(fix landed) Reland of name MaximizeMode to TabletMode

ash/wm/tablet_mode/scoped_disable_internal_mouse_and_keyboard_x11.cc

Index: ash/wm/tablet_mode/scoped_disable_internal_mouse_and_keyboard_x11.cc
diff --git a/ash/wm/tablet_mode/scoped_disable_internal_mouse_and_keyboard_x11.cc b/ash/wm/tablet_mode/scoped_disable_internal_mouse_and_keyboard_x11.cc
new file mode 100644
index 0000000000000000000000000000000000000000..e9de2bd0432f1e1addfe017e5861ce73956cf1de
--- /dev/null
+++ b/ash/wm/tablet_mode/scoped_disable_internal_mouse_and_keyboard_x11.cc
@@ -0,0 +1,165 @@
+// 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/tablet_mode/scoped_disable_internal_mouse_and_keyboard_x11.h"
+
+#include <X11/Xlib.h>
+#include <X11/extensions/XInput2.h>
+
+#include <memory>
+#include <set>
+#include <utility>
+
+#include "ash/display/window_tree_host_manager.h"
+#include "ash/shell.h"
+#include "base/strings/string_util.h"
+#include "ui/aura/client/cursor_client.h"
+#include "ui/aura/client/screen_position_client.h"
+#include "ui/aura/env.h"
+#include "ui/aura/window.h"
+#include "ui/aura/window_event_dispatcher.h"
+#include "ui/aura/window_tree_host.h"
+#include "ui/events/devices/input_device.h"
+#include "ui/events/devices/x11/device_data_manager_x11.h"
+#include "ui/events/devices/x11/device_list_cache_x11.h"
+#include "ui/events/event.h"
+#include "ui/events/event_utils.h"
+#include "ui/events/keycodes/keyboard_codes_posix.h"
+#include "ui/events/platform/platform_event_source.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";
+
+// Repeated key events have their source set to the core keyboard device.
+// These must be disabled also until http://crbug.com/402898 is resolved.
+const char kCoreKeyboardName[] = "Virtual core keyboard";
+
+// Device id used to indicate that a device has not been detected.
+const int kDeviceIdNone = -1;
+
+gfx::Point GetMouseLocationInScreen() {
+  return aura::Env::GetInstance()->last_mouse_location();
+}
+
+void SetMouseLocationInScreen(const gfx::Point& screen_location) {
+  const display::Display& display =
+      Shell::Get()->display_manager()->FindDisplayContainingPoint(
+          screen_location);
+  if (!display.is_valid())
+    return;
+  aura::Window* root_window =
+      Shell::Get()->window_tree_host_manager()->GetRootWindowForDisplayId(
+          display.id());
+  gfx::Point host_location(screen_location);
+  aura::client::ScreenPositionClient* client =
+      aura::client::GetScreenPositionClient(root_window);
+  if (client)
+    client->ConvertPointFromScreen(root_window, &host_location);
+  root_window->GetHost()->MoveCursorToLocationInDIP(host_location);
+}
+
+}  // namespace
+
+ScopedDisableInternalMouseAndKeyboardX11::
+    ScopedDisableInternalMouseAndKeyboardX11()
+    : touchpad_device_id_(kDeviceIdNone),
+      keyboard_device_id_(kDeviceIdNone),
+      core_keyboard_device_id_(kDeviceIdNone),
+      last_mouse_location_(GetMouseLocationInScreen()) {
+  ui::DeviceDataManagerX11* device_data_manager =
+      ui::DeviceDataManagerX11::GetInstance();
+  if (device_data_manager->IsXInput2Available()) {
+    const XIDeviceList& xi_dev_list =
+        ui::DeviceListCacheX11::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) {
+        if (device_data_manager->IsDeviceEnabled(xi_dev_list[i].deviceid)) {
+          // If the touchpad is already disabled we will do nothing about it.
+          // This will result in doing nothing in the destructor as well since
+          // |touchpad_device_id_| will remain |kDeviceIdNone|.
+          touchpad_device_id_ = xi_dev_list[i].deviceid;
+          device_data_manager->DisableDevice(touchpad_device_id_);
+          Shell::Get()->cursor_manager()->HideCursor();
+        }
+      } else if (device_name == kCoreKeyboardName) {
+        core_keyboard_device_id_ = xi_dev_list[i].deviceid;
+        device_data_manager->DisableDevice(core_keyboard_device_id_);
+      }
+    }
+
+    for (const ui::InputDevice& device :
+         device_data_manager->GetKeyboardDevices()) {
+      if (device.type == ui::InputDeviceType::INPUT_DEVICE_INTERNAL) {
+        keyboard_device_id_ = device.id;
+        device_data_manager->DisableDevice(keyboard_device_id_);
+        break;
+      }
+    }
+  }
+  // Allow the accessible keys present on the side of some devices to continue
+  // working.
+  std::unique_ptr<std::set<ui::KeyboardCode>> excepted_keys(
+      new std::set<ui::KeyboardCode>);
+  excepted_keys->insert(ui::VKEY_VOLUME_DOWN);
+  excepted_keys->insert(ui::VKEY_VOLUME_UP);
+  excepted_keys->insert(ui::VKEY_POWER);
+  device_data_manager->SetDisabledKeyboardAllowedKeys(std::move(excepted_keys));
+  ui::PlatformEventSource::GetInstance()->AddPlatformEventObserver(this);
+}
+
+ScopedDisableInternalMouseAndKeyboardX11::
+    ~ScopedDisableInternalMouseAndKeyboardX11() {
+  ui::DeviceDataManagerX11* device_data_manager =
+      static_cast<ui::DeviceDataManagerX11*>(
+          ui::DeviceDataManager::GetInstance());
+  if (touchpad_device_id_ != kDeviceIdNone) {
+    device_data_manager->EnableDevice(touchpad_device_id_);
+    Shell::Get()->cursor_manager()->ShowCursor();
+  }
+  if (keyboard_device_id_ != kDeviceIdNone)
+    device_data_manager->EnableDevice(keyboard_device_id_);
+  if (core_keyboard_device_id_ != kDeviceIdNone)
+    device_data_manager->EnableDevice(core_keyboard_device_id_);
+  device_data_manager->SetDisabledKeyboardAllowedKeys(
+      std::unique_ptr<std::set<ui::KeyboardCode>>());
+  ui::PlatformEventSource::GetInstance()->RemovePlatformEventObserver(this);
+}
+
+void ScopedDisableInternalMouseAndKeyboardX11::WillProcessEvent(
+    const ui::PlatformEvent& event) {}
+
+void ScopedDisableInternalMouseAndKeyboardX11::DidProcessEvent(
+    const ui::PlatformEvent& event) {
+  if (event->type != GenericEvent)
+    return;
+  XIDeviceEvent* xievent = static_cast<XIDeviceEvent*>(event->xcookie.data);
+  ui::DeviceDataManagerX11* device_data_manager =
+      static_cast<ui::DeviceDataManagerX11*>(
+          ui::DeviceDataManager::GetInstance());
+  if (xievent->evtype != XI_Motion ||
+      device_data_manager->IsFlingEvent(*event) ||
+      device_data_manager->IsScrollEvent(*event) ||
+      device_data_manager->IsCMTMetricsEvent(*event)) {
+    return;
+  }
+  if (xievent->sourceid == touchpad_device_id_) {
+    // The cursor will have already moved even though the move event will be
+    // blocked. Move the mouse cursor back to its last known location resulting
+    // from an external mouse to prevent the internal touchpad from moving it.
+    SetMouseLocationInScreen(last_mouse_location_);
+  } else {
+    // Track the last location seen from an external mouse event.
+    last_mouse_location_ = GetMouseLocationInScreen();
+  }
+}
+
+}  // namespace ash