' 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 Microsoft.VisualBasic
Imports System
Imports System.Drawing
Imports System.Runtime.InteropServices
Imports System.Windows.Forms
Imports ESRI.ArcGIS.ADF.BaseClasses
Imports ESRI.ArcGIS.ADF.CATIDs
Imports ESRI.ArcGIS.Controls
Imports ESRI.ArcGIS.Carto
Imports ESRI.ArcGIS.SystemUI

Namespace MapControlAppPropertyPage
  ''' <summary>
  ''' Summary description for CreateNewDocument.
  ''' </summary>
  Public Class CreateNewDocument : Inherits BaseCommand
  Private m_hookHelper As IHookHelper = Nothing

  'Ctor
  Public Sub New()
    'update the base properties
    MyBase.m_category = ".NET Samples"
    MyBase.m_caption = "NewDocument"
    MyBase.m_message = "Create a new map"
    MyBase.m_toolTip = "Create a new map"
    MyBase.m_name = MyBase.m_category & "_" & MyBase.m_caption
  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 m_hookHelper Is Nothing Then
                m_hookHelper = New HookHelperClass()
            End If

            m_hookHelper.Hook = hook
        End Sub

        ''' <summary>
        ''' Occurs when this command is clicked
        ''' </summary>
        Public Overrides Sub OnClick()
            Dim mapControl As IMapControl3 = Nothing

            'get the MapControl from the hook in case the container is a ToolbatControl
            If TypeOf m_hookHelper.Hook Is IToolbarControl Then
                mapControl = CType((CType(m_hookHelper.Hook, IToolbarControl)).Buddy, IMapControl3)
                'In case the container is MapControl
            ElseIf TypeOf m_hookHelper.Hook Is IMapControl3 Then
                mapControl = CType(m_hookHelper.Hook, IMapControl3)
            Else
                MessageBox.Show("Active control must be MapControl!", "Warning", MessageBoxButtons.OK, MessageBoxIcon.Exclamation)
                Return
            End If

            'allow the user to save the current document
            Dim res As DialogResult = MessageBox.Show("Would you like to save the current document?", "AoView", MessageBoxButtons.YesNo, MessageBoxIcon.Question)
            If res = DialogResult.Yes Then
                'launch the save command (why work hard!?)
                Dim command As ICommand = New ControlsSaveAsDocCommandClass()
                command.OnCreate(m_hookHelper.Hook)
                command.OnClick()
            End If

            'create a new Map
            Dim map As IMap = New MapClass()
            map.Name = "Map"

            'assign the new map to the MapControl
            mapControl.DocumentFilename = String.Empty
            mapControl.Map = map
        End Sub

#End Region
  End Class
End Namespace