// Copyright 2010 ESRI
// 
// All rights reserved under the copyright laws of the United States
// and applicable international laws, treaties, and conventions.
// 
// You may freely redistribute and use this sample code, with or
// without modification, provided you include the original copyright
// notice and use restrictions.
// 
// See the use restrictions.
// 

using System;
using System.Drawing;
using System.Runtime.InteropServices;
using ESRI.ArcGIS.ADF.BaseClasses;
using ESRI.ArcGIS.ADF.CATIDs;
using ESRI.ArcGIS.Controls;
using ESRI.ArcGIS.Carto;

namespace GraphicsLayerToolControl
{
  /// <summary>
  /// this command adds a new graphics layer to the map and makes it the active graphics layer
  /// </summary>
  [Guid("ba7007d0-545a-49a8-87a1-b42e5f2d2262")]
  [ClassInterface(ClassInterfaceType.None)]
  [ProgId("GraphicsLayerToolControl.NewGraphicsLayerCmd")]
  public sealed class NewGraphicsLayerCmd : BaseCommand
  {
    #region COM Registration Function(s)
    [ComRegisterFunction()]
    [ComVisible(false)]
    static void RegisterFunction(Type registerType)
    {
      // Required for ArcGIS Component Category Registrar support
      ArcGISCategoryRegistration(registerType);

      //
      // TODO: Add any COM registration code here
      //
    }

    [ComUnregisterFunction()]
    [ComVisible(false)]
    static void UnregisterFunction(Type registerType)
    {
      // Required for ArcGIS Component Category Registrar support
      ArcGISCategoryUnregistration(registerType);

      //
      // TODO: Add any COM unregistration code here
      //
    }

    #region ArcGIS Component Category Registrar generated code
    /// <summary>
    /// Required method for ArcGIS Component Category registration -
    /// Do not modify the contents of this method with the code editor.
    /// </summary>
    private static void ArcGISCategoryRegistration(Type registerType)
    {
      string regKey = string.Format("HKEY_CLASSES_ROOT\\CLSID\\{{{0}}}", registerType.GUID);
      ControlsCommands.Register(regKey);
      MxCommands.Register(regKey);

    }
    /// <summary>
    /// Required method for ArcGIS Component Category unregistration -
    /// Do not modify the contents of this method with the code editor.
    /// </summary>
    private static void ArcGISCategoryUnregistration(Type registerType)
    {
      string regKey = string.Format("HKEY_CLASSES_ROOT\\CLSID\\{{{0}}}", registerType.GUID);
      ControlsCommands.Unregister(regKey);
      MxCommands.Unregister(regKey);
    }

    #endregion
    #endregion

    #region class members
    private IHookHelper m_hookHelper = null;
    #endregion

    #region class constructor
    public NewGraphicsLayerCmd()
    {
      base.m_category = ".NET Samples";
      base.m_caption = "New Graphics Layer"; 
      base.m_message = "Add new Graphics layer";
      base.m_toolTip = "Add new Graphics layer";
      base.m_name = "ToolControlSample_NewGraphicsLayerCmd";   

      try
      {
        string bitmapResourceName = GetType().Name + ".bmp";
        base.m_bitmap = new Bitmap(GetType(), bitmapResourceName);
      }
      catch (Exception ex)
      {
        System.Diagnostics.Trace.WriteLine(ex.Message, "Invalid Bitmap");
      }
    }
    #endregion

    #region Overriden Class Methods

    /// <summary>
    /// Occurs when this command is created
    /// </summary>
    /// <param name="hook">Instance of the application</param>
    public override void OnCreate(object hook)
    {
      if (hook == null)
        return;

      if (m_hookHelper == null)
        m_hookHelper = new HookHelperClass();

      m_hookHelper.Hook = hook;
    }

    /// <summary>
    /// Occurs when this command is clicked
    /// </summary>
    public override void OnClick()
    {
      //get the map
      IMap map = m_hookHelper.FocusMap;
      
      //count the graphics layers (will be used in order to name the new layer)
      int graphicsLayerCoount = 0;
      for (int i = 0; i < map.LayerCount; i++)
      {
        if (map.get_Layer(i) is IGraphicsLayer)
          graphicsLayerCoount++;
      }

      //create a new graphics layer
      IGraphicsLayer graphicsLayer = new CompositeGraphicsLayerClass();
      //name the new layer
      ((ILayer)graphicsLayer).Name = "Graphics Layer " + graphicsLayerCoount.ToString();
      //make the new graphics layer the active graphics layer
      map.ActiveGraphicsLayer = (ILayer)graphicsLayer;
      //add the new layer to the map
      map.AddLayer((ILayer)graphicsLayer);
    }

    #endregion
  }
}