// Copyright © 2015 The CefSharp Authors. All rights reserved.
//
// Use of this source code is governed by a BSD-style license that can be found in the LICENSE file.

using System;
using System.Collections.Generic;

namespace CefSharp
{
    /// <summary>
    /// Class used to represent post data for a web request. The methods of this class may be called on any thread. 
    /// </summary>
    public interface IPostData : IDisposable
    {
        /// <summary>
        /// Add the specified <see cref="IPostDataElement"/>.
        /// </summary>
        /// <param name="element">element to be added.</param>
        /// <returns>Returns true if the add succeeds.</returns>
        bool AddElement(IPostDataElement element);

        /// <summary>
        /// Remove  the specified <see cref="IPostDataElement"/>.
        /// </summary>
        /// <param name="element">element to be removed.</param>
        /// <returns> Returns true if the add succeeds.</returns>
        bool RemoveElement(IPostDataElement element);

        /// <summary>
        /// Retrieve the post data elements.
        /// </summary>
        IList<IPostDataElement> Elements { get; }

        /// <summary>
        /// Returns true if this object is read-only.
        /// </summary>
        bool IsReadOnly { get; }

        /// <summary>
        /// Remove all existing post data elements.
        /// </summary>
        void RemoveElements();

        /// <summary>
        /// Gets a value indicating whether the object has been disposed of.
        /// </summary>
        bool IsDisposed { get; }

        /// <summary>
        /// Create a new <see cref="IPostDataElement"/> instance
        /// </summary>
        /// <returns>PostDataElement</returns>
        IPostDataElement CreatePostDataElement();

        /// <summary>
        /// Returns true if the underlying POST data includes elements that are not
        /// represented by this IPostData object (for example, multi-part file upload
        /// data). Modifying IPostData objects with excluded elements may result in
        /// the request failing.
        /// </summary>
        bool HasExcludedElements { get; }
    }
}