private void LoadPerstistDesignerItems(IDiagramItem wholeDiagramToLoad, IDiagramViewModel diagramViewModel)
{
//load diagram items
foreach (DiagramItemData diagramItemData in wholeDiagramToLoad.DesignerItems)
{
if (diagramItemData.ItemType == typeof(PersistDesignerItem))
{
PersistDesignerItem persistedDesignerItem = databaseAccessService.FetchPersistDesignerItem(diagramItemData.ItemId);
PersistDesignerItemViewModel persistDesignerItemViewModel =
new PersistDesignerItemViewModel(persistedDesignerItem.Id, diagramViewModel, persistedDesignerItem.Left, persistedDesignerItem.Top, persistedDesignerItem.ItemWidth, persistedDesignerItem.ItemHeight, persistedDesignerItem.HostUrl);
diagramViewModel.Items.Add(persistDesignerItemViewModel);
}
if (diagramItemData.ItemType == typeof(SettingsDesignerItem))
{
SettingsDesignerItem settingsDesignerItem = databaseAccessService.FetchSettingsDesignerItem(diagramItemData.ItemId);
SettingsDesignerItemViewModel settingsDesignerItemViewModel =
new SettingsDesignerItemViewModel(settingsDesignerItem.Id, diagramViewModel, settingsDesignerItem.Left, settingsDesignerItem.Top, settingsDesignerItem.ItemWidth, settingsDesignerItem.ItemHeight, settingsDesignerItem.Setting1);
diagramViewModel.Items.Add(settingsDesignerItemViewModel);
}
if (diagramItemData.ItemType == typeof(GroupDesignerItem))
{
GroupDesignerItem groupDesignerItem = databaseAccessService.FetchGroupingDesignerItem(diagramItemData.ItemId);
GroupingDesignerItemViewModel groupingDesignerItemViewModel =
new GroupingDesignerItemViewModel(groupDesignerItem.Id, diagramViewModel, groupDesignerItem.Left, groupDesignerItem.Top, groupDesignerItem.ItemWidth, groupDesignerItem.ItemHeight);
if (groupDesignerItem.DesignerItems != null && groupDesignerItem.DesignerItems.Count > 0)
{
LoadPerstistDesignerItems(groupDesignerItem, groupingDesignerItemViewModel);
}
diagramViewModel.Items.Add(groupingDesignerItemViewModel);
}
}
//load connection items
foreach (int connectionId in wholeDiagramToLoad.ConnectionIds)
{
Connection connection = databaseAccessService.FetchConnection(connectionId);
DesignerItemViewModelBase sourceItem = GetConnectorDataItem(diagramViewModel, connection.SourceId, connection.SourceType);
ConnectorOrientation sourceConnectorOrientation = GetOrientationForConnector(connection.SourceOrientation);
FullyCreatedConnectorInfo sourceConnectorInfo = GetFullConnectorInfo(connection.Id, sourceItem, sourceConnectorOrientation);
DesignerItemViewModelBase sinkItem = GetConnectorDataItem(diagramViewModel, connection.SinkId, connection.SinkType);
ConnectorOrientation sinkConnectorOrientation = GetOrientationForConnector(connection.SinkOrientation);
FullyCreatedConnectorInfo sinkConnectorInfo = GetFullConnectorInfo(connection.Id, sinkItem, sinkConnectorOrientation);
ConnectorViewModel connectionVM = new ConnectorViewModel(connection.Id, diagramViewModel, sourceConnectorInfo, sinkConnectorInfo);
diagramViewModel.Items.Add(connectionVM);
}
}
private void ExecuteGroupCommand(object parameter)
{
if (diagramViewModel.SelectedItems.Count > 0)
{
// if only one selected item is a Grouping item -> ungroup
if (diagramViewModel.SelectedItems[0] is GroupingDesignerItemViewModel && diagramViewModel.SelectedItems.Count == 1)
{
GroupingDesignerItemViewModel groupObject = diagramViewModel.SelectedItems[0] as GroupingDesignerItemViewModel;
foreach (var item in groupObject.Items)
{
if (item is DesignerItemViewModelBase)
{
DesignerItemViewModelBase tmp = (DesignerItemViewModelBase)item;
tmp.Top += groupObject.Top;
tmp.Left += groupObject.Left;
}
diagramViewModel.AddItemCommand.Execute(item);
item.Parent = DiagramViewModel;
}
// "cut" connections between DiagramItems and the Group
List <SelectableDesignerItemViewModelBase> GroupedItemsToRemove = new List <SelectableDesignerItemViewModelBase>();
foreach (var connector in DiagramViewModel.Items.OfType <ConnectorViewModel>())
{
if (groupObject == connector.SourceConnectorInfo.DataItem)
{
GroupedItemsToRemove.Add(connector);
}
if (groupObject == ((FullyCreatedConnectorInfo)connector.SinkConnectorInfo).DataItem)
{
GroupedItemsToRemove.Add(connector);
}
}
GroupedItemsToRemove.Add(groupObject);
foreach (var selectedItem in GroupedItemsToRemove)
{
DiagramViewModel.RemoveItemCommand.Execute(selectedItem);
}
}
else if (diagramViewModel.SelectedItems.Count > 1)
{
double margin = 15;
Rect rekt = PointHelper.GetBoundingRectangle(diagramViewModel.SelectedItems, margin);
GroupingDesignerItemViewModel groupItem = new GroupingDesignerItemViewModel(0, this.diagramViewModel, rekt.Left, rekt.Top);
groupItem.ItemWidth = rekt.Width;
groupItem.ItemHeight = rekt.Height;
foreach (var item in diagramViewModel.SelectedItems)
{
if (item is DesignerItemViewModelBase)
{
DesignerItemViewModelBase tmp = (DesignerItemViewModelBase)item;
tmp.Top -= rekt.Top;
tmp.Left -= rekt.Left;
}
groupItem.Items.Add(item);
item.Parent = groupItem;
}
// "cut" connections between DiagramItems which are going to be grouped and
// Diagramitems which are not going to be grouped
List <SelectableDesignerItemViewModelBase> GroupedItemsToRemove = DiagramViewModel.SelectedItems;
List <SelectableDesignerItemViewModelBase> connectionsToAlsoRemove = new List <SelectableDesignerItemViewModelBase>();
foreach (var connector in DiagramViewModel.Items.OfType <ConnectorViewModel>())
{
if (ItemsToDeleteHasConnector(GroupedItemsToRemove, connector.SourceConnectorInfo))
{
connectionsToAlsoRemove.Add(connector);
}
if (ItemsToDeleteHasConnector(GroupedItemsToRemove, (FullyCreatedConnectorInfo)connector.SinkConnectorInfo))
{
connectionsToAlsoRemove.Add(connector);
}
}
GroupedItemsToRemove.AddRange(connectionsToAlsoRemove);
foreach (var selectedItem in GroupedItemsToRemove)
{
DiagramViewModel.RemoveItemCommand.Execute(selectedItem);
}
diagramViewModel.SelectedItems.Clear();
this.diagramViewModel.Items.Add(groupItem);
}
}
}