private async void Window_Closing(object sender, System.ComponentModel.CancelEventArgs e)
{
if (m_ShouldClose == null)
{
// mark comment to m_ShouldClose
e.Cancel = true;
// is here unsaved documents?
bool bUnsaved = false;
foreach (Document doc in m_VM.DocManager.OpenDocuments)
{
if (doc.ChangesCount > 0)
{
bUnsaved = true;
break;
}
}
//
if (bUnsaved)
{
SaveChangesDialog_ViewModel vm = new SaveChangesDialog_ViewModel();
vm.Text = "There are unsaved documents. Some data will be lost possibly.";
vm.IsSaveButtonVisible = false;
SaveChangesDialog saveChangesDialog = new SaveChangesDialog(vm);
//show the dialog
// true - save
// false - cancel
// null - continue
var result = await DialogHost.Show(saveChangesDialog);
if (result is bool && !(bool)result)
{
return;
}
}
m_ShouldClose = true;
Application.Current.Shutdown();
}
}
//=============================================================================
private async void CloseDocumentButton_Click(object sender, RoutedEventArgs e)
{
Button btn = sender as Button;
if (btn == null)
{
return;
}
ListBoxItem lbi = Utils.TryFindParent <ListBoxItem>(btn);
if (lbi == null)
{
return;
}
Document docToClose = lbi.DataContext as Document;
if (docToClose == null)
{
return;
}
if (docToClose.ChangesCount > 0)
{
StringBuilder sb = new StringBuilder();
sb.Append("Document \"");
sb.Append(docToClose.DisplayName);
sb.Append("\" has changes. Do you want to save changes?");
SaveChangesDialog_ViewModel vm = new SaveChangesDialog_ViewModel();
vm.Text = sb.ToString();
SaveChangesDialog saveChangesDialog = new SaveChangesDialog(vm);
//show the dialog
// true - save
// false - cancel
// null - continue
var result = await DialogHost.Show(saveChangesDialog);
if (result is bool)
{
bool bRes = (bool)result;
// cancel - dont close document
if (!bRes)
{
return;
}
// save doc
if (docToClose.IsItNewDocument)
{
string strFilePath = _GetPath();
if (string.IsNullOrEmpty(strFilePath))
{
return;
}
docToClose.Save(strFilePath);
}
else
{
docToClose.Save();
}
}
}
// select document
int iOldIndex = m_VM.DocManager.OpenDocuments.IndexOf(docToClose);
m_VM.DocManager.OpenDocuments.Remove(docToClose);
if (m_VM.DocManager.OpenDocuments.Count > 0)
{
if (iOldIndex >= m_VM.DocManager.OpenDocuments.Count)
{
iOldIndex = m_VM.DocManager.OpenDocuments.Count - 1;
}
Document docToSelect = m_VM.DocManager.OpenDocuments[iOldIndex];
if (docToSelect != null)
{
docToSelect.IsSelected = true;
}
}
}