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1 // Copyright (c) 2009 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 CHROME_BROWSER_GLOBAL_KEYBOARD_SHORTCUTS_MAC_H_
6 #define CHROME_BROWSER_GLOBAL_KEYBOARD_SHORTCUTS_MAC_H_
7 
8 #include "base/basictypes.h"
9 
10 struct KeyboardShortcutData {
11   bool command_key;
12   bool shift_key;
13   bool cntrl_key;
14   bool opt_key;
15   // Either one of vkey_code or key_char must be specified.  For keys
16   // whose virtual key code is hardware-dependent (kVK_ANSI_*) key_char
17   // should be specified instead.
18   // Set 0 for the one you do not want to specify.
19   int vkey_code;  // Virtual Key code for the command.
20   unichar key_char;  // Key event characters for the command as reported by
21                      // [NSEvent charactersIgnoringModifiers].
22   int chrome_command;  // The chrome command # to execute for this shortcut.
23 };
24 
25 // Check if a given keycode + modifiers (or keychar + modifiers if the
26 // |key_char| is specified) correspond to a given Chrome command.
27 // returns: Command number (as passed to
28 // BrowserCommandController::ExecuteCommand) or -1 if there was no match.
29 //
30 // |performKeyEquivalent:| bubbles events up from the window to the views.  If
31 // we let it bubble up to the Omnibox, then the Omnibox handles cmd-left/right
32 // just fine, but it swallows cmd-1 and doesn't give us a chance to intercept
33 // this. Hence, we need three types of keyboard shortcuts: shortcuts that are
34 // intercepted before the Omnibox handles events, shortcuts that are
35 // intercepted after the Omnibox had a chance but did not handle them, and
36 // shortcuts that are only handled when tab contents is focused.
37 //
38 // This means cmd-left doesn't work if you hit cmd-l tab, which focusses
39 // something that's neither omnibox nor tab contents. This behavior is
40 // consistent with safari and camino, and I think it's the best we can do
41 // without rewriting event dispatching ( http://crbug.com/251069 ).
42 
43 // This returns shortcuts that should work no matter what component of the
44 // browser is focused. They are executed by the window, before any view has the
45 // opportunity to override the shortcut (with the exception of the tab contents,
46 // which first checks if the current web page wants to handle the shortcut).
47 int CommandForWindowKeyboardShortcut(
48     bool command_key, bool shift_key, bool cntrl_key, bool opt_key,
49     int vkey_code, unichar key_char);
50 
51 // This returns shortcuts that should work no matter what component of the
52 // browser is focused. They are executed by the window, after any view has the
53 // opportunity to override the shortcut
54 int CommandForDelayedWindowKeyboardShortcut(
55     bool command_key, bool shift_key, bool cntrl_key, bool opt_key,
56     int vkey_code, unichar key_char);
57 
58 // This returns shortcuts that should work only if the tab contents have focus
59 // (e.g. cmd-left, which shouldn't do history navigation if e.g. the omnibox has
60 // focus).
61 int CommandForBrowserKeyboardShortcut(
62     bool command_key, bool shift_key, bool cntrl_key, bool opt_key,
63     int vkey_code, unichar key_char);
64 
65 // Returns a keyboard event character for the given |event|.  In most cases
66 // this returns the first character of [NSEvent charactersIgnoringModifiers],
67 // but when [NSEvent character] has different printable ascii character
68 // we may return the first character of [NSEvent characters] instead.
69 // (E.g. for dvorak-qwerty layout we want [NSEvent characters] rather than
70 // [charactersIgnoringModifiers] for command keys.  Similarly, on german
71 // layout we want '{' character rather than '8' for opt-8.)
72 unichar KeyCharacterForEvent(NSEvent* event);
73 
74 // For testing purposes.
75 const KeyboardShortcutData* GetWindowKeyboardShortcutTable(size_t* num_entries);
76 const KeyboardShortcutData*
77     GetDelayedWindowKeyboardShortcutTable(size_t* num_entries);
78 const KeyboardShortcutData*
79     GetBrowserKeyboardShortcutTable(size_t* num_entries);
80 
81 #endif  // #ifndef CHROME_BROWSER_GLOBAL_KEYBOARD_SHORTCUTS_MAC_H_
82