Imports System.Windows
Imports System.Windows.Controls.Primitives
Imports EgtWPFLib5

Public Class MTableDbV

   Private m_MTableDbVM As MTableDbVM
   Private m_EditCell As DataGridCell

   Sub New(Owner As Window, MTableDbVM As MTableDbVM)
      MyBase.New(Owner)
      ' This call is required by the designer.
      InitializeComponent()
      Me.DataContext = MTableDbVM
      ' Assegno al riferimento locale al VM il VM preso dal DataContext
      m_MTableDbVM = MTableDbVM
   End Sub

   Private Sub LeftTableMouseDown(sender As Object, e As MouseButtonEventArgs)
      m_MTableDbVM.FocusedTable = MTableDbVM.Tables.LEFTTABLE
      m_MTableDbVM.ResetRightTableSelection()
   End Sub

   Private Sub RowMouseDown(sender As Object, e As MouseButtonEventArgs)
      m_MTableDbVM.FocusedTable = MTableDbVM.Tables.RIGHTTABLE
      m_MTableDbVM.ResetLeftTableSelection()
   End Sub

   Private Sub RowRightClick(sender As Object, e As MouseButtonEventArgs)
      m_MTableDbVM.FocusedTable = MTableDbVM.Tables.RIGHTTABLE
      m_MTableDbVM.ResetLeftTableSelection()
      e.Handled = True
   End Sub

   Private Sub CellLeftClick(sender As Object, e As MouseButtonEventArgs)
      Dim CurrCell As DataGridCell = Nothing
      If TypeOf sender Is DataGridCell Then
         CurrCell = DirectCast(sender, DataGridCell)
      End If
      Dim SelectedRow As MTableMachiningGridBoxItem = DirectCast(CurrCell.DataContext, MTableMachiningGridBoxItem)
      Dim bFirstInGroup As Boolean = True
      For TableIndex = 0 To MTableDbVM.refMTableDbVM.TablesList.Count - 1
         Dim CurrTable As MTableListBoxItem = MTableDbVM.refMTableDbVM.TablesList(TableIndex)
         If CurrTable.IsSelected Then
            Dim CurrMachiningIndex As Integer = CurrTable.SelMachine.MachiningList.IndexOf(SelectedRow)
            If CurrMachiningIndex > 0 AndAlso CurrTable.SelMachine.MachiningList(CurrMachiningIndex - 1).GroupId = SelectedRow.GroupId Then
               bFirstInGroup = False
            End If
         End If
      Next
      Dim bSelCell As Boolean = False
      If Not IsNothing(CurrCell) AndAlso TypeOf CurrCell.DataContext Is MTableMachiningGridBoxItem Then
         If CurrCell.IsSelected And SelectedRow.GroupId <> 0 Then
            If (bFirstInGroup And (CurrCell.Column Is MachiningDataGrid.Columns(1))) Then
               CurrCell.IsEditing = True
               If Not IsNothing(m_EditCell) AndAlso m_EditCell IsNot CurrCell Then m_EditCell.IsEditing = False
               m_EditCell = CurrCell
               bSelCell = True
            ElseIf Not CurrCell.IsEditing And CurrCell.Column Is MachiningDataGrid.Columns(4) Then
               SelectedRow.Join = Not SelectedRow.Join
               SelectedRow.NotifyPropertyChanged("grh_Join")
            End If
         End If
         If Not CurrCell.IsSelected Or ((Not bFirstInGroup Or CurrCell.Column IsNot MachiningDataGrid.Columns(1)) And CurrCell.Column IsNot MachiningDataGrid.Columns(4)) Or SelectedRow.GroupId = 0 Then
            If Not IsNothing(m_EditCell) AndAlso m_EditCell.IsEditing Then
               m_EditCell.IsEditing = False
            Else
               m_MTableDbVM.LeftSelect(SelectedRow)
            End If
         End If
      End If
      If Not bSelCell And Not CurrCell.IsEditing Or CurrCell.Column Is MachiningDataGrid.Columns(4) Then
         If Not IsNothing(m_EditCell) Then m_EditCell.IsEditing = False
         Keyboard.ClearFocus()
         MachiningDataGrid.Focus()
         e.Handled = True
      End If
   End Sub

   Private Sub CellRightClick(sender As Object, e As MouseButtonEventArgs)
      Dim CurrCell As DataGridCell = Nothing
      If TypeOf sender Is DataGridCell Then
         CurrCell = DirectCast(sender, DataGridCell)
      End If
      If Not IsNothing(CurrCell) AndAlso TypeOf CurrCell.DataContext Is MTableMachiningGridBoxItem Then
         Dim SelectedRow As MTableMachiningGridBoxItem = DirectCast(CurrCell.DataContext, MTableMachiningGridBoxItem)
         m_MTableDbVM.RightSelect(SelectedRow)
      End If
      If Not IsNothing(m_EditCell) Then m_EditCell.IsEditing = False
      CurrCell.IsEditing = False
      Keyboard.ClearFocus()
      MachiningDataGrid.Focus()
      e.Handled = True
   End Sub

   Private Sub RowMouseUp(sender As Object, e As MouseButtonEventArgs)
      'e.Handled = True
   End Sub

   Private Sub CellRightUp(sender As Object, e As MouseButtonEventArgs)
      e.Handled = True
   End Sub

   Private Sub CellMouseUp(sender As Object, e As MouseButtonEventArgs)
      'e.Handled = True
   End Sub

   Private Sub TabControl_SelectionChanged()

   End Sub

   Public Function GetCell(row As Integer, column As Integer) As DataGridCell
      Dim rowContainer As DataGridRow = GetRow(row)

      If rowContainer IsNot Nothing Then
         Dim presenter As DataGridCellsPresenter = FindChild(Of DataGridCellsPresenter)(rowContainer)

         ' try to get the cell but it may possibly be virtualized
         Dim cell As DataGridCell = DirectCast(presenter.ItemContainerGenerator.ContainerFromIndex(column), DataGridCell)
         If cell Is Nothing Then
            ' now try to bring into view and retreive the cell
            MachiningDataGrid.ScrollIntoView(rowContainer, MachiningDataGrid.Columns(column))
            cell = DirectCast(presenter.ItemContainerGenerator.ContainerFromIndex(column), DataGridCell)
         End If
         Return cell
      End If
      Return Nothing
   End Function

   Public Function GetRow(index As Integer) As DataGridRow
      Dim row As DataGridRow = DirectCast(MachiningDataGrid.ItemContainerGenerator.ContainerFromIndex(index), DataGridRow)
      If row Is Nothing Then
         ' may be virtualized, bring into view and try again
         MachiningDataGrid.ScrollIntoView(MachiningDataGrid.Items(index))
         row = DirectCast(MachiningDataGrid.ItemContainerGenerator.ContainerFromIndex(index), DataGridRow)
      End If
      Return row
   End Function

   Public Function FindChild(Of T As Class)(dependencyObject As DependencyObject) As T
      Dim target As DependencyObject = dependencyObject
      Do
         target = DirectCast(VisualTreeHelper.GetChild(target, 0), DependencyObject)
      Loop While target IsNot Nothing AndAlso Not (TypeOf target Is T)
      Return TryCast(target, T)
   End Function

   Private Sub CsvWindowV_Loaded(sender As Object, e As RoutedEventArgs) Handles Me.Loaded
      ' Carico e imposto posizione finestra
      WinPosFromIniToWindow(S_DOORS, K_MTABLEWINPLACE, Me)
   End Sub

   Private Sub CsvWindowV_Unloaded(sender As Object, e As System.ComponentModel.CancelEventArgs) Handles Me.Closing
      ' Salvo posizione finestra
      WinPosFromWindowToIni(Me, S_DOORS, K_MTABLEWINPLACE)
   End Sub

End Class