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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