Dario Sassi
115 lines
4.0 KiB
VB.net
115 lines
4.0 KiB
VB.net
'----------------------------------------------------------------------------
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' EgalTech 2015-2015
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'----------------------------------------------------------------------------
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' File : MruList.vb Data : 27.02.15 Versione : 1.6b7
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' Contenuto : Classe MruList (gestione elenco file appena usati).
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'
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'
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'
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' Modifiche : 27.02.15 DS Creazione modulo.
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'
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'
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'----------------------------------------------------------------------------
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'--------------------------------------------------------------------------------------------------
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Imports System.Collections.ObjectModel
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Public Class MruList
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'---------------------------------------------------------------------------
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Private m_sSection As String
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Private m_nMaxEntries As Integer
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Friend m_FileNames As ObservableCollection(Of String)
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'---------------------------------------------------------------------------
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Public Sub New(sSection As String, nMaxEntries As Integer)
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' Inizializzo
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m_sSection = sSection
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m_nMaxEntries = nMaxEntries
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m_FileNames = New ObservableCollection(Of String)
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' Carico lista da Ini.
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LoadMruList()
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End Sub
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'---------------------------------------------------------------------------
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Private Sub LoadMruList()
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' Pulisco la lista dei file
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m_FileNames.Clear()
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' Carico la lista dei file salvati in INI
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Dim sFileName As String = String.Empty
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For i As Integer = 1 To m_nMaxEntries
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Dim sKey As String = K_FILE + i.ToString()
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If GetPrivateProfileString(m_sSection, sKey, "", sFileName) > 0 Then
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m_FileNames.Add(sFileName)
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End If
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Next
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End Sub
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'---------------------------------------------------------------------------
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Private Sub SaveMruList()
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For i As Integer = 1 To m_nMaxEntries
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Dim sKey As String = K_FILE + i.ToString()
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If i <= m_FileNames.Count Then
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WritePrivateProfileString(m_sSection, sKey, m_FileNames(i - 1).ToString)
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Else
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WritePrivateProfileString(m_sSection, sKey, "")
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End If
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Next
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End Sub
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'---------------------------------------------------------------------------
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Public Sub Add(ByVal sFileName As String)
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' Se già presente, rimuovo il file dalla lista
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Dim i As Integer = FileNameIndex(sFileName)
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If i > 0 Then
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m_FileNames.Remove(i)
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End If
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' Aggiungo il file in cima alla lista
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If m_FileNames.Count > 0 Then
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m_FileNames.Insert(0, sFileName)
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Else
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m_FileNames.Add(sFileName)
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End If
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' Se la lista ha superato la massima dimensione, cancello l'ultimo record
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If m_FileNames.Count > m_nMaxEntries Then
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m_FileNames.RemoveAt(m_nMaxEntries + 1)
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End If
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' Salvo la lista aggiornata
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SaveMruList()
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End Sub
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'---------------------------------------------------------------------------
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Private Function FileNameIndex(ByVal sFileName As String) As Integer
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For i As Integer = 1 To m_FileNames.Count
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If String.Compare(m_FileNames(i - 1).ToString, sFileName, True) = 0 Then
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Return i
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End If
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Next
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Return 0
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End Function
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'---------------------------------------------------------------------------
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Public Sub Remove(ByVal sFileName As String)
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Dim i As Integer = FileNameIndex(sFileName)
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If i > 0 Then
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' Rimuovo il file
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m_FileNames.RemoveAt(i)
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' Salvo lalista aggiornata
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SaveMruList()
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End If
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End Sub
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'---------------------------------------------------------------------------
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Public Function GetFileName(ByVal nInd As Integer, ByRef sFileName As String) As Boolean
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If nInd > 0 And nInd <= m_FileNames.Count() Then
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sFileName = m_FileNames(nInd).ToString()
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Return True
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Else
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sFileName = String.Empty
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Return False
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End If
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End Function
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End Class
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