// Copyright 2006 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.Windows.Forms;
using System.Runtime.InteropServices;
using ESRI.ArcGIS.ADF.BaseClasses;
using ESRI.ArcGIS.ADF.CATIDs;
using ESRI.ArcGIS.Controls;
using ESRI.ArcGIS.Carto;
using ESRI.ArcGIS.Display;

namespace DynamicDisplayHUD
{
  /// <summary>
  /// This command toggles dynamic mode
  /// </summary>
  [Guid("08b129ae-db54-46bb-b13c-5e44f62997b6")]
  [ClassInterface(ClassInterfaceType.None)]
  [ProgId("DynamicDisplayHUD.ToggleDynamicModeCmd")]
  public sealed class ToggleDynamicModeCmd : 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);
      MxCommands.Register(regKey);
      ControlsCommands.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);
      MxCommands.Unregister(regKey);
      ControlsCommands.Unregister(regKey);
    }

    #endregion
    #endregion

    #region class members
    private IHookHelper   m_hookHelper = null;
    private bool          m_bIsDynamicMode = false;
    private IDynamicMap   m_dynamicMap = null;
    #endregion

    #region class constructor
    public ToggleDynamicModeCmd()
    {
      base.m_category = ".NET Samples";
      base.m_caption = "Toggle dynamic mode"; 
      base.m_message = "Switch in and out of dynamic mode";
      base.m_toolTip = "Toggle dynamic mode";
      base.m_name = "DynamicDisplayHUD_ToggleDynamicModeCmd";  

      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;

      try
      {
        m_hookHelper = new HookHelperClass();
        m_hookHelper.Hook = hook;
        if (m_hookHelper.ActiveView == null)
          m_hookHelper = null;
      }
      catch
      {
        m_hookHelper = null;
      }

      if (m_hookHelper == null)
        base.m_enabled = false;
      else
        base.m_enabled = true;
    }

    /// <summary>
    /// Occurs when this command is clicked
    /// </summary>
    public override void OnClick()
    {
      //cast into dynamic map. make sure that the current diaplsy supports dynamic display mode.
      m_dynamicMap = m_hookHelper.FocusMap as IDynamicMap;
      if (null == m_dynamicMap)
      {
        MessageBox.Show("The current display does not support dynamic mode.", "Warning", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
        return;
      }

      //switch in and out of dynamic mode
      if (!m_bIsDynamicMode)
      {
        m_dynamicMap.DynamicMapEnabled = true;
      }
      else
      {
        m_dynamicMap.DynamicMapEnabled = false;
      }
      
      m_bIsDynamicMode = !m_bIsDynamicMode;
    }

    /// <summary>
    /// Controls the appearance of the button (checked or unchecked)
    /// </summary>
    public override bool Checked
    {
      get { return m_bIsDynamicMode; }
    }
      

    #endregion
  }
}