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Side by Side Diff: third_party/WebKit/public/platform/WebKeyboardEvent.h

Issue 2639273002: Give WebTouchEvent and WebKeyboardEvent their own headers (Closed)
Patch Set: Rebase Created 3 years, 11 months ago
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1 // Copyright 2017 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 WebKeyboardEvent_h
6 #define WebKeyboardEvent_h
7
8 #include "WebInputEvent.h"
9
10 namespace blink {
11
12 // See WebInputEvent.h for details why this pack is here.
13 #pragma pack(push, 4)
14
15 // WebKeyboardEvent -----------------------------------------------------------
16
17 class WebKeyboardEvent : public WebInputEvent {
18 public:
19 // Caps on string lengths so we can make them static arrays and keep
20 // them PODs.
21 static const size_t textLengthCap = 4;
22
23 // |windowsKeyCode| is the Windows key code associated with this key
24 // event. Sometimes it's direct from the event (i.e. on Windows),
25 // sometimes it's via a mapping function. If you want a list, see
26 // WebCore/platform/chromium/KeyboardCodes* . Note that this should
27 // ALWAYS store the non-locational version of a keycode as this is
28 // what is returned by the Windows API. For example, it should
29 // store VK_SHIFT instead of VK_RSHIFT. The location information
30 // should be stored in |modifiers|.
31 int windowsKeyCode;
32
33 // The actual key code genenerated by the platform. The DOM spec runs
34 // on Windows-equivalent codes (thus |windowsKeyCode| above) but it
35 // doesn't hurt to have this one around.
36 int nativeKeyCode;
37
38 // The DOM code enum of the key pressed as passed by the embedder. DOM
39 // code enum are defined in ui/events/keycodes/dom4/keycode_converter_data.h.
40 int domCode;
41
42 // The DOM key enum of the key pressed as passed by the embedder. DOM
43 // key enum are defined in ui/events/keycodes/dom3/dom_key_data.h
44 int domKey;
45
46 // This identifies whether this event was tagged by the system as being
47 // a "system key" event (see
48 // http://msdn.microsoft.com/en-us/library/ms646286(VS.85).aspx for
49 // details). Other platforms don't have this concept, but it's just
50 // easier to leave it always false than ifdef.
51 bool isSystemKey;
52
53 // Whether the event forms part of a browser-handled keyboard shortcut.
54 // This can be used to conditionally suppress Char events after a
55 // shortcut-triggering RawKeyDown goes unhandled.
56 bool isBrowserShortcut;
57
58 // |text| is the text generated by this keystroke. |unmodifiedText| is
59 // |text|, but unmodified by an concurrently-held modifiers (except
60 // shift). This is useful for working out shortcut keys. Linux and
61 // Windows guarantee one character per event. The Mac does not, but in
62 // reality that's all it ever gives. We're generous, and cap it a bit
63 // longer.
64 WebUChar text[textLengthCap];
65 WebUChar unmodifiedText[textLengthCap];
66
67 WebKeyboardEvent(Type type, int modifiers, double timeStampSeconds)
68 : WebInputEvent(sizeof(WebKeyboardEvent),
69 type,
70 modifiers,
71 timeStampSeconds) {}
72
73 WebKeyboardEvent() : WebInputEvent(sizeof(WebKeyboardEvent)) {}
74
75 // Please refer to bug http://b/issue?id=961192, which talks about Webkit
76 // keyboard event handling changes. It also mentions the list of keys
77 // which don't have associated character events.
78 bool isCharacterKey() const {
79 // TODO(dtapuska): Determine if we can remove this method and just
80 // not actually generate events for these instead of filtering them out.
81 switch (windowsKeyCode) {
82 case 0x08: // VK_BACK
83 case 0x1b: // VK_ESCAPE
84 return false;
85 }
86 return true;
87 }
88 };
89
90 #pragma pack(pop)
91
92 } // namespace blink
93
94 #endif // WebKeyboardEvent_h
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