Revert of Take GetCharacterFromKeyCode() out behind the barn.

ui/events/keycodes/keyboard_code_conversion.cc

 // Copyright (c) 2011 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.
 
 #include "ui/events/keycodes/keyboard_code_conversion.h"
 
 #include <algorithm>
 
 #include "ui/events/event_constants.h"
 #include "ui/events/keycodes/dom3/dom_code.h"
 #include "ui/events/keycodes/dom3/dom_key.h"
 #include "ui/events/keycodes/dom_us_layout_data.h"
 
 namespace ui {
 
 namespace {
 
+// This table maps a subset of |KeyboardCode| (VKEYs) to DomKey and character.
+// Only values not otherwise handled by GetMeaningFromKeyCode() are here.
+const struct KeyboardCodeToMeaning {
+  KeyboardCode key_code;
+  DomKey key;
+  base::char16 plain_character;
+  base::char16 shift_character;
+} kKeyboardCodeToMeaning[] = {
+    {VKEY_BACK, DomKey::BACKSPACE, '\b', 0},
+    {VKEY_TAB, DomKey::TAB, '\t', 0},
+    {VKEY_RETURN, DomKey::ENTER, '\r', 0},
+    {VKEY_ESCAPE, DomKey::ESCAPE, 0x1B, 0},
+    {VKEY_SPACE, DomKey::CHARACTER, ' ', 0},
+    {VKEY_MULTIPLY, DomKey::CHARACTER, '*', 0},
+    {VKEY_ADD, DomKey::CHARACTER, '+', 0},
+    {VKEY_SEPARATOR, DomKey::CHARACTER, ',', 0},
+    {VKEY_SUBTRACT, DomKey::CHARACTER, '-', 0},
+    {VKEY_DECIMAL, DomKey::CHARACTER, '.', 0},
+    {VKEY_DIVIDE, DomKey::CHARACTER, '/', 0},
+    {VKEY_OEM_1, DomKey::CHARACTER, ';', ':'},
+    {VKEY_OEM_PLUS, DomKey::CHARACTER, '=', '+'},
+    {VKEY_OEM_COMMA, DomKey::CHARACTER, ',', '<'},
+    {VKEY_OEM_MINUS, DomKey::CHARACTER, '-', '_'},
+    {VKEY_OEM_PERIOD, DomKey::CHARACTER, '.', '>'},
+    {VKEY_OEM_2, DomKey::CHARACTER, '/', '?'},
+    {VKEY_OEM_3, DomKey::CHARACTER, '`', '~'},
+    {VKEY_OEM_4, DomKey::CHARACTER, '[', '{'},
+    {VKEY_OEM_5, DomKey::CHARACTER, '\\', '|'},
+    {VKEY_OEM_6, DomKey::CHARACTER, ']', '}'},
+    {VKEY_OEM_7, DomKey::CHARACTER, '\'', '"'},
+    {VKEY_OEM_102, DomKey::CHARACTER, '<', '>'},
+    {VKEY_CLEAR, DomKey::CLEAR, 0, 0},
+    {VKEY_SHIFT, DomKey::SHIFT, 0, 0},
+    {VKEY_CONTROL, DomKey::CONTROL, 0, 0},
+    {VKEY_MENU, DomKey::ALT, 0, 0},
+    {VKEY_PAUSE, DomKey::PAUSE, 0, 0},
+    {VKEY_CAPITAL, DomKey::CAPS_LOCK, 0, 0},
+    // Windows conflates 'KanaMode' and 'HangulMode'.
+    {VKEY_KANA, DomKey::KANA_MODE, 0, 0},
+    {VKEY_JUNJA, DomKey::JUNJA_MODE, 0, 0},
+    {VKEY_FINAL, DomKey::FINAL_MODE, 0, 0},
+    // Windows conflates 'HanjaMode' and 'KanjiMode'.
+    {VKEY_HANJA, DomKey::HANJA_MODE, 0, 0},
+    {VKEY_CONVERT, DomKey::CONVERT, 0, 0},
+    {VKEY_NONCONVERT, DomKey::NON_CONVERT, 0, 0},
+    {VKEY_ACCEPT, DomKey::ACCEPT, 0, 0},
+    {VKEY_MODECHANGE, DomKey::MODE_CHANGE, 0, 0},
+    {VKEY_PRIOR, DomKey::PAGE_UP, 0, 0},
+    {VKEY_NEXT, DomKey::PAGE_DOWN, 0, 0},
+    {VKEY_END, DomKey::END, 0, 0},
+    {VKEY_HOME, DomKey::HOME, 0, 0},
+    {VKEY_LEFT, DomKey::ARROW_LEFT, 0, 0},
+    {VKEY_UP, DomKey::ARROW_UP, 0, 0},
+    {VKEY_RIGHT, DomKey::ARROW_RIGHT, 0, 0},
+    {VKEY_DOWN, DomKey::ARROW_DOWN, 0, 0},
+    {VKEY_SELECT, DomKey::SELECT, 0, 0},
+    {VKEY_PRINT, DomKey::PRINT, 0, 0},
+    {VKEY_EXECUTE, DomKey::EXECUTE, 0, 0},
+    {VKEY_SNAPSHOT, DomKey::PRINT_SCREEN, 0, 0},
+    {VKEY_INSERT, DomKey::INSERT, 0, 0},
+    {VKEY_DELETE, DomKey::DEL, 0, 0},
+    {VKEY_HELP, DomKey::HELP, 0, 0},
+    {VKEY_LWIN, DomKey::OS, 0, 0},
+    {VKEY_RWIN, DomKey::OS, 0, 0},
+    {VKEY_APPS, DomKey::MEDIA_APPS, 0, 0},
+    {VKEY_NUMLOCK, DomKey::NUM_LOCK, 0, 0},
+    {VKEY_SCROLL, DomKey::SCROLL_LOCK, 0, 0},
+    {VKEY_LSHIFT, DomKey::SHIFT, 0, 0},
+    {VKEY_RSHIFT, DomKey::SHIFT, 0, 0},
+    {VKEY_LCONTROL, DomKey::CONTROL, 0, 0},
+    {VKEY_RCONTROL, DomKey::CONTROL, 0, 0},
+    {VKEY_LMENU, DomKey::ALT, 0, 0},
+    {VKEY_RMENU, DomKey::ALT, 0, 0},
+    {VKEY_BROWSER_BACK, DomKey::BROWSER_BACK, 0, 0},
+    {VKEY_BROWSER_FORWARD, DomKey::BROWSER_FORWARD, 0, 0},
+    {VKEY_BROWSER_REFRESH, DomKey::BROWSER_REFRESH, 0, 0},
+    {VKEY_BROWSER_STOP, DomKey::BROWSER_STOP, 0, 0},
+    {VKEY_BROWSER_SEARCH, DomKey::BROWSER_SEARCH, 0, 0},
+    {VKEY_BROWSER_FAVORITES, DomKey::BROWSER_FAVORITES, 0, 0},
+    {VKEY_BROWSER_HOME, DomKey::BROWSER_HOME, 0, 0},
+    {VKEY_VOLUME_MUTE, DomKey::VOLUME_MUTE, 0, 0},
+    {VKEY_VOLUME_DOWN, DomKey::VOLUME_DOWN, 0, 0},
+    {VKEY_VOLUME_UP, DomKey::VOLUME_UP, 0, 0},
+    {VKEY_MEDIA_NEXT_TRACK, DomKey::MEDIA_TRACK_NEXT, 0, 0},
+    {VKEY_MEDIA_PREV_TRACK, DomKey::MEDIA_TRACK_PREVIOUS, 0, 0},
+    {VKEY_MEDIA_STOP, DomKey::MEDIA_STOP, 0, 0},
+    {VKEY_MEDIA_PLAY_PAUSE, DomKey::MEDIA_PLAY_PAUSE, 0, 0},
+    {VKEY_MEDIA_LAUNCH_MAIL, DomKey::LAUNCH_MAIL, 0, 0},
+    {VKEY_MEDIA_LAUNCH_MEDIA_SELECT, DomKey::LAUNCH_MEDIA_PLAYER, 0, 0},
+    {VKEY_MEDIA_LAUNCH_APP1, DomKey::LAUNCH_MY_COMPUTER, 0, 0},
+    {VKEY_MEDIA_LAUNCH_APP2, DomKey::LAUNCH_CALCULATOR, 0, 0},
+    {VKEY_OEM_8, DomKey::SUPER, 0, 0},  // ISO Level 5 Shift in ChromeOS
+    {VKEY_PROCESSKEY, DomKey::PROCESS, 0, 0},
+    {VKEY_DBE_SBCSCHAR, DomKey::HANKAKU, 0, 0},
+    {VKEY_DBE_DBCSCHAR, DomKey::ZENKAKU, 0, 0},
+    {VKEY_ATTN, DomKey::ATTN, 0, 0},
+    {VKEY_CRSEL, DomKey::CR_SEL, 0, 0},
+    {VKEY_EXSEL, DomKey::EX_SEL, 0, 0},
+    {VKEY_EREOF, DomKey::ERASE_EOF, 0, 0},
+    {VKEY_PLAY, DomKey::MEDIA_PLAY, 0, 0},
+    {VKEY_ZOOM, DomKey::ZOOM_TOGGLE, 0, 0},
+    {VKEY_OEM_CLEAR, DomKey::CLEAR, 0, 0},
+    {VKEY_ALTGR, DomKey::ALT_GRAPH, 0, 0},
+#if defined(OS_POSIX)
+    {VKEY_POWER, DomKey::POWER, 0, 0},
+    {VKEY_BRIGHTNESS_DOWN, DomKey::BRIGHTNESS_DOWN, 0, 0},
+    {VKEY_BRIGHTNESS_UP, DomKey::BRIGHTNESS_UP, 0, 0},
+    {VKEY_COMPOSE, DomKey::COMPOSE, 0, 0},
+    {VKEY_OEM_103, DomKey::MEDIA_REWIND, 0, 0},
+    {VKEY_OEM_104, DomKey::MEDIA_FAST_FORWARD, 0, 0},
+#endif
+};
+
 bool IsRightSideDomCode(DomCode code) {
   return (code == DomCode::SHIFT_RIGHT) || (code == DomCode::CONTROL_RIGHT) ||
          (code == DomCode::ALT_RIGHT) || (code == DomCode::OS_RIGHT);
 }
 
 bool IsModifierDomCode(DomCode code) {
   return (code == DomCode::CONTROL_LEFT) || (code == DomCode::CONTROL_RIGHT) ||
          (code == DomCode::SHIFT_LEFT) || (code == DomCode::SHIFT_RIGHT) ||
          (code == DomCode::ALT_LEFT) || (code == DomCode::ALT_RIGHT) ||
          (code == DomCode::OS_LEFT) || (code == DomCode::OS_RIGHT);
@@ skipping 10 matching lines @@
                        [](const DomCodeToKeyboardCodeEntry& a, DomCode b) {
     return static_cast<int>(a.dom_code) < static_cast<int>(b);
   });
   if ((found != end) && (found->dom_code == dom_code))
     return found->key_code;
   return VKEY_UNKNOWN;
 }
 
 }  // anonymous namespace
 
-base::char16 DomCodeToUsLayoutCharacter(DomCode dom_code, int flags) {
+base::char16 GetCharacterFromKeyCode(KeyboardCode key_code, int flags) {
+  ui::DomKey dom_key;
   base::char16 character;
-  DomKey dom_key;
-  KeyboardCode key_code;
-  if (DomCodeToUsLayoutMeaning(dom_code, flags, &dom_key, &character,
-                               &key_code))
+  if (GetMeaningFromKeyCode(key_code, flags, &dom_key, &character))
     return character;
   return 0;
 }
 
+bool GetMeaningFromKeyCode(KeyboardCode key_code,
+                           int flags,
+                           DomKey* dom_key,
+                           base::char16* character) {
+  const bool ctrl = (flags & EF_CONTROL_DOWN) != 0;
+  const bool shift = (flags & EF_SHIFT_DOWN) != 0;
+  const bool upper = shift ^ ((flags & EF_CAPS_LOCK_DOWN) != 0);
+
+  // Control characters.
+  if (ctrl) {
+    // Following Windows behavior to map ctrl-a ~ ctrl-z to \x01 ~ \x1A.
+    if (key_code >= VKEY_A && key_code <= VKEY_Z) {
+      *character = static_cast<uint16>(key_code - VKEY_A + 1);
+      switch (key_code) {
+        case VKEY_H:
+          *dom_key = DomKey::BACKSPACE;
+          break;
+        case VKEY_I:
+          *dom_key = DomKey::TAB;
+          break;
+        case VKEY_J:
+        case VKEY_M:
+          *dom_key = DomKey::ENTER;
+          break;
+        default:
+          *dom_key = DomKey::CHARACTER;
+          break;
+      }
+      return true;
+    }
+    // Other control characters.
+    if (shift) {
+      // The following graphics characters require the shift key to input.
+      switch (key_code) {
+        // ctrl-@ maps to \x00 (Null byte)
+        case VKEY_2:
+          *dom_key = DomKey::CHARACTER;
+          *character = 0;
+          return true;
+        // ctrl-^ maps to \x1E (Record separator, Information separator two)
+        case VKEY_6:
+          *dom_key = DomKey::CHARACTER;
+          *character = 0x1E;
+          return true;
+        // ctrl-_ maps to \x1F (Unit separator, Information separator one)
+        case VKEY_OEM_MINUS:
+          *dom_key = DomKey::CHARACTER;
+          *character = 0x1F;
+          return true;
+        // Returns 0 for all other keys to avoid inputting unexpected chars.
+        default:
+          *dom_key = DomKey::UNIDENTIFIED;
+          *character = 0;
+          return false;
+      }
+    } else {
+      switch (key_code) {
+        // ctrl-[ maps to \x1B (Escape)
+        case VKEY_OEM_4:
+          *dom_key = DomKey::ESCAPE;
+          *character = 0x1B;
+          return true;
+        // ctrl-\ maps to \x1C (File separator, Information separator four)
+        case VKEY_OEM_5:
+          *dom_key = DomKey::CHARACTER;
+          *character = 0x1C;
+          return true;
+        // ctrl-] maps to \x1D (Group separator, Information separator three)
+        case VKEY_OEM_6:
+          *dom_key = DomKey::CHARACTER;
+          *character = 0x1D;
+          return true;
+        // ctrl-Enter maps to \x0A (Line feed)
+        case VKEY_RETURN:
+          *dom_key = DomKey::CHARACTER;
+          *character = 0x0A;
+          return true;
+        // Returns 0 for all other keys to avoid inputting unexpected chars.
+        default:
+          *dom_key = DomKey::UNIDENTIFIED;
+          *character = 0;
+          return false;
+      }
+    }
+  }
+
+  // ASCII alphanumeric characters.
+  if (key_code >= VKEY_A && key_code <= VKEY_Z) {
+    *dom_key = DomKey::CHARACTER;
+    *character = static_cast<uint16>(key_code - VKEY_A + (upper ? 'A' : 'a'));
+    return true;
+  }
+  if (key_code >= VKEY_0 && key_code <= VKEY_9) {
+    *dom_key = DomKey::CHARACTER;
+    *character =
+        shift ? ")!@#$%^&*("[key_code - VKEY_0] : static_cast<uint16>(key_code);
+    return true;
+  }
+  if (key_code >= VKEY_NUMPAD0 && key_code <= VKEY_NUMPAD9) {
+    *dom_key = DomKey::CHARACTER;
+    *character = static_cast<uint16>(key_code - VKEY_NUMPAD0 + '0');
+    return true;
+  }
+
+  // Function keys.
+  if (key_code >= VKEY_F1 && key_code <= VKEY_F24) {
+    *dom_key =
+        static_cast<DomKey>(key_code - VKEY_F1 + static_cast<int>(DomKey::F1));
+    *character = 0;
+    return true;
+  }
+
+  // Other keys.
+  for (size_t i = 0; i < arraysize(kKeyboardCodeToMeaning); ++i) {
+    if (kKeyboardCodeToMeaning[i].key_code == key_code) {
+      const KeyboardCodeToMeaning* p = &kKeyboardCodeToMeaning[i];
+      *dom_key = p->key;
+      *character = (shift && p->shift_character) ? p->shift_character
+                                                 : p->plain_character;
+      return true;
+    }
+  }
+  *dom_key = DomKey::UNIDENTIFIED;
+  *character = 0;
+  return false;
+}
+
 bool DomCodeToUsLayoutMeaning(DomCode dom_code,
                               int flags,
                               DomKey* out_dom_key,
                               base::char16* out_character,
                               KeyboardCode* out_key_code) {
   if ((flags & EF_CONTROL_DOWN) == EF_CONTROL_DOWN) {
     if (DomCodeToControlCharacter(dom_code, flags, out_dom_key, out_character,
                                   out_key_code)) {
       return true;
     }
@@ skipping 215 matching lines @@
       return it.dom_code;
   }
   for (const auto& it : kFallbackKeyboardCodeToDomCodeMap) {
     if (it.key_code == key_code)
       return it.dom_code;
   }
   return DomCode::NONE;
 }
 
 }  // namespace ui