using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using HeuristicLab.Core;
using HeuristicLab.Common;

namespace HeuristicLab.Problems.MetaOptimization {
  public abstract class ParameterConfiguration : IParameterConfiguration {
    public bool Optimize { get; set; }
    public IParameter Parameter { get; set; }
    public string Category { get; set; }

    public ParameterConfiguration() { }
    public ParameterConfiguration(IParameter parameter, string category) {
      this.Parameter = parameter;
      this.Category = category;
      Parameter.NameChanged += this.NameChanged;
      Parameter.NameChanging += this.NameChanging;
      Parameter.DescriptionChanged += this.DescriptionChanged;
      Parameter.ItemImageChanged += this.ItemImageChanged;
      parameter.ToStringChanged += this.ToStringChanged;
    }

    public bool CanChangeDescription {
      get { return false; }
    }

    public bool CanChangeName {
      get { return false; }
    }

    public string Description {
      get { return Parameter.Description; }
      set { throw new NotSupportedException(); }
    }
    public string Name {
      get { return Parameter.Name; }
      set { throw new NotSupportedException(); }
    }

    public string ItemDescription {
      get { return Parameter.ItemDescription; }
    }

    public System.Drawing.Image ItemImage {
      get { return Parameter.ItemImage; }
    }

    public string ItemName {
      get { return Parameter.ItemName; }
    }

    public Version ItemVersion {
      get { return Parameter.ItemVersion; }
    }

    #region Events
    public virtual event EventHandler NameChanged;
    public virtual event EventHandler<CancelEventArgs<string>> NameChanging;
    public virtual event EventHandler DescriptionChanged;
    public virtual event EventHandler ItemImageChanged;
    public virtual event EventHandler ToStringChanged;

    protected virtual void OnToStringChanged() {
      var handler = ToStringChanged;
      if (handler != null) handler(this, EventArgs.Empty);
    }
    #endregion

    #region Cloning
    public virtual IDeepCloneable Clone(Cloner cloner) {
      ParameterConfiguration clone = (ParameterConfiguration)Activator.CreateInstance(this.GetType(), true);
      cloner.RegisterClonedObject(this, clone);
      clone.Parameter = (IParameter)cloner.Clone(this.Parameter);
      clone.Optimize = this.Optimize;
      return clone;
    }

    public object Clone() {
      return Clone(new Cloner());
    }
    #endregion

    public override string ToString() {
      return string.Format("{0}.{1}", Category, Parameter.Name);
    }
    
    public abstract IParameter GetParameterWithRandomValue(IRandom random);

  }
}