// 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 Microsoft.Win32;
using ESRI.ArcGIS.ADF.BaseClasses;
using ESRI.ArcGIS.ADF.CATIDs;
using ESRI.ArcGIS.Controls;
using ESRI.ArcGIS.Carto;
using ESRI.ArcGIS.Geometry;
using ESRI.ArcGIS.Analyst3D;
using ESRI.ArcGIS.GlobeCore;
using ESRI.ArcGIS.Geodatabase;
using ESRI.ArcGIS.DataSourcesFile;

namespace RSSWeatherLayer3D
{
  /// <summary>
  /// Summary description for AddWeatherItemTool.
  /// </summary>
  [ClassInterface(ClassInterfaceType.None)]
  [Guid("35EE24A3-9C07-48db-9A37-AA0C24357B24")]
  [ProgId("RSSWeatherLayer3D.AddWeatherItemTool")]
  [ComVisible(true)]
  public sealed class AddWeatherItemTool: BaseTool
  {
    #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);
      GMxCommands.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);
      GMxCommands.Unregister(regKey);
      ControlsCommands.Unregister(regKey);
    }

    #endregion
    #endregion

    private IGlobeHookHelper          m_globeHookHelper = null;
    private RSSWeatherLayer3DClass  m_weatherLayer    = null;
    private IFeatureClass              m_featureClass    = null;
    private IScene                    m_scene            = null;
    private IGlobeDisplay             m_globeDsp        = null;
    private IGlobeViewUtil            m_globeViewUtil   = null;

    public AddWeatherItemTool()
    {
      base.m_category = "Weather3D";
      base.m_caption = "Add Item";
      base.m_message = "Add Weather item";
      base.m_toolTip = "Add Weather item";
      base.m_name = base.m_category + "_" + base.m_caption;

      try
      {
        base.m_bitmap = new System.Drawing.Bitmap(GetType().Assembly.GetManifestResourceStream(GetType(), "Bitmaps.AddWeatherItemTool.bmp"));
        base.m_cursor = new System.Windows.Forms.Cursor(GetType().Assembly.GetManifestResourceStream(GetType(), "Cursors.AddWeatherItemTool.cur"));
      }
      catch (Exception ex)
      {
        System.Diagnostics.Trace.WriteLine(ex.Message, "Invalid Bitmap");
      }
    }

    #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)
    {
      //Instantiate the hook helper
      if (null == m_globeHookHelper)
        m_globeHookHelper = new GlobeHookHelperClass();
      
      //set the hook
      m_globeHookHelper.Hook = hook;

      //get the relevant members
      IGlobe globe = m_globeHookHelper.Globe;
      m_scene = globe as IScene;
      m_globeDsp = m_globeHookHelper.GlobeDisplay;
      m_globeViewUtil = m_globeHookHelper.Camera as IGlobeViewUtil;

      //connect to the ZipCodes featureclass
      //get the ArcGIS path from the registry
      RegistryKey key = Registry.LocalMachine.OpenSubKey(@"SOFTWARE\ESRI\ArcObjectsSdk10.0");
      string path = Convert.ToString(key.GetValue("InstallDir"));
      path = System.IO.Path.Combine(path, @"Samples\data\USZipCodeData");

      IWorkspaceFactory wf = new ShapefileWorkspaceFactoryClass() as IWorkspaceFactory;
      IWorkspace ws = wf.OpenFromFile(path, 0);
      IFeatureWorkspace fw = ws as IFeatureWorkspace;
      m_featureClass = fw.OpenFeatureClass("US_ZipCodes");
    }

    /// <summary>
    /// Occurs when this command is clicked
    /// </summary>
    public override void OnClick()
    {
      try
      {
        IScene scene = m_scene;
        
        //get the weather layer
        IEnumLayer layers = scene.get_Layers(null, false);
        layers.Reset();
        ILayer layer = layers.Next();
        while(layer != null)
        {
          if(layer is RSSWeatherLayer3DClass)
          {
            m_weatherLayer = (RSSWeatherLayer3DClass)layer;
            break;
          }
          layer = layers.Next();
        }
      }
      catch(Exception ex)
      {
        System.Diagnostics.Trace.WriteLine(ex.Message);
      }
    }

    /// <summary>
    /// Occurs when the user click inside the globe
    /// </summary>
    /// <param name="Button"></param>
    /// <param name="Shift"></param>
    /// <param name="X"></param>
    /// <param name="Y"></param>
    public override void OnMouseDown(int Button, int Shift, int X, int Y)
    {
      //make sure that the weatherlayer and the featureclass exists
      if(null == m_weatherLayer || null == m_featureClass)
        return;

      //get the current point (convert the mouse coordinate into geographics coordinate)
      double lat, lon, alt;
      m_globeViewUtil.WindowToGeographic(m_globeDsp, m_globeDsp.ActiveViewer, X, Y, true, out lon, out lat, out alt);
      IPoint point = new PointClass();
      ((IZAware)point).ZAware = true;
      point.PutCoords(lon, lat);
      
      //Set a default elevation of 1000M. Alternatively, the user can get the 
      //elevation from the globesurface (ISurface)
      point.Z = 1000.0;

      //create the spatial filter in order to select the relevant zipCode
      ISpatialFilter spatialFilter = new SpatialFilterClass();
      spatialFilter.Geometry = point as IGeometry;
      spatialFilter.GeometryField = m_featureClass.ShapeFieldName;
      
      //The spatial filter supposed to filter all the polygons containing the point
      spatialFilter.SpatialRel = esriSpatialRelEnum.esriSpatialRelWithin;

      //query the featureclass for the containing features
      IFeatureCursor featureCursor = m_featureClass.Search(spatialFilter, true);
      IFeature feature = featureCursor.NextFeature();
      if(null == feature)
        return;
      
      //get the zip code from the containing feature
      long zipCode = Convert.ToInt64(feature.get_Value(feature.Fields.FindField("ZIP")));
      
      //add the weather item to the layer
      m_weatherLayer.AddItem(zipCode, lat, lon);

      //release the featurecursor
      Marshal.ReleaseComObject(featureCursor);
    }
  
    /// <summary>
    /// Occurs when the user move the mouse
    /// </summary>
    /// <param name="Button"></param>
    /// <param name="Shift"></param>
    /// <param name="X"></param>
    /// <param name="Y"></param>
    public override void OnMouseMove(int Button, int Shift, int X, int Y)
    {
      // TODO:  Add AddWeatherItemTool.OnMouseMove implementation
    }
  
    /// <summary>
    /// Occurs when then user release the mouse button
    /// </summary>
    /// <param name="Button"></param>
    /// <param name="Shift"></param>
    /// <param name="X"></param>
    /// <param name="Y"></param>
    public override void OnMouseUp(int Button, int Shift, int X, int Y)
    {
      // TODO:  Add AddWeatherItemTool.OnMouseUp implementation
    }
    #endregion
  }
}