src/cobalt/dom/ui_event_with_key_state.cc

// Copyright 2015 Google Inc. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

#include "cobalt/dom/ui_event_with_key_state.h"

#include "cobalt/system_window/input_event.h"

namespace cobalt {
namespace dom {

// For simplicity, we make sure these match, to avoid doing a conversion.
COMPILE_ASSERT(
    UIEventWithKeyState::kNoModifier ==
            system_window::InputEvent::kNoModifier &&
        UIEventWithKeyState::kAltKey == system_window::InputEvent::kAltKey &&
        UIEventWithKeyState::kCtrlKey == system_window::InputEvent::kCtrlKey &&
        UIEventWithKeyState::kMetaKey == system_window::InputEvent::kMetaKey &&
        UIEventWithKeyState::kShiftKey == system_window::InputEvent::kShiftKey,
    Mismatched_modifier_enums);

bool UIEventWithKeyState::GetModifierState(const std::string& keyArg) const {
  // Standard names of modifier keys defined here:
  // https://www.w3.org/TR/DOM-Level-3-Events-key/#keys-modifier
  if (keyArg == "Alt") {
    return alt_key();
  } else if (keyArg == "Control") {
    return ctrl_key();
  } else if (keyArg == "Meta") {
    return meta_key();
  } else if (keyArg == "Shift") {
    return shift_key();
  }

  return false;
}

}  // namespace dom
}  // namespace cobalt