/// <summary>
/// Begin a drag / drop operation
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void ActivitiesList_MouseMove(
object sender, MouseEventArgs e)
{
if (e.Button == MouseButtons.Left)
{
if (_activitiesList.SelectedItem is ActivityToolboxItem)
{
ActivityToolboxItem selectedItem =
_activitiesList.SelectedItem
as ActivityToolboxItem;
IDataObject dataObject = SerializeToolboxItem(
selectedItem) as IDataObject;
DoDragDrop(dataObject, DragDropEffects.All);
}
}
}
/// <summary>
/// Perform owner drawing of the toolbox items
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void ActivitiesList_DrawItem(
object sender, DrawItemEventArgs e)
{
if (e.Index < 0)
{
return;
}
ActivityToolboxItem item
= ((ListBox)sender).Items[e.Index] as ActivityToolboxItem;
if (item != null)
{
Graphics graphics = e.Graphics;
if ((e.State & DrawItemState.Selected)
== DrawItemState.Selected)
{
//draw a border around the selected item
graphics.FillRectangle(
SystemBrushes.Window, e.Bounds);
Rectangle rect = e.Bounds;
rect.Width -= 2;
rect.Height -= 2;
graphics.DrawRectangle(SystemPens.ActiveBorder, rect);
}
else
{
//not the selected item, just fill the rect
graphics.FillRectangle(SystemBrushes.Window, e.Bounds);
}
//draw the toolbox item image
Int32 bitmapWidth = 0;
if (item.Bitmap != null)
{
graphics.DrawImage(item.Bitmap,
e.Bounds.X + 2, e.Bounds.Y + 2,
item.Bitmap.Width, item.Bitmap.Height);
bitmapWidth = item.Bitmap.Width;
}
//add the display name
graphics.DrawString(item.DisplayName,
e.Font, SystemBrushes.ControlText,
e.Bounds.X + bitmapWidth + 2, e.Bounds.Y + 2);
}
}
public static Activity[] DeserializeActivitiesFromDataObject(IServiceProvider serviceProvider, IDataObject dataObj, bool addReference)
{
IDesignerHost designerHost = (IDesignerHost)serviceProvider.GetService(typeof(IDesignerHost));
if (designerHost == null)
{
throw new InvalidOperationException("IDesignerHost is missing.");
}
if (dataObj == null)
{
return new Activity[] { }
}
;
object data = dataObj.GetData(CF_DESIGNER);
ICollection activities = null;
if (data is Stream)
{
BinaryFormatter formatter = new BinaryFormatter();
((Stream)data).Seek(0, SeekOrigin.Begin);
object serializationData = formatter.Deserialize((Stream)data);
if (serializationData is SerializationStore)
{
// get component serialization service
ComponentSerializationService css = serviceProvider.GetService(typeof(ComponentSerializationService)) as ComponentSerializationService;
if (css == null)
{
throw new Exception("ComponentSerializationService is missing.");
}
// deserialize data
activities = css.Deserialize((SerializationStore)serializationData);
}
}
else
{
// Now check for a toolbox item.
IToolboxService ts = (IToolboxService)serviceProvider.GetService(typeof(IToolboxService));
if (ts != null && ts.IsSupported(dataObj, designerHost))
{
ToolboxItem toolBoxItem = ts.DeserializeToolboxItem(dataObj, designerHost);
if (toolBoxItem != null)
{
// this will make sure that we add the assembly reference to project
if (addReference && toolBoxItem.AssemblyName != null)
{
ITypeResolutionService trs = serviceProvider.GetService(typeof(ITypeResolutionService)) as ITypeResolutionService;
if (trs != null)
{
trs.ReferenceAssembly(toolBoxItem.AssemblyName);
}
}
ActivityToolboxItem ActivityToolboxItem = toolBoxItem as ActivityToolboxItem;
if (addReference && ActivityToolboxItem != null)
{
activities = ActivityToolboxItem.CreateComponentsWithUI(designerHost);
}
else
{
activities = toolBoxItem.CreateComponents(designerHost);
}
}
}
}
return((activities != null) ? (Activity[])(new ArrayList(activities).ToArray(typeof(Activity))) : new Activity[] { });
}