Index: chrome/browser/extensions/global_shortcut_listener_win.cc |
diff --git a/chrome/browser/extensions/global_shortcut_listener_win.cc b/chrome/browser/extensions/global_shortcut_listener_win.cc |
new file mode 100644 |
index 0000000000000000000000000000000000000000..db5a973ba33238cb681ba23280ecaf676103f657 |
--- /dev/null |
+++ b/chrome/browser/extensions/global_shortcut_listener_win.cc |
@@ -0,0 +1,80 @@ |
+// Copyright (c) 2013 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 "chrome/browser/extensions/global_shortcut_listener_win.h" |
+ |
+#include "base/win/win_util.h" |
+#include "content/public/browser/browser_thread.h" |
+#include "ui/base/accelerators/accelerator.h" |
+#include "ui/base/events/event_constants.h" |
+#include "ui/base/keycodes/keyboard_code_conversion_win.h" |
zhchbin
2013/09/20 07:49:23
This file has been moved from base to events. s/ba
|
+ |
+using content::BrowserThread; |
+ |
+namespace { |
+ |
+static base::LazyInstance<extensions::GlobalShortcutListenerWin> instance = |
+ LAZY_INSTANCE_INITIALIZER; |
+ |
+} // namespace |
+ |
+namespace extensions { |
+ |
+// static |
+GlobalShortcutListener* GlobalShortcutListener::GetInstance() { |
+ CHECK(BrowserThread::CurrentlyOn(BrowserThread::UI)); |
+ return instance.Pointer(); |
+} |
+ |
+GlobalShortcutListenerWin::GlobalShortcutListenerWin() |
+ : keyboard_hook_(NULL), |
+ is_hooking_(false) { |
+ CHECK(BrowserThread::CurrentlyOn(BrowserThread::UI)); |
+} |
+ |
+GlobalShortcutListenerWin::~GlobalShortcutListenerWin() { |
+ if (is_hooking_) |
+ StopHooking(); |
+} |
+ |
+void GlobalShortcutListenerWin::StartHooking() { |
+ if (is_hooking_) |
+ return; |
+ |
+ keyboard_hook_ = SetWindowsHookEx(WH_KEYBOARD_LL, &KeyboardHook, NULL, 0L); |
zhchbin
2013/09/20 07:49:23
Do you mind explaining the reason that you chose u
Finnur
2013/09/20 13:01:12
I haven't fully made up my mind yet (and not fully
Finnur
2013/09/20 13:15:56
Well, I take that back: a window isn't required. B
zhchbin
2013/09/21 02:07:50
We can use base::win::MessageWindow to subscribe t
Finnur
2013/09/21 12:23:50
Yes, I came to the conclusion after responding to
|
+ if (keyboard_hook_) |
+ is_hooking_ = true; |
+} |
+ |
+void GlobalShortcutListenerWin::StopHooking() { |
+ if (!is_hooking_) |
+ return; |
+ |
+ if (keyboard_hook_) |
+ UnhookWindowsHookEx(keyboard_hook_); |
+ keyboard_hook_ = NULL; |
+ is_hooking_ = false; |
+} |
+ |
+// static |
+LRESULT CALLBACK GlobalShortcutListenerWin::KeyboardHook(int code, |
+ WPARAM w_param, |
+ LPARAM l_param) { |
+ if (code >= 0 && w_param == WM_KEYDOWN) { |
+ int vkCode = reinterpret_cast<KBDLLHOOKSTRUCT*>(l_param)->vkCode; |
+ int modifiers = 0; |
+ modifiers |= base::win::IsShiftPressed() ? ui::EF_SHIFT_DOWN : 0; |
+ modifiers |= base::win::IsCtrlPressed() ? ui::EF_CONTROL_DOWN : 0; |
+ modifiers |= base::win::IsAltPressed() ? ui::EF_ALT_DOWN : 0; |
+ ui::Accelerator accelerator( |
+ ui::KeyboardCodeForWindowsKeyCode(vkCode), modifiers); |
+ |
+ if (instance.Get().NotifyKeyPressed(accelerator)) |
+ return -1; // Prevent further processing. |
+ } |
+ |
+ return CallNextHookEx(NULL, code, w_param, l_param); |
+} |
+ |
+} // namespace extensions |