Imports System.Collections.ObjectModel
Imports System.Runtime.InteropServices
Imports System.IO
Imports EgtUILib
Imports System.Threading

Namespace EgtCAM5

   Public Class StatusBarViewModel
      Inherits ViewModelBase

#Region "FIELDS & PROPERTIES"

      ' Funzioni di callback per output in interfaccia da LUA
      Private m_ProcEventsCallback As New ProcessEventsCallback(AddressOf ProcessEvents)
      Private m_OutTextCallback As New OutTextCallback(AddressOf OutText)

      ' GRAPHICAL ELEMENTS
      Private m_StatusOutput As String
      Public Property StatusOutput As String
         Get
            Return m_StatusOutput
         End Get
         Set(value As String)
            m_StatusOutput = value
            OnPropertyChanged("StatusOutput")
         End Set
      End Property

      Private m_StatusCurrPos As String
      Public Property StatusCurrPos As String
         Get
            Return m_StatusCurrPos
         End Get
         Set(value As String)
            m_StatusCurrPos = value
            OnPropertyChanged("StatusCurrPos")
         End Set
      End Property

      Private m_StatusProgress As Integer
      Public Property StatusProgress As Integer
         Get
            Return m_StatusProgress
         End Get
         Set(value As Integer)
            m_StatusProgress = value
            OnPropertyChanged("StatusProgress")
         End Set
      End Property

      Private m_StatusStopIsEnabled As Boolean
      Public Property StatusStopIsEnabled As Boolean
         Get
            Return m_StatusStopIsEnabled
         End Get
         Set(value As Boolean)
            m_StatusStopIsEnabled = value
            OnPropertyChanged("StatusStopIsEnabled")
         End Set
      End Property

      Private m_GridDimensionText As String
      Public Property GridDimensionText As String
         Get
            Return m_GridDimensionText
         End Get
         Set(value As String)
            m_GridDimensionText = value
            OnPropertyChanged("GridDimensionText")
         End Set
      End Property

      Private m_StatusGridText As String
      Public Property StatusGridText As String
         Get
            Return m_StatusGridText
         End Get
         Set(value As String)
            m_StatusGridText = value
            OnPropertyChanged("StatusGridText")
         End Set
      End Property

      Private m_CurrPosTypeText As String
      Public Property CurrPosTypeText As String
         Get
            Return m_CurrPosTypeText
         End Get
         Set(value As String)
            m_CurrPosTypeText = value
            OnPropertyChanged("CurrPosTypeText")
         End Set
      End Property

      Private m_StatusUnitsText As String
      Public Property StatusUnitsText As String
         Get
            Return m_StatusUnitsText
         End Get
         Set(value As String)
            m_StatusUnitsText = value
            OnPropertyChanged("StatusUnitsText")
         End Set
      End Property

      Private m_SnapPointTypeText As String
      Public Property SnapPointTypeText As String
         Get
            Return m_SnapPointTypeText
         End Get
         Set(value As String)
            m_SnapPointTypeText = value
            OnPropertyChanged("SnapPointTypeText")
         End Set
      End Property

      Private m_SnapPointTypeBackground As SolidColorBrush
      Public Property SnapPointTypeBackground As SolidColorBrush
         Get
            Return m_SnapPointTypeBackground
         End Get
         Set(value As SolidColorBrush)
            m_SnapPointTypeBackground = value
            OnPropertyChanged("SnapPointTypeBackground")
         End Set
      End Property

      ' Lista delle macchine disponibili nel programma
      Private m_MachinesList As New ObservableCollection(Of Machine)
      Public Property MachinesList As ObservableCollection(Of Machine)
         Get
            Return m_MachinesList
         End Get
         Set(value As ObservableCollection(Of Machine))
            m_MachinesList = value
         End Set
      End Property
      ' Macchina correntemente selezionata e quindi attiva
      Private m_SelectedMachine As Machine
      Public Property SelectedMachine As Machine
         Get
            Return m_SelectedMachine
         End Get
         Set(value As Machine)
            If value IsNot m_SelectedMachine Then
               EgtSetCurrentContext(IniFile.m_ProjectSceneContext)
               If EgtSetCurrMachine(value.Name) Then
                  m_SelectedMachine = value
                  IniFile.m_sMachineName = m_SelectedMachine.Name
                  IniFile.m_sCurrMachIniFilePath = m_SelectedMachine.MachineDirPath & "\" & m_SelectedMachine.Name & ".ini"
                  IniFile.m_sCurrMachToolsDirPath = m_SelectedMachine.MachineDirPath & "\Tools"
                  IniFile.m_sCurrMachSetUpDirPath = m_SelectedMachine.MachineDirPath & "\SetUp"
                  IniFile.m_sCurrMachScriptsDirPath = m_SelectedMachine.MachineDirPath & "\Scripts"
                  UpdateToolAndMachDbParamVisibility()
                  OnPropertyChanged("SelectedMachine")
               End If
            End If
         End Set
      End Property

      Private m_MachineListIsEnabled As Boolean
      Public Property MachineListIsEnabled As Boolean
         Get
            Return m_MachineListIsEnabled
         End Get
         Set(value As Boolean)
            m_MachineListIsEnabled = value
            OnPropertyChanged("MachineListIsEnabled")
         End Set
      End Property

      ' Commands definition
      Private m_cmdGridDimension As ICommand
      Private m_cmdGridDimensionLostFocus As ICommand
      Private m_cmdStatusGrid As ICommand
      Private m_cmdCurrPosType As ICommand
      Private m_cmdStatusUnits As ICommand
      Private m_cmdStatusStop As ICommand
      Private m_cmdClearStatusOutput As ICommand

#End Region    ' Fields & Properties

#Region "CONSTRUCTOR"

      Sub New()
         ' Creo riferimento a questa classe in EgtCAM5Map
         EgtCAM5Map.SetRefStatusBarVM(Me)
         Application.Msn.Register(Application.NOTIFYCURRPOS, Sub(sCursorPos As String)
                                                                StatusCurrPos = sCursorPos
                                                             End Sub)
         Application.Msn.Register(Application.NOTIFYSTATUSOUTPUT, Sub(sStatusOutput As String)
                                                                     StatusOutput = sStatusOutput
                                                                  End Sub)
         Application.Msn.Register(Application.NOTIFYSTATUSPROGRESS, Sub(sStatusProgress As Integer)
                                                                       StatusProgress = sStatusProgress
                                                                    End Sub)
         Application.Msn.Register(Application.NOTIFYSTATUSSTOP, Sub(sStatusStop As Boolean)
                                                                   StatusStopIsEnabled = sStatusStop
                                                                End Sub)
         Application.Msn.Register(Application.UPDATESTATUSGRID, Sub(UpdateStatusGridParam As UpdateStatusGridParam)
                                                                   UpdateStatusGrid(UpdateStatusGridParam.m_bShowGrid, UpdateStatusGridParam.m_bShowGridFrame)
                                                                End Sub)
         Application.Msn.Register(Application.STATUSCURRPOSTYPETEXT, Sub(sString As String)
                                                                        CurrPosTypeText = sString
                                                                     End Sub)
         Application.Msn.Register(Application.UPDATESTATUSUNITS, Sub(bMmUnits As Boolean)
                                                                    StatusUnitsText = If(bMmUnits, "mm", "in")
                                                                    EgtSetUiUnits(bMmUnits)
                                                                 End Sub)
         Application.Msn.Register(Application.STATUSSNAPPOINTTYPETEXT, Sub(sString As String)
                                                                          SnapPointTypeText = sString
                                                                       End Sub)
         Application.Msn.Register(Application.STATUSSNAPPOINTTYPEBACKGROUND, Sub(Color As SolidColorBrush)
                                                                                SnapPointTypeBackground = Color
                                                                             End Sub)
         SearchMachine()
         Application.Msn.Register(Application.LOADCURRENTMACHINE, Sub()
                                                                     If m_MachinesList.Count = 0 Then Return
                                                                     Dim CurrMach As String = String.Empty
                                                                     GetPrivateProfileString(S_MACH, K_CURRMACH, String.Empty, CurrMach)
                                                                     Dim bFound As Boolean = False
                                                                     If Not String.IsNullOrEmpty(CurrMach) Then
                                                                        For Each Mach In MachinesList
                                                                           If Mach.Name = CurrMach Then
                                                                              bFound = True
                                                                              SelectedMachine = Mach
                                                                              Exit For
                                                                           End If
                                                                        Next
                                                                     End If
                                                                     If Not bFound And MachinesList.Count > 0 Then
                                                                        SelectedMachine = MachinesList(0)
                                                                     End If
                                                                  End Sub)
         Application.Msn.Register(Application.SAVECURRENTMACHINE, Sub()
                                                                     If IsNothing(m_SelectedMachine) Then Return
                                                                     WritePrivateProfileString(S_MACH, K_CURRMACH, SelectedMachine.Name)
                                                                  End Sub)
         Application.Msn.Register(Application.UPDATECURRENTMACHINE, Sub()
                                                                       EgtSetCurrentContext(IniFile.m_ProjectSceneContext)
                                                                       Dim sMachName As String = String.Empty
                                                                       If EgtGetCurrMachineName(sMachName) Then
                                                                          For Each Mach In MachinesList
                                                                             If Mach.Name = sMachName Then
                                                                                SelectedMachine = Mach
                                                                                Exit For
                                                                             End If
                                                                          Next
                                                                       End If
                                                                    End Sub)
         Application.Msn.Register(Application.MAINWINDOW_CONTENTRENDERED, Sub()
                                                                             If IniFile.m_bMmUnits Then
                                                                                GridDimensionText = LenToString(IniFile.dSnapStepMm, 4)
                                                                             Else
                                                                                GridDimensionText = LenToString(IniFile.dSnapStepInch, 4)
                                                                             End If
                                                                             If IniFile.m_ProjectMode = ProjectModeOpt.ONLYDRAW Then
                                                                                MachineListIsEnabled = False
                                                                             End If
                                                                          End Sub)
         Application.Msn.Register(Application.MACHININGMODE_ISCHECKED, Sub()
                                                                          StatusOutput = String.Empty
                                                                          MachineListIsEnabled = False
                                                                       End Sub)
         Application.Msn.Register(Application.DRAWMODE_ISCHECKED, Sub()
                                                                     StatusOutput = String.Empty
                                                                     MachineListIsEnabled = True
                                                                  End Sub)
         ' Installo funzione gestione eventi per lua
         EgtSetProcessEvents(m_ProcEventsCallback)
         ' Installo funzione output testo su status per lua
         EgtSetOutText(m_OutTextCallback)
      End Sub

#End Region    ' Constructor

#Region "COMMANDS"

#Region "GridDimensionCommand"

      ''' <summary>
      ''' Returns a command that set grid status.
      ''' </summary>
      Public ReadOnly Property GridDimensionCommand As ICommand
         Get
            If m_cmdGridDimension Is Nothing Then
               m_cmdGridDimension = New RelayCommand(AddressOf GridDimension)
            End If
            Return m_cmdGridDimension
         End Get
      End Property

      ''' <summary>
      ''' Notify the function to set the status.  This method is invoked by the StatusGridCommand.
      ''' </summary>
      Public Sub GridDimension(ByVal param As Object)
         If IniFile.m_bMmUnits Then
            StringToLen(GridDimensionText, IniFile.dSnapStepMm)
            EgtSetGridGeo(IniFile.dSnapStepMm, IniFile.nMinLineSStep, IniFile.nMajLineSStep, IniFile.nExtSStep)
         Else
            StringToLen(GridDimensionText, IniFile.dSnapStepInch)
            EgtSetGridGeo(IniFile.dSnapStepInch, IniFile.nMinLineSStep, IniFile.nMajLineSStep, IniFile.nExtSStep)
         End If
         EgtSetGridColor(IniFile.MinLnColor, IniFile.MajLnColor)
         Keyboard.ClearFocus()
         EgtDraw()
      End Sub

#End Region ' GridDimensionCommand

#Region "GridDimensionLostFocusCommand"

      ''' <summary>
      ''' Returns a command that set grid status.
      ''' </summary>
      Public ReadOnly Property GridDimensionLostFocusCommand As ICommand
         Get
            If m_cmdGridDimensionLostFocus Is Nothing Then
               m_cmdGridDimensionLostFocus = New RelayCommand(AddressOf GridDimensionLostFocus)
            End If
            Return m_cmdGridDimensionLostFocus
         End Get
      End Property

      ''' <summary>
      ''' Notify the function to set the status.  This method is invoked by the StatusGridCommand.
      ''' </summary>
      Public Sub GridDimensionLostFocus(ByVal param As Object)
         If IniFile.m_bMmUnits Then
            GridDimensionText = LenToString(IniFile.dSnapStepMm, 4)
         Else
            GridDimensionText = LenToString(IniFile.dSnapStepInch, 4)
         End If
      End Sub

#End Region ' GridDimensionLostFocusCommand

#Region "StatusGridCommand"

      ''' <summary>
      ''' Returns a command that set grid status.
      ''' </summary>
      Public ReadOnly Property StatusGridCommand As ICommand
         Get
            If m_cmdStatusGrid Is Nothing Then
               m_cmdStatusGrid = New RelayCommand(AddressOf StatusGrid)
            End If
            Return m_cmdStatusGrid
         End Get
      End Property

      ''' <summary>
      ''' Notify the function to set the status.  This method is invoked by the StatusGridCommand.
      ''' </summary>
      Public Sub StatusGrid(ByVal param As Object)
         Dim bGridState As Boolean
         If IniFile.m_ProjectMode = ProjectModeOpt.DRAW OrElse IniFile.m_ProjectMode = ProjectModeOpt.ONLYDRAW Then
            IniFile.m_bDrawShowGrid = Not IniFile.m_bDrawShowGrid
            bGridState = m_bDrawShowGrid
         ElseIf IniFile.m_ProjectMode = ProjectModeOpt.MACHINING Then
            IniFile.m_bMachiningShowGrid = Not IniFile.m_bMachiningShowGrid
            bGridState = m_bMachiningShowGrid
         End If
         Application.Msn.NotifyColleagues(Application.UPDATESTATUSGRID, New UpdateStatusGridParam(bGridState, IniFile.m_bShowGridFrame))
         EgtDraw()
      End Sub

#End Region ' StatusGridCommand

#Region "CurrPosTypeCommand"

      ''' <summary>
      ''' Returns a command that choose the current reference.
      ''' </summary>
      Public ReadOnly Property CurrPosTypeCommand As ICommand
         Get
            If m_cmdCurrPosType Is Nothing Then
               m_cmdCurrPosType = New RelayCommand(AddressOf CurrPosType)
            End If
            Return m_cmdCurrPosType
         End Get
      End Property

      ''' <summary>
      ''' Execute the Point.  This method is invoked by the CurrPosTypeCommand.
      ''' </summary>
      Public Sub CurrPosType(ByVal param As Object)
         Application.Msn.NotifyColleagues(Application.STATUSCURRPOSTYPECOMMAND)
      End Sub

#End Region ' CurrPosTypeCommand

#Region "StatusUnitsCommand"

      ''' <summary>
      ''' Returns a command that choose the current reference.
      ''' </summary>
      Public ReadOnly Property StatusUnitsCommand As ICommand
         Get
            If m_cmdStatusUnits Is Nothing Then
               m_cmdStatusUnits = New RelayCommand(AddressOf StatusUnits)
            End If
            Return m_cmdStatusUnits
         End Get
      End Property

      ''' <summary>
      ''' Execute the Point.  This method is invoked by the CurrPosTypeCommand.
      ''' </summary>
      Public Sub StatusUnits(ByVal param As Object)
         Application.Msn.NotifyColleagues(Application.STATUSUNITSCOMMAND)
         If IniFile.m_bMmUnits Then
            GridDimensionText = LenToString(IniFile.dSnapStepMm, 4)
         Else
            GridDimensionText = LenToString(IniFile.dSnapStepInch, 4)
         End If
      End Sub

#End Region ' StatusUnitsCommand

#Region "StatusStopCommand"

      ''' <summary>
      ''' Returns a command that choose the current reference.
      ''' </summary>
      Public ReadOnly Property StatusStopCommand As ICommand
         Get
            If m_cmdStatusStop Is Nothing Then
               m_cmdStatusStop = New RelayCommand(AddressOf StatusStop)
            End If
            Return m_cmdStatusStop
         End Get
      End Property

      ''' <summary>
      ''' Execute the Point.  This method is invoked by the CurrPosTypeCommand.
      ''' </summary>
      Public Sub StatusStop(ByVal param As Object)
         m_bStopScript = True
      End Sub

#End Region ' StatusStopCommand

#Region "ClearStatusOutputCommand"

      ''' <summary>
      ''' Returns a command that choose the current reference.
      ''' </summary>
      Public ReadOnly Property ClearStatusOutputCommand As ICommand
         Get
            If m_cmdClearStatusOutput Is Nothing Then
               m_cmdClearStatusOutput = New RelayCommand(AddressOf ClearStatusOutput)
            End If
            Return m_cmdClearStatusOutput
         End Get
      End Property

      ''' <summary>
      ''' Execute the Point.  This method is invoked by the CurrPosTypeCommand.
      ''' </summary>
      Public Sub ClearStatusOutput(ByVal param As Object)
         StatusOutput = String.Empty
      End Sub

#End Region ' ClearStatusOutputCommand

#End Region ' Commands

#Region "METHODS"

      Private Sub UpdateStatusGrid(bShowGrid As Boolean, bShowGridFrame As Boolean)
         'tsStatusGrid.ForeColor = If(m_bShowGrid, Color.Black, Color.Gray)
         StatusGridText = If(bShowGrid, "GRID ON ", "GRID OFF")
         EgtSetGridShow(bShowGrid, bShowGrid And bShowGridFrame)
      End Sub

      ''' <summary>
      ''' Method that search the machines in the correct folder and add to the MachinesList those valid.
      ''' </summary>
      Private Sub SearchMachine()
         ' Se direttorio base macchine non definito o non esiste, ritorno
         If String.IsNullOrWhiteSpace(IniFile.m_sMachinesRoot) OrElse
            Not Directory.Exists(IniFile.m_sMachinesRoot) OrElse Directory.GetDirectories(IniFile.m_sMachinesRoot).Count = 0 Then
            IniFile.m_ProjectMode = ProjectModeOpt.ONLYDRAW
            EgtOutLog(EgtMsg(MSG_STATUSBAR + 1))
            Return
         End If
         ' Cerco le macchine
         Dim TempArray As String() = Directory.GetDirectories(IniFile.m_sMachinesRoot)
         For i As Integer = 0 To TempArray.Count - 1
            Dim MachinePathIni As String = TempArray(i) & "\" & Path.GetFileName(TempArray(i)) & ".ini"
            If File.Exists(MachinePathIni) Then
               m_MachinesList.Add(New Machine With {.Name = Path.GetFileName(TempArray(i)), .MachineDirPath = TempArray(i)})
            End If
         Next
         If m_MachinesList.Count = 0 Then
            IniFile.m_ProjectMode = ProjectModeOpt.ONLYDRAW
            EgtOutLog(EgtMsg(MSG_STATUSBAR + 1))
            Return
         End If
      End Sub

      ''' <summary>
      ''' Class that create the association Name/IniPath for the machine's
      ''' </summary>
      Class Machine

         Private m_sName As String
         Public Property Name As String
            Get
               Return m_sName
            End Get
            Set(value As String)
               m_sName = value
            End Set
         End Property

         Friend MachineDirPath As String

      End Class

      Private Sub UpdateToolAndMachDbParamVisibility()
         If EgtUILib.GetPrivateProfileInt(S_MACHININGS, K_SAWINGONARCS, 0, IniFile.m_sCurrMachIniFilePath) <> 0 Then
            Sawing(39) = Visibility.Visible                               ' StepExtArc
            Sawing(40) = Visibility.Visible                               ' StepIntArc
         Else
            Sawing(39) = Visibility.Collapsed                               ' StepExtArc
            Sawing(40) = Visibility.Collapsed                               ' StepIntArc
         End If
      End Sub

      Public Function OutText(ByRef psText As IntPtr) As Boolean
         ' Assegno stringa
         StatusOutput = (Marshal.PtrToStringUni(psText))
         ' Costringo ad aggiornare
         UpdateUI()
         Return True
      End Function

      Private Function ProcessEvents(ByVal nProg As Integer, ByVal nPause As Integer) As Integer
         ' Se previsto, imposto progress
         If nProg > 0 Then StatusProgress = Math.Min(nProg, 100)
         ' Notifico a simulazione aggiornamento dati
         Application.Msn.NotifyColleagues(Application.SIMULATIONEXPANDER_UPDATE_CNCDATA)
         ' Costringo ad aggiornare
         UpdateUI()
         ' Eventuale attesa
         Thread.Sleep(nPause)
         ' Ritorno eventuale stop
         If m_bStopScript Then
            m_bStopScript = False
            Return 0
         Else
            Return 1
         End If
      End Function

#End Region    ' Methods

   End Class

End Namespace