chrome/browser/ui/views/apps/desktop_keyboard_capture.cc

   1 // Copyright 2014 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 #include "chrome/browser/ui/views/apps/desktop_keyboard_capture.h"
   6 #include "chrome/browser/ui/views/apps/keyboard_hook_handler.h"
   7
   8 DesktopKeyboardCapture::DesktopKeyboardCapture(views::Widget* widget)
   9     : widget_(widget), is_registered_(false) {
  10   widget_->AddObserver(this);
  11
  12   if (widget_->IsActive())
  13     RegisterKeyboardHooks();
  14 }
  15
  16 DesktopKeyboardCapture::~DesktopKeyboardCapture() {
  17   if (is_registered_)
  18     DeregisterKeyboardHooks();
  19
  20   widget_->RemoveObserver(this);
  21 }
  22
  23 void DesktopKeyboardCapture::RegisterKeyboardHooks() {
  24   KeyboardHookHandler::GetInstance()->Register(widget_);
  25   is_registered_ = true;
  26 }
  27
  28 void DesktopKeyboardCapture::DeregisterKeyboardHooks() {
  29   KeyboardHookHandler::GetInstance()->Deregister(widget_);
  30   is_registered_ = false;
  31 }
  32
  33 void DesktopKeyboardCapture::OnWidgetActivationChanged(views::Widget* widget,
  34                                                        bool active) {
  35   if (active) {
  36     RegisterKeyboardHooks();
  37   } else {
  38     DeregisterKeyboardHooks();
  39   }
  40 }