using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Runtime.Serialization;
using System.Xml.Schema;
using System.Xml.Serialization;
namespace Netron.Diagramming.Core {
  /// <summary>
  /// Complementary partial class related to (de)serialization.
  /// </summary>
  [Serializable]
  public partial class Model : ISerializable, IXmlSerializable, IDeserializationCallback {
    #region Deserialization constructor
    /// <summary>
    /// Deserialization constructor
    /// </summary>
    /// <param name="info">The info.</param>
    /// <param name="context">The context.</param>
    protected Model(SerializationInfo info, StreamingContext context) {
      if (Tracing.BinaryDeserializationSwitch.Enabled) {
        Trace.WriteLine("Deserializing the fields of 'Model'.");
      }

      double version = info.GetDouble("ModelVersion");

      mPages = info.GetValue(
          "Pages",
          typeof(CollectionBase<IPage>)) as CollectionBase<IPage>;

      //Init();
    }
    #endregion

    #region Serialization events
    /*
        [OnSerializing]
        void OnSerializing(StreamingContext context)
        {
            Trace.Indent();
            Trace.WriteLine("Starting to serializing the 'Model' class...");
        }
        [OnSerialized]
        void OnSerialized(StreamingContext context)
        {
           
            Trace.WriteLine("...serialization of 'Model' finished");
            Trace.Unindent();
        }
        */
    #endregion

    #region Deserialization events

    [OnDeserializing]
    void OnDeserializing(StreamingContext context) {
      if (Tracing.BinaryDeserializationSwitch.Enabled)
        Trace.WriteLine("Starting deserializing the 'Model' class...");
      //the anchors is a temporary collection of Uid's and parent entities to re-connect connectors
      //to their parent. The serialization process does serialize parenting because you need on deserialization an
      //instance in order to connect to it.

      Anchors.Clear();
    }

    [OnDeserialized]
    void OnDeserialized(StreamingContext context) {
      if (Tracing.BinaryDeserializationSwitch.Enabled)
        Trace.WriteLine("...deserialization of 'Model' finished");
    }

    #endregion

    #region Serialization
    /// <summary>
    /// Populates a <see cref="T:System.Runtime.Serialization.SerializationInfo"></see> with the data needed to serialize the target object.
    /// </summary>
    /// <param name="info">The <see cref="T:System.Runtime.Serialization.SerializationInfo"></see> to populate with data.</param>
    /// <param name="context">The destination (see <see cref="T:System.Runtime.Serialization.StreamingContext"></see>) for this serialization.</param>
    /// <exception cref="T:System.Security.SecurityException">The caller does not have the required permission. </exception>
    public void GetObjectData(SerializationInfo info, StreamingContext context) {
      if (Tracing.BinarySerializationSwitch.Enabled)
        Trace.WriteLine("Serializing the fields of 'Model'.");

      info.AddValue("ModelVersion", modelVersion);

      info.AddValue("Pages", this.Pages, typeof(CollectionBase<IPage>));
    }
    #endregion

    #region Xml serialization
    /// <summary>
    /// This property is reserved, apply the <see cref="T:System.Xml.Serialization.XmlSchemaProviderAttribute"></see> to the class instead.
    /// </summary>
    /// <returns>
    /// An <see cref="T:System.Xml.Schema.XmlSchema"></see> that describes the XML representation of the object that is produced by the <see cref="M:System.Xml.Serialization.IXmlSerializable.WriteXml(System.Xml.XmlWriter)"></see> method and consumed by the <see cref="M:System.Xml.Serialization.IXmlSerializable.ReadXml(System.Xml.XmlReader)"></see> method.
    /// </returns>
    public XmlSchema GetSchema() {
      throw new NotImplementedException("The method or operation is not implemented.");
    }

    /// <summary>
    /// Generates an object from its XML representation.
    /// </summary>
    /// <param name="reader">The <see cref="T:System.Xml.XmlReader"></see> stream from which the object is deserialized.</param>
    public void ReadXml(System.Xml.XmlReader reader) {
      throw new NotImplementedException("The method or operation is not implemented.");
    }

    /// <summary>
    /// Converts an object into its XML representation.
    /// </summary>
    /// <param name="writer">The <see cref="T:System.Xml.XmlWriter"></see> stream to which the object is serialized.</param>
    public void WriteXml(System.Xml.XmlWriter writer) {
      throw new NotImplementedException("The method or operation is not implemented.");
    }
    #endregion

    #region IDeserializationCallback Members

    /// <summary>
    /// Runs when the entire object graph has been deserialized.
    /// </summary>
    /// <param name="sender">The object that initiated the callback. The functionality for this parameter is not currently implemented.</param>
    public void OnDeserialization(object sender) {

      if (Tracing.BinaryDeserializationSwitch.Enabled)
        Trace.WriteLine("IDeserializationCallback of 'Model' called.");
      Init();
      #region Binding of connectors

      Dictionary<Guid, Anchor>.Enumerator enumer = Anchors.GetEnumerator();
      System.Collections.Generic.KeyValuePair<Guid, Anchor> pair;
      Anchor anchor;
      while (enumer.MoveNext()) {
        pair = enumer.Current;
        anchor = pair.Value;
        if (anchor.Parent != Guid.Empty) //there's a parent connector
                {
          if (Anchors.ContainsKey(anchor.Parent)) {
            Anchors.GetAnchor(anchor.Parent).Instance.AttachConnector(anchor.Instance);
          }
        }
      }
      //clean up the anchoring matrix
      Anchors.Clear();
      #endregion
    }

    #endregion
  }
}