' 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.
' 

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

''' <summary>
''' Command that works in ArcMap/Map/PageLayout, ArcScene/SceneControl
''' or ArcGlobe/GlobeControl
''' </summary>
<Guid("ffae67a3-92b6-47d6-9d33-a8dd909a53c4")> _
<ClassInterface(ClassInterfaceType.None)> _
<ProgId("RSSWeatherGraphicTracker.AddRSSWeather")> _
Public NotInheritable Class AddRSSWeather
  Inherits BaseCommand
  #Region "COM Registration Function(s)"
  <ComRegisterFunction> _
  <ComVisible(False)> _
  Private Shared Sub RegisterFunction(registerType As Type)
    ' Required for ArcGIS Component Category Registrar support
    ArcGISCategoryRegistration(registerType)
  End Sub

  <ComUnregisterFunction> _
  <ComVisible(False)> _
  Private Shared Sub UnregisterFunction(registerType As Type)
    ' Required for ArcGIS Component Category Registrar support
    ArcGISCategoryUnregistration(registerType)
  End Sub

  #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 Shared Sub ArcGISCategoryRegistration(registerType As Type)
    Dim regKey As String = String.Format("HKEY_CLASSES_ROOT\CLSID\{{{0}}}", registerType.GUID)
    GMxCommands.Register(regKey)
    MxCommands.Register(regKey)
    SxCommands.Register(regKey)
    ControlsCommands.Register(regKey)
  End Sub
  ''' <summary>
  ''' Required method for ArcGIS Component Category unregistration -
  ''' Do not modify the contents of this method with the code editor.
  ''' </summary>
  Private Shared Sub ArcGISCategoryUnregistration(registerType As Type)
    Dim regKey As String = String.Format("HKEY_CLASSES_ROOT\CLSID\{{{0}}}", registerType.GUID)
    GMxCommands.Unregister(regKey)
    MxCommands.Unregister(regKey)
    SxCommands.Unregister(regKey)
    ControlsCommands.Unregister(regKey)
  End Sub

  #End Region
  #End Region

  Private m_hookHelper As IHookHelper = Nothing
  Private m_globeHookHelper As IGlobeHookHelper = Nothing

  Private m_bConnected As Boolean = False
  Private m_rssWeather As RSSWeather = Nothing

  Public Sub New()
    MyBase.m_category = "Weather"
    MyBase.m_caption = "Add RSS Weather"
    MyBase.m_message = "Add RSS Weather"
    MyBase.m_toolTip = "Add RSS Weather"
    MyBase.m_name = "Add RSS Weather"

    Try
      Dim bitmapResourceName As String = [GetType]().Name & ".bmp"
      MyBase.m_bitmap = New Bitmap([GetType](), bitmapResourceName)
    Catch ex As Exception
      System.Diagnostics.Trace.WriteLine(ex.Message, "Invalid Bitmap")
    End Try
  End Sub

#Region "Overridden Class Methods"

    ''' <summary>
    ''' Occurs when this command is created
    ''' </summary>
    ''' <param name="hook">Instance of the application</param>
    Public Overrides Sub OnCreate(ByVal hook As Object)
        If hook Is Nothing Then
            Return
        End If

        ' Test the hook that calls this command and disable if nothing is valid
        Try
            m_hookHelper = New HookHelperClass()
            m_hookHelper.Hook = hook
            If m_hookHelper.ActiveView Is Nothing Then
                m_hookHelper = Nothing
            End If
        Catch
            m_hookHelper = Nothing
        End Try
        If m_hookHelper Is Nothing Then
            'Can be globe
            Try
                m_globeHookHelper = New GlobeHookHelperClass()
                m_globeHookHelper.Hook = hook
                If m_globeHookHelper.ActiveViewer Is Nothing Then
                    m_globeHookHelper = Nothing
                End If
            Catch
                m_globeHookHelper = Nothing
            End Try
        End If

        If m_globeHookHelper Is Nothing AndAlso m_hookHelper Is Nothing Then
            MyBase.m_enabled = False
        Else
            MyBase.m_enabled = True
        End If

    End Sub

    ''' <summary>
    ''' Occurs when this command is clicked
    ''' </summary>
    Public Overrides Sub OnClick()
        Dim basicMap As IBasicMap = Nothing
        If m_hookHelper IsNot Nothing Then
            basicMap = TryCast(m_hookHelper.FocusMap, IBasicMap)
        ElseIf m_globeHookHelper IsNot Nothing Then
            basicMap = TryCast(m_globeHookHelper.Globe, IBasicMap)
        End If

        If basicMap Is Nothing Then
            Return
        End If

        Try
            If Not m_bConnected Then
                m_rssWeather = New RSSWeather()
                m_rssWeather.Init(basicMap)
            Else
                m_rssWeather.Remove()
                m_rssWeather = Nothing
            End If

            m_bConnected = Not m_bConnected
        Catch ex As Exception
            System.Diagnostics.Trace.WriteLine(ex.Message)
        End Try
    End Sub

    Public Overrides ReadOnly Property Checked() As Boolean
        Get
            Return m_bConnected
        End Get
    End Property

#End Region
End Class