Only block internal touchpad and allow external mice to continue working in maximize mode.

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.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::DeviceDataManager::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())
+    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