private void PushUndoStack()
{
// Undo/Redo
ISupportUndo pageVMUndo = designerCanvas.DataContext as ISupportUndo;
IGroupOperation pageVMGroup = designerCanvas.DataContext as IGroupOperation;
if (pageVMUndo == null)
{
return;
}
CompositeCommand cmds = new CompositeCommand();
IPagePropertyData Page = designerCanvas.DataContext as IPagePropertyData;
bool bHasGroup = Page.GetSelectedwidgets().Any(a => a.IsGroup);
// Create undoable command for widgets
foreach (WidgetViewModBase item in _infoItems)
{
item.PropertyMementos.SetPropertyNewValue("Left", item.Raw_Left);
item.PropertyMementos.SetPropertyNewValue("Top", item.Raw_Top);
if (item.WidgetType == WidgetType.Toast && item.Top != 0)
{
item.PropertyMementos.SetPropertyNewValue("DisplayPosition", ToastDisplayPosition.UserSetting);
}
PropertyChangeCommand cmd = new PropertyChangeCommand(item, item.PropertyMementos);
cmds.AddCommand(cmd);
}
// Create undoable command for groups
if (pageVMGroup != null)
{
List <Guid> groupGuids = _groups.Select(x => x.WidgetID).ToList();
if (designerItem.ParentID != Guid.Empty)
{
groupGuids.Add(designerItem.ParentID);
}
if (groupGuids.Count > 0)
{
UpdateGroupCommand cmd = new UpdateGroupCommand(pageVMGroup, groupGuids);
cmds.AddCommand(cmd);
}
}
// Push to undo stack
if (cmds.Count > 0)
{
List <IWidgetPropertyData> allSelects = _selectionService.GetSelectedWidgets();
cmds.AddCommand(new SelectCommand(pageVMGroup, allSelects));
cmds.DeselectAllWidgetsFirst();
pageVMUndo.UndoManager.Push(cmds);
}
}
private void MoveThumb_DragDelta(object sender, DragDeltaEventArgs e)
{
//Initialize to avoid exception
if (this.designerItem == null || this.designerCanvas == null)
{
return;
}
//Initialize the selected widgets' context when first move
if (bIsMousePressMove == false)
{
designerItem.IsAfterDraged = true;
if (designerItem.IsSelected == false)
{
designerItem.SelectCurrentWidget();
}
if (Keyboard.IsKeyDown(Key.LeftCtrl) == true || Keyboard.IsKeyDown(Key.RightCtrl) == true)
{
IsCtrlPressed = true;
}
else
{
IsCtrlPressed = false;
}
if (IsCtrlPressed == true && Mouse.LeftButton == MouseButtonState.Pressed)
{
//Cursor = CopyCur;
//designerItem.IsStyleBrushModel = null;
if (designerItem == null)
{
return;
}
WidgetViewModBase wVM = designerItem.DataContext as WidgetViewModBase;
wVM.IsBrushModel = null;
}
AdornerLayer adornerLayer = AdornerLayer.GetAdornerLayer(designerCanvas);
if (adornerLayer != null)
{
adorner = new PreveiwMoveAdorner(designerCanvas);
if (adorner != null)
{
adornerLayer.Add(adorner);
}
}
IPagePropertyData Page = designerCanvas.DataContext as IPagePropertyData;
foreach (WidgetViewModBase item in Page.GetSelectedwidgets())
{
if (item.IsLocked == true)
{
continue;
}
if (item.IsGroup == true)
{
GroupViewModel group = item as GroupViewModel;
if (group == null)
{
continue;
}
// Create a property memento when drag start
foreach (WidgetViewModBase child in group.WidgetChildren)
{
child.CreateNewPropertyMementos();
child.PropertyMementos.AddPropertyMemento(new PropertyMemento("Left", child.Raw_Left, child.Raw_Left));
child.PropertyMementos.AddPropertyMemento(new PropertyMemento("Top", child.Raw_Top, child.Raw_Top));
_infoItems.Add(child);
}
_groups.Add(group);
}
else
{
item.CreateNewPropertyMementos();
item.PropertyMementos.AddPropertyMemento(new PropertyMemento("Left", item.Raw_Left, item.Raw_Left));
item.PropertyMementos.AddPropertyMemento(new PropertyMemento("Top", item.Raw_Top, item.Raw_Top));
if (item.WidgetType == WidgetType.Toast && item.Top == 0)
{
item.PropertyMementos.AddPropertyMemento(new PropertyMemento("DisplayPosition", ToastDisplayPosition.Top, ToastDisplayPosition.Top));
}
_infoItems.Add(item);
}
}
bIsMousePressMove = true;
}
SendFirePositionEvent(false);
//Move adorner to show drag process
MoveAdorner(sender, e);
//Move Widgets, the older solution, discarded
//if (_infoItems.Count > 0 || _groups.Count > 0)
//{
// MoveSelectedWidgets(sender,e);
//}
//set routed event is handled
e.Handled = true;
}
