// <copyright file="ElementCoordinates.cs" company="Selenium Committers">
// Licensed to the Software Freedom Conservancy (SFC) under one
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// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
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//
//   http://www.apache.org/licenses/LICENSE-2.0
//
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using OpenQA.Selenium.Interactions.Internal;
using OpenQA.Selenium.Internal;
using System;

namespace OpenQA.Selenium;

/// <summary>
/// Defines the interface through which the user can discover where an element is on the screen.
/// </summary>
internal sealed class ElementCoordinates : ICoordinates
{
    private readonly WebElement element;

    /// <summary>
    /// Initializes a new instance of the <see cref="ElementCoordinates"/> class.
    /// </summary>
    /// <param name="element">The <see cref="WebElement"/> to be located.</param>
    public ElementCoordinates(WebElement element)
    {
        this.element = element ?? throw new ArgumentNullException(nameof(element));
    }

    /// <summary>
    /// Gets the location of an element in absolute screen coordinates.
    /// </summary>
    public System.Drawing.Point LocationOnScreen => throw new NotImplementedException();

    /// <summary>
    /// Gets the location of an element relative to the origin of the view port.
    /// </summary>
    public System.Drawing.Point LocationInViewport => this.element.LocationOnScreenOnceScrolledIntoView;

    /// <summary>
    /// Gets the location of an element's position within the HTML DOM.
    /// </summary>
    public System.Drawing.Point LocationInDom => this.element.Location;

    /// <summary>
    /// Gets a locator providing a user-defined location for this element.
    /// </summary>
    public object AuxiliaryLocator
    {
        get
        {
            // Note that the OSS dialect of the wire protocol for the Actions API
            // uses the raw ID of the element, not an element reference. To use this,
            // extract the ID using the well-known key to the dictionary for element
            // references.
            return ((IWebDriverObjectReference)this.element).ObjectReferenceId;
        }
    }
}