1 files changed, 74 insertions, 0 deletions
diff --git a/chromium/media/base/user_input_monitor.cc b/chromium/media/base/user_input_monitor.cc
new file mode 100644
index 00000000000..e43cd626a8f
--- /dev/null
+++ b/chromium/media/base/user_input_monitor.cc
@@ -0,0 +1,74 @@
+// 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 "media/base/user_input_monitor.h"
+
+#include "base/logging.h"
+#include "third_party/skia/include/core/SkPoint.h"
+
+namespace media {
+
+#ifdef DISABLE_USER_INPUT_MONITOR
+scoped_ptr<UserInputMonitor> UserInputMonitor::Create(
+    const scoped_refptr<base::SingleThreadTaskRunner>& io_task_runner,
+    const scoped_refptr<base::SingleThreadTaskRunner>& ui_task_runner) {
+  return scoped_ptr<UserInputMonitor>();
+}
+#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