public virtual void Initialize(Engine.Workflow w)
{
t_workflow = w;
t_attributeCollection = new Attributes.AttributeCollection();
t_imageSource = t_workflow.Canvas;
// clear the drawing surface of all work layers created by previous tools or effects
t_workflow.SelectionGlassRequest(SelectionGlassRequestType.Delete);
}
/// <summary>
/// Removes all controls from the FlowPanelContainer
/// </summary>
private void Clear()
{
// explicitly removes children controls and set them to null
while (FlowPanelContainer.Children.Count > 0)
{
UIElement uie = FlowPanelContainer.Children[0];
FlowPanelContainer.Children.Remove(uie);
uie = null;
}
t_properties = null;
}
/// <summary>
///
/// </summary>
/// <param name="w"></param>
/// <remarks>Called by the VisualPropertyPageManager</remarks>
internal void Build(Engine.Workflow w)
{
Clear();
t_workflow = w;
if (w.GraphicActivity == null)
{
return;
}
Engine.Tools.IGraphicActivity activity = w.GraphicActivity;
Engine.Effects.VisualProperties vp = activity.GetVisualProperties();
// this can happen for tools or effects that have no visual properties
if (vp == null)
{
return;
}
if (vp.Count == 0)
{
// ensure no properties are left from a previous workflow-document
t_properties = null;
t_canAutoApply = false;
return;
}
t_properties = new Engine.Attributes.AttributeCollection();
Dictionary <string, Engine.Effects.VisualPropertyItem> items = vp.GetItems();
foreach (KeyValuePair <string, Engine.Effects.VisualPropertyItem> key in items)
{
BuildControl(key);
}
t_canAutoApply = true;
}