' Copyright 2012 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 ESRI.ArcGIS.esriSystem
Imports ESRI.ArcGIS.Catalog
Imports ESRI.ArcGIS.CatalogUI
Imports ESRI.ArcGIS.ADF.CATIDs

Imports System.Runtime.InteropServices

<ComClass(clsGxStyleView.ClassId, clsGxStyleView.InterfaceId, clsGxStyleView.EventsId), _
 ProgId("CustomRootObjectVBNET.clsGxStyleView")> _
Public Class clsGxStyleView
    Implements ESRI.ArcGIS.CatalogUI.IGxView
#Region "COM Registration Function(s)"
    <ComRegisterFunction(), ComVisibleAttribute(False)> _
    Public Shared Sub RegisterFunction(ByVal registerType As Type)
        ' Required for ArcGIS Component Category Registrar support
        ArcGISCategoryRegistration(registerType)

        'Add any COM registration code after the ArcGISCategoryRegistration() call

    End Sub

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

        'Add any COM unregistration code after the ArcGISCategoryUnregistration() call

    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)
        GxPreviews.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)
        GxPreviews.Unregister(regKey)

    End Sub

#End Region
#End Region


#Region "COM GUIDs"
    ' These  GUIDs provide the COM identity for this class 
    ' and its COM interfaces. If you change them, existing 
    ' clients will no longer be able to access the class.
    Public Const ClassId As String = "b12f0fcd-0ff9-49d3-85c3-81329b2bafd1"
    Public Const InterfaceId As String = "010f70e3-107e-4a3c-83e5-eb8a3dfac558"
    Public Const EventsId As String = "5a92b1a5-e996-4758-9e2f-c0ca49d2f08f"
#End Region

    ' A creatable COM class must have a Public Sub New() 
    ' with no parameters, otherwise, the class will not be 
    ' registered in the COM registry and cannot be created 
    ' via CreateObject.

#Region "Member Variables"
    Private m_pApp As IGxApplication
    Private m_pCatalog As IGxCatalog
    Private m_pItem As clsGxStyleGalleryItem
    Private frmGxStyleView As New FrmGxStyleView
    'Subscribe to the events coming from the GxSelection.
    Private WithEvents m_pSelection As GxSelection
#End Region
    Public Sub New()
        MyBase.New()
    End Sub
    Public Sub PreviewItem(ByVal hDC As Long, ByVal r As tagRECT)
        If m_pItem Is Nothing Then Exit Sub
        m_pItem.PreviewItem(hDC, r)
    End Sub
    Private Sub m_pSelection_OnSelectionChanged(ByVal Selection As IGxSelection, ByRef initiator As Object) Handles m_pSelection.OnSelectionChanged
        Refresh()
        frmGxStyleView.RefreshView()
    End Sub

    Public Sub Activate(ByVal Application As ESRI.ArcGIS.CatalogUI.IGxApplication, ByVal Catalog As ESRI.ArcGIS.Catalog.IGxCatalog) Implements ESRI.ArcGIS.CatalogUI.IGxView.Activate
        m_pApp = Application
        m_pCatalog = Catalog
        m_pSelection = Catalog.Selection
        frmGxStyleView.GxStyleView = Me
        Refresh()
    End Sub

    Public Function Applies(ByVal Selection As ESRI.ArcGIS.Catalog.IGxObject) As Boolean Implements ESRI.ArcGIS.CatalogUI.IGxView.Applies
        Applies = TypeOf Selection Is clsGxStyleGalleryItem
    End Function

    Public ReadOnly Property ClassID1() As ESRI.ArcGIS.esriSystem.UID Implements ESRI.ArcGIS.CatalogUI.IGxView.ClassID
        Get
            Dim pUID As IUID
            pUID = New UID
            pUID.Value = "CustomRootObjectVBNET.clsGxStyleView"
            ClassID1 = pUID
        End Get
    End Property

    Public Sub Deactivate() Implements ESRI.ArcGIS.CatalogUI.IGxView.Deactivate
        frmGxStyleView.GxStyleView = Nothing
        m_pApp = Nothing
        m_pCatalog = Nothing
    End Sub

    Public ReadOnly Property DefaultToolbarCLSID() As ESRI.ArcGIS.esriSystem.UID Implements ESRI.ArcGIS.CatalogUI.IGxView.DefaultToolbarCLSID
        Get
            DefaultToolbarCLSID = Nothing
        End Get
    End Property

    Public ReadOnly Property hWnd() As Integer Implements ESRI.ArcGIS.CatalogUI.IGxView.hWnd
        Get
            hWnd = frmGxStyleView.picStylePreview.Handle
        End Get
    End Property

    Public ReadOnly Property Name() As String Implements ESRI.ArcGIS.CatalogUI.IGxView.Name
        Get
            Name = "Style"
        End Get
    End Property
    Public Sub Refresh() Implements ESRI.ArcGIS.CatalogUI.IGxView.Refresh
        Dim pSelection As IGxObject
        pSelection = m_pCatalog.SelectedObject
        If TypeOf pSelection Is clsGxStyleGalleryItem Then
            m_pItem = pSelection
            frmGxStyleView.RefreshView()
        Else
            m_pItem = Nothing
        End If
    End Sub

    Public ReadOnly Property SupportsTools() As Boolean Implements ESRI.ArcGIS.CatalogUI.IGxView.SupportsTools
        Get
            SupportsTools = False
        End Get
    End Property

    Public Sub SystemSettingChanged(ByVal flag As Integer, ByVal section As String) Implements ESRI.ArcGIS.CatalogUI.IGxView.SystemSettingChanged

    End Sub
End Class