public MesCommand GetCommand(MesCommandDefinitionBase commandDefinition)
{
MesCommand command;
if (!_commands.TryGetValue(commandDefinition, out command))
{
command = _commands[commandDefinition] = new MesCommand(commandDefinition);
}
return(command);
}
private MesCommandHandlerWrapper FindCommandHandlerInVisualTree(MesCommandDefinitionBase commandDefinition, IInputElement target)
{
if (!(target is DependencyObject visualObject))
{
return(null);
}
Object previousDataContext = null;
do
{
if (visualObject is FrameworkElement frameworkElement)
{
Object dataContext = frameworkElement.DataContext;
if (dataContext != null && !ReferenceEquals(dataContext, previousDataContext))
{
if (dataContext is IMesCommandRerouter commandRerouter)
{
Object commandTarget = commandRerouter.GetHandler(commandDefinition);
if (commandTarget != null)
{
if (IsCommandHandlerForCommandDefinitionType(commandTarget, commandDefinition.GetType()))
{
return(CreateCommandHandlerWrapper(commandDefinition.GetType(), commandTarget));
}
throw new InvalidOperationException("This object does not handle the specified command definition.");
}
}
if (IsCommandHandlerForCommandDefinitionType(dataContext, commandDefinition.GetType()))
{
return(CreateCommandHandlerWrapper(commandDefinition.GetType(), dataContext));
}
previousDataContext = dataContext;
}
}
visualObject = VisualTreeHelper.GetParent(visualObject);
} while (visualObject != null);
return(null);
}
private MesCommandHandlerWrapper GetCommandHandlerForLayoutItem(MesCommandDefinitionBase commandDefinition, object activeItemViewModel)
{
#warning GetCommandHendlerForLayoutItem
#if false
var activeItemView = ViewLocator.LocateForModel(activeItemViewModel, null, null);
var activeItemWindow = Window.GetWindow(activeItemView);
if (activeItemWindow == null)
{
return(null);
}
var startElement = FocusManager.GetFocusedElement(activeItemView) ?? activeItemView;
// First, we look at the currently focused element, and iterate up through
// the tree, giving each DataContext a chance to handle the command.
return(FindCommandHandlerInVisualTree(commandDefinition, startElement));
#endif
throw new NotImplementedException();
}
public MesCommandHandlerWrapper GetCommandHandler(MesCommandDefinitionBase commandDefinition)
{
#warning GetCommandHandler
#if false
CommandHandlerWrapper commandHandler;
var shell = Mvx.IoCProvider.Resolve <IShell>();
var activeItemViewModel = shell.ActiveLayoutItem;
if (activeItemViewModel != null)
{
commandHandler = GetCommandHandlerForLayoutItem(commandDefinition, activeItemViewModel);
if (commandHandler != null)
{
return(commandHandler);
}
}
var activeDocumentViewModel = shell.ActiveItem;
if (activeDocumentViewModel != null && !Equals(activeDocumentViewModel, activeItemViewModel))
{
commandHandler = GetCommandHandlerForLayoutItem(commandDefinition, activeDocumentViewModel);
if (commandHandler != null)
{
return(commandHandler);
}
}
// If none of the objects in the DataContext hierarchy handle the command,
// fallback to the global handler.
if (!_globalCommandHandlerWrappers.TryGetValue(commandDefinition.GetType(), out commandHandler))
{
return(null);
}
return(commandHandler);
#endif
throw new NotImplementedException();
}
public KeyGesture GetPrimaryKeyGesture(MesCommandDefinitionBase commandDefinition)
{
var keyboardShortcut = _keyboardShortcuts.FirstOrDefault(x => x.CommandDefinition == commandDefinition);
return(keyboardShortcut?.KeyGesture);
}
public MesCommandToolBarItemDefinition(MesToolBarItemGroupDefinition group, int sortOrder, ToolBarItemDisplay display = ToolBarItemDisplay.IconOnly)
: base(group, sortOrder, display)
{
_commandDefinition = Mvx.IoCProvider.Resolve <IMesCommandService>().GetCommandDefinition(typeof(TCommandDefinition));
_keyGesture = Mvx.IoCProvider.Resolve <IMesCommandKeyGestureService>().GetPrimaryKeyGesture(_commandDefinition);
}
public MesCommandMenuItemDefinition(MesMenuItemGroupDefinition group, int sortOrder)
: base(group, sortOrder)
{
_commandDefinition = Mvx.IoCProvider.Resolve <IMesCommandService>().GetCommandDefinition(typeof(TCommandDefinition));
_keyGesture = Mvx.IoCProvider.Resolve <IMesCommandKeyGestureService>().GetPrimaryKeyGesture(_commandDefinition);
}
