/// <summary>
/// Generates script when going to Script tab, and prevents returning to Transform tab without a confirmation to lose changes.
/// </summary>
private void Items_CurrentChanging(object sender, CurrentChangingEventArgs e)
{
if (string.IsNullOrEmpty(encodeSettings.FilePath))
{
return;
}
SettingsTab.Focus();
var item = ((ICollectionView)sender).CurrentItem;
bool Cancel = false;
// Generate script when going to Script tab.
if (SettingsTab.SelectedIndex == 2 && string.IsNullOrEmpty(encodeSettings.CustomScript))
{
if (Validate())
{
business.GenerateCustomScript(encodeSettings);
}
else
{
Cancel = true;
}
}
else if (SettingsTab.SelectedIndex == 0 && !string.IsNullOrEmpty(encodeSettings.CustomScript))
{
// Ask for confirmation before going back to Transform tab and losing changes.
if (business.CustomScriptHasChanges(encodeSettings))
{
if (MessageBox.Show("You will lose any changes to your script. Are you sure?", "Confirmation", MessageBoxButton.YesNo, MessageBoxImage.Exclamation) == MessageBoxResult.No)
{
Cancel = true;
}
}
if (!Cancel)
{
encodeSettings.CustomScript = null;
}
}
// Revert to previously-selected tab.
if (Cancel)
{
e.Cancel = true;
SettingsTab.SelectedItem = item;
}
}
