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| 1 // Copyright 2013 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #ifndef UI_EVENTS_KEYCODES_DOM4_KEYCODE_CONVERTER_H_ | |
| 6 #define UI_EVENTS_KEYCODES_DOM4_KEYCODE_CONVERTER_H_ | |
| 7 | |
| 8 #include <stdint.h> | |
| 9 #include "base/basictypes.h" | |
| 10 | |
| 11 // For reference, the W3C UI Event spec is located at: | |
| 12 // http://www.w3.org/TR/uievents/ | |
| 13 | |
| 14 namespace ui { | |
| 15 | |
| 16 enum class DomCode; | |
| 17 enum class DomKey; | |
| 18 | |
| 19 enum class DomKeyLocation { STANDARD, LEFT, RIGHT, NUMPAD }; | |
| 20 | |
| 21 // This structure is used to define the keycode mapping table. | |
| 22 // It is defined here because the unittests need access to it. | |
| 23 typedef struct { | |
| 24 // USB keycode: | |
| 25 // Upper 16-bits: USB Usage Page. | |
| 26 // Lower 16-bits: USB Usage Id: Assigned ID within this usage page. | |
| 27 uint32_t usb_keycode; | |
| 28 | |
| 29 // Contains one of the following: | |
| 30 // On Linux: XKB scancode | |
| 31 // On Windows: Windows OEM scancode | |
| 32 // On Mac: Mac keycode | |
| 33 int native_keycode; | |
| 34 | |
| 35 // The UIEvents (aka: DOM4Events) |code| value as defined in: | |
| 36 // http://www.w3.org/TR/DOM-Level-3-Events-code/ | |
| 37 const char* code; | |
| 38 } KeycodeMapEntry; | |
| 39 | |
| 40 // A class to convert between the current platform's native keycode (scancode) | |
| 41 // and platform-neutral |code| values (as defined in the W3C UI Events | |
| 42 // spec (http://www.w3.org/TR/uievents/). | |
| 43 class KeycodeConverter { | |
| 44 public: | |
| 45 // Return the value that identifies an invalid native keycode. | |
| 46 static int InvalidNativeKeycode(); | |
| 47 | |
| 48 // Convert a native (Mac/Win/Linux) keycode into the |code| string. | |
| 49 // The returned pointer references a static global string. | |
| 50 static const char* NativeKeycodeToCode(int native_keycode); | |
| 51 | |
| 52 // Convert a native (Mac/Win/Linux) keycode into a DomCode. | |
| 53 static DomCode NativeKeycodeToDomCode(int native_keycode); | |
| 54 | |
| 55 // Convert a UI Events |code| string value into a native keycode. | |
| 56 static int CodeToNativeKeycode(const char* code); | |
| 57 | |
| 58 // Convert a DomCode into a native keycode. | |
| 59 static int DomCodeToNativeKeycode(DomCode code); | |
| 60 | |
| 61 // Convert a UI Events |code| string value into a DomCode. | |
| 62 static DomCode CodeStringToDomCode(const char* code); | |
| 63 | |
| 64 // Convert a DomCode into a UI Events |code| string value. | |
| 65 static const char* DomCodeToCodeString(DomCode dom_code); | |
| 66 | |
| 67 // Return the DomKeyLocation of a DomCode. The DomKeyLocation distinguishes | |
| 68 // keys with the same meaning, and therefore the same DomKey or KeyboardCode | |
| 69 // (VKEY), and corresponds to the DOM UI Events |KeyboardEvent.location|. | |
| 70 static DomKeyLocation DomCodeToLocation(DomCode dom_code); | |
| 71 | |
| 72 // Convert a UI Events |key| string value into a DomKey. | |
| 73 static DomKey KeyStringToDomKey(const char* key); | |
| 74 | |
| 75 // Convert a DomKey into a UI Events |key| string value. | |
| 76 static const char* DomKeyToKeyString(DomKey dom_key); | |
| 77 | |
| 78 // The following methods relate to USB keycodes. | |
| 79 // Note that USB keycodes are not part of any web standard. | |
| 80 // Please don't use USB keycodes in new code. | |
| 81 | |
| 82 // Return the value that identifies an invalid USB keycode. | |
| 83 static uint32_t InvalidUsbKeycode(); | |
| 84 | |
| 85 // Convert a USB keycode into an equivalent platform native keycode. | |
| 86 static int UsbKeycodeToNativeKeycode(uint32_t usb_keycode); | |
| 87 | |
| 88 // Convert a platform native keycode into an equivalent USB keycode. | |
| 89 static uint32_t NativeKeycodeToUsbKeycode(int native_keycode); | |
| 90 | |
| 91 // Convert a USB keycode into the string with the DOM3 |code| value. | |
| 92 // The returned pointer references a static global string. | |
| 93 static const char* UsbKeycodeToCode(uint32_t usb_keycode); | |
| 94 | |
| 95 // Convert a USB keycode into a DomCode. | |
| 96 static DomCode UsbKeycodeToDomCode(uint32_t usb_keycode); | |
| 97 | |
| 98 // Convert a DOM3 Event |code| string into a USB keycode value. | |
| 99 static uint32_t CodeToUsbKeycode(const char* code); | |
| 100 | |
| 101 // Static methods to support testing. | |
| 102 static size_t NumKeycodeMapEntriesForTest(); | |
| 103 static const KeycodeMapEntry* GetKeycodeMapForTest(); | |
| 104 static const char* DomKeyStringForTest(size_t index); | |
| 105 | |
| 106 private: | |
| 107 DISALLOW_COPY_AND_ASSIGN(KeycodeConverter); | |
| 108 }; | |
| 109 | |
| 110 } // namespace ui | |
| 111 | |
| 112 #endif // UI_EVENTS_KEYCODES_DOM4_KEYCODE_CONVERTER_H_ | |
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Chromium Code Reviews
Issue 1136503003:
Consolidate ui/events/keycodes/dom[34]/ into .../dom/ (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master