageType The type of message to be shown.
+ @param Flags The flags in Question header.
+ @param State Set or clear.
+
+**/
+VOID
+UpdateStatusBar (
+ IN UI_MENU_SELECTION *Selection,
+ IN UINTN MessageType,
+ IN UINT8 Flags,
+ IN BOOLEAN State
+ );
+
+/**
+ Process Question Config.
+
+ @param Selection The UI menu selection.
+ @param Question The Question to be peocessed.
+
+ @retval EFI_SUCCESS Question Config process success.
+ @retval Other Question Config process fail.
+
+**/
+EFI_STATUS
+ProcessQuestionConfig (
+ IN UI_MENU_SELECTION *Selection,
+ IN FORM_BROWSER_STATEMENT *Question
+ );
+
+/**
+ Print Question Value according to it's storage width and display attributes.
+
+ @param Question The Question to be printed.
+ @param FormattedNumber Buffer for output string.
+ @param BufferSize The FormattedNumber buffer size in bytes.
+
+ @retval EFI_SUCCESS Print success.
+ @retval EFI_BUFFER_TOO_SMALL Buffer size is not enough for formatted number.
+
+**/
+EFI_STATUS
+PrintFormattedNumber (
+ IN FORM_BROWSER_STATEMENT *Question,
+ IN OUT CHAR16 *FormattedNumber,
+ IN UINTN BufferSize
+ );
+
+/**
+ Search an Option of a Question by its value.
+
+ @param Question The Question
+ @param OptionValue Value for Option to be searched.
+
+ @retval Pointer Pointer to the found Option.
+ @retval NULL Option not found.
+
+**/
+QUESTION_OPTION *
+ValueToOption (
+ IN FORM_BROWSER_STATEMENT *Question,
+ IN EFI_HII_VALUE *OptionValue
+ );
+
+/**
+ Return data element in an Array by its Index.
+
+ @param Array The data array.
+ @param Type Type of the data in this array.
+ @param Index Zero based index for data in this array.
+
+ @retval Value The data to be returned
+
+**/
+UINT64
+GetArrayData (
+ IN VOID *Array,
+ IN UINT8 Type,
+ IN UINTN Index
+ );
+
+/**
+ Set value of a data element in an Array by its Index.
+
+ @param Array The data array.
+ @param Type Type of the data in this array.
+ @param Index Zero based index for data in this array.
+ @param Value The value to be set.
+
+**/
+VOID
+SetArrayData (
+ IN VOID *Array,
+ IN UINT8 Type,
+ IN UINTN Index,
+ IN UINT64 Value
+ );
+
+/**
+ Check whether this value already in the array, if yes, return the index.
+
+ @param Array The data array.
+ @param Type Type of the data in this array.
+ @param Value The value to be find.
+ @param Index The index in the array which has same value with Value.
+
+ @retval TRUE Found the value in the array.
+ @retval FALSE Not found the value.
+
+**/
+BOOLEAN
+FindArrayData (
+ IN VOID *Array,
+ IN UINT8 Type,
+ IN UINT64 Value,
+ OUT UINTN *Index OPTIONAL
+ );
+
+/**
+ Process a Question's Option (whether selected or un-selected).
+
+ @param Selection Pointer to UI_MENU_SELECTION.
+ @param MenuOption The MenuOption for this Question.
+ @param Selected TRUE: if Question is selected.
+ @param OptionString Pointer of the Option String to be displayed.
+
+ @retval EFI_SUCCESS Question Option process success.
+ @retval Other Question Option process fail.
+
+**/
+EFI_STATUS
+ProcessOptions (
+ IN UI_MENU_SELECTION *Selection,
+ IN UI_MENU_OPTION *MenuOption,
+ IN BOOLEAN Selected,
+ OUT CHAR16 **OptionString
+ );
+
+/**
+ Process the help string: Split StringPtr to several lines of strings stored in
+ FormattedString and the glyph width of each line cannot exceed gHelpBlockWidth.
+
+ @param StringPtr The entire help string.
+ @param FormattedString The oupput formatted string.
+ @param EachLineWidth The string length of each line in the formatted string.
+ @param RowCount TRUE: if Question is selected.
+
+**/
+UINTN
+ProcessHelpString (
+ IN CHAR16 *StringPtr,
+ OUT CHAR16 **FormattedString,
+ OUT UINT16 *EachLineWidth,
+ IN UINTN RowCount
+ );
+
+/**
+ Update key's help imformation.
+
+ @param Selection Tell setup browser the information about the Selection
+ @param MenuOption The Menu option
+ @param Selected Whether or not a tag be selected
+
+**/
+VOID
+UpdateKeyHelp (
+ IN UI_MENU_SELECTION *Selection,
+ IN UI_MENU_OPTION *MenuOption,
+ IN BOOLEAN Selected
+ );
+
+/**
+ Clear retangle with specified text attribute.
+
+ @param LeftColumn Left column of retangle.
+ @param RightColumn Right column of retangle.
+ @param TopRow Start row of retangle.
+ @param BottomRow End row of retangle.
+ @param TextAttribute The character foreground and background.
+
+**/
+VOID
+ClearLines (
+ IN UINTN LeftColumn,
+ IN UINTN RightColumn,
+ IN UINTN TopRow,
+ IN UINTN BottomRow,
+ IN UINTN TextAttribute
+ );
+
+/**
+ Count the storage space of a Unicode string.
+
+ This function handles the Unicode string with NARROW_CHAR
+ and WIDE_CHAR control characters. NARROW_HCAR and WIDE_CHAR
+ does not count in the resultant output. If a WIDE_CHAR is
+ hit, then 2 Unicode character will consume an output storage
+ space with size of CHAR16 till a NARROW_CHAR is hit.
+
+ If String is NULL, then ASSERT ().
+
+ @param String The input string to be counted.
+
+ @return Storage space for the input string.
+
+**/
+UINTN
+GetStringWidth (
+ IN CHAR16 *String
+ );
+
+/**
+ Will copy LineWidth amount of a string in the OutputString buffer and return the
+ number of CHAR16 characters that were copied into the OutputString buffer.
+ In the code, it deals \r,\n,\r\n same as \n\r, also it not process the \r or \g.
+
+ @param InputString String description for this option.
+ @param LineWidth Width of the desired string to extract in CHAR16
+ characters
+ @param GlyphWidth The glyph width of the beging char in the string.
+ @param Index Where in InputString to start the copy process
+ @param OutputString Buffer to copy the string into
+
+ @return Returns the number of CHAR16 characters that were copied into the OutputString buffer.
+
+**/
+UINT16
+GetLineByWidth (
+ IN CHAR16 *InputString,
+ IN UINT16 LineWidth,
+ IN OUT UINT16 *GlyphWidth,
+ IN OUT UINTN *Index,
+ OUT CHAR16 **OutputString
+ );
+
+/**
+ Get the supported width for a particular op-code
+
+ @param Statement The FORM_BROWSER_STATEMENT structure passed in.
+ @param Handle The handle in the HII database being used
+
+ @return Returns the number of CHAR16 characters that is support.
+
+**/
+UINT16
+GetWidth (
+ IN FORM_BROWSER_STATEMENT *Statement,
+ IN EFI_HII_HANDLE Handle
+ );
+
+/**
+ Concatenate a narrow string to another string.
+
+ @param Destination The destination string.
+ @param Source The source string. The string to be concatenated.
+ to the end of Destination.
+
+**/
+VOID
+NewStrCat (
+ IN OUT CHAR16 *Destination,
+ IN CHAR16 *Source
+ );
+
+/**
+ Wait for a key to be pressed by user.
+
+ @param Key The key which is pressed by user.
+
+ @retval EFI_SUCCESS The function always completed successfully.
+
+**/
+EFI_STATUS
+WaitForKeyStroke (
+ OUT EFI_INPUT_KEY *Key
+ );
+
+/**
+ Reset stack pointer to begin of the stack.
+
+**/
+VOID
+ResetScopeStack (
+ VOID
+ );
+
+/**
+ Push the expression options onto the Stack.
+
+ @param Pointer Pointer to the current expression.
+ @param Level Which type this expression belong to. Form,
+ statement or option?
+
+ @retval EFI_SUCCESS The value was pushed onto the stack.
+ @retval EFI_OUT_OF_RESOURCES There is not enough system memory to grow the stack.
+
+**/
+EFI_STATUS
+PushConditionalExpression (
+ IN FORM_EXPRESSION *Pointer,
+ IN EXPRESS_LEVEL Level
+ );
+
+/**
+ Pop the expression options from the Stack
+
+ @param Level Which type this expression belong to. Form,
+ statement or option?
+
+ @retval EFI_SUCCESS The value was pushed onto the stack.
+ @retval EFI_OUT_OF_RESOURCES There is not enough system memory to grow the stack.
+
+**/
+EFI_STATUS
+PopConditionalExpression (
+ IN EXPRESS_LEVEL Level
+ );
+
+/**
+ Get the expression Buffer pointer.
+
+ @param Level Which type this expression belong to. Form,
+ statement or option?
+
+ @retval The start pointer of the expression buffer or NULL.
+
+**/
+FORM_EXPRESSION **
+GetConditionalExpressionList (
+ IN EXPRESS_LEVEL Level
+ );
+
+/**
+ Get the expression list count.
+
+ @param Level Which type this expression belong to. Form,
+ statement or option?
+
+ @retval >=0 The expression count
+ @retval -1 Input parameter error.
+
+**/
+INTN
+GetConditionalExpressionCount (
+ IN EXPRESS_LEVEL Level
+ );
+
+/**
+ Push an Operand onto the Stack
+
+ @param Operand Operand to push.
+
+ @retval EFI_SUCCESS The value was pushed onto the stack.
+ @retval EFI_OUT_OF_RESOURCES There is not enough system memory to grow the
+ stack.
+
+**/
+EFI_STATUS
+PushScope (
+ IN UINT8 Operand
+ );
+
+/**
+ Pop an Operand from the Stack
+
+ @param Operand Operand to pop.
+
+ @retval EFI_SUCCESS The value was pushed onto the stack.
+ @retval EFI_OUT_OF_RESOURCES There is not enough system memory to grow the
+ stack.
+
+**/
+EFI_STATUS
+PopScope (
+ OUT UINT8 *Operand
+ );
+
+/**
+ Reset stack pointer to begin of the stack.
+
+**/
+VOID
+ResetCurrentExpressionStack (
+ VOID
+ );
+
+/**
+ Push current expression onto the Stack
+
+ @param Pointer Pointer to current expression.
+
+ @retval EFI_SUCCESS The value was pushed onto the stack.
+ @retval EFI_OUT_OF_RESOURCES There is not enough system memory to grow the stack.
+
+**/
+EFI_STATUS
+PushCurrentExpression (
+ IN VOID *Pointer
+ );
+
+/**
+ Pop current expression from the Stack
+
+ @param Pointer Pointer to current expression to be pop.
+
+ @retval EFI_SUCCESS The value was pushed onto the stack.
+ @retval EFI_OUT_OF_RESOURCES There is not enough system memory to grow the stack.
+
+**/
+EFI_STATUS
+PopCurrentExpression (
+ OUT VOID **Pointer
+ );
+
+/**
+ Reset stack pointer to begin of the stack.
+
+**/
+VOID
+ResetMapExpressionListStack (
+ VOID
+ );
+
+/**
+ Push the list of map expression onto the Stack
+
+ @param Pointer Pointer to the list of map expression to be pushed.
+
+ @retval EFI_SUCCESS The value was pushed onto the stack.
+ @retval EFI_OUT_OF_RESOURCES There is not enough system memory to grow the stack.
+
+**/
+EFI_STATUS
+PushMapExpressionList (
+ IN VOID *Pointer
+ );
+
+/**
+ Pop the list of map expression from the Stack
+
+ @param Pointer Pointer to the list of map expression to be pop.
+
+ @retval EFI_SUCCESS The value was pushed onto the stack.
+ @retval EFI_OUT_OF_RESOURCES There is not enough system memory to grow the stack.
+
+**/
+EFI_STATUS
+PopMapExpressionList (
+ OUT VOID **Pointer
+ );
+
+/**
+ Get Form given its FormId.
+
+ @param FormSet The formset which contains this form.
+ @param FormId Id of this form.
+
+ @retval Pointer The form.
+ @retval NULL Specified Form is not found in the formset.
+
+**/
+FORM_BROWSER_FORM *
+IdToForm (
+ IN FORM_BROWSER_FORMSET *FormSet,
+ IN UINT16 FormId
+ );
+
+/**
+ Search a Question in Formset scope using its QuestionId.
+
+ @param FormSet The formset which contains this form.
+ @param Form The form which contains this Question.
+ @param QuestionId Id of this Question.
+
+ @retval Pointer The Question.
+ @retval NULL Specified Question not found in the form.
+
+**/
+FORM_BROWSER_STATEMENT *
+IdToQuestion (
+ IN FORM_BROWSER_FORMSET *FormSet,
+ IN FORM_BROWSER_FORM *Form,
+ IN UINT16 QuestionId
+ );
+
+/**
+ Zero extend integer/boolean/date/time to UINT64 for comparing.
+
+ @param Value HII Value to be converted.
+
+**/
+VOID
+ExtendValueToU64 (
+ IN EFI_HII_VALUE *Value
+ );
+
+/**
+ Compare two Hii value.
+
+ @param Value1 Expression value to compare on left-hand.
+ @param Value2 Expression value to compare on right-hand.
+ @param Result Return value after compare.
+ retval 0 Two operators equal.
+ return Positive value if Value1 is greater than Value2.
+ retval Negative value if Value1 is less than Value2.
+ @param HiiHandle Only required for string compare.
+
+ @retval other Could not perform compare on two values.
+ @retval EFI_SUCCESS Compare the value success.
+
+**/
+EFI_STATUS
+CompareHiiValue (
+ IN EFI_HII_VALUE *Value1,
+ IN EFI_HII_VALUE *Value2,
+ OUT INTN *Result,
+ IN EFI_HII_HANDLE HiiHandle OPTIONAL
+ );
+
+/**
+ Evaluate the result of a HII expression
+
+ If Expression is NULL, then ASSERT.
+
+ @param FormSet FormSet associated with this expression.
+ @param Form Form associated with this expression.
+ @param Expression Expression to be evaluated.
+
+ @retval EFI_SUCCESS The expression evaluated successfuly
+ @retval EFI_NOT_FOUND The Question which referenced by a QuestionId
+ could not be found.
+ @retval EFI_OUT_OF_RESOURCES There is not enough system memory to grow the
+ stack.
+ @retval EFI_ACCESS_DENIED The pop operation underflowed the stack
+ @retval EFI_INVALID_PARAMETER Syntax error with the Expression
+
+**/
+EFI_STATUS
+EvaluateExpression (
+ IN FORM_BROWSER_FORMSET *FormSet,
+ IN FORM_BROWSER_FORM *Form,
+ IN OUT FORM_EXPRESSION *Expression
+ );
+
+/**
+ Return the result of the expression list. Check the expression list and
+ return the highest priority express result.
+ Priority: DisableIf > SuppressIf > GrayOutIf > FALSE
+
+ @param ExpList The input expression list.
+ @param Evaluate Whether need to evaluate the expression first.
+ @param FormSet FormSet associated with this expression. Only
+ needed when Evaluate is TRUE
+ @param Form Form associated with this expression. Only
+ needed when Evaluate is TRUE
+
+ @retval EXPRESS_RESULT Return the higher priority express result.
+ DisableIf > SuppressIf > GrayOutIf > FALSE
+
+**/
+EXPRESS_RESULT
+EvaluateExpressionList (
+ IN FORM_EXPRESSION_LIST *ExpList,
+ IN BOOLEAN Evaluate,
+ IN FORM_BROWSER_FORMSET *FormSet, OPTIONAL
+ IN FORM_BROWSER_FORM *Form OPTIONAL
+ );
+
+#endif // _UI_H
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