protected override void Setup()
{
currentCellService = UIServiceProvider.GetService <ICurrentCellService>(TargetElement);
Debug.Assert(currentCellService != null);
inputService = UIServiceProvider.GetService <InputService>(TargetElement);
Debug.Assert(inputService != null);
scrollService = UIServiceProvider.GetService <IVerticalScrollService>(TargetElement);
Debug.Assert(scrollService != null);
inputService.RegisterKeyActionGestures(AsLineKeyAction(MoveLineDown), new KeyGesturesFactory(Key.Down, InputGesturesFactory.AllCombinationsOf(ModifierKeys.Control, ModifierKeys.Shift)));
inputService.RegisterKeyActionGestures(AsLineKeyAction(MoveLineUp), new KeyGesturesFactory(Key.Up, InputGesturesFactory.AllCombinationsOf(ModifierKeys.Control, ModifierKeys.Shift)));
inputService.RegisterKeyActionGestures(AsLineKeyAction(MovePageDown), new KeyGesturesFactory(Key.PageDown, InputGesturesFactory.AllCombinationsOf(ModifierKeys.Control, ModifierKeys.Shift)));
inputService.RegisterKeyActionGestures(AsLineKeyAction(MovePageUp), new KeyGesturesFactory(Key.PageUp, InputGesturesFactory.AllCombinationsOf(ModifierKeys.Control, ModifierKeys.Shift)));
inputService.RegisterKeyActionGestures(AsLineKeyAction(MoveToTop), new KeyGesturesFactory(Key.Home, ModifierKeys.Control));
inputService.RegisterKeyActionGestures(AsLineKeyAction(MoveToBottom), new KeyGesturesFactory(Key.End, ModifierKeys.Control));
inputService.RegisterKeyActionGestures(AsFieldKeyAction(MoveRight), new KeyGesturesFactory(Key.Tab));
inputService.RegisterKeyActionGestures(AsFieldKeyAction(MoveRight), new KeyGesturesFactory(Key.Right, InputGesturesFactory.AllCombinationsOf(ModifierKeys.Control, ModifierKeys.Shift)));
inputService.RegisterKeyActionGestures(AsFieldKeyAction(MoveLeft), new KeyGesturesFactory(Key.Tab, ModifierKeys.Shift));
inputService.RegisterKeyActionGestures(AsFieldKeyAction(MoveLeft), new KeyGesturesFactory(Key.Left, InputGesturesFactory.AllCombinationsOf(ModifierKeys.Control, ModifierKeys.Shift)));
inputService.RegisterKeyActionGestures(AsFieldKeyAction(MoveToLeftMost), new KeyGesturesFactory(Key.Home));
inputService.RegisterKeyActionGestures(AsFieldKeyAction(MoveToRightMost), new KeyGesturesFactory(Key.End));
inputService.RegisterMouseActionGestures(MouseClicked, new MouseGesturesFactory(MouseAction.LeftClick, InputGesturesFactory.AllCombinationsOf(ModifierKeys.Shift, ModifierKeys.Control)));
}
private void TargetElement_PreviewLostKeyboardFocus(object sender, KeyboardFocusChangedEventArgs e)
{
log.DebugFormat("Losing keyboard focus: {0}, from {1}, to {2}", sender, e.OldFocus, e.NewFocus);
DependencyObject oldFocus = e.OldFocus as DependencyObject;
DependencyObject newFocus = e.NewFocus as DependencyObject;
if (oldFocus != null & newFocus != null)
{
if (TargetElement.IsAncestorOf(oldFocus) && TargetElement.IsAncestorOf(newFocus))
{
// Focus moved within the container.
return;
}
}
log.Debug("Saving state on UI service providers");
var statePersistentServices = UIServiceProvider.GetAllServices <IStatePersistency>(TargetElement);
foreach (var service in statePersistentServices)
{
service.SaveCurrentState();
}
}
private static void OnServiceListChanged(DependencyObject sender, DependencyPropertyChangedEventArgs changeArgs)
{
var element = sender as FrameworkElement;
var oldList = changeArgs.OldValue as UIServiceCollection;
if (element != null)
{
if (oldList != null)
{
var oldProvider = GetServiceProvider(element);
if (oldProvider != null)
{
oldProvider.Dispose();
}
}
// Create a service provider for the element.
UIServiceProvider newProvider = null;
var newList = changeArgs.NewValue as UIServiceCollection;
if (newList != null)
{
newProvider = new UIServiceProvider();
newProvider.AttachToElement(element, newList);
}
SetServiceProvider(element, newProvider);
}
}
public void AttachToElement(FrameworkElement element)
{
//if (TargetElement != null)
//{
// if (ReferenceEquals(TargetElement.ElementSelectionService, element))
// {
// log.DebugFormat("Extender {0} is already attached to element {1}", this, element);
// return;
// }
// throw new InvalidOperationException("Cannot re-attach an attached extender");
//}
TargetElementProxy = UIServiceProvider.GetService <IMultiSelectionService>(element);
SetSelectionExtender(element, this);
var selectionView = GetSelectionView(element);
this.AttachSelectionModel(null, selectionView);
TargetElementProxy.SelectionChanged += TargetElement_SelectionChanged;
currentItemTracker = UIServiceProvider.GetService <ICurrentItemService>(element, false);
currentItemTracker.CurrentChanged += new EventHandler(currentItemTracker_CurrentChanged);
currentItemTracker.PreviewCurrentChanging += CurrentItemTracker_PreviewCurrentChanging;
//if (currentItemTracker != null)
//{
// selectionModeManager = new SelectionModeManager(TargetElement);
//}
var inputService = UIServiceProvider.GetService <InputService>(TargetElement);
inputService.RegisterMouseActionGestures(ToggleSelection, new MouseGesturesFactory(MouseAction.LeftClick, ModifierKeys.Control));
inputService.RegisterKeyActionGestures(ToggleSelection, new KeyGesturesFactory(Key.Space, ModifierKeys.Control));
//inputService.RegisterMouseActionGestures(SelectRange, new MouseGesturesFactory(MouseAction.LeftClick, ModifierKeys.Shift));
}
private void DataGrid_CurrentCellChanged(object sender, EventArgs e)
{
var fm = UIServiceProvider.GetService <IFocusManagementService>(dataGrid);
if (fm.IsRestoringFocusOnElement)
{
// The data grid is loosing focus, in which case it automatically sets 'CurrentCell' to be 'null'.
// We need to ignore this case so nothing will be changed on screen.
return;
}
if (!isSelfInducedCellChange.IsSet)
{
RaiseNonCancelablePreviewCurrentCellChangingEvent(CurrentCell);
var newRowService = GetRowEnumerationServiceForItem(dataGrid.CurrentCell.Item);
if (newRowService != null)
{
var columnIndex = 0;
if (dataGrid.CurrentCell.Column != null)
{
columnIndex = dataGrid.CurrentCell.Column.DisplayIndex;
}
currentCellPosition.SetCurrentCellIndex(newRowService, columnIndex);
}
}
UpdateCurrentCell();
if (!isSelfInducedCellChange.IsSet)
{
RaiseCurrentCellChangedEvent();
}
}
public bool MoveTo(UniversalCellInfo targetCell)
{
if (inMoveTo.IsSet)
{
return(true);
}
return((bool)dataGrid.Dispatcher.Invoke(DispatcherPriority.Loaded, new Func <bool>(() =>
{
bool canceled;
log.DebugFormat("Moving to cell {0}", targetCell);
UpdateCurrentCell();
if (!CanMoveTo(targetCell))
{
return CannotMoveToCell(targetCell);
}
if (!suppressChangeNotifications.IsSet)
{
RaisePreviewCurrentCellChangingEvent(targetCell, out canceled);
if (canceled)
{
return OperationCanceled();
}
}
using (isSelfInducedCellChange.Set())
{
if (targetCell.CellIndex >= dataGrid.Columns.Count)
{
return false;
}
var rowEnumSvc = GetRowEnumerationServiceForItem(targetCell.Item);
// If changing the row type (according to the row service), we should retake the cell index.
if (CurrentRowCellEnumerationService == null ||
rowEnumSvc.ServiceGroupIdentifier.Equals(CurrentRowCellEnumerationService.ServiceGroupIdentifier))
{
currentCellPosition.SetCurrentCellIndex(rowEnumSvc, targetCell.CellIndex);
}
var newCell = rowEnumSvc.GetCellInfo(currentCellPosition.GetCurrentCellIndex(rowEnumSvc));
var fm = UIServiceProvider.GetService <IFocusManagementService>(dataGrid);
elementTraits.SetCurrentCell(this.dataGrid, newCell);
UpdateCurrentCell();
fm.SetFocusOnTargetElement();
if (!suppressChangeNotifications.IsSet)
{
RaiseCurrentCellChangedEvent();
}
}
return CurrentCell.Equals(targetCell);
})));
}
private void EnableEditing()
{
var editSvc = UIServiceProvider.GetService <IElementEditStateService>(TargetElement, false);
if (editSvc != null)
{
editSvc.EnableEditing();
}
}
public void AttachToElement(FrameworkElement element)
{
TargetElement = element;
currentCellService = UIServiceProvider.GetService <ICurrentCellService>(TargetElement);
currentCellService.CurrentCellChanged += new EventHandler(currentCellService_CurrentCellChanged);
TargetElement.PreviewGotKeyboardFocus += TargetElement_PreviewGotKeyboardFocus;
TargetElement.PreviewLostKeyboardFocus += TargetElement_PreviewLostKeyboardFocus;
}
private bool DisableEditing()
{
var editSvc = UIServiceProvider.GetService <IElementEditStateService>(TargetElement, false);
if (editSvc != null)
{
return(editSvc.DisableEditing());
}
return(true);
}
public void AttachToElement(FrameworkElement element)
{
this.dataGrid = (DataGrid)element;
dataGrid.BeginningEdit += dataGrid_BeginningEdit;
dataGrid.CellEditEnding += dataGrid_CellEditEnding;
dataGrid.RowEditEnding += dataGrid_RowEditEnding;
dataGrid.PreparingCellForEdit += dataGrid_PreparingCellForEdit;
UIServiceProvider.AddServiceProviderFullyAttachedHandler(dataGrid, ServiceProvider_FullyAttached);
}
private void TargetElement_PreviewGotKeyboardFocus(object sender, KeyboardFocusChangedEventArgs e)
{
log.DebugFormat("Regaining keyboard focus: {0}, from {1}, to {2}", sender, e.OldFocus, e.NewFocus);
//if (isUpdatingFocus.IsSet)
// return;
if (isFirstFocus)
{
isFirstFocus = false;
log.Debug("Got focus for the first time.");
UpdateFocus();
return;
}
if (isRestoringState.IsSet)
{
return;
}
using (isRestoringState.Set())
{
DependencyObject oldFocus = e.OldFocus as DependencyObject;
if (oldFocus == null)
{
log.Debug("Old focus is null. Not restoring focus.");
return;
}
DependencyObject newFocus = e.NewFocus as DependencyObject;
if (newFocus != null)
{
if (TargetElement.IsAncestorOf(oldFocus) && TargetElement.IsAncestorOf(newFocus))
{
log.DebugFormat("Focus changed within the same element");
// Focus moved within the container.
return;
}
}
log.Debug("Restoring state on UI service providers");
var statePersistentServices = UIServiceProvider.GetAllServices <IStatePersistency>(TargetElement);
foreach (var service in statePersistentServices)
{
service.RestoreState();
}
}
}
private static UIServiceProvider CreateServiceProvider(FrameworkElement element)
{
var serviceList = GetServiceList(element);
if (serviceList == null)
{
return(null);
}
log.DebugFormat("Creating a new service provider for {0}", element);
var serviceProvider = new UIServiceProvider();
SetServiceProvider(element, serviceProvider);
serviceProvider.AttachToElement(element, serviceList);
return(serviceProvider);
}
private ICellEnumerationService GetRowEnumerationServiceForItem(object item)
{
log.DebugFormat(FrameworkElementFormatter.GetInstance(), "Trying to get row enumeration service for {0}", item);
var currentRow = GetItemContainer(item) as DataGridRow;
if (currentRow == null)
{
log.DebugFormat("-- Failed retrieving item container from '{0}'", item);
return(null);
}
var service = UIServiceProvider.GetService <ICellEnumerationService>(currentRow);
log.DebugFormat("-- Found service provider {0}", service);
//((IUIService)service).AttachToElement(currentRow);
return(service);
}
private void MouseClicked(MouseEventArgs eventArgs)
{
log.Debug("Mouse was clicked on " + eventArgs.OriginalSource);
var focusManager = UIServiceProvider.GetService <IFocusManagementService>(TargetElement);
focusManager.SetFocusOnTargetElement();
HitTestResult hitTestResult = VisualTreeHelper.HitTest(TargetElement, Mouse.GetPosition(TargetElement));
var row = UIUtils.GetAncestor <DataGridRow>((Visual)hitTestResult.VisualHit);
if (row != null)
{
var rowEnumSvc = UIServiceProvider.GetService <ICellEnumerationService>(row);
UniversalCellInfo cellInfo = rowEnumSvc.GetCellContaining(hitTestResult.VisualHit);
if (!currentCellService.CurrentCell.Equals(cellInfo))
{
currentCellService.MoveTo(cellInfo);
eventArgs.Handled = true;
}
}
}
public virtual void AttachToElement(FrameworkElement servedElement)
{
sharedObjectsService = UIServiceProvider.GetService <SharedObjectsService>(servedElement);
element = servedElement;
}
private void ServiceProvider_FullyAttached(object obj, EventArgs args)
{
commandRegulator = UIServiceProvider.GetService <ICommandRegulationService>(dataGrid);
}
private static void SetServiceProvider(DependencyObject obj, UIServiceProvider value)
{
obj.SetValue(ServiceProviderProperty, value);
}