'****************************************************************************
'* Archie Jacobs
'* Manufacturing Automation, LLC
'* support@advancedhmi.com
'* 12-JUN-11
'*
'* Copyright 2011 Archie Jacobs
'*
'* Distributed under the GNU General Public License (www.gnu.org)
'*
'* This program is free software; you can redistribute it and/or
'* as published by the Free Software Foundation; either version 2
'* of the License, or (at your option) any later version.
'*
'* This program is distributed in the hope that it will be useful,
'* but WITHOUT ANY WARRANTY; without even the implied warranty of
'* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
'* GNU General Public License for more details.

'* You should have received a copy of the GNU General Public License
'* along with this program; if not, write to the Free Software
'* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
'*
'* 08-JUN-13 Created to make extending easier
'****************************************************************************
Public Class DigitalPanelMeter
    Inherits MfgControl.AdvancedHMI.Controls.DigitalPanelMeter

    Implements IDisposable

#Region "PLC Related Properties"
    '*****************************************************
    '* Property - Component to communicate to PLC through
    '*****************************************************
    Private m_ComComponent As MfgControl.AdvancedHMI.Drivers.IComComponent
    <System.ComponentModel.Category("PLC Properties")> _
    Public Property ComComponent() As MfgControl.AdvancedHMI.Drivers.IComComponent
        Get
            Return m_ComComponent
        End Get
        Set(ByVal value As MfgControl.AdvancedHMI.Drivers.IComComponent)
            If m_ComComponent IsNot value Then
                If SubScriptions IsNot Nothing Then
                    SubScriptions.UnsubscribeAll()
                    SubScriptions.ComComponent = m_ComComponent
                End If

                m_ComComponent = value

                SubscribeToComDriver()
            End If
        End Set
    End Property


    '*****************************************
    '* Property - Address in PLC to Link to
    '*****************************************
    Private m_PLCAddressText As String = ""
    <System.ComponentModel.DefaultValue("")> _
    <System.ComponentModel.Category("PLC Properties")> _
    Public Property PLCAddressText() As String
        Get
            Return m_PLCAddressText
        End Get
        Set(ByVal value As String)
            If m_PLCAddressText <> value Then
                m_PLCAddressText = value

                '* When address is changed, re-subscribe to new address
                SubscribeToComDriver()
            End If
        End Set
    End Property

    '*****************************************
    '* Property - Address in PLC to Link to
    '*****************************************
    Private m_PLCAddressVisible As String = ""
    <System.ComponentModel.DefaultValue("")> _
    <System.ComponentModel.Category("PLC Properties")> _
    Public Property PLCAddressVisible() As String
        Get
            Return m_PLCAddressVisible
        End Get
        Set(ByVal value As String)
            If m_PLCAddressVisible <> value Then
                m_PLCAddressVisible = value

                ' If Not String.IsNullOrEmpty(m_PLCAddressVisible) Then
                '* When address is changed, re-subscribe to new address
                SubscribeToComDriver()
                'End If
            End If
        End Set
    End Property

    '*****************************************
    '* Property - Address in PLC to Link to
    '*****************************************
    Private m_PLCAddressValue As String = ""
    <System.ComponentModel.DefaultValue("")> _
    <System.ComponentModel.Category("PLC Properties")> _
    Public Property PLCAddressValue() As String
        Get
            Return m_PLCAddressValue
        End Get
        Set(ByVal value As String)
            If m_PLCAddressValue <> value Then
                m_PLCAddressValue = value

                '* When address is changed, re-subscribe to new address
                SubscribeToComDriver()
            End If
        End Set
    End Property


    Private m_SuppressErrorDisplay As Boolean
    <System.ComponentModel.DefaultValue(False)> _
    Public Property SuppressErrorDisplay As Boolean
        Get
            Return m_SuppressErrorDisplay
        End Get
        Set(value As Boolean)
            m_SuppressErrorDisplay = value
        End Set
    End Property
#End Region

#Region "Events"
    '********************************************************************
    '* When an instance is added to the form, set the comm component
    '* property. If a comm component does not exist, add one to the form
    '********************************************************************
    Protected Overrides Sub OnCreateControl()
        MyBase.OnCreateControl()

        If Me.DesignMode Then
            '********************************************************
            '* Search for AdvancedHMIDrivers.IComComponent component in parent form
            '* If one exists, set the client of this component to it
            '********************************************************
            Dim i As Integer = 0
            While m_ComComponent Is Nothing And i < Me.Site.Container.Components.Count
                If Me.Site.Container.Components(i).GetType.GetInterface("IComComponent") IsNot Nothing Then m_ComComponent = Me.Site.Container.Components(i)
                i += 1
            End While

            '************************************************
            '* If no comm component was found, then add one and
            '* point the ComComponent property to it
            '*********************************************
            If m_ComComponent Is Nothing Then
                m_ComComponent = New AdvancedHMIDrivers.EthernetIPforCLXCom(Me.Site.Container)
            End If
        Else
            SubscribeToComDriver()
            'Console.WriteLine("After STCM in OnCreateControl")
        End If
    End Sub
#End Region

#Region "Constructor/Destructor"
    Public Sub New()
        MyBase.New()
    End Sub

    'Public Sub New(ByVal Container As System.ComponentModel.IContainer)
    '    Me.New()
    '    'Required for Windows.Forms Class Composition Designer support
    '    Container.Add(Me)
    'End Sub

    '****************************************************************
    '* UserControl overrides dispose to clean up the component list.
    '****************************************************************
    Protected Overrides Sub Dispose(ByVal disposing As Boolean)
        Try
            If disposing Then
                If SubScriptions IsNot Nothing Then
                    SubScriptions.dispose()
                End If
            End If
        Finally
            MyBase.Dispose(disposing)
        End Try
    End Sub
#End Region

#Region "Subscribing and PLC data receiving"
    Private SubScriptions As SubscriptionHandler
    '**************************************************
    '* Subscribe to addresses in the Comm(PLC) Driver
    '**************************************************
    Private Sub SubscribeToComDriver()
        If Not DesignMode And IsHandleCreated Then
            '* Create a subscription handler object
            If SubScriptions Is Nothing Then
                SubScriptions = New SubscriptionHandler
                SubScriptions.Parent = Me
                AddHandler SubScriptions.DisplayError, AddressOf DisplaySubscribeError
            End If
            SubScriptions.ComComponent = m_ComComponent


            SubScriptions.SubscribeAutoProperties()
        End If
    End Sub

    '***************************************
    '* Call backs for returned data
    '***************************************
    Private OriginalText As String
    Private Sub PolledDataReturned(ByVal sender As Object, ByVal e As SubscriptionHandlerEventArgs)
    End Sub

    Private Sub DisplaySubscribeError(ByVal sender As Object, ByVal e As MfgControl.AdvancedHMI.Drivers.Common.PlcComEventArgs)
        DisplayError(e.ErrorMessage)
    End Sub
#End Region

#Region "Error Display"
    '********************************************************
    '* Show an error via the text property for a short time
    '********************************************************
    Private ErrorDisplayTime As System.Windows.Forms.Timer
    Private Sub DisplayError(ByVal ErrorMessage As String)
        If Not m_SuppressErrorDisplay Then
            If ErrorDisplayTime Is Nothing Then
                ErrorDisplayTime = New System.Windows.Forms.Timer
                AddHandler ErrorDisplayTime.Tick, AddressOf ErrorDisplay_Tick
                ErrorDisplayTime.Interval = 6000
            End If

            '* Save the text to return to
            If Not ErrorDisplayTime.Enabled Then
                OriginalText = Me.Text
            End If

            ErrorDisplayTime.Enabled = True

            Text = ErrorMessage
        End If
    End Sub


    '**************************************************************************************
    '* Return the text back to its original after displaying the error for a few seconds.
    '**************************************************************************************
    Private Sub ErrorDisplay_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs)
        Text = OriginalText

        If ErrorDisplayTime IsNot Nothing Then
            ErrorDisplayTime.Enabled = False
            ErrorDisplayTime.Dispose()
            ErrorDisplayTime = Nothing
        End If
    End Sub
#End Region

#Region "Keypad popup for data entry"
    Private KeypadPopUp As MfgControl.AdvancedHMI.Controls.Keypad

    'Public Property KPD As MfgControl.AdvancedHMI.Controls.Keypad
    '*****************************************
    '* Property - Address in PLC to Write Data To
    '*****************************************
    Private m_PLCAddressKeypad As String = ""
    <System.ComponentModel.Category("PLC Properties")> _
    Public Property PLCAddressKeypad() As String
        Get
            Return m_PLCAddressKeypad
        End Get
        Set(ByVal value As String)
            If m_PLCAddressKeypad <> value Then
                m_PLCAddressKeypad = value
            End If
        End Set
    End Property

    Private m_KeypadText As String
    Public Property KeypadText() As String
        Get
            Return m_KeypadText
        End Get
        Set(ByVal value As String)
            m_KeypadText = value
        End Set
    End Property

    Private m_KeypadFontColor As Color = Color.WhiteSmoke
    Public Property KeypadFontColor() As Color
        Get
            Return m_KeypadFontColor
        End Get
        Set(ByVal value As Color)
            m_KeypadFontColor = value
        End Set
    End Property


    Private m_KeypadWidth As Integer = 300
    Public Property KeypadWidth() As Integer
        Get
            Return m_KeypadWidth
        End Get
        Set(ByVal value As Integer)
            m_KeypadWidth = value
        End Set
    End Property

    Private m_KeypadScaleFactor As Double = 1
    Public Property KeypadScaleFactor() As Double
        Get
            Return m_KeypadScaleFactor
        End Get
        Set(ByVal value As Double)
            m_KeypadScaleFactor = value
        End Set
    End Property

    Private m_KeypadMinValue As Double
    Public Property KeypadMinValue As Double
        Get
            Return m_KeypadMinValue
        End Get
        Set(value As Double)
            m_KeypadMinValue = value
        End Set
    End Property

    Private m_KeypadMaxValue As Double
    Public Property KeypadMaxValue As Double
        Get
            Return m_KeypadMaxValue
        End Get
        Set(value As Double)
            m_KeypadMaxValue = value
        End Set
    End Property


    Private Sub KeypadPopUp_ButtonClick(ByVal sender As Object, ByVal e As MfgControl.AdvancedHMI.Controls.KeyPadEventArgs)
        If e.Key = "Quit" Then
            KeypadPopUp.Visible = False
        ElseIf e.Key = "Enter" Then
            If m_ComComponent Is Nothing Then
                DisplayError("ComComponent Property not set")
            Else
                If KeypadPopUp.Value IsNot Nothing AndAlso (String.Compare(KeypadPopUp.Value, "") <> 0) Then
                    Try
                        If m_KeypadMaxValue <> m_KeypadMinValue Then
                            If KeypadPopUp.Value < m_KeypadMinValue Or KeypadPopUp.Value > m_KeypadMaxValue Then
                                System.Windows.Forms.MessageBox.Show("Value must be >" & m_KeypadMinValue & " and <" & m_KeypadMaxValue)
                                Exit Sub
                            End If
                        End If
                    Catch ex As Exception
                        System.Windows.Forms.MessageBox.Show("Failed to validate value. " & ex.Message)
                        Exit Sub
                    End Try

                    Try
                        If KeypadScaleFactor = 1 Or KeypadScaleFactor = 0 Then
                            m_ComComponent.Write(m_PLCAddressKeypad, KeypadPopUp.Value)
                        Else
                            m_ComComponent.Write(m_PLCAddressKeypad, CDbl(KeypadPopUp.Value) / m_KeypadScaleFactor)
                        End If
                    Catch ex As Exception
                        System.Windows.Forms.MessageBox.Show("Failed to write value. " & ex.Message)
                    End Try
                End If
                KeypadPopUp.Visible = False
            End If
        End If
    End Sub

    '***********************************************************
    '* If labeled is clicked, pop up a keypad for data entry
    '***********************************************************
    Protected Overrides Sub OnClick(e As System.EventArgs)
        MyBase.OnClick(e)

        If m_PLCAddressKeypad IsNot Nothing AndAlso (String.Compare(m_PLCAddressKeypad, "") <> 0) And Enabled Then
            If KeypadPopUp Is Nothing Then
                KeypadPopUp = New MfgControl.AdvancedHMI.Controls.Keypad(m_KeypadWidth)
                AddHandler KeypadPopUp.ButtonClick, AddressOf KeypadPopUp_ButtonClick
            End If

            KeypadPopUp.Text = m_KeypadText
            KeypadPopUp.ForeColor = m_KeypadFontColor
            KeypadPopUp.Value = ""
            KeypadPopUp.StartPosition = Windows.Forms.FormStartPosition.CenterScreen
            KeypadPopUp.TopMost = True
            KeypadPopUp.Show()
        End If
    End Sub
#End Region

End Class
