// --------------------------------------------------------------------------------------------------------------------
// <copyright file="ExampleInfo.cs" company="OxyPlot">
// Copyright (c) 2014 OxyPlot contributors
// </copyright>
// --------------------------------------------------------------------------------------------------------------------

namespace ExampleLibrary
{
 using System.Reflection;

 using OxyPlot;

 /// <summary>
 /// Provides information about an example.
 /// </summary>
 public class ExampleInfo
 {
 /// <summary>
 /// The method to invoke.
 /// </summary>
 private readonly MethodInfo method;

 /// <summary>
 /// The result of the method call.
 /// </summary>
 private object result;

 /// <summary>
 /// Initializes a new instance of the <see cref="ExampleInfo"/> class.
 /// </summary>
 /// <param name="category">The category.</param>
 /// <param name="title">The title.</param>
 /// <param name="tags">The tags.</param>
 /// <param name="method">The method.</param>
 public ExampleInfo(string category, string title, string[] tags, MethodInfo method)
 {
 this.Category = category;
 this.Title = title;
 this.Tags = tags;
 this.method = method;
 }

 /// <summary>
 /// Gets the category.
 /// </summary>
 /// <value>
 /// The category.
 /// </value>
 public string Category { get; private set; }

 /// <summary>
 /// Gets the title.
 /// </summary>
 /// <value>
 /// The title.
 /// </value>
 public string Title { get; private set; }

 /// <summary>
 /// Gets the tags.
 /// </summary>
 /// <value>
 /// The tags.
 /// </value>
 public string[] Tags { get; private set; }

 /// <summary>
 /// Gets the plot model.
 /// </summary>
 /// <value>
 /// The plot model.
 /// </value>
 public PlotModel PlotModel
 {
 get
 {
 var plotModel = this.Result as PlotModel;
 if (plotModel != null)
 {
 return plotModel;
 }

 var example = this.Result as Example;
 return example != null ? example.Model : null;
 }
 }

 /// <summary>
 /// Gets the plot controller.
 /// </summary>
 /// <value>
 /// The plot controller.
 /// </value>
 public IPlotController PlotController
 {
 get
 {
 var example = this.Result as Example;
 return example != null ? example.Controller : null;
 }
 }

 /// <summary>
 /// Gets the code.
 /// </summary>
 /// <value>
 /// The code.
 /// </value>
 public string Code
 {
 get
 {
 return this.PlotModel != null ? this.PlotModel.ToCode() : null;
 }
 }

 /// <summary>
 /// Gets the result.
 /// </summary>
 /// <value>
 /// The result.
 /// </value>
 private object Result
 {
 get
 {
 return this.result ?? (this.result = this.method.Invoke(null, null));
 }
 }

 /// <summary>
 /// Returns a <see cref="System.String" /> that represents this instance.
 /// </summary>
 /// <returns>
 /// A <see cref="System.String" /> that represents this instance.
 /// </returns>
 public override string ToString()
 {
 return this.Title;
 }
 }
}