change logic, generateSVG not on gongdoc.Commit() anymore

[thomaspeugeot]

OK, progress, but three issues:

• [x] when a diagram is saved, the diagram rolls back to the state it was before modifications
• [ ] when moved, RectAnchoredText and RectAnchoredRect are not dsplayed anymore
• [ ] generateSVG is performed at least twice during updateto be solved when tree/node is moved to a separate stack

[thomaspeugeot]

Analysis of diagram state rollback.

• Move Rect to the Left

    rectImplGongstructShape.gongstructShape.Position.X = updatedRect.X
    rectImplGongstructShape.gongstructShape.Position.Y = updatedRect.Y
    rectImplGongstructShape.gongstructShape.Width = updatedRect.Width
    rectImplGongstructShape.gongstructShape.Heigth = updatedRect.Height

problem, updatedRect has not changed. X is still 210

up the callstack analysis. OK, vu. Problem on the gongsvg stack.

func (rect *Rect) OnAfterUpdate(stage *StageStruct, _, frontRect *Rect) {

    log.Println("Rect, OnAfterUpdate", rect.Name)

    if rect.Impl != nil {
        rect.Impl.RectUpdated(rect)
    }

updatedRect should be called