' 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 Microsoft.VisualBasic
Imports System
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>
  ''' Refreshes the layer's data (runs the layer update thread)
  ''' </summary>     
  <Guid("30FD7DC6-6696-4101-99AD-4C8CDE968E4B"), ProgId("RefreshLayerCmd"), ComVisible(True)> _
  Public Class RefreshLayerCmd : Inherits BaseCommand
  #Region "COM Registration Function(s)"
  <ComRegisterFunction(), ComVisible(False)> _
  Private Shared Sub RegisterFunction(ByVal registerType As Type)
    ' Required for ArcGIS Component Category Registrar support
    ArcGISCategoryRegistration(registerType)

    '
    ' TODO: Add any COM registration code here
    '
  End Sub

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

    '
    ' TODO: Add any COM unregistration code here
    '
  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(ByVal registerType As Type)
    Dim regKey As String = String.Format("HKEY_CLASSES_ROOT\CLSID\{{{0}}}", registerType.GUID)
    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(ByVal registerType As Type)
    Dim regKey As String = String.Format("HKEY_CLASSES_ROOT\CLSID\{{{0}}}", registerType.GUID)
    ControlsCommands.Unregister(regKey)
  End Sub

  #End Region
  #End Region

  'Class members
  Private m_hookHelper As IHookHelper = Nothing

  ''' <summary>
  ''' CTor
  ''' </summary>
    Public Sub New()
      MyBase.m_category = "Weather"
      MyBase.m_caption = "Refresh layer"
      MyBase.m_message = "Refresh the layer"
      MyBase.m_toolTip = "Refresh layer"
      MyBase.m_name = MyBase.m_category & "_" & MyBase.m_caption

      Try
        MyBase.m_bitmap = New Bitmap(Me.GetType().Assembly.GetManifestResourceStream(Me.GetType(), "RefreshLayerCmd.bmp"))
      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)
        'Instantiate the hook helper
        If m_hookHelper Is Nothing Then
            m_hookHelper = New HookHelperClass()
        End If

        'set the hook
        m_hookHelper.Hook = hook
    End Sub

    ''' <summary>
    ''' Occurs when this command is clicked
    ''' </summary>
    Public Overrides Sub OnClick()
        Try
            If 0 = m_hookHelper.FocusMap.LayerCount Then
                Return
            End If

            Dim weatherLayer As RSSWeatherLayerClass = Nothing

            'get the weather layer
            Dim layers As IEnumLayer = m_hookHelper.FocusMap.Layers(Nothing, False)
            layers.Reset()
            Dim layer As ILayer = layers.Next()
            Do While Not layer Is Nothing
                If TypeOf layer Is RSSWeatherLayerClass Then
                    weatherLayer = CType(layer, RSSWeatherLayerClass)
                    weatherLayer.Refresh()
                    Return
                End If
                layer = layers.Next()
            Loop
        Catch ex As Exception
            System.Diagnostics.Trace.WriteLine(ex.Message)
        End Try
    End Sub

#End Region
  End Class