add Edit and Hexedit shared features.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@11437 6f19259b-4bc3-4df7-8a09-765794883524

8 files changed, 1265 insertions, 0 deletions

diff --git a/ShellPkg/Library/UefiShellDebug1CommandsLib/EditInputBar.c b/ShellPkg/Library/UefiShellDebug1CommandsLib/EditInputBar.c
new file mode 100644
index 0000000000..2c74e06741
--- /dev/null
+++ b/ShellPkg/Library/UefiShellDebug1CommandsLib/EditInputBar.c
@@ -0,0 +1,330 @@
+/** @file

+  Implements inputbar interface functions.

+

+  Copyright (c) 2005 - 2011, 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.

+

+**/

+

+#include "EditInputBar.h"

+#include "UefiShellDebug1CommandsLib.h"

+

+CHAR16  *mPrompt;        // Input bar mPrompt string.

+CHAR16  *mReturnString;  // The returned string.

+UINTN   StringSize;      // Size of mReturnString space size.

+

+/**

+  Initialize the input bar.

+**/

+VOID

+EFIAPI

+InputBarInit (

+  VOID

+  )

+{

+  mPrompt       = NULL;

+  mReturnString = NULL;

+  StringSize    = 0;

+}

+

+/**

+  Cleanup function for input bar.

+**/

+VOID

+EFIAPI

+InputBarCleanup (

+  VOID

+  )

+{

+  //

+  // free input bar's prompt and input string

+  //

+  SHELL_FREE_NON_NULL (mPrompt);

+  SHELL_FREE_NON_NULL (mReturnString);

+  mPrompt       = NULL;

+  mReturnString = NULL;

+}

+

+/**

+  Display the prompt.

+  Do the requesting of input.

+

+  @param[in]  LastColumn   The last printable column.

+  @param[in]  LastRow      The last printable row.

+**/

+VOID

+EFIAPI

+InputBarPrintInput (

+  IN UINTN LastColumn,

+  IN UINTN LastRow

+  )

+{

+  UINTN   Limit;

+  UINTN   Size;

+  CHAR16  *Buffer;

+  UINTN   Index;

+  UINTN   mPromptLen;

+

+  mPromptLen = StrLen (mPrompt);

+  Limit     = LastColumn - mPromptLen - 1;

+  Size      = StrLen (mReturnString);

+

+  //

+  // check whether the mPrompt length and input length will

+  // exceed limit

+  //

+  if (Size <= Limit) {

+    Buffer = mReturnString;

+  } else {

+    Buffer = mReturnString + Size - Limit;

+  }

+

+  gST->ConOut->EnableCursor (gST->ConOut, FALSE);

+

+  ShellPrintEx (((INT32)mPromptLen), ((INT32)LastRow) - 4, L"%s", Buffer);

+  Size = StrLen (Buffer);

+

+  //

+  // print " " after mPrompt

+  //

+  for (Index = Size; Index < Limit; Index++) {

+    ShellPrintEx ((INT32)(mPromptLen + Size), ((INT32)LastRow) - 4, L" ");

+  }

+

+  gST->ConOut->EnableCursor (gST->ConOut, TRUE);

+  gST->ConOut->SetCursorPosition (gST->ConOut, Size + mPromptLen, LastRow - 4);

+}

+

+typedef struct {

+  UINT32  Foreground : 4;

+  UINT32  Background : 4;

+} INPUT_BAR_COLOR_ATTRIBUTES;

+

+typedef union {

+  INPUT_BAR_COLOR_ATTRIBUTES  Colors;

+  UINTN                       Data;

+} INPUT_BAR_COLOR_UNION;

+

+

+/**

+  The refresh function for InputBar, it will wait for user input

+

+  @param[in] LastRow            The last printable row.

+  @param[in] LastColumn         The last printable column.

+

+  @retval EFI_SUCCESS           The operation was successful.

+**/

+EFI_STATUS

+EFIAPI

+InputBarRefresh (

+  UINTN LastRow,

+  UINTN LastColumn

+  )

+{

+  INPUT_BAR_COLOR_UNION   Orig;

+  INPUT_BAR_COLOR_UNION   New;

+  EFI_INPUT_KEY           Key;

+  UINTN                   Size;

+  EFI_STATUS              Status;

+  BOOLEAN                 NoDisplay;

+  UINTN                   Limit;

+  UINTN                   mPromptLen;

+  UINTN                   EventIndex;

+  UINTN                   CursorRow;

+  UINTN                   CursorCol;

+

+  //

+  // variable initialization

+  //

+  Size    = 0;

+  Status  = EFI_SUCCESS;

+

+  //

+  // back up the old screen attributes

+  //

+  CursorCol             = gST->ConOut->Mode->CursorColumn;

+  CursorRow             = gST->ConOut->Mode->CursorRow;

+  Orig.Data             = gST->ConOut->Mode->Attribute;

+  New.Colors.Foreground = Orig.Colors.Background;

+  New.Colors.Background = Orig.Colors.Foreground;

+

+  gST->ConOut->SetAttribute (gST->ConOut, New.Data);

+

+  //

+  // clear input bar

+  //

+  EditorClearLine (LastRow - 3, LastColumn, LastRow);

+

+  gST->ConOut->SetCursorPosition (gST->ConOut, 0, LastRow - 4);

+  ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN(STR_EDIT_LIBINPUTBAR_MAININPUTBAR), gShellDebug1HiiHandle, mPrompt);

+

+  //

+  // that's the maximum input length that can be displayed on screen

+  //

+  mPromptLen = StrLen (mPrompt);

+  Limit     = LastColumn - mPromptLen;

+

+  //

+  // this is a selection mPrompt, cursor will stay in edit area

+  // actually this is for search , search/replace

+  //

+  if (StrStr (mPrompt, L"Yes/No")) {

+    NoDisplay = TRUE;

+    gST->ConOut->SetCursorPosition (gST->ConOut, CursorCol, CursorRow);

+    gST->ConOut->SetAttribute (gST->ConOut, Orig.Data);

+  } else {

+    NoDisplay = FALSE;

+  }

+  //

+  // wait for user input

+  //

+  for (;;) {

+    gBS->WaitForEvent (1, &gST->ConIn->WaitForKey, &EventIndex);

+    Status = gST->ConIn->ReadKeyStroke (gST->ConIn, &Key);

+    if (EFI_ERROR (Status)) {

+      continue;

+    }

+    //

+    // pressed ESC

+    //

+    if (Key.ScanCode == SCAN_ESC) {

+      Size    = 0;

+      Status  = EFI_NOT_READY;

+      break;

+    }

+    //

+    // return pressed

+    //

+    if (Key.UnicodeChar == CHAR_LINEFEED || Key.UnicodeChar == CHAR_CARRIAGE_RETURN) {

+      break;

+    } else if (Key.UnicodeChar == CHAR_BACKSPACE) {

+      //

+      // backspace

+      //

+      if (Size > 0) {

+        Size--;

+        mReturnString[Size] = CHAR_NULL;

+        if (!NoDisplay) {

+

+          InputBarPrintInput (LastColumn, LastRow);

+

+        }

+      }

+    } else if (Key.UnicodeChar <= 127 && Key.UnicodeChar >= 32) {

+      //

+      // VALID ASCII char pressed

+      //

+      mReturnString[Size] = Key.UnicodeChar;

+

+      //

+      // should be less than specified length

+      //

+      if (Size >= StringSize) {

+        continue;

+      }

+

+      Size++;

+

+      mReturnString[Size] = CHAR_NULL;

+

+      if (!NoDisplay) {

+

+        InputBarPrintInput (LastColumn, LastRow);

+

+      } else {

+        //

+        // if just choose yes/no

+        //

+        break;

+      }

+

+    }

+  }

+

+  mReturnString[Size] = CHAR_NULL;

+  

+

+  //

+  // restore screen attributes

+  //

+  gST->ConOut->SetCursorPosition (gST->ConOut, CursorCol, CursorRow);

+  gST->ConOut->SetAttribute (gST->ConOut, Orig.Data);

+

+  return Status;

+}

+

+/**

+  SetPrompt and wait for input.

+

+  @param[in] Str                The prompt string.

+

+  @retval EFI_SUCCESS           The operation was successful.

+  @retval EFI_OUT_OF_RESOURCES  A memory allocation failed.

+**/

+EFI_STATUS

+EFIAPI

+InputBarSetPrompt (

+  IN CONST CHAR16 *Str

+  )

+{

+  //

+  // FREE the old mPrompt string

+  //

+  SHELL_FREE_NON_NULL (mPrompt);

+

+  mPrompt = CatSPrint (NULL, L"%s ", Str);

+  if (mPrompt == NULL) {

+    return EFI_OUT_OF_RESOURCES;

+  }

+

+  return EFI_SUCCESS;

+}

+

+/**

+  Set the size of the string in characters.

+

+  @param[in] Size               The max number of characters to accept.

+

+  @retval EFI_SUCCESS           The operation was successful.

+  @retval EFI_OUT_OF_RESOURCES  A memory allocation failed.

+**/

+EFI_STATUS

+EFIAPI

+InputBarSetStringSize (

+  UINTN   Size

+  )

+{

+  //

+  // free the old ReturnStirng

+  //

+  SHELL_FREE_NON_NULL (mReturnString);

+

+  StringSize = Size;

+  mReturnString = AllocateZeroPool ((StringSize + 1) * sizeof(mReturnString[0]));

+  if (mReturnString == NULL) {

+    return EFI_OUT_OF_RESOURCES;

+  }

+

+  return EFI_SUCCESS;

+}

+

+/**

+  Function to retrieve the input from the user.

+

+  @retval NULL                  No input has been received.

+  @return The string that was input.

+**/

+CONST CHAR16*

+EFIAPI

+InputBarGetString (

+  VOID

+  )

+{

+  return (mReturnString);

+}

diff --git a/ShellPkg/Library/UefiShellDebug1CommandsLib/EditInputBar.h b/ShellPkg/Library/UefiShellDebug1CommandsLib/EditInputBar.h
new file mode 100644
index 0000000000..c8557a83f1
--- /dev/null
+++ b/ShellPkg/Library/UefiShellDebug1CommandsLib/EditInputBar.h
@@ -0,0 +1,91 @@
+/** @file

+  Declares imputbar interface functions.

+

+  Copyright (c) 2005 - 2011, 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 _LIB_INPUT_BAR_H_

+#define _LIB_INPUT_BAR_H_

+

+/**

+  Initialize the input bar.

+**/

+VOID

+EFIAPI

+InputBarInit (

+  VOID

+  );

+

+/**

+  Cleanup function for input bar.

+**/

+VOID

+EFIAPI

+InputBarCleanup (

+  VOID

+  );

+

+/**

+  The refresh function for InputBar, it will wait for user input

+

+  @param[in] LastRow            The last printable row.

+  @param[in] LastColumn         The last printable column.

+

+  @retval EFI_SUCCESS           The operation was successful.

+**/

+EFI_STATUS

+EFIAPI

+InputBarRefresh (

+  UINTN LastRow,

+  UINTN LastColumn

+  );

+

+/**

+  SetPrompt and wait for input.

+

+  @param[in] Str                The prompt string.

+

+  @retval EFI_SUCCESS           The operation was successful.

+  @retval EFI_OUT_OF_RESOURCES  A memory allocation failed.

+**/

+EFI_STATUS

+EFIAPI

+InputBarSetPrompt (

+  IN CONST CHAR16 *Str

+  );

+

+/**

+  Set the size of the string in characters.

+

+  @param[in] Size               The max number of characters to accept.

+

+  @retval EFI_SUCCESS           The operation was successful.

+  @retval EFI_OUT_OF_RESOURCES  A memory allocation failed.

+**/

+EFI_STATUS

+EFIAPI

+InputBarSetStringSize (

+  UINTN   Size

+  );

+

+/**

+  Function to retrieve the input from the user.

+

+  @retval NULL                  No input has been received.

+  @return The string that was input.

+**/

+CONST CHAR16*

+EFIAPI

+InputBarGetString (

+  VOID

+  );

+

+#endif

diff --git a/ShellPkg/Library/UefiShellDebug1CommandsLib/EditMenuBar.c b/ShellPkg/Library/UefiShellDebug1CommandsLib/EditMenuBar.c
new file mode 100644
index 0000000000..390c707bc6
--- /dev/null
+++ b/ShellPkg/Library/UefiShellDebug1CommandsLib/EditMenuBar.c
@@ -0,0 +1,152 @@
+/** @file

+  implements menubar interface functions.

+

+  Copyright (c) 2005 - 2011, 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.

+

+**/

+

+#include "EditMenuBar.h"

+#include "UefiShellDebug1CommandsLib.h"

+#include "EditStatusBar.h"

+

+EDITOR_MENU_ITEM  *MenuItems;

+UINTN                 NumItems;

+

+/**

+  Cleanup function for a menu bar.  frees all allocated memory.

+**/

+VOID

+EFIAPI

+MenuBarCleanup (

+  VOID

+  )

+{

+  SHELL_FREE_NON_NULL(MenuItems);

+}

+

+/**

+  Initializa the menu bar with the specified items.

+

+  @param[in] Items              The items to display and their functions.

+

+  @retval EFI_SUCCESS           The initialization was correct.

+  @retval EFI_OUT_OF_RESOURCES  A memory allocation failed.

+**/

+EFI_STATUS

+EFIAPI

+MenuBarInit (

+  IN CONST EDITOR_MENU_ITEM  *Items

+  )

+{

+  CONST EDITOR_MENU_ITEM  *ItemsWalker;

+

+  for (NumItems = 0, ItemsWalker = Items ; ItemsWalker != NULL && ItemsWalker->Function != NULL ; ItemsWalker++,NumItems++);

+  

+  MenuItems = AllocateZeroPool((NumItems+1) * sizeof(EDITOR_MENU_ITEM));

+  if (MenuItems == NULL) {

+    return EFI_OUT_OF_RESOURCES;

+  }

+  CopyMem(MenuItems, Items, (NumItems+1) * sizeof(EDITOR_MENU_ITEM));

+  return EFI_SUCCESS;

+}

+

+/**

+  Refresh function for the menu bar.

+

+  @param[in] LastRow            The last printable row.

+  @param[in] LastCol            The last printable column.

+

+  @retval EFI_SUCCESS           The refresh was successful.

+**/

+EFI_STATUS

+EFIAPI

+MenuBarRefresh (

+  IN CONST UINTN LastRow,

+  IN CONST UINTN LastCol

+  )

+{

+  EDITOR_MENU_ITEM  *Item;

+  UINTN                 Col;

+  UINTN                 Row;

+  UINTN                 Width;

+  CHAR16                *NameString;

+  CHAR16                *FunctionKeyString;

+

+  //

+  // variable initialization

+  //

+  Col = 1;

+  Row = (LastRow - 2);

+

+  //

+  // clear menu bar rows

+  //

+  EditorClearLine (LastRow - 2, LastCol, LastRow);

+  EditorClearLine (LastRow - 1, LastCol, LastRow);

+  EditorClearLine (LastRow    , LastCol, LastRow);

+

+

+  //

+  // print out the menu items

+  //

+  for (Item = MenuItems; Item != NULL && Item->Function != NULL; Item++) {

+

+

+    NameString = HiiGetString(gShellDebug1HiiHandle, Item->NameToken, NULL);

+

+

+    Width             = MAX ((StrLen (NameString) + 6), 20);

+    if (((Col + Width) > LastCol)) {

+      Row++;

+      Col = 1;

+    }

+

+    FunctionKeyString = HiiGetString(gShellDebug1HiiHandle, Item->FunctionKeyToken, NULL);

+

+    ShellPrintEx ((INT32)(Col) - 1, (INT32)(Row) - 1, L"%E%s%N  %H%s%N  ", FunctionKeyString, NameString);

+

+    FreePool (NameString);

+    FreePool (FunctionKeyString);

+    Col += Width;

+  }

+

+  return EFI_SUCCESS;

+}

+

+/**

+  Function to dispatch the correct function based on a function key (F1...)

+

+  @param[in] Key                The pressed key.

+

+  @retval EFI_NOT_FOUND         The key was not a valid function key 

+                                (an error was sent to the status bar).

+  @return The return value from the called dispatch function.

+**/

+EFI_STATUS

+EFIAPI

+MenuBarDispatchFunctionKey (

+  IN CONST EFI_INPUT_KEY   *Key

+  )

+{

+  UINTN                 Index;

+

+  Index     = Key->ScanCode - SCAN_F1;

+

+  //

+  // check whether in range

+  //

+  if (Index > (NumItems - 1)) {

+    StatusBarSetStatusString (L"Unknown Command");

+    return EFI_SUCCESS;

+  }

+

+  return (MenuItems[Index].Function ());

+}

+

diff --git a/ShellPkg/Library/UefiShellDebug1CommandsLib/EditMenuBar.h b/ShellPkg/Library/UefiShellDebug1CommandsLib/EditMenuBar.h
new file mode 100644
index 0000000000..407f259fca
--- /dev/null
+++ b/ShellPkg/Library/UefiShellDebug1CommandsLib/EditMenuBar.h
@@ -0,0 +1,83 @@
+/** @file

+  Declares menubar interface functions.

+

+  Copyright (c) 2005 - 2011, 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 _LIB_MENU_BAR_H_

+#define _LIB_MENU_BAR_H_

+

+typedef

+EFI_STATUS

+(EFIAPI *MENU_ITEM_FUNCTION) (

+  VOID

+  );

+

+typedef struct _EDITOR_MENU_ITEM {

+  EFI_STRING_ID           NameToken;

+  CHAR16                  FunctionKeyToken;

+  MENU_ITEM_FUNCTION  Function;

+} EDITOR_MENU_ITEM;

+

+/**

+  Initializa the menu bar with the specified items.

+

+  @param[in] Items              The items to display and their functions.

+

+  @retval EFI_SUCCESS           The initialization was correct.

+  @retval EFI_OUT_OF_RESOURCES  A memory allocation failed.

+**/

+EFI_STATUS

+EFIAPI

+MenuBarInit (

+  IN CONST EDITOR_MENU_ITEM  *Items

+  );

+

+/**

+  Cleanup function for a menu bar.  frees all allocated memory.

+**/

+VOID

+EFIAPI

+MenuBarCleanup (

+  VOID

+  );

+

+/**

+  Refresh function for the menu bar.

+

+  @param[in] LastRow            The last printable row.

+  @param[in] LastCol            The last printable column.

+

+  @retval EFI_SUCCESS           The refresh was successful.

+**/

+EFI_STATUS

+EFIAPI

+MenuBarRefresh (

+  IN CONST UINTN LastRow,

+  IN CONST UINTN LastCol

+  );

+

+/**

+  Function to dispatch the correct function based on a function key (F1...)

+

+  @param[in] Key                The pressed key.

+

+  @retval EFI_NOT_FOUND         The key was not a valid function key 

+                                (an error was sent to the status bar).

+  @return The return value from the called dispatch function.

+**/

+EFI_STATUS

+EFIAPI

+MenuBarDispatchFunctionKey (

+  IN CONST EFI_INPUT_KEY   *Key

+  );

+

+#endif

diff --git a/ShellPkg/Library/UefiShellDebug1CommandsLib/EditStatusBar.c b/ShellPkg/Library/UefiShellDebug1CommandsLib/EditStatusBar.c
new file mode 100644
index 0000000000..3fd604d818
--- /dev/null
+++ b/ShellPkg/Library/UefiShellDebug1CommandsLib/EditStatusBar.c
@@ -0,0 +1,227 @@
+/** @file

+  Implements statusbar interface functions.

+

+  Copyright (c) 2005 - 2011, 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.

+

+**/

+

+#include "EditStatusBar.h"

+#include "UefiShellDebug1CommandsLib.h"

+

+CHAR16  *StatusString;

+BOOLEAN StatusBarNeedRefresh;

+BOOLEAN StatusStringChanged;

+

+/**

+  Initialization function for Status Bar.

+

+  @retval EFI_SUCCESS           The operation was successful.

+  @retval EFI_OUT_OF_RESOURCES  A memory allocation failed.

+  @sa StatusBarSetStatusString

+**/

+EFI_STATUS

+EFIAPI

+StatusBarInit (

+  VOID

+  )

+{

+  //

+  // initialize the statusbar

+  //

+  StatusString         = NULL;

+  StatusBarNeedRefresh = TRUE;

+  StatusStringChanged  = FALSE;

+

+  //

+  // status string set to ""

+  //

+  return (StatusBarSetStatusString (L""));

+}

+

+/**

+  Cleanup function for the status bar.

+**/

+VOID

+EFIAPI

+StatusBarCleanup (

+  VOID

+  )

+{

+  //

+  // free the status string and backvar's status string

+  //

+  SHELL_FREE_NON_NULL (StatusString);

+}

+

+typedef struct {

+  UINT32  Foreground : 4;

+  UINT32  Background : 4;

+} STATUS_BAR_COLOR_ATTRIBUTES;

+

+typedef union {

+  STATUS_BAR_COLOR_ATTRIBUTES  Colors;

+  UINTN                       Data;

+} STATUS_BAR_COLOR_UNION;

+

+/**

+  Cause the status bar to refresh it's printing on the screen.

+

+  @param[in] EditorFirst      TRUE to indicate the first launch of the editor.  

+                              FALSE otherwise.

+  @param[in] LastRow          LastPrintable row.

+  @param[in] LastCol          Last printable column.

+  @param[in] FileRow          Row in the file.

+  @param[in] FileCol          Column in the file.

+  @param[in] InsertMode       TRUE to indicate InsertMode.  FALSE otherwise.

+

+  @retval EFI_SUCCESS         The operation was successful.

+**/

+EFI_STATUS

+EFIAPI

+StatusBarRefresh (

+  IN BOOLEAN  EditorFirst,

+  IN UINTN    LastRow,

+  IN UINTN    LastCol,

+  IN UINTN    FileRow,

+  IN UINTN    FileCol,

+  IN BOOLEAN  InsertMode

+  )

+{

+  STATUS_BAR_COLOR_UNION  Orig;

+  STATUS_BAR_COLOR_UNION  New;

+

+  if (!StatusStringChanged && StatusBarNeedRefresh) {

+    StatusBarSetStatusString (L"\0");

+  }

+  //

+  // when it's called first time after editor launch, so refresh is mandatory

+  //

+  if (!StatusBarNeedRefresh && !StatusStringChanged) {

+    return EFI_SUCCESS;

+  }

+

+  //

+  // back up the screen attributes

+  //

+  Orig.Data             = gST->ConOut->Mode->Attribute;

+  New.Colors.Foreground = Orig.Colors.Background;

+  New.Colors.Background = Orig.Colors.Foreground;

+

+  gST->ConOut->EnableCursor (gST->ConOut, FALSE);

+  gST->ConOut->SetAttribute (gST->ConOut, New.Data);

+

+  //

+  // clear status bar

+  //

+  EditorClearLine (LastRow - 3, LastCol, LastRow);

+

+  //

+  // print row, column fields

+  //

+  ShellPrintEx (

+    0,

+    (INT32)(LastRow) - 4,

+    L"  Row: %d  Col: %d       %s",

+    FileRow,

+    FileCol,

+    StatusString

+    );

+

+  //

+  // print insert mode field

+  //

+  if (InsertMode) {

+    ShellPrintEx ((INT32)(LastCol) - 10, (INT32)(LastRow) - 4, L"|%s|", L"INS");

+  } else {

+    ShellPrintEx ((INT32)(LastCol) - 10, (INT32)(LastRow) - 4, L"|%s|", L"OVR");

+  }

+  //

+  // restore the old screen attributes

+  //

+  gST->ConOut->SetAttribute (gST->ConOut, Orig.Data);

+

+  //

+  // restore position in edit area

+  //

+  gST->ConOut->EnableCursor (gST->ConOut, TRUE);

+

+  StatusBarNeedRefresh  = FALSE;

+  StatusStringChanged   = FALSE;

+

+  return EFI_SUCCESS;

+}

+

+/**

+  Set the status string text part.

+

+  @param[in] Str                The string to use.

+

+  @retval EFI_SUCCESS           The operation was successful.

+  @retval EFI_OUT_OF_RESOURCES  A memory allocation failed.

+**/

+EFI_STATUS

+EFIAPI

+StatusBarSetStatusString (

+  IN CHAR16 *Str

+  )

+{

+  StatusStringChanged = TRUE;

+

+  //

+  // free the old status string

+  //

+  SHELL_FREE_NON_NULL (StatusString);

+  StatusString = CatSPrint (NULL, L"%s", Str);

+  if (StatusString == NULL) {

+    return EFI_OUT_OF_RESOURCES;

+  }

+

+  return EFI_SUCCESS;

+}

+

+/**

+  Function to retrieve the current status string.

+

+  @return The string that is used.

+**/

+CONST CHAR16*

+EFIAPI

+StatusBarGetString (

+  VOID

+  )

+{

+  return (StatusString);

+}

+

+/**

+  Function to set the need refresh boolean to TRUE.

+**/

+VOID

+EFIAPI

+StatusBarSetRefresh(

+  VOID

+  )

+{

+  StatusBarNeedRefresh = TRUE;

+}

+

+/**

+  Function to get the need refresh boolean to TRUE.

+

+  @retval TRUE    The status bar needs to be refreshed.

+**/

+BOOLEAN

+EFIAPI

+StatusBarGetRefresh(

+  VOID

+  )

+{

+  return (StatusBarNeedRefresh);

+}

diff --git a/ShellPkg/Library/UefiShellDebug1CommandsLib/EditStatusBar.h b/ShellPkg/Library/UefiShellDebug1CommandsLib/EditStatusBar.h
new file mode 100644
index 0000000000..debf83a9ec
--- /dev/null
+++ b/ShellPkg/Library/UefiShellDebug1CommandsLib/EditStatusBar.h
@@ -0,0 +1,109 @@
+/** @file

+  Declares statusbar interface functions.

+

+  Copyright (c) 2005 - 2011, 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 _LIB_STATUS_BAR_H_

+#define _LIB_STATUS_BAR_H_

+

+/**

+  Initialization function for Status Bar.

+

+  @retval EFI_SUCCESS           The operation was successful.

+  @retval EFI_OUT_OF_RESOURCES  A memory allocation failed.

+  @sa StatusBarSetStatusString

+**/

+EFI_STATUS

+EFIAPI

+StatusBarInit (

+  VOID

+  );

+

+/**

+  Cleanup function for the status bar.

+**/

+VOID

+EFIAPI

+StatusBarCleanup (

+  VOID

+  );

+

+/**

+  Cause the status bar to refresh it's printing on the screen.

+

+  @param[in] EditorFirst      TRUE to indicate the first launch of the editor.  

+                              FALSE otherwise.

+  @param[in] LastRow          LastPrintable row.

+  @param[in] LastCol          Last printable column.

+  @param[in] FileRow          Row in the file.

+  @param[in] FileCol          Column in the file.

+  @param[in] InsertMode       TRUE to indicate InsertMode.  FALSE otherwise.

+

+  @retval EFI_SUCCESS         The operation was successful.

+**/

+EFI_STATUS

+EFIAPI

+StatusBarRefresh (

+  IN BOOLEAN  EditorFirst,

+  IN UINTN    LastRow,

+  IN UINTN    LastCol,

+  IN UINTN    FileRow,

+  IN UINTN    FileCol,

+  IN BOOLEAN  InsertMode

+  );

+

+/**

+  Set the status string text part.

+

+  @param[in] Str                The string to use.

+

+  @retval EFI_SUCCESS           The operation was successful.

+  @retval EFI_OUT_OF_RESOURCES  A memory allocation failed.

+**/

+EFI_STATUS

+EFIAPI

+StatusBarSetStatusString (

+  IN CHAR16 *Str

+  );

+

+/**

+  Function to retrieve the current status string.

+

+  @return The string that is used.

+**/

+CONST CHAR16*

+EFIAPI

+StatusBarGetString (

+  VOID

+  );

+

+/**

+  Function to set the need refresh boolean to TRUE.

+**/

+VOID

+EFIAPI

+StatusBarSetRefresh(

+  VOID

+  );

+

+/**

+  Function to get the need refresh boolean to TRUE.

+

+  @retval TRUE    The status bar needs to be refreshed.

+**/

+BOOLEAN

+EFIAPI

+StatusBarGetRefresh(

+  VOID

+  );

+

+#endif

diff --git a/ShellPkg/Library/UefiShellDebug1CommandsLib/EditTitleBar.c b/ShellPkg/Library/UefiShellDebug1CommandsLib/EditTitleBar.c
new file mode 100644
index 0000000000..1f71c8b18b
--- /dev/null
+++ b/ShellPkg/Library/UefiShellDebug1CommandsLib/EditTitleBar.c
@@ -0,0 +1,200 @@
+/** @file

+  Implements titlebar interface functions.

+

+  Copyright (c) 2005 - 2011, 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.

+

+**/

+

+#include "EditTitleBar.h"

+#include "UefiShellDebug1CommandsLib.h"

+

+CHAR16  *Title = NULL;

+

+/**

+  Initialize a title bar.

+

+  @param[in] Prompt             The prompt to print in the title bar.

+

+  @retval EFI_SUCCESS           The initialization was successful.

+  @retval EFI_OUT_OF_RESOURCES  A memory allocation failed.

+**/

+EFI_STATUS

+EFIAPI

+MainTitleBarInit (

+  CONST CHAR16 *Prompt

+  )

+{

+  SHELL_FREE_NON_NULL (Title);

+  if (Prompt == NULL) {

+    Title = CatSPrint (NULL, L"");

+  } else {

+    //

+    // set Title

+    //

+    Title = CatSPrint (NULL, L"%s", Prompt);

+  }

+  if (Title == NULL) {

+    return EFI_OUT_OF_RESOURCES;

+  }

+

+  return EFI_SUCCESS;

+}

+

+/**

+  Clean up the memory used.

+**/

+VOID

+EFIAPI

+MainTitleBarCleanup (

+  VOID

+  )

+{

+  SHELL_FREE_NON_NULL (Title);

+  Title = NULL;

+}

+

+typedef struct {

+  UINT32  Foreground : 4;

+  UINT32  Background : 4;

+} TITLE_BAR_COLOR_ATTRIBUTES;

+

+typedef union {

+  TITLE_BAR_COLOR_ATTRIBUTES  Colors;

+  UINTN                       Data;

+} TITLE_BAR_COLOR_UNION;

+

+/**

+  Refresh function for MainTitleBar

+

+  @param[in] FileName           The open file's name (or NULL).

+  @param[in] FileType           The type fo the file.

+  @param[in] ReadOnly           TRUE if the file is read only.  FALSE otherwise.

+  @param[in] Modified           TRUE if the file was modified.  FALSE otherwise.

+  @param[in] LastCol            The last printable column.

+  @param[in] LastRow            The last printable row.

+

+  @retval EFI_SUCCESS           The operation was successful.

+**/

+EFI_STATUS

+EFIAPI

+MainTitleBarRefresh (

+  IN CONST CHAR16                 *FileName OPTIONAL,

+  IN CONST EDIT_FILE_TYPE         FileType,

+  IN BOOLEAN                      ReadOnly,

+  IN BOOLEAN                      Modified,

+  IN UINTN                        LastCol,

+  IN UINTN                        LastRow

+  )

+{

+  TITLE_BAR_COLOR_UNION   Orig;

+  TITLE_BAR_COLOR_UNION   New;

+  CONST CHAR16            *FileNameTmp;

+  INTN                    TempInteger;

+

+

+  //

+  // backup the old screen attributes

+  //

+  Orig.Data             = gST->ConOut->Mode->Attribute;

+  New.Colors.Foreground = Orig.Colors.Background;

+  New.Colors.Background = Orig.Colors.Foreground;

+

+  gST->ConOut->SetAttribute (gST->ConOut, New.Data);

+

+  //

+  // clear the title line

+  //

+  EditorClearLine (1, LastCol, LastRow);

+

+  if (Title != NULL) {

+    //

+    // print the new title bar prefix

+    //

+    ShellPrintEx (

+      0,

+      0,

+      L"%s ",

+      Title

+      );

+  }

+  if (FileName == NULL) {

+    gST->ConOut->SetAttribute (gST->ConOut, Orig.Data);

+    return EFI_SUCCESS;

+  }

+  //

+  // First Extract the FileName from fullpath

+  //

+  FileNameTmp = FileName;

+  for (TempInteger = StrLen (FileNameTmp) - 1; TempInteger >= 0; TempInteger--) {

+    if (FileNameTmp[TempInteger] == L'\\') {

+      break;

+    }

+  }

+

+  FileNameTmp = FileNameTmp + TempInteger + 1;

+

+  //

+  // the space for file name is 20 characters

+  //

+  if (StrLen (FileNameTmp) <= 20) {

+    ShellPrintEx (-1,-1, L"%s   ", FileNameTmp);

+    for (TempInteger = StrLen (FileNameTmp); TempInteger < 20; TempInteger++) {

+      ShellPrintEx (-1,-1, L" ");

+    }

+

+  } else {

+    for (TempInteger = 0; TempInteger < 17; TempInteger++) {

+      ShellPrintEx (-1,-1, L"%c", FileNameTmp[TempInteger]);

+    }

+    //

+    // print "..."

+    //

+    ShellPrintEx (-1,-1, L"...   ");

+  }

+  //

+  // print file type field

+  //

+  switch (FileType){

+    case FileTypeAscii:

+    case FileTypeUnicode:

+      if (FileType == FileTypeAscii){

+        ShellPrintEx (-1,-1, L"     UNICODE   ");

+      }

+      //

+      // print read-only field for text files

+      //

+      if (ReadOnly) {

+        ShellPrintEx (-1,-1, L"ReadOnly   ");

+      } else {

+        ShellPrintEx (-1,-1, L"           ");

+      }

+    break;

+    case FileTypeDiskBuffer:

+    case FileTypeMemBuffer:

+      //

+      // Print the offset.

+      //

+      ASSERT(FALSE);

+    case FileTypeFileBuffer:

+      break;

+  }

+  //

+  // print modified field

+  //

+  if (Modified) {

+    ShellPrintEx (-1,-1, L"Modified");

+  }

+  //

+  // restore the old attribute

+  //

+  gST->ConOut->SetAttribute (gST->ConOut, Orig.Data);

+

+  return EFI_SUCCESS;

+}

diff --git a/ShellPkg/Library/UefiShellDebug1CommandsLib/EditTitleBar.h b/ShellPkg/Library/UefiShellDebug1CommandsLib/EditTitleBar.h
new file mode 100644
index 0000000000..908b5a3947
--- /dev/null
+++ b/ShellPkg/Library/UefiShellDebug1CommandsLib/EditTitleBar.h
@@ -0,0 +1,73 @@
+/** @file

+  Declares titlebar interface functions.

+

+  Copyright (c) 2005 - 2011, 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 _LIB_TITLE_BAR_H_

+#define _LIB_TITLE_BAR_H_

+

+/**

+  Initialize a title bar.

+

+  @param[in] Prompt             The prompt to print in the title bar.

+

+  @retval EFI_SUCCESS           The initialization was successful.

+  @retval EFI_OUT_OF_RESOURCES  A memory allocation failed.

+**/

+EFI_STATUS

+EFIAPI

+MainTitleBarInit (

+  CONST CHAR16 *Prompt

+  );

+

+/**

+  Clean up the memory used.

+**/

+VOID

+EFIAPI

+MainTitleBarCleanup (

+  VOID

+  );

+

+typedef enum {

+  FileTypeNone,

+  FileTypeAscii,

+  FileTypeUnicode,

+  FileTypeDiskBuffer,

+  FileTypeMemBuffer,

+  FileTypeFileBuffer

+} EDIT_FILE_TYPE;

+

+/**

+  Refresh function for MainTitleBar

+

+  @param[in] FileName           The open file's name (or NULL).

+  @param[in] FileType           The type fo the file.

+  @param[in] ReadOnly           TRUE if the file is read only.  FALSE otherwise.

+  @param[in] Modified           TRUE if the file was modified.  FALSE otherwise.

+  @param[in] LastCol            The last printable column.

+  @param[in] LastRow            The last printable row.

+

+  @retval EFI_SUCCESS           The operation was successful.

+**/

+EFI_STATUS

+EFIAPI

+MainTitleBarRefresh (

+  IN CONST CHAR16                 *FileName OPTIONAL,

+  IN CONST EDIT_FILE_TYPE         FileType,

+  IN BOOLEAN                      ReadOnly,

+  IN BOOLEAN                      Modified,

+  IN UINTN                        LastCol,

+  IN UINTN                        LastRow

+  );

+

+#endif