public void RemoveAction(ShapeAction shapeAction)
{
m_ShapeActionFactory.Remove(shapeAction);
m_ShapeActions.Remove(shapeAction);
shapeAction.BecameDirty -= OnBecameDirty;
OnBecameDirty();
}
private void AddShapeAction(ShapeActionFactory.ShapeActionType actionType)
{
ShapeAction shapeAction = m_Stage.AddAction(actionType);
VisualElement visualElement = ShapeActionEditorFactory.GetVisualElement(shapeAction, RemoveShapeAction);
m_ShapeActionsListVisualElement.Add(visualElement);
}
public static VisualElement GetVisualElement(ShapeAction shapeAction,
Action <ShapeAction, VisualElement> deleteAction)
{
VisualElement visualElement = null;
switch (shapeAction)
{
case SetActiveShapeAction setActiveShapeAction:
visualElement = new SetActiveShapeActionEditor(setActiveShapeAction, deleteAction).GetVisualElement();
break;
case SetHighlightShapeAction setHighlightShapeAction:
visualElement = new SetHighlightShapeActionEditor(setHighlightShapeAction, deleteAction).GetVisualElement();
break;
}
if (visualElement == null)
{
return(null);
}
visualElement.AddToClassList("container");
return(visualElement);
}
private void ShapeMouseDownActions(MouseEventArgs e)
{
switch (curShapeAction)
{
case ShapeAction.Nothing:
if (MouseOnShape(e.Location) == false)
{
if (myMenu.DrawShape == true)
{
curShapeAction = ShapeAction.Drawing;
DrawMouseDown(e);
ClearSelectedShape();
}
OnSelectedShapeChanged(Canvas);
}
else
{
curShapeAction = ShapeAction.MovingShape;
selectedShapes = GetSelectedShape(e);
SendMouseAction(selectedShapes, e, MouseAction.Down);
SelectedShape = selectedShapes[0] as LeShape;
OnSelectedShapeChanged(selectedShapes[0]);
}
break;
default:
break;
}
}
static void Main()
{
// Очевидно, что этот код должен работать
ShapeAction <Shape> action = DrawShape;
action(new Rectangle());
/*
* Интуитивно понятно, что любой метод, удовлетворяющий делегату
* ShapeAction<Shape>, должен работать с объектом Rectangle, потому что
* Rectangle является производным от Shape
*
* Всегда есть возможность присвоить менее специфичный метод
* более специфичному делегату, но до появления версии .NET 4
* нельзя было присвоить менее специфичный делегат более специфичному
* делегату. Это очень важное различие.
*
* Теперь это можно, поскольку параметр-тип помечен модификатором "in".
*/
// Следующие действия были возможны до появления .NET 4
ShapeAction <Rectangle> rectAction1 = DrawShape;
rectAction1(new Rectangle());
// А это было невозможно до появления .NET 4
ShapeAction <Rectangle> rectAction2 = action;
rectAction2(new Rectangle());
Console.ReadKey();
}
public ShapeAction AddAction(ShapeActionFactory.ShapeActionType shapeActionType)
{
ShapeAction shapeAction = m_ShapeActionFactory.CreateShapeAction(shapeActionType);
m_ShapeActions.Add(shapeAction);
shapeAction.BecameDirty += OnBecameDirty;
OnBecameDirty();
return(shapeAction);
}
private void ShapeMouseUpActions(MouseEventArgs e)
{
switch (curShapeAction)
{
case ShapeAction.Drawing:
curShapeAction = ShapeAction.Nothing;
AddNewShape(e);
break;
case ShapeAction.MovingShape:
SendMouseAction(selectedShapes, e, MouseAction.Up);
curShapeAction = ShapeAction.Nothing;
break;
}
}
protected override void SetBaseVisualElement(VisualElement visualElement)
{
VisualElement choseShapeField = new ChoseShapeDataField <ShapeData>(
ShapeAction.ShapeDataFactory,
ShapeAction,
"Chose Shape: ",
() => ShapeAction.ShapeData,
shapeData => ShapeAction.SetShapeData(shapeData));
visualElement.Add(choseShapeField);
Toggle setActiveField = new Toggle("Set Active: ")
{
value = ShapeAction.Active
};
setActiveField.RegisterCallback <ChangeEvent <bool> >(evt => ShapeAction.SetIsActive(evt.newValue));
visualElement.Add(setActiveField);
}
protected override void SetBaseVisualElement(VisualElement visualElement)
{
VisualElement choseShapeField = new ChoseShapeDataField <ShapeData>(
ShapeAction.ShapeDataFactory,
ShapeAction,
"Chose Shape: ",
() => ShapeAction.ShapeData,
shapeData => ShapeAction.SetShapeData(shapeData));
visualElement.Add(choseShapeField);
EnumField highlightField = new EnumField("Set Highlight")
{
value = ShapeAction.Highlight
};
highlightField.Init(ShapeAction.Highlight);
highlightField.RegisterCallback <ChangeEvent <Enum> >(evt => ShapeAction.SetHighlightType((HighlightType)evt.newValue));
visualElement.Add(highlightField);
}
private void ShapeMouseDownActions(MouseEventArgs e)
{
switch (curShapeAction)
{
case ShapeAction.Nothing:
if (CheckSelectedShape(e).Count == 0)
{
curShapeAction = ShapeAction.Drawing;
ClearRealSelectedShape();
PrepareToDrawShape(e);
}
else
{
curShapeAction = ShapeAction.MovingShape;
selectedShapes = CheckSelectedShape(e);
SendMouseAction(selectedShapes, e, MouseAction.Down);
}
break;
default:
break;
}
}
private void RemoveShapeAction(ShapeAction shapeAction, VisualElement visualElement)
{
m_Stage.RemoveAction(shapeAction);
m_ShapeActionsListVisualElement.Remove(visualElement);
}