private void InitiateDragDrop()
{
WorkflowView parentView = ParentView;
ISelectionService selectionService = (ISelectionService)GetService(typeof(ISelectionService));
IDesignerHost designerHost = (IDesignerHost)GetService(typeof(IDesignerHost));
if (selectionService == null || designerHost == null)
{
return;
}
// check if we are cutting root component
ICollection components = selectionService.GetSelectedComponents();
if (components == null || components.Count < 1 || selectionService.GetComponentSelected(designerHost.RootComponent) || !Helpers.AreAllActivities(components))
{
return;
}
DragDropEffects effects = DragDropEffects.None;
try
{
// get component serialization service
this.existingDraggedActivities.AddRange(Helpers.GetTopLevelActivities(components));
//IMPORTANT: FOR WITHIN DESIGNER COMPONENT MOVE WE REMOVE THE ACTIVITIES BEFORE WE ADD THEM WHICH IS IN
//ONDRAGDROP FUNCTION. ALTHOUGH THIS VIOLATES THE DODRAGDROP FUNCTION SIMANTICS, WE NEED TO DO THIS
//SO THAT WE CAN USE THE SAME IDS FOR THE ACTIVITIES
DragDropEffects allowedEffects = (DesignerHelpers.AreAssociatedDesignersMovable(this.existingDraggedActivities)) ? DragDropEffects.Move | DragDropEffects.Copy : DragDropEffects.Copy;
IDataObject dataObject = CompositeActivityDesigner.SerializeActivitiesToDataObject(ParentView, this.existingDraggedActivities.ToArray());
effects = parentView.DoDragDrop(dataObject, allowedEffects);
//
}
catch (Exception e)
{
DesignerHelpers.ShowError(ParentView, e.Message);
}
finally
{
//This means drag drop occurred across designer
if (effects == DragDropEffects.Move && this.existingDraggedActivities.Count > 0)
{
string transactionDescription = String.Empty;
if (this.existingDraggedActivities.Count > 1)
{
transactionDescription = SR.GetString(SR.MoveMultipleActivities, this.existingDraggedActivities.Count);
}
else
{
transactionDescription = SR.GetString(SR.MoveSingleActivity, this.existingDraggedActivities[0].GetType());
}
CompositeActivityDesigner.RemoveActivities(ParentView, this.existingDraggedActivities.AsReadOnly(), transactionDescription);
}
this.existingDraggedActivities.Clear();
}
}
private void InitiateDragDrop()
{
WorkflowView parentView = base.ParentView;
ISelectionService service = (ISelectionService)base.GetService(typeof(ISelectionService));
IDesignerHost host = (IDesignerHost)base.GetService(typeof(IDesignerHost));
if ((service != null) && (host != null))
{
ICollection selectedComponents = service.GetSelectedComponents();
if (((selectedComponents != null) && (selectedComponents.Count >= 1)) && (!service.GetComponentSelected(host.RootComponent) && Helpers.AreAllActivities(selectedComponents)))
{
DragDropEffects none = DragDropEffects.None;
try
{
this.existingDraggedActivities.AddRange(Helpers.GetTopLevelActivities(selectedComponents));
DragDropEffects allowedEffects = DesignerHelpers.AreAssociatedDesignersMovable(this.existingDraggedActivities) ? (DragDropEffects.Move | DragDropEffects.Copy) : DragDropEffects.Copy;
IDataObject data = CompositeActivityDesigner.SerializeActivitiesToDataObject(base.ParentView, this.existingDraggedActivities.ToArray());
none = parentView.DoDragDrop(data, allowedEffects);
}
catch (Exception exception)
{
DesignerHelpers.ShowError(base.ParentView, exception.Message);
}
finally
{
if ((none == DragDropEffects.Move) && (this.existingDraggedActivities.Count > 0))
{
string transactionDescription = string.Empty;
if (this.existingDraggedActivities.Count > 1)
{
transactionDescription = SR.GetString("MoveMultipleActivities", new object[] { this.existingDraggedActivities.Count });
}
else
{
transactionDescription = SR.GetString("MoveSingleActivity", new object[] { this.existingDraggedActivities[0].GetType() });
}
CompositeActivityDesigner.RemoveActivities(base.ParentView, this.existingDraggedActivities.AsReadOnly(), transactionDescription);
}
this.existingDraggedActivities.Clear();
}
}
}
}
protected override bool OnKeyDown(KeyEventArgs eventArgs)
{
if (eventArgs != null && (eventArgs.KeyCode == Keys.PageUp || eventArgs.KeyCode == Keys.PageDown))
{
UpdateViewOnPageUpDown(eventArgs.KeyCode == Keys.PageUp);
}
ISelectionService selectionService = ((IServiceProvider)this.ParentView).GetService(typeof(ISelectionService)) as ISelectionService;
//enter key (
if (eventArgs.KeyCode == Keys.Enter)
{
// on enter key we want to do DoDefault of the designer
IDesigner designer = ActivityDesigner.GetDesigner(selectionService.PrimarySelection as Activity) as IDesigner;
if (designer != null)
{
designer.DoDefaultAction();
eventArgs.Handled = true;
}
}
else if (eventArgs.KeyCode == Keys.Escape)
{
if (!eventArgs.Handled)
{
CompositeActivityDesigner parentDesigner = ActivityDesigner.GetParentDesigner(selectionService.PrimarySelection);
if (parentDesigner != null)
{
selectionService.SetSelectedComponents(new object[] { parentDesigner.Activity }, SelectionTypes.Replace);
}
eventArgs.Handled = true;
}
}
else if (eventArgs.KeyCode == Keys.Delete)
{
// check if we are cutting root component
IDesignerHost designerHost = ((IServiceProvider)this.ParentView).GetService(typeof(IDesignerHost)) as IDesignerHost;
if (!(designerHost == null || selectionService.GetComponentSelected(designerHost.RootComponent)))
{
//Check that we are cutting all activities
//Check if we are in writable context
ICollection components = selectionService.GetSelectedComponents();
if (DesignerHelpers.AreComponentsRemovable(components))
{
// check if we can delete these
List <Activity> topLevelActivities = new List <Activity>(Helpers.GetTopLevelActivities(selectionService.GetSelectedComponents()));
bool needToDelete = (topLevelActivities.Count > 0);
IDictionary commonParentActivities = Helpers.PairUpCommonParentActivities(topLevelActivities);
foreach (DictionaryEntry entry in commonParentActivities)
{
CompositeActivityDesigner compositeActivityDesigner = ActivityDesigner.GetDesigner(entry.Key as Activity) as CompositeActivityDesigner;
if (compositeActivityDesigner != null && !compositeActivityDesigner.CanRemoveActivities(new List <Activity>((Activity[])((ArrayList)entry.Value).ToArray(typeof(Activity))).AsReadOnly()))
{
needToDelete = false;
}
}
if (needToDelete)
{
List <ConnectorHitTestInfo> connectors = new List <ConnectorHitTestInfo>();
foreach (object component in components)
{
ConnectorHitTestInfo connector = component as ConnectorHitTestInfo;
if (connector != null)
{
connectors.Add(connector);
}
}
//cache selcted connectors before calling this func
CompositeActivityDesigner.RemoveActivities((IServiceProvider)this.ParentView, topLevelActivities.AsReadOnly(), SR.GetString(SR.DeletingActivities));
//add connectors back to the selection service
if (selectionService != null && connectors.Count > 0)
{
selectionService.SetSelectedComponents(connectors, SelectionTypes.Add);
}
eventArgs.Handled = true;
}
}
}
}
//navigation (left, right, up, down, tab, shift-tab)
else if (eventArgs.KeyCode == Keys.Left || eventArgs.KeyCode == Keys.Right || eventArgs.KeyCode == Keys.Up || eventArgs.KeyCode == Keys.Down || eventArgs.KeyCode == Keys.Tab)
{
//we'll pass it to the parent designer of the primary selected designer
//sequential designers just navigate between their children
//free form designers may move their children on arrow keys and navigate on tab
ActivityDesigner designer = ActivityDesigner.GetDesigner(selectionService.PrimarySelection as Activity) as ActivityDesigner;
if (designer != null && designer.ParentDesigner != null)
{
//we will let the parent see if it wants to handle the event,
//otherwise the selected designer itself will be called from a designer message filter below
((IWorkflowDesignerMessageSink)designer.ParentDesigner).OnKeyDown(eventArgs);
eventArgs.Handled = true;
}
}
if (!eventArgs.Handled)
{
ActivityDesigner designerWithFocus = GetDesignerWithFocus();
if (designerWithFocus != null)
{
((IWorkflowDesignerMessageSink)designerWithFocus).OnKeyDown(eventArgs);
}
}
return(eventArgs.Handled);
}
protected override bool OnKeyDown(KeyEventArgs eventArgs)
{
if ((eventArgs != null) && ((eventArgs.KeyCode == Keys.PageUp) || (eventArgs.KeyCode == Keys.Next)))
{
this.UpdateViewOnPageUpDown(eventArgs.KeyCode == Keys.PageUp);
}
ISelectionService service = ((IServiceProvider)base.ParentView).GetService(typeof(ISelectionService)) as ISelectionService;
if (eventArgs.KeyCode == Keys.Enter)
{
IDesigner designer = ActivityDesigner.GetDesigner(service.PrimarySelection as Activity);
if (designer != null)
{
designer.DoDefaultAction();
eventArgs.Handled = true;
}
}
else if (eventArgs.KeyCode == Keys.Escape)
{
if (!eventArgs.Handled)
{
CompositeActivityDesigner parentDesigner = ActivityDesigner.GetParentDesigner(service.PrimarySelection);
if (parentDesigner != null)
{
service.SetSelectedComponents(new object[] { parentDesigner.Activity }, SelectionTypes.Replace);
}
eventArgs.Handled = true;
}
}
else if (eventArgs.KeyCode == Keys.Delete)
{
IDesignerHost host = ((IServiceProvider)base.ParentView).GetService(typeof(IDesignerHost)) as IDesignerHost;
if ((host != null) && !service.GetComponentSelected(host.RootComponent))
{
ICollection selectedComponents = service.GetSelectedComponents();
if (DesignerHelpers.AreComponentsRemovable(selectedComponents))
{
List <Activity> activities = new List <Activity>(Helpers.GetTopLevelActivities(service.GetSelectedComponents()));
bool flag = activities.Count > 0;
foreach (DictionaryEntry entry in Helpers.PairUpCommonParentActivities(activities))
{
CompositeActivityDesigner designer3 = ActivityDesigner.GetDesigner(entry.Key as Activity) as CompositeActivityDesigner;
if ((designer3 != null) && !designer3.CanRemoveActivities(new List <Activity>((Activity[])((ArrayList)entry.Value).ToArray(typeof(Activity))).AsReadOnly()))
{
flag = false;
}
}
if (flag)
{
List <ConnectorHitTestInfo> components = new List <ConnectorHitTestInfo>();
foreach (object obj2 in selectedComponents)
{
ConnectorHitTestInfo item = obj2 as ConnectorHitTestInfo;
if (item != null)
{
components.Add(item);
}
}
CompositeActivityDesigner.RemoveActivities(base.ParentView, activities.AsReadOnly(), SR.GetString("DeletingActivities"));
if ((service != null) && (components.Count > 0))
{
service.SetSelectedComponents(components, SelectionTypes.Add);
}
eventArgs.Handled = true;
}
}
}
}
else if (((eventArgs.KeyCode == Keys.Left) || (eventArgs.KeyCode == Keys.Right)) || (((eventArgs.KeyCode == Keys.Up) || (eventArgs.KeyCode == Keys.Down)) || (eventArgs.KeyCode == Keys.Tab)))
{
ActivityDesigner designer4 = ActivityDesigner.GetDesigner(service.PrimarySelection as Activity);
if ((designer4 != null) && (designer4.ParentDesigner != null))
{
((IWorkflowDesignerMessageSink)designer4.ParentDesigner).OnKeyDown(eventArgs);
eventArgs.Handled = true;
}
}
if (!eventArgs.Handled)
{
ActivityDesigner designerWithFocus = this.GetDesignerWithFocus();
if (designerWithFocus != null)
{
((IWorkflowDesignerMessageSink)designerWithFocus).OnKeyDown(eventArgs);
}
}
return(eventArgs.Handled);
}
public static void SetBaseTypeName(string typeName, IServiceProvider serviceProvider)
{
if (string.IsNullOrEmpty(typeName))
{
throw new ArgumentNullException("typeName");
}
IDesignerHost host = serviceProvider.GetService(typeof(IDesignerHost)) as IDesignerHost;
if (host == null)
{
throw new InvalidOperationException(SR.GetString(SR.General_MissingService, typeof(IDesignerHost).FullName));
}
IMemberCreationService memberCreationService = serviceProvider.GetService(typeof(IMemberCreationService)) as IMemberCreationService;
if (memberCreationService == null)
{
throw new InvalidOperationException(SR.GetString("General_MissingService", typeof(IMemberCreationService).FullName));
}
// Validate the base type (this will throw an exception if the type name isn't valid
Type newBaseType = ValidateBaseType(typeName, serviceProvider);
//Warn the user of the change
Type oldBaseType = host.RootComponent.GetType();
if (oldBaseType == newBaseType)
{
return;
}
// If we're switch to a base type that is not derived from CompositeActivity, make sure
// we dont's support events or exceptions
if (!TypeProvider.IsAssignable(typeof(CompositeActivity), newBaseType))
{
PropertyDescriptor supportsEventsPropDesc = TypeDescriptor.GetProperties(host.RootComponent)["SupportsEvents"];
if (supportsEventsPropDesc != null && ((bool)supportsEventsPropDesc.GetValue(host.RootComponent)) == true)
{
supportsEventsPropDesc.SetValue(host.RootComponent, false);
}
PropertyDescriptor supportsExceptionsPropDesc = TypeDescriptor.GetProperties(host.RootComponent)["SupportsExceptions"];
if (supportsExceptionsPropDesc != null && ((bool)supportsExceptionsPropDesc.GetValue(host.RootComponent)) == true)
{
supportsExceptionsPropDesc.SetValue(host.RootComponent, false);
}
}
PropertyDescriptorCollection properties = TypeDescriptor.GetProperties(host.RootComponent);
if (host.RootComponent is CompositeActivity && ((CompositeActivity)host.RootComponent).Activities.Count > 0)
{
// Warn user first if there are any children that can not be re-parented to the new root.
IUIService uiService = serviceProvider.GetService(typeof(IUIService)) as IUIService;
if (uiService != null)
{
if (DialogResult.OK != uiService.ShowMessage(SR.GetString(SR.NoChildActivities_Message),
SR.GetString(SR.NoChildActivities_Caption), MessageBoxButtons.OKCancel))
{
return;
}
}
// Remove the children first. This would cause the component removed event to be fired,
// thus remove the generated field from the designer.cs file.
List <Activity> activitiesToRemove = new List <Activity>(((CompositeActivity)host.RootComponent).Activities);
CompositeActivityDesigner rootDesigner = host.GetDesigner(host.RootComponent) as CompositeActivityDesigner;
if (rootDesigner != null)
{
rootDesigner.RemoveActivities(activitiesToRemove.AsReadOnly());
}
}
//Also, clear all properties of original base. That will allow undo to set old values back.
foreach (PropertyDescriptor propertyDescriptor in properties)
{
if (!propertyDescriptor.Name.Equals("BaseActivityType", StringComparison.Ordinal) &&
!propertyDescriptor.Name.Equals("Name", StringComparison.Ordinal) &&
propertyDescriptor.CanResetValue(host.RootComponent))
{
propertyDescriptor.ResetValue(host.RootComponent);
}
}
PropertyDescriptor realBaseActivityTypePropertyDescriptor = properties["BaseActivityType"];
PropertyDescriptor baseActivityTypePropertyDescriptor = TypeDescriptor.CreateProperty(realBaseActivityTypePropertyDescriptor.ComponentType, realBaseActivityTypePropertyDescriptor, DesignerSerializationVisibilityAttribute.Visible);
IComponentChangeService changeService = serviceProvider.GetService(typeof(IComponentChangeService)) as IComponentChangeService;
if (changeService != null)
{
changeService.OnComponentChanging(host.RootComponent, baseActivityTypePropertyDescriptor);
}
((Activity)host.RootComponent).UserData[UserDataKeys.NewBaseType] = newBaseType;
memberCreationService.UpdateBaseType(host.RootComponentClassName, newBaseType);
if (changeService != null)
{
changeService.OnComponentChanged(host.RootComponent, baseActivityTypePropertyDescriptor, baseActivityTypePropertyDescriptor.GetValue(host.RootComponent), typeName);
}
//Work around: Force update of the host by raising idle.This is to ensure undo events work on updated host.
Application.RaiseIdle(new EventArgs());
}
public static void SetBaseTypeName(string typeName, IServiceProvider serviceProvider)
{
if (string.IsNullOrEmpty(typeName))
{
throw new ArgumentNullException("typeName");
}
IDesignerHost host = serviceProvider.GetService(typeof(IDesignerHost)) as IDesignerHost;
if (host == null)
{
throw new InvalidOperationException(SR.GetString("General_MissingService", new object[] { typeof(IDesignerHost).FullName }));
}
IMemberCreationService service = serviceProvider.GetService(typeof(IMemberCreationService)) as IMemberCreationService;
if (service == null)
{
throw new InvalidOperationException(SR.GetString("General_MissingService", new object[] { typeof(IMemberCreationService).FullName }));
}
System.Type fromType = ValidateBaseType(typeName, serviceProvider);
if (host.RootComponent.GetType() != fromType)
{
if (!TypeProvider.IsAssignable(typeof(CompositeActivity), fromType))
{
PropertyDescriptor descriptor = TypeDescriptor.GetProperties(host.RootComponent)["SupportsEvents"];
if ((descriptor != null) && ((bool)descriptor.GetValue(host.RootComponent)))
{
descriptor.SetValue(host.RootComponent, false);
}
PropertyDescriptor descriptor2 = TypeDescriptor.GetProperties(host.RootComponent)["SupportsExceptions"];
if ((descriptor2 != null) && ((bool)descriptor2.GetValue(host.RootComponent)))
{
descriptor2.SetValue(host.RootComponent, false);
}
}
PropertyDescriptorCollection properties = TypeDescriptor.GetProperties(host.RootComponent);
if ((host.RootComponent is CompositeActivity) && (((CompositeActivity)host.RootComponent).Activities.Count > 0))
{
IUIService service2 = serviceProvider.GetService(typeof(IUIService)) as IUIService;
if ((service2 != null) && (DialogResult.OK != service2.ShowMessage(SR.GetString("NoChildActivities_Message"), SR.GetString("NoChildActivities_Caption"), MessageBoxButtons.OKCancel)))
{
return;
}
List <Activity> list = new List <Activity>(((CompositeActivity)host.RootComponent).Activities);
CompositeActivityDesigner designer = host.GetDesigner(host.RootComponent) as CompositeActivityDesigner;
if (designer != null)
{
designer.RemoveActivities(list.AsReadOnly());
}
}
foreach (PropertyDescriptor descriptor3 in properties)
{
if ((!descriptor3.Name.Equals("BaseActivityType", StringComparison.Ordinal) && !descriptor3.Name.Equals("Name", StringComparison.Ordinal)) && descriptor3.CanResetValue(host.RootComponent))
{
descriptor3.ResetValue(host.RootComponent);
}
}
PropertyDescriptor oldPropertyDescriptor = properties["BaseActivityType"];
PropertyDescriptor member = TypeDescriptor.CreateProperty(oldPropertyDescriptor.ComponentType, oldPropertyDescriptor, new Attribute[] { DesignerSerializationVisibilityAttribute.Visible });
IComponentChangeService service3 = serviceProvider.GetService(typeof(IComponentChangeService)) as IComponentChangeService;
if (service3 != null)
{
service3.OnComponentChanging(host.RootComponent, member);
}
((Activity)host.RootComponent).UserData[UserDataKeys.NewBaseType] = fromType;
service.UpdateBaseType(host.RootComponentClassName, fromType);
if (service3 != null)
{
service3.OnComponentChanged(host.RootComponent, member, member.GetValue(host.RootComponent), typeName);
}
Application.RaiseIdle(new EventArgs());
}
}