public static void MakeRootDesigner(WorkflowViewElement wve)
{
DesignerView designerView = wve.Context.Services.GetService <DesignerView>();
if (!wve.Equals(designerView.RootDesigner))
{
designerView.MakeRootDesigner(wve.ModelItem);
}
}
public void OnItemsPasted(List <object> itemsToPaste, List <object> metaData, Point pastePoint, WorkflowViewElement pastePointReference)
{
Fx.Assert(this.panel != null, "This code shouldn't be hit if panel is null");
HashSet <Activity> workflowElementsPasted = new HashSet <Activity>();
List <ModelItem> modelItemsToSelect = new List <ModelItem>();
bool shouldStoreCurrentSizeViewState = true;
Fx.Assert(this.ModelItem is IModelTreeItem, "this.ModelItem must implement IModelTreeItem");
using (EditingScope editingScope = ((IModelTreeItem)this.ModelItem).ModelTreeManager.CreateEditingScope(System.Activities.Presentation.SR.CollectionAddEditingScopeDescription))
{
if (metaData != null)
{
List <ModelItem> modelItemsPerMetaData = new List <ModelItem>();
foreach (object designerMetaData in metaData)
{
if (designerMetaData is List <FlowNode> )
{
//This is flowchart metadata.
foreach (FlowNode element in designerMetaData as List <FlowNode> )
{
FlowStep step = element as FlowStep;
if (step != null)
{
workflowElementsPasted.Add(step.Action);
}
if (shouldStoreCurrentSizeViewState)
{
// Pasting may change the size of flowchart; need this to undo the size change.
this.StoreCurrentSizeViewStateWithUndo();
shouldStoreCurrentSizeViewState = false;
}
ModelItem item = this.ModelItem.Properties["Nodes"].Collection.Add(element);
// if the pasted item is a flowswitch but the default target is not in the pasted selection,
// reset the DefaultCaseDisplayName to "Default".
if (GenericFlowSwitchHelper.IsGenericFlowSwitch(item.ItemType) &&
item.Properties["Default"].Value == null)
{
item.Properties[FlowSwitchLabelFeature.DefaultCaseDisplayNamePropertyName].SetValue(FlowSwitchLabelFeature.DefaultCaseDisplayNameDefaultValue);
}
modelItemsPerMetaData.Add(item);
if (item != null)
{
if (item.ItemType.Equals(typeof(FlowStep)))
{
modelItemsToSelect.Add(item.Properties["Action"].Value);
}
else
{
modelItemsToSelect.Add(item);
}
}
}
if (pastePoint.X > 0 && pastePoint.Y > 0)
{
Point panelPoint = this.TranslatePoint(pastePoint, this.panel);
if (pastePointReference != null && !pastePointReference.Equals(this))
{
if (pastePointReference.ModelItem != null && this.modelElement.ContainsKey(pastePointReference.ModelItem))
{
panelPoint = pastePointReference.TranslatePoint(pastePoint, this.panel);
}
}
panelPoint.X = panelPoint.X < 0 ? 0 : panelPoint.X;
panelPoint.Y = panelPoint.Y < 0 ? 0 : panelPoint.Y;
UpdateViewStateOnPastePoint(modelItemsPerMetaData, panelPoint);
}
else
{
UpdateViewStateToAvoidOverlapOnPaste(modelItemsPerMetaData);
}
modelItemsPerMetaData.Clear();
}
}
}
foreach (object itemToPaste in itemsToPaste)
{
Activity workflowElementToPaste = itemToPaste as Activity;
if (workflowElementToPaste != null && !workflowElementsPasted.Contains(workflowElementToPaste))
{
FlowStep flowStep = new FlowStep {
Action = workflowElementToPaste, Next = null
};
if (shouldStoreCurrentSizeViewState)
{
// Pasting may change the size of flowchart; need this to undo the size change.
this.StoreCurrentSizeViewStateWithUndo();
shouldStoreCurrentSizeViewState = false;
}
// When paste a non-flowstep object to flowchart, the existing hintsize of the object
// should be removed, and let flowchart panel to compute the right size.
VirtualizedContainerService.SetHintSize(workflowElementToPaste, null);
ModelItem flowStepItem = this.ModelItem.Properties["Nodes"].Collection.Add(flowStep);
if (flowStepItem != null)
{
modelItemsToSelect.Add(flowStepItem.Properties["Action"].Value);
}
}
}
editingScope.Complete();
}
this.Dispatcher.BeginInvoke(() =>
{
if (modelItemsToSelect.Count > 0 && modelItemsToSelect[0] != null)
{
Keyboard.Focus(modelItemsToSelect[0].View as IInputElement);
}
this.Context.Items.SetValue(new Selection(modelItemsToSelect));
},
DispatcherPriority.ApplicationIdle
);
}