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// Copyright (c) 2011 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.

#ifndef CHROME_TEST_WEBDRIVER_WEBDRIVER_ELEMENT_ID_H_
#define CHROME_TEST_WEBDRIVER_WEBDRIVER_ELEMENT_ID_H_
#pragma once

#include <string>

#include "chrome/test/automation/value_conversion_traits.h"

namespace base {
class Value;
}

namespace webdriver {

// This class represents a WebDriver Element ID. These IDs are mapped to
// objects in a page in JavaScript.
class ElementId {
 public:
  // Creates an invalid ElementId.
  ElementId();

  // Creates a valid |ElementId| using the ID of an element. An empty string
  // can be used to refer to the root document of the page.
  explicit ElementId(const std::string& id);

  // Creates a |ElementId| from an element dictionary returned by a WebDriver
  // atom. It will be valid iff the dictionary is correctly constructed.
  explicit ElementId(const base::Value* value);

  ~ElementId();

  // Returns the appropriate |Value| type to be used to identify the element
  // to a WebDriver atom. The client takes ownership.
  base::Value* ToValue() const;

  // Returns whether this ID is valid. Even if the ID is valid, it may not refer
  // to a valid ID on the page.
  bool is_valid() const;

 private:
  std::string id_;
  bool is_valid_;
};

// WebDriver element locators. These constants are used to identify different
// ways to locate an element to WebDriver atoms. Struct is used for grouping
// purposes.
struct LocatorType {
  static const char kClassName[];
  static const char kCss[];
  static const char kId[];
  static const char kLinkText[];
  static const char kName[];
  static const char kPartialLinkText[];
  static const char kTagName[];
  static const char kXpath[];
};

}  // namespace webdriver

template <>
struct ValueConversionTraits<webdriver::ElementId> {
  static base::Value* CreateValueFrom(const webdriver::ElementId& t);
  static bool SetFromValue(
      const base::Value* value, webdriver::ElementId* t);
  static bool CanConvert(const base::Value* value);
};

#endif  // CHROME_TEST_WEBDRIVER_WEBDRIVER_ELEMENT_ID_H_