using System;
using System.Collections.Generic;
using System.Text;
using System.Collections;
using FastReport.Utils;

namespace FastReport.CrossView
{
    /// <summary>
    /// Represents a collection of CrossView header descriptors used in the <see cref="CrossViewObject"/>.
    /// </summary>
    public class CrossViewHeader : CollectionBase, IFRSerializable
    {
        private string name;

        /// <summary>
        /// Gets or sets the element at the specified index.
        /// </summary>
        /// <param name="index">Index of an element.</param>
        /// <returns>The element at the specified index.</returns>
        public CrossViewHeaderDescriptor this[int index]
        {
            get { return List[index] as CrossViewHeaderDescriptor; }
            set { List[index] = value; }
        }

        internal string Name
        {
            get { return name; }
            set { name = value; }
        }

        /// <summary>
        /// Adds the specified descriptors to the end of this collection.
        /// </summary>
        /// <param name="range">Array of descriptors to add.</param>
        internal void AddRange(CrossViewHeaderDescriptor[] range)
        {
            foreach (CrossViewHeaderDescriptor s in range)
            {
                Add(s);
            }
        }

        /// <summary>
        /// Adds a descriptor to the end of this collection.
        /// </summary>
        /// <param name="value">Descriptor to add.</param>
        /// <returns>Index of the added descriptor.</returns>
        internal int Add(CrossViewHeaderDescriptor value)
        {
            return List.Add(value);
        }

        /// <summary>
        /// Inserts a descriptor into this collection at the specified index.
        /// </summary>
        /// <param name="index">The zero-based index at which value should be inserted.</param>
        /// <param name="value">The descriptor to insert.</param>
        internal void Insert(int index, CrossViewHeaderDescriptor value)
        {
            List.Insert(index, value);
        }

        /// <summary>
        /// Removes the specified descriptor from the collection.
        /// </summary>
        /// <param name="value">Descriptor to remove.</param>
        internal void Remove(CrossViewHeaderDescriptor value)
        {
            int i = IndexOf(value);
            if (i != -1)
                List.RemoveAt(i);
        }

        /// <summary>
        /// Returns the zero-based index of the first occurrence of a descriptor.
        /// </summary>
        /// <param name="value">The descriptor to locate in the collection.</param>
        /// <returns>The zero-based index of the first occurrence of descriptor within 
        /// the entire collection, if found; otherwise, -1.</returns>
        internal int IndexOf(CrossViewHeaderDescriptor value)
        {
            return List.IndexOf(value);
        }

        /// <summary>
        /// Determines whether a descriptor is in the collection.
        /// </summary>
        /// <param name="value">The descriptor to locate in the collection.</param>
        /// <returns><b>true</b> if descriptor is found in the collection; otherwise, <b>false</b>.</returns>
        internal bool Contains(CrossViewHeaderDescriptor value)
        {
            return List.Contains(value);
        }

        /// <summary>
        /// Copies the elements of this collection to a new array. 
        /// </summary>
        /// <returns>An array containing copies of this collection elements. </returns>
        internal CrossViewHeaderDescriptor[] ToArray()
        {
            CrossViewHeaderDescriptor[] result = new CrossViewHeaderDescriptor[Count];
            for (int i = 0; i < Count; i++)
            {
                result[i] = this[i];
            }
            return result;
        }

        /// <inheritdoc/>
        public void Serialize(FRWriter writer)
        {
            writer.ItemName = Name;
            foreach (CrossViewHeaderDescriptor d in this)
            {
                writer.Write(d);
            }
        }

        /// <inheritdoc/>
        public void Deserialize(FRReader reader)
        {
            Clear();
            while (reader.NextItem())
            {
                CrossViewHeaderDescriptor d = new CrossViewHeaderDescriptor();
                reader.Read(d);
                Add(d);
            }
        }

        /// <summary>
        /// 
        /// </summary>
        public CrossViewHeader()
        {
        }
    }
}