Block internal PlatformEvents before they are dispatched in touchview.

ash/wm/maximize_mode/internal_input_device_list_x11.cc

-// Copyright 2014 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 "ash/wm/maximize_mode/internal_input_device_list_x11.h"
-
-#include <X11/extensions/XInput2.h>
-#include <X11/Xlib.h>
-
-#include "base/strings/string_util.h"
-#include "ui/events/event.h"
-#include "ui/events/x/device_data_manager_x11.h"
-#include "ui/events/x/device_list_cache_x.h"
-#include "ui/gfx/x/x11_types.h"
-
-namespace ash {
-
-namespace {
-
-// The name of the xinput device corresponding to the internal touchpad.
-const char kInternalTouchpadName[] = "Elan Touchpad";
-
-// The name of the xinput device corresponding to the internal keyboard.
-const char kInternalKeyboardName[] = "AT Translated Set 2 keyboard";
-
-}  // namespace
-
-InternalInputDeviceListX11::InternalInputDeviceListX11() {
-  if (ui::DeviceDataManagerX11::GetInstance()->IsXInput2Available()) {
-    XIDeviceList xi_dev_list = ui::DeviceListCacheX::GetInstance()->
-        GetXI2DeviceList(gfx::GetXDisplay());
-    for (int i = 0; i < xi_dev_list.count; ++i) {
-      std::string device_name(xi_dev_list[i].name);
-      base::TrimWhitespaceASCII(device_name, base::TRIM_TRAILING, &device_name);
-      if (device_name == kInternalTouchpadName ||
-          device_name == kInternalKeyboardName)
-        internal_device_ids_.insert(xi_dev_list[i].deviceid);
-    }
-  }
-}
-
-InternalInputDeviceListX11::~InternalInputDeviceListX11() {
-}
-
-bool InternalInputDeviceListX11::IsEventFromInternalDevice(
-    const ui::Event* event) {
-  if (!event->HasNativeEvent() ||
-      event->native_event()->type != GenericEvent) {
-    return false;
-  }
-
-  XIDeviceEvent* xiev = static_cast<XIDeviceEvent*>(
-      event->native_event()->xcookie.data);
-  return internal_device_ids_.find(xiev->sourceid) !=
-      internal_device_ids_.end();
-}
-
-}  // namespace ash