/// <summary>
/// Fügt einen neuen Eintrag in die Undo-Liste ein, wenn ein neues Control angelegt wird.
/// </summary>
/// <param name="ctl"></param>
public void AddNew(HitbaseControl ctl)
{
if (!initialized)
{
return;
}
if (currentUndoStep == null)
{
throw new Exception("BeginUndoStep must be called first.");
}
UndoEntry entry = new UndoEntry();
entry.undoAction = UndoAction.New;
entry.controlID = ctl.ControlID;
if (ctl.Parent == null)
{
entry.parentControlID = 0; // Hat keinen Parent
}
else
{
entry.parentControlID = ctl.Parent.ControlID;
}
currentUndoStep.undoEntry.Push(entry);
}
/// <summary>
/// Führt einen einzelnen Undo-Step aus.
/// </summary>
/// <param name="step"></param>
private void DoUndoStep(UndoStep step)
{
while (step.undoEntry.Count > 0)
{
UndoEntry entry = step.undoEntry.Pop();
switch (entry.undoAction)
{
case UndoAction.ChangeProperty:
{
// Property-Änderung rückgängig machen.
HitbaseControl hlControl = mainWindowControl.FindHitbaseControlFromID(entry.controlID);
mainWindowControl.ChangeProperty(hlControl, entry.property, entry.value);
break;
}
case UndoAction.Delete:
{
// Löschen eines Objektes rückgängig machen.
HitbaseControl newControl = mainWindowControl.AddControlFromStream(entry.parentControlID, entry.controlIndex, entry.serializedObject, true);
newControl.SetTabIndex(entry.tabIndex);
break;
}
case UndoAction.New:
{
HitbaseControl ctl = mainWindowControl.FindHitbaseControlFromID(entry.controlID);
HitbaseControl parent;
if (entry.parentControlID != 0)
{
parent = mainWindowControl.FindHitbaseControlFromID(entry.controlID);
}
else
{
parent = null;
}
mainWindowControl.DeleteHitbaseControlWithChilds(parent, ctl);
break;
}
}
}
}
/// <summary>
/// Fügt einen neuen Eintrag in die Undo-Liste ein, wenn eine Property eines Controls geändert wird.
/// </summary>
/// <param name="controlID"></param>
/// <param name="prop"></param>
/// <param name="value"></param>
public void AddPropertyChange(int controlID, string prop, object value)
{
if (!initialized)
{
return;
}
if (currentUndoStep == null)
{
throw new Exception("BeginUndoStep must be called first.");
}
UndoEntry entry = new UndoEntry();
entry.undoAction = UndoAction.ChangeProperty;
entry.controlID = controlID;
entry.property = prop;
entry.value = value;
currentUndoStep.undoEntry.Push(entry);
}
/// <summary>
/// Fügt einen neuen Eintrag in die Undo-Liste ein, wenn ein Control gelöscht wird.
/// </summary>
/// <param name="ctl"></param>
public void AddDelete(HitbaseControl ctl)
{
if (!initialized)
{
return;
}
if (currentUndoStep == null)
{
throw new Exception("BeginUndoStep must be called first.");
}
UndoEntry entry = new UndoEntry();
entry.undoAction = UndoAction.Delete;
entry.controlID = ctl.ControlID;
BinaryFormatter bf = new BinaryFormatter();
MemoryStream mem = new MemoryStream();
bf.Serialize(mem, ctl);
entry.serializedObject = mem.ToArray();
mem.Close();
if (ctl.Parent == null)
{
entry.parentControlID = 0;
}
else
{
entry.parentControlID = ctl.Parent.ControlID;
entry.controlIndex = ctl.Parent.GetChildIndex(ctl);
entry.tabIndex = ctl.GetTabIndex();
}
currentUndoStep.undoEntry.Push(entry);
}