blob: aab1594226c1e052dbc04d2a960314db995cdda8 [file] [log] [blame]
// Copyright 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 "cobalt/media/base/user_input_monitor.h"
#include "base/logging.h"
namespace cobalt {
namespace media {
#ifdef DISABLE_USER_INPUT_MONITOR
std::unique_ptr<UserInputMonitor> UserInputMonitor::Create(
const scoped_refptr<base::SingleThreadTaskRunner>& io_task_runner,
const scoped_refptr<base::SingleThreadTaskRunner>& ui_task_runner) {
return NULL;
}
#endif // DISABLE_USER_INPUT_MONITOR
UserInputMonitor::UserInputMonitor()
: key_press_counter_references_(0),
mouse_listeners_count_(0),
mouse_listeners_(new MouseListenerList()) {}
UserInputMonitor::~UserInputMonitor() {
DCHECK_EQ(0u, key_press_counter_references_);
mouse_listeners_->AssertEmpty();
}
void UserInputMonitor::AddMouseListener(MouseEventListener* listener) {
mouse_listeners_->AddObserver(listener);
{
base::AutoLock auto_lock(lock_);
mouse_listeners_count_++;
if (mouse_listeners_count_ == 1) {
StartMouseMonitoring();
DVLOG(2) << "Started mouse monitoring.";
}
}
}
void UserInputMonitor::RemoveMouseListener(MouseEventListener* listener) {
mouse_listeners_->RemoveObserver(listener);
{
base::AutoLock auto_lock(lock_);
DCHECK_NE(mouse_listeners_count_, 0u);
mouse_listeners_count_--;
if (mouse_listeners_count_ == 0) {
StopMouseMonitoring();
DVLOG(2) << "Stopped mouse monitoring.";
}
}
}
void UserInputMonitor::EnableKeyPressMonitoring() {
base::AutoLock auto_lock(lock_);
++key_press_counter_references_;
if (key_press_counter_references_ == 1) {
StartKeyboardMonitoring();
DVLOG(2) << "Started keyboard monitoring.";
}
}
void UserInputMonitor::DisableKeyPressMonitoring() {
base::AutoLock auto_lock(lock_);
DCHECK_NE(key_press_counter_references_, 0u);
--key_press_counter_references_;
if (key_press_counter_references_ == 0) {
StopKeyboardMonitoring();
DVLOG(2) << "Stopped keyboard monitoring.";
}
}
} // namespace media
} // namespace cobalt