private void DeleteFromDatabase(DiagramItem wholeDiagramToAdjust, SelectableDesignerItemViewModelBase itemToDelete)
{
if (itemToDelete is BatteryViewModel)
{
DiagramItemData diagramItemToRemoveFromParent = wholeDiagramToAdjust.DesignerItems.Single(x => x.ItemId == itemToDelete.Id && x.ItemType == typeof(BatteryDesignerItem));
wholeDiagramToAdjust.DesignerItems.Remove(diagramItemToRemoveFromParent);
_databaseAccessService.DeleteDesignerItem<BatteryDesignerItem>(itemToDelete.Id);
}
if (itemToDelete is ResistorViewModel)
{
DiagramItemData diagramItemToRemoveFromParent = wholeDiagramToAdjust.DesignerItems.Single(x => x.ItemId == itemToDelete.Id && x.ItemType == typeof(ResistorDesignerItem));
wholeDiagramToAdjust.DesignerItems.Remove(diagramItemToRemoveFromParent);
_databaseAccessService.DeleteDesignerItem<ResistorDesignerItem>(itemToDelete.Id);
}
if (itemToDelete is LightBulbViewModel)
{
DiagramItemData diagramItemToRemoveFromParent = wholeDiagramToAdjust.DesignerItems.Single(x => x.ItemId == itemToDelete.Id && x.ItemType == typeof(LightBulbDesignerItem));
wholeDiagramToAdjust.DesignerItems.Remove(diagramItemToRemoveFromParent);
_databaseAccessService.DeleteDesignerItem<LightBulbDesignerItem>(itemToDelete.Id);
}
if (itemToDelete is SwitchViewModel)
{
DiagramItemData diagramItemToRemoveFromParent = wholeDiagramToAdjust.DesignerItems.Single(x => x.ItemId == itemToDelete.Id && x.ItemType == typeof(SwitchDesignerItem));
wholeDiagramToAdjust.DesignerItems.Remove(diagramItemToRemoveFromParent);
_databaseAccessService.DeleteDesignerItem<SwitchDesignerItem>(itemToDelete.Id);
}
if (itemToDelete is VoltmeterViewModel)
{
DiagramItemData diagramItemToRemoveFromParent = wholeDiagramToAdjust.DesignerItems.Single(x => x.ItemId == itemToDelete.Id && x.ItemType == typeof(VoltmeterDesignerItem));
wholeDiagramToAdjust.DesignerItems.Remove(diagramItemToRemoveFromParent);
_databaseAccessService.DeleteDesignerItem<VoltmeterDesignerItem>(itemToDelete.Id);
}
if (itemToDelete is AmmeterViewModel)
{
DiagramItemData diagramItemToRemoveFromParent = wholeDiagramToAdjust.DesignerItems.Single(x => x.ItemId == itemToDelete.Id && x.ItemType == typeof(AmmeterDesignerItem));
wholeDiagramToAdjust.DesignerItems.Remove(diagramItemToRemoveFromParent);
_databaseAccessService.DeleteDesignerItem<AmmeterDesignerItem>(itemToDelete.Id);
}
if (itemToDelete is ConnectorViewModel)
{
wholeDiagramToAdjust.ConnectionIds.Remove(itemToDelete.Id);
_databaseAccessService.DeleteConnection(itemToDelete.Id);
}
_databaseAccessService.SaveDiagram(wholeDiagramToAdjust);
}
private void ExecuteSaveDiagramCommand(object parameter)
{
if (!DiagramViewModel.Items.Any())
{
MessageBox.Show("There is nothing to save!", "Error", MessageBoxButton.OK, MessageBoxImage.Error);
return;
}
IsBusy = true;
DiagramItem wholeDiagramToSave;
Task<int> task = Task.Factory.StartNew(() =>
{
if (SavedDiagramId != null)
{
int currentSavedDiagramId = SavedDiagramId.Value;
wholeDiagramToSave = _databaseAccessService.FetchDiagram(currentSavedDiagramId);
//Clear all removed items that the user deleted as part of this work sesssion
foreach (var itemToRemove in _itemsToRemove)
{
DeleteFromDatabase(wholeDiagramToSave, itemToRemove);
}
// Start with empty collections of connections and items, which will be populated based on current diagram
wholeDiagramToSave.ConnectionIds = new List<int>();
wholeDiagramToSave.DesignerItems = new List<DiagramItemData>();
}
else
{
wholeDiagramToSave = new DiagramItem();
}
// Ensure that itemsToRemove is cleared ready for any new changes within a session
_itemsToRemove = new List<SelectableDesignerItemViewModelBase>();
foreach (var model in DiagramViewModel.Items.OfType<BatteryViewModel>())
{
BatteryDesignerItem item = new BatteryDesignerItem(model.Id, model.Left, model.Top, model.Component.VoltageSource);
model.Id = _databaseAccessService.SaveDesignerItem(item);
wholeDiagramToSave.DesignerItems.Add(new DiagramItemData(item.Id, typeof(BatteryDesignerItem)));
}
foreach (var model in DiagramViewModel.Items.OfType<ResistorViewModel>())
{
ResistorDesignerItem item = new ResistorDesignerItem(model.Id, model.Left, model.Top, model.Component.Resistance);
model.Id = _databaseAccessService.SaveDesignerItem(item);
wholeDiagramToSave.DesignerItems.Add(new DiagramItemData(item.Id, typeof(ResistorDesignerItem)));
}
foreach (var model in DiagramViewModel.Items.OfType<LightBulbViewModel>())
{
LightBulbDesignerItem item = new LightBulbDesignerItem(model.Id, model.Left, model.Top, model.Component.Resistance);
model.Id = _databaseAccessService.SaveDesignerItem(item);
wholeDiagramToSave.DesignerItems.Add(new DiagramItemData(item.Id, typeof(LightBulbDesignerItem)));
}
foreach (var model in DiagramViewModel.Items.OfType<SwitchViewModel>())
{
bool isOn = model.Component.Resistance < 1;
SwitchDesignerItem item = new SwitchDesignerItem(model.Id, model.Left, model.Top, isOn);
model.Id = _databaseAccessService.SaveDesignerItem(item);
wholeDiagramToSave.DesignerItems.Add(new DiagramItemData(item.Id, typeof(SwitchDesignerItem)));
}
foreach (var model in DiagramViewModel.Items.OfType<VoltmeterViewModel>())
{
VoltmeterDesignerItem item = new VoltmeterDesignerItem(model.Id, model.Left, model.Top);
model.Id = _databaseAccessService.SaveDesignerItem(item);
wholeDiagramToSave.DesignerItems.Add(new DiagramItemData(item.Id, typeof(VoltmeterDesignerItem)));
}
foreach (var model in DiagramViewModel.Items.OfType<AmmeterViewModel>())
{
AmmeterDesignerItem item = new AmmeterDesignerItem(model.Id, model.Left, model.Top);
model.Id = _databaseAccessService.SaveDesignerItem(item);
wholeDiagramToSave.DesignerItems.Add(new DiagramItemData(item.Id, typeof(AmmeterDesignerItem)));
}
//Save all connections which should now have their Connection.DataItems filled in with correct Ids
foreach (var model in DiagramViewModel.Items.OfType<ConnectorViewModel>())
{
FullyCreatedConnectorInfo sinkConnector = model.SinkConnectorInfo as FullyCreatedConnectorInfo;
Connection connection = new Connection(
model.Id,
model.SourceConnectorInfo.DataItem.Id,
GetOrientationFromConnector(model.SourceConnectorInfo.Orientation),
GetTypeOfDiagramItem(model.SourceConnectorInfo.DataItem),
sinkConnector.DataItem.Id,
GetOrientationFromConnector(sinkConnector.Orientation),
GetTypeOfDiagramItem(sinkConnector.DataItem));
model.Id = _databaseAccessService.SaveConnection(connection);
wholeDiagramToSave.ConnectionIds.Add(model.Id);
}
wholeDiagramToSave.Id = _databaseAccessService.SaveDiagram(wholeDiagramToSave);
return wholeDiagramToSave.Id;
});
task.ContinueWith(ant =>
{
int wholeDiagramToSaveId = ant.Result;
if (!_savedDiagrams.Contains(wholeDiagramToSaveId))
{
List<int> newDiagrams = new List<int>(_savedDiagrams) {wholeDiagramToSaveId};
SavedDiagrams = newDiagrams;
}
IsBusy = false;
MessageBox.Show("Circuit \"" + wholeDiagramToSaveId + "\" saved successfully.", "Save", MessageBoxButton.OK, MessageBoxImage.Information);
}, TaskContinuationOptions.OnlyOnRanToCompletion);
}
