/// <summary>
/// Sets a memento for this object.
/// </summary>
/// <param name="memento"></param>
public virtual void SetMemento(object memento)
{
PointMemento pointMemento = (PointMemento)memento;
this.CoordinateSystem = CoordinateSystem.Source;
this.TextLocation = pointMemento.Point;
this.ResetCoordinateSystem();
}
/// <summary>
/// Creates a memento of this object.
/// </summary>
/// <returns></returns>
public virtual object CreateMemento()
{
// Must store source coordinates in memento
this.CoordinateSystem = CoordinateSystem.Source;
PointMemento memento = new PointMemento(this.TextLocation);
this.ResetCoordinateSystem();
return(memento);
}
/// <summary>
/// Captures the state of an object.
/// </summary>
/// <remarks>
/// The implementation of <see cref="IMemorable.CreateMemento"/> should return an
/// object containing enough state information so that
/// when <see cref="IMemorable.SetMemento"/> is called, the object can be restored
/// to the original state.
/// </remarks>
public object CreateMemento()
{
PointMemento pointMemento;
this.CoordinateSystem = CoordinateSystem.Source;
try
{
pointMemento = new PointMemento(this.Anchor);
}
finally
{
this.ResetCoordinateSystem();
}
return(pointMemento);
}
/// <summary>
/// Captures the current state of this <see cref="TextPlaceholderControlGraphic"/>.
/// </summary>
public override object CreateMemento()
{
PointMemento pointMemento;
this.Subject.CoordinateSystem = CoordinateSystem.Source;
try
{
pointMemento = new PointMemento(this.Subject.Location);
}
finally
{
this.Subject.ResetCoordinateSystem();
}
return(pointMemento);
}
/// <summary>
/// Restores the state of this <see cref="TextPlaceholderControlGraphic"/>.
/// </summary>
/// <param name="memento">The object that was originally created with <see cref="TextPlaceholderControlGraphic.CreateMemento"/>.</param>
public override void SetMemento(object memento)
{
PointMemento pointMemento = memento as PointMemento;
if (pointMemento == null)
{
throw new ArgumentException("The provided memento is not the expected type.", "memento");
}
this.Subject.CoordinateSystem = CoordinateSystem.Source;
try
{
this.Subject.Location = pointMemento.Point;
}
finally
{
this.Subject.ResetCoordinateSystem();
}
}
/// <summary>
/// Restores the state of an object.
/// </summary>
/// <param name="memento">The object that was
/// originally created with <see cref="IMemorable.CreateMemento"/>.</param>
/// <remarks>
/// The implementation of <see cref="IMemorable.SetMemento"/> should return the
/// object to the original state captured by <see cref="IMemorable.CreateMemento"/>.
/// </remarks>
public void SetMemento(object memento)
{
PointMemento pointMemento = memento as PointMemento;
if (pointMemento == null)
{
throw new ArgumentException("The provided memento is not the expected type.", "memento");
}
this.CoordinateSystem = CoordinateSystem.Source;
try
{
// figure out what delta is needed to move the anchor to the desired point specified by the memento
this.Move(Vector.CalculatePositionDelta(this.Anchor, pointMemento.Point));
}
finally
{
this.ResetCoordinateSystem();
}
}
/// <summary>
/// Restores the state of this <see cref="AnchorPointControlGraphic"/>.
/// </summary>
/// <param name="memento">The object that was originally created with <see cref="AnchorPointControlGraphic.CreateMemento"/>.</param>
public override void SetMemento(object memento)
{
PointMemento pointMemento = memento as PointMemento;
if (pointMemento == null)
{
throw new ArgumentException("The provided memento is not the expected type.", "memento");
}
_suspendSubjectPointChangeEvents = true;
this.Subject.CoordinateSystem = CoordinateSystem.Source;
try
{
this.Subject.Point = pointMemento.Point;
}
finally
{
this.Subject.ResetCoordinateSystem();
_suspendSubjectPointChangeEvents = false;
this.OnSubjectPointChanged(this, EventArgs.Empty);
}
}
