public OverviewMapController(MapView overview)
{
_insetView = overview;
_extentOverlay = new GraphicsOverlay();
if (_insetView.GraphicsOverlays == null)
{
_insetView.GraphicsOverlays = new GraphicsOverlayCollection();
}
_insetView.GraphicsOverlays.Add(_extentOverlay);
_extentGraphic = new Graphic();
_extentOverlay.Graphics.Add(_extentGraphic);
// _overview.ViewpointChanged += OnViewpointChanged
_viewpointListener = new WeakEventListener <GeoView, object?, EventArgs>(_insetView)
{
OnEventAction = (instance, source, eventArgs) => OnInsetViewpointChanged(source, eventArgs),
OnDetachAction = (instance, weakEventListener) => instance.ViewpointChanged -= weakEventListener.OnEvent,
};
_insetView.ViewpointChanged += _viewpointListener.OnEvent;
// _overview.NavigationCompleted += OnNavigationCompleted;
_navigationListener = new WeakEventListener <GeoView, object?, EventArgs>(_insetView)
{
OnEventAction = (instance, source, eventArgs) => OnInsetNavigationCompleted(source, eventArgs),
OnDetachAction = (instance, weakEventListener) => instance.NavigationCompleted -= weakEventListener.OnEvent,
};
_insetView.NavigationCompleted += _navigationListener.OnEvent;
}
private void OnItemsSourceChanged(IEnumerable oldValue, IEnumerable newValue)
{
// Remove handler for oldValue.CollectionChanged (if present)
INotifyCollectionChanged oldValueINotifyCollectionChanged = oldValue as INotifyCollectionChanged;
if (null != oldValueINotifyCollectionChanged && null != _collectionChangedWeakEventListener)
{
_collectionChangedWeakEventListener.Detach();
_collectionChangedWeakEventListener = null;
}
// Add handler for newValue.CollectionChanged (if possible)
INotifyCollectionChanged newValueINotifyCollectionChanged = newValue as INotifyCollectionChanged;
if (null != newValueINotifyCollectionChanged)
{
_collectionChangedWeakEventListener = new WeakEventListener <MultiCircleChart, object, NotifyCollectionChangedEventArgs>(this);
_collectionChangedWeakEventListener.OnEventAction = (instance, source, eventArgs) => instance.ItemsSourceCollectionChanged(source, eventArgs);
_collectionChangedWeakEventListener.OnDetachAction = (weakEventListener) => newValueINotifyCollectionChanged.CollectionChanged -= weakEventListener.OnEvent;
newValueINotifyCollectionChanged.CollectionChanged += _collectionChangedWeakEventListener.OnEvent;
}
// Store a local cached copy of the data
_items = newValue == null ? null : new List <object>(newValue.Cast <object>().ToList());
//// Clear and set the view on the selection adapter
RefreshView();
}
public SpreadsheetCellDataFieldViewModel(Type viewModelType, PropertyInfo propertyInfo, IEditableProxy model, DetailsViewModel parentViewModel, IColumnItem column)
{
_propertyInfo = propertyInfo;
_parentModel = model;
if (_parentModel != null)
{
var parentModelBO = _parentModel as BusinessBase;
if (parentModelBO != null)
{
var weakListener = new WeakEventListener<SpreadsheetCellDataFieldViewModel, BusinessBase, PropertyChangedEventArgs>(this, parentModelBO);
parentModelBO.PropertyChanged += weakListener.OnEvent;
weakListener.OnEventAction += OnParentModelPropertyChanged;
weakListener.OnDetachAction += Static;
}
_allProperties = _parentModel.GetAllPropertiesForInstance();
var root = _parentModel.GetModel();
if (root != null)
_allMasterProperties = root.GetAllPropertiesForInstance();
}
_parentDetailsVM = parentViewModel;
_fieldViewModelType = viewModelType;
_column = column;
}
public CollectionView(IEnumerable collection)
{
_sourceCollection = collection ?? throw new ArgumentNullException("collection");
// forward collection change events from underlying collection to our listeners.
INotifyCollectionChanged incc = collection as INotifyCollectionChanged;
if (incc != null)
{
_sourceWeakEventListener =
new WeakEventListener <CollectionView, object, NotifyCollectionChangedEventArgs>(this)
{
// Call the actual collection changed event
OnEventAction = (source, changed, arg) => OnCollectionChanged(source, arg),
// The source doesn't exist anymore
OnDetachAction = (listener) => incc.CollectionChanged -= _sourceWeakEventListener.OnEvent
};
incc.CollectionChanged += _sourceWeakEventListener.OnEvent;
}
_currentItem = null;
_currentPosition = -1;
SetFlag(CollectionViewFlags.IsCurrentBeforeFirst, _currentPosition < 0);
SetFlag(CollectionViewFlags.IsCurrentAfterLast, _currentPosition < 0);
SetFlag(CollectionViewFlags.CachedIsEmpty, _currentPosition < 0);
}
private static void AttachObservableModelCallback(DependencyObject source, DependencyPropertyChangedEventArgs args)
{
var typeName = args.NewValue as string;
var view = source as FrameworkElement;
if (typeName == null || view == null)
return;
var modelType = Type.GetType("Raven.Studio.Models." + typeName) ?? Type.GetType(typeName);
if (modelType == null)
return;
try
{
var model = (Model)Activator.CreateInstance(modelType);
model.ForceTimerTicked();
var observable = (IObservable)Activator.CreateInstance(typeof(Observable<>).MakeGenericType(modelType));
observable.Value = model;
view.DataContext = observable;
SetPageTitle(model, view);
var weakListener = new WeakEventListener<IObservable, object, RoutedEventArgs>(observable);
view.Loaded += weakListener.OnEvent;
weakListener.OnEventAction = OnViewLoaded;
weakListener.OnDetachAction = listener => view.Loaded -= listener.OnEvent;
}
catch (Exception ex)
{
throw new InvalidOperationException(string.Format("Cannot create instance of model type: {0}", modelType), ex);
}
}
public TransitMap()
{
this.InitializeComponent();
MainMap.MapServiceToken = Keys.BingMapKey;
CenterConverter.Add(new LatLonTransformConverter()
{
Transform = ll => CenterOffset.IsNotALocation ? ll : ll + CenterOffset, ReverseTransform = ll => CenterOffset.IsNotALocation ? ll : ll - CenterOffset
});
CenterConverter.Add(LatLonToGeopointConverter.Instance);
WeakEventListener <TransitMap, object, NotifyCollectionChangedEventArgs> addInsListener = new WeakEventListener <TransitMap, object, NotifyCollectionChangedEventArgs>(this);
addInsListener.OnEventAction = (map, obj, e) => map.AddIns_CollectionChanged(obj, e);
AddIns.CollectionChanged += addInsListener.OnEvent;
MapRouteBindings = new CompositeCollectionBinding <MapRouteView, TransitMapAddInBase>(MainMap.Routes);
MapElementBindings = new CompositeCollectionBinding <MapElement, TransitMapAddInBase>(MainMap.MapElements);
MapChildrenBindings = new CompositeCollectionBinding <DependencyObject, TransitMapAddInBase>(MainMap.Children);
//MainMap.SetBinding(MapControl.CenterProperty, new Binding() { Converter = CenterConverters, Source = this, Path = new PropertyPath("Center"), Mode = BindingMode.TwoWay });
//MainMap.SetBinding(MapControl.ZoomLevelProperty, new Binding() { Source = this, Path = new PropertyPath("ZoomLevel"), Mode = BindingMode.TwoWay });
//MapIcon centerIndicator = new MapIcon() { NormalizedAnchorPoint = new Point(0.5, 1) };
//BindingOperations.SetBinding(centerIndicator, MapIcon.LocationProperty, new Binding() { Source = this, Path = new PropertyPath("Center"), Converter = LatLonToGeopointConverter.Instance });
//MainMap.MapElements.Add(centerIndicator);
}
private static void Detach([NotNull] WeakEventListener <ObservableFilteredCollection <T>, INotifyCollectionChanged, NotifyCollectionChangedEventArgs> weakEvent, [NotNull] INotifyCollectionChanged sender)
{
Contract.Requires(weakEvent != null);
Contract.Requires(sender != null);
sender.CollectionChanged -= weakEvent.OnEvent;
}
private void AttachLayersHandler(IEnumerable <Layer> layers)
{
if (layers != null)
{
// Subscribe to Layers Collection changes
var layersINotifyCollectionChanged = layers as INotifyCollectionChanged;
if (layersINotifyCollectionChanged != null)
{
Debug.Assert(_layersWeakEventListener == null);
_layersWeakEventListener = new WeakEventListener <TemplatePicker, object, NotifyCollectionChangedEventArgs>(this)
{
OnEventAction = (instance, source, eventArgs) => instance.OnLayerCollectionChanged(source, eventArgs),
OnDetachAction = weakEventListener => layersINotifyCollectionChanged.CollectionChanged -= weakEventListener.OnEvent
};
layersINotifyCollectionChanged.CollectionChanged += _layersWeakEventListener.OnEvent;
}
// Subscribe to FeatureLayers Property Changes
Debug.Assert(_featureLayerPropertyChangedListeners == null);
_featureLayerPropertyChangedListeners = new DependencyPropertyChangedListeners <TemplatePicker>(this)
{
OnEventAction = (instance, source, eventArgs) => instance.OnLayerPropertyChanged(source, eventArgs)
};
foreach (var layer in layers.OfType <FeatureLayer>())
{
AttachLayerHandler(layer);
}
}
}
private static void Attach([NotNull] WeakEventListener <ObservableWrappedCollection <TSource, TTarget>, INotifyCollectionChanged, NotifyCollectionChangedEventArgs> weakEvent, [NotNull] INotifyCollectionChanged sender)
{
Contract.Requires(weakEvent != null);
Contract.Requires(sender != null);
sender.CollectionChanged += weakEvent.OnEvent;
}
public void DoesNotLeakWithActionsDefinedInDisplayClass()
{
var source = new EventSource();
var counter = 0;
Action action = () =>
{
counter++;
};
var weakEventListener = WeakEventListener.SubscribeToWeakEvent(this, source, "PublicEvent", action);
Assert.AreEqual(0, counter);
source.RaisePublicEvent();
Assert.AreEqual(1, counter);
// Some dummy code to make sure the previous listener is removed
GC.Collect();
//Assert.IsTrue(weakEventListener.IsSourceAlive);
//Assert.IsFalse(weakEventListener.IsTargetAlive);
// Some dummy code to make sure the source stays in memory
source.GetType();
}
public virtual void Initialize(ChecklistSingleViewModel parentVM, IFieldDefinitionEntity fieldDef, IEventAggregator eventAggregator)
{
_eventAggregator = eventAggregator;
_process = (TemplateEntity)parentVM.QuestionsTemplate;
_parentVM = parentVM;
_fieldDefinition = fieldDef;
ChangeChartTypeCommand = new DelegateCommand(ExecuteChange);
PrepareFieldDefRelatedData();
var weakListener = new WeakEventListener<SPCChartControlViewModel, ChecklistViewModelBase, EventArgs>(this, parentVM);
parentVM.SelectesQuestionChanged += weakListener.OnEvent;
weakListener.OnEventAction = OnSelectedQuestionChanged;
weakListener.OnDetachAction = (listener, source) =>
{
source.SelectesQuestionChanged -= listener.OnEvent;
};
ShowLCLAnyChart = true; ShowUCLAnyChart = true; ShowMeanAnyChart = true;
ShowLCLRangeChart = true; ShowUCLRangeChart = true; ShowMeanRangeChart = true;
ShowUSL = false; ShowLSL = false;
OnSelectedQuestionChanged(this, parentVM, EventArgs.Empty);
}
public void AfterListenerIsNull_EventDetaching()
{
WasDetached = false;
EventCounter = 0;
var list = new ObservableCollection<int>();
WeakEventListener<object, ObservableCollection<int>, EventArgs> weakEventListener = null;
var obj = new object();
weakEventListener = new WeakEventListener<object, ObservableCollection<int>, EventArgs>(obj, list);
list.CollectionChanged += weakEventListener.OnEvent;
weakEventListener.OnEventAction += (o, o1, arg3) =>
{
EventCounter++;
};
weakEventListener.OnDetachAction += (listener, source) =>
{
source.CollectionChanged -= listener.OnEvent;
WasDetached = true;
};
list.Add(1);
obj = null;
GC.Collect();
list.Add(2);
GC.Collect();
Assert.IsTrue(WasDetached);
Assert.AreEqual(EventCounter, 1);
}
/// <summary>
/// Called when the value of the ItemsSourceProperty property changes.
/// </summary>
/// <param name="oldValue">The old ItemsSource collection.</param>
/// <param name="newValue">The new ItemsSource collection.</param>
protected virtual void OnItemsSourcePropertyChanged(IEnumerable oldValue, IEnumerable newValue)
{
// Remove handler for oldValue.CollectionChanged (if present)
INotifyCollectionChanged oldValueINotifyCollectionChanged = oldValue as INotifyCollectionChanged;
if (null != oldValueINotifyCollectionChanged)
{
// Detach the WeakEventListener
if (null != _weakEventListener)
{
_weakEventListener.Detach();
_weakEventListener = null;
}
}
// Add handler for newValue.CollectionChanged (if possible)
INotifyCollectionChanged newValueINotifyCollectionChanged = newValue as INotifyCollectionChanged;
if (null != newValueINotifyCollectionChanged)
{
// Use a WeakEventListener so that the backwards reference doesn't keep this object alive
_weakEventListener = new WeakEventListener <TreeMap, object, NotifyCollectionChangedEventArgs>(this);
_weakEventListener.OnEventAction = (instance, source, eventArgs) => instance.ItemsSourceCollectionChanged(source, eventArgs);
_weakEventListener.OnDetachAction = (weakEventListener) => newValueINotifyCollectionChanged.CollectionChanged -= weakEventListener.OnEvent;
newValueINotifyCollectionChanged.CollectionChanged += _weakEventListener.OnEvent;
}
// Handle property change
RebuildTree();
}
private static void Detach([NotNull] WeakEventListener <ObservableSelectImpl <TSource, TTarget>, INotifyPropertyChanged, PropertyChangedEventArgs> weakEvent, [NotNull] INotifyPropertyChanged sender)
{
Contract.Requires(weakEvent != null);
Contract.Requires(sender != null);
sender.PropertyChanged -= weakEvent.OnEvent;
}
private void OnCollectionChanged(object oldValue, object newValue)
{
if (oldValue is INotifyCollectionChanged)
{
var incc = (INotifyCollectionChanged)oldValue;
incc.CollectionChanged -= Incc_CollectionChanged;
_inccWeakEventListener?.Detach();
_inccWeakEventListener = null;
}
if (newValue is IEnumerable)
{
if (newValue is INotifyCollectionChanged)
{
var incc = (INotifyCollectionChanged)newValue;
_inccWeakEventListener = new WeakEventListener <RotatorTile, object, NotifyCollectionChangedEventArgs>(this)
{
OnEventAction = (instance, source, eventArgs) => instance.Incc_CollectionChanged(source, eventArgs),
OnDetachAction = (listener) => incc.CollectionChanged -= listener.OnEvent
};
incc.CollectionChanged += _inccWeakEventListener.OnEvent;
}
Start();
}
else
{
_timer?.Stop();
}
}
/// <summary>
/// Handles changes to the ItemsSource property.
/// </summary>
/// <param name="oldValue">Old value.</param>
/// <param name="newValue">New value.</param>
private void OnItemsSourceChanged(IEnumerable oldValue, IEnumerable newValue)
{
// Remove handler for oldValue.CollectionChanged (if present)
INotifyCollectionChanged oldValueINotifyCollectionChanged = oldValue as INotifyCollectionChanged;
if (null != oldValueINotifyCollectionChanged)
{
// Detach the WeakEventListener
if (null != _weakEventListener)
{
_weakEventListener.Detach();
_weakEventListener = null;
}
}
// Add handler for newValue.CollectionChanged (if possible)
INotifyCollectionChanged newValueINotifyCollectionChanged = newValue as INotifyCollectionChanged;
if (null != newValueINotifyCollectionChanged)
{
// Use a WeakEventListener so that the backwards reference doesn't keep this object alive
_weakEventListener = new WeakEventListener <SeriesDefinition, object, NotifyCollectionChangedEventArgs>(this);
_weakEventListener.OnEventAction = (instance, source, eventArgs) => instance.ItemsSourceCollectionChanged(source, eventArgs);
_weakEventListener.OnDetachAction = (weakEventListener) => newValueINotifyCollectionChanged.CollectionChanged -= weakEventListener.OnEvent;
newValueINotifyCollectionChanged.CollectionChanged += _weakEventListener.OnEvent;
}
if (null != ParentDefinitionSeries)
{
ParentDefinitionSeries.SeriesDefinitionItemsSourceChanged(this, oldValue, newValue);
}
}
private void Handler()
{
var propertyChangedListener = new WeakEventListener<PopUpSearchView, ListBox, SelectionChangedEventArgs>(this, ListBoxItems);
ListBoxItems.SelectionChanged += propertyChangedListener.OnEvent;
propertyChangedListener.OnEventAction += ValuePropertyChanged;
propertyChangedListener.OnDetachAction += Static;
}
private void DetachDisposedListener()
{
if (_disposedListener != null)
{
_disposedListener.Detach();
_disposedListener = null;
}
}
internal void ReleaseEvents()
{
if (_innerListListener is not null)
{
CollectionChangedEventManager.RemoveListener((INotifyCollectionChanged)_innerList, _innerListListener);
_innerListListener = null;
}
}
private void UnregisterSelectedStopsSourceHandlers(ObservableCollection <TransitStop> collection)
{
if (SelectedStopsSource_CollectionChanged_Listener != null)
{
SelectedStopsSource_CollectionChanged_Listener.Detach();
SelectedStopsSource_CollectionChanged_Listener = null;
}
}
internal void ReleaseEvents()
{
if( _innerListListener != null )
{
CollectionChangedEventManager.RemoveListener( ( INotifyCollectionChanged )_innerList, _innerListListener );
_innerListListener = null;
}
}
/// <summary>
/// Initializes a new instance of the <see cref="SelectCrossRefViewModel"/> class.
/// </summary>
public SelectCrossRefViewModel()
{
CloseOnReturn = false;
var weakListener = new WeakEventListener<SelectCrossRefViewModel, ObservableCollection<object>, NotifyCollectionChangedEventArgs>(this, _selectedItems);
_selectedItems.CollectionChanged += weakListener.OnEvent;
weakListener.OnEventAction += SelectedItemsOnCollectionChanged;
weakListener.OnDetachAction += Static;
}
private void UnregisterStopsSourceHandlers(ObservableCollection <TransitStop> collection)
{
if (StopsSource_CollectionChanged_Listener != null)
{
collection.CollectionChanged -= StopsSource_CollectionChanged_Listener.OnEvent;
StopsSource_CollectionChanged_Listener?.Detach();
StopsSource_CollectionChanged_Listener = null;
}
}
private void UnsubscribeToDpiChanged()
{
if (_dpiChangedWeakEventListener != null)
{
var dpiChangedListener = _dpiChangedWeakEventListener;
_dpiChangedWeakEventListener = null;
CompatUtility.ExecuteOnUIThread(dpiChangedListener.Detach, Dispatcher);
}
}
private static void OnValuePropertyChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
var obj = (IsNullOrEmptyStateTrigger)d;
var val = e.NewValue;
obj.SetActive(IsNullOrEmpty(val));
if (val == null)
{
return;
}
// Try to listen for various notification events
// Starting with INorifyCollectionChanged
var valNotifyCollection = val as INotifyCollectionChanged;
if (valNotifyCollection != null)
{
var weakEvent = new WeakEventListener <INotifyCollectionChanged, object, NotifyCollectionChangedEventArgs>(valNotifyCollection)
{
OnEventAction = (instance, source, args) => obj.SetActive(IsNullOrEmpty(instance)),
OnDetachAction = (weakEventListener) => valNotifyCollection.CollectionChanged -= weakEventListener.OnEvent
};
valNotifyCollection.CollectionChanged += weakEvent.OnEvent;
return;
}
// Not INotifyCollectionChanged, try IObservableVector
var valObservableVector = val as IObservableVector <object>;
if (valObservableVector != null)
{
var weakEvent = new WeakEventListener <IObservableVector <object>, object, IVectorChangedEventArgs>(valObservableVector)
{
OnEventAction = (instance, source, args) => obj.SetActive(IsNullOrEmpty(instance)),
OnDetachAction = (weakEventListener) => valObservableVector.VectorChanged -= weakEventListener.OnEvent
};
valObservableVector.VectorChanged += weakEvent.OnEvent;
return;
}
// Not INotifyCollectionChanged, try IObservableMap
var valObservableMap = val as IObservableMap <object, object>;
if (valObservableMap != null)
{
var weakEvent = new WeakEventListener <IObservableMap <object, object>, object, IMapChangedEventArgs <object> >(valObservableMap)
{
OnEventAction = (instance, source, args) => obj.SetActive(IsNullOrEmpty(instance)),
OnDetachAction = (weakEventListener) => valObservableMap.MapChanged -= weakEventListener.OnEvent
};
valObservableMap.MapChanged += weakEvent.OnEvent;
}
}
public NetworkConnectionStateTrigger()
{
WeakEventListener
.AttachEvent <object>(
handler => NetworkInformation.NetworkStatusChanged += new NetworkStatusChangedEventHandler(handler),
handler => NetworkInformation.NetworkStatusChanged -= new NetworkStatusChangedEventHandler(handler),
OnNetworkStatusChanged
);
}
public SearchListView()
{
InitializeComponent();
var dataContextChangedListener =
new WeakEventListener<SearchListView, SearchListView, DependencyPropertyChangedEventArgs>(this, this);
DataContextChanged += dataContextChangedListener.OnEvent;
dataContextChangedListener.OnEventAction = OnDataContextChanged;
dataContextChangedListener.OnDetachAction = OnDetachDataContextChanged;
}
private void RegisterSelectedStopsSourceHandlers(ObservableCollection <TransitStop> collection)
{
if (SelectedStopsSource_CollectionChanged_Listener == null)
{
SelectedStopsSource_CollectionChanged_Listener = new WeakEventListener <StopDetailsPopupAddIn, object, NotifyCollectionChangedEventArgs>(this);
SelectedStopsSource_CollectionChanged_Listener.OnEventAction = (listener, sender, e) => listener.SelectedStopsSource_CollectionChanged(sender, e);
SelectedStopsSource_CollectionChanged_Listener.OnDetachAction = (listener) => listener.OnEventAction = null;
collection.CollectionChanged += SelectedStopsSource_CollectionChanged_Listener.OnEvent;
}
}
private void RegisterStopsSourceHandlers(ObservableCollection <TransitStop> collection)
{
if (StopsSource_CollectionChanged_Listener == null)
{
StopsSource_CollectionChanged_Listener = new WeakEventListener <ShownStopsAddIn, object, NotifyCollectionChangedEventArgs>(this);
StopsSource_CollectionChanged_Listener.OnEventAction = (addin, sender, e) => addin.StopsSource_CollectionChanged(sender, e);
StopsSource_CollectionChanged_Listener.OnDetachAction = (listener) => listener.OnEventAction = null;
collection.CollectionChanged += StopsSource_CollectionChanged_Listener.OnEvent;
}
}
protected override void OnAttached()
{
var _weakEventListener = new WeakEventListener <AnimatedNumberAction, object, EventArgs>(this);
_weakEventListener.OnEventAction = (instance, source, eventArgs) =>
instance.CompositionTarget_Rendering(source, eventArgs);
_weakEventListener.OnDetachAction = (weakEventListener) =>
CompositionTarget.Rendering -= weakEventListener.OnEvent;
CompositionTarget.Rendering += _weakEventListener.OnEvent;
}
public VirtualizedTreeSource(CategoryScale scale, IHierarchyVirtualizationHelper virtualizer)
{
this._root = (Category) new ShadowCategory();
this._scale = scale;
this._virtualizer = virtualizer;
this._leavesChangedWeakEventListener = new WeakEventListener <CategoryScale.VirtualizedTreeSource, object, EventArgs>(this);
this._leavesChangedWeakEventListener.OnEventAction = (Action <CategoryScale.VirtualizedTreeSource, object, EventArgs>)((instance, source, eventArgs) => instance.OnVirtualizerLeavesChanged(source, eventArgs));
this._leavesChangedWeakEventListener.OnDetachAction = (Action <WeakEventListener <CategoryScale.VirtualizedTreeSource, object, EventArgs> >)(weakEventListener => this._virtualizer.LeavesChanged -= new EventHandler(weakEventListener.OnEvent));
this._virtualizer.LeavesChanged += new EventHandler(this._leavesChangedWeakEventListener.OnEvent);
}
public WeakCollectionChangedWrapper( IList sourceList )
{
_innerList = sourceList;
var notifyList = _innerList as INotifyCollectionChanged;
if( notifyList != null )
{
_innerListListener = new WeakEventListener<NotifyCollectionChangedEventArgs>( OnInnerCollectionChanged );
CollectionChangedEventManager.AddListener( notifyList, _innerListListener );
}
}
public ResolveDatabaseObjectsViewModel()
{
DatabaseObjectList = new ObservableCollection<DatabaseObject>();
var weakEventListener = new WeakEventListener<object, ObservableCollection<DatabaseObject>, EventArgs>(this, DatabaseObjectList);
DatabaseObjectList.CollectionChanged += weakEventListener.OnEvent;
weakEventListener.OnEventAction += RaiseChanges;
weakEventListener.OnDetachAction += Static;
}
public void DoesNotLeakWithStaticEventHandlers()
{
var source = new EventSource();
var weakEventListener = WeakEventListener <EventListener, EventSource, ViewModelClosedEventArgs> .SubscribeToWeakGenericEvent(null, source, "PublicEvent", EventListener.OnEventStaticHandler);
Assert.IsTrue(weakEventListener.IsSourceAlive);
Assert.IsFalse(weakEventListener.IsStaticEvent);
Assert.IsFalse(weakEventListener.IsTargetAlive);
Assert.IsTrue(weakEventListener.IsStaticEventHandler);
}
void SubscribeClickEvent(UIElement element)
{
if (element is FrontpageItemButton btn && !btn.ClickEventAttached)
{
WeakEventListener <Button, object, RoutedEventArgs> itemClickListener
= new WeakEventListener <Button, object, RoutedEventArgs>(btn);
itemClickListener.OnEventAction = (_, source, args) => ItemClicked?.Invoke(source, args);
btn.Click += itemClickListener.OnEvent;
btn.ClickEventAttached = true;
}
}
public WeakCollectionChangedWrapper(IList sourceList)
{
_innerList = sourceList;
var notifyList = _innerList as INotifyCollectionChanged;
if (notifyList is not null)
{
_innerListListener = new WeakEventListener <NotifyCollectionChangedEventArgs>(OnInnerCollectionChanged);
CollectionChangedEventManager.AddListener(notifyList, _innerListListener);
}
}
public override void OnApplyTemplate()
{
base.OnApplyTemplate();
KeyboardLayoutVisualStateGroup = GetTemplateChild(VisualStateGroupKeyboardLayoutName) as VisualStateGroup;
QuertyVisualState = GetTemplateChild(VisualStateQuertyName) as VisualState;
NumericVisualState = GetTemplateChild(VisualStateNumericName) as VisualState;
foreach (var partName in TemplatePartNames.Keys)
{
var element = GetTemplateChild(partName) as Button;
if (element != null)
{
element.Command = KeyStrokeCommand;
element.CommandParameter = TemplatePartNames[partName];
element.Content = TemplatePartNames[partName].Name;
//element.TouchUp += new EventHandler<TouchEventArgs>(Button_TouchUp);
var touchUpEventListener = new WeakEventListener <QuertyKeyboard, object, TouchEventArgs>(this);
touchUpEventListener.OnEventAction = (instance, source, eventArgs) => instance.OnButtonTouchUp(source, eventArgs);
touchUpEventListener.OnDetachAction = (weakEventListenerParameter) => element.TouchUp -= weakEventListenerParameter.OnEvent;
element.TouchUp += touchUpEventListener.OnEvent;
var touchDownEventListener = new WeakEventListener <QuertyKeyboard, object, TouchEventArgs>(this);
touchDownEventListener.OnEventAction = (instance, source, eventArgs) => instance.OnButtonTouchDown(source, eventArgs);
touchDownEventListener.OnDetachAction = (weakEventListenerParameter) => element.TouchDown -= weakEventListenerParameter.OnEvent;
element.TouchDown += touchDownEventListener.OnEvent;
//element.Click += new RoutedEventHandler(Button_Click);
//var clickEventListener = new WeakEventListener<QuertyKeyboard, object, RoutedEventArgs>(this);
//clickEventListener.OnEventAction = (instance, source, eventArgs) => instance.OnButtonClicked(source, eventArgs);
//clickEventListener.OnDetachAction = (weakEventListenerParameter) => element.Click -= weakEventListenerParameter.OnEvent;
//element.Click += clickEventListener.OnEvent;
var mouseDownEventListener = new WeakEventListener <QuertyKeyboard, object, MouseButtonEventArgs>(this);
mouseDownEventListener.OnEventAction = (instance, source, eventArgs) => instance.OnButtonMouseDown(source, eventArgs);
mouseDownEventListener.OnDetachAction = (weakEventListenerParameter) => element.MouseDown -= weakEventListenerParameter.OnEvent;
element.PreviewMouseDown += mouseDownEventListener.OnEvent;
var mouseUpEventListener = new WeakEventListener <QuertyKeyboard, object, MouseButtonEventArgs>(this);
mouseUpEventListener.OnEventAction = (instance, source, eventArgs) => instance.OnButtonMouseUp(source, eventArgs);
mouseUpEventListener.OnDetachAction = (weakEventListenerParameter) => element.MouseUp -= weakEventListenerParameter.OnEvent;
element.PreviewMouseUp += mouseUpEventListener.OnEvent;
}
#if DEBUG
else
{
System.Diagnostics.Debug.WriteLine(string.Format("Part not found: {0}", partName));
}
#endif
OnShowCapitalize();
//OnShiftPressed();
}
}
/// <summary>
/// Initializes a new instance of the <see cref="NetworkConnectionStateTrigger"/> class.
/// </summary>
public NetworkConnectionStateTrigger()
{
var weakEvent =
new WeakEventListener<NetworkConnectionStateTrigger, object>(this)
{
OnEventAction = (instance, source) => NetworkInformation_NetworkStatusChanged(source),
OnDetachAction = (instance, weakEventListener) => NetworkInformation.NetworkStatusChanged -= weakEventListener.OnEvent
};
NetworkInformation.NetworkStatusChanged += weakEvent.OnEvent;
UpdateState();
}
public DiagramView()
{
InitializeComponent();
KeyDown += DiagramPanel_KeyDown;
var weakListener = new WeakEventListener<DiagramView, DiagramView, RoutedEventArgs>(this, this);
this.Loaded += weakListener.OnEvent;
weakListener.OnEventAction += OnDiagramViewLoaded;
weakListener.OnDetachAction += Static;
}
public void HandleWeakEvent()
{
Dummy dummy = new Dummy();
bool weakEventReceived = false;
var listener = new WeakEventListener<PropertyChangedEventArgs>((sender, eventArgs) => weakEventReceived = true);
PropertyChangedEventManager.AddListener(dummy, listener, String.Empty);
dummy.RaisePropertyChanged();
Assert.IsTrue(weakEventReceived);
weakEventReceived = false;
}
public ScrollOnTouchAction()
{
//CompositionTarget.Rendering += new EventHandler(CompositionTarget_Rendering);
var renderingEventListener = new WeakEventListener <ScrollOnTouchAction, object, EventArgs>(this);
renderingEventListener.OnEventAction = (instance, source, eventArgs) =>
instance.CompositionTarget_Rendering(source, eventArgs);
renderingEventListener.OnDetachAction = (weakEventListenerParameter) =>
CompositionTarget.Rendering -= weakEventListenerParameter.OnEvent;
CompositionTarget.Rendering += renderingEventListener.OnEvent;
}
public void HandleWeakEvent()
{
Dummy dummy = new Dummy();
bool weakEventReceived = false;
var listener = new WeakEventListener <PropertyChangedEventArgs>((sender, eventArgs) => weakEventReceived = true);
PropertyChangedEventManager.AddListener(dummy, listener, String.Empty);
dummy.RaisePropertyChanged();
Assert.IsTrue(weakEventReceived);
weakEventReceived = false;
}
public MessageListener(InteractionMessenger messenger)
{
Dispatcher = Dispatcher.CurrentDispatcher;
_source = new WeakReference <InteractionMessenger>(messenger);
_listener = new WeakEventListener <EventHandler <InteractionMessageRaisedEventArgs>, InteractionMessageRaisedEventArgs>
(
h => h,
h => messenger.Raised += h,
h => messenger.Raised -= h,
MessageReceived
);
}
/// <summary>
/// Initializes a new instance of the <see cref="TableDefinition" /> class.
/// </summary>
public TableDefinition()
{
FieldList = new List<TableFieldDefinition>();
var relationships = new ObservableCollection<TableRelationshipDefinition>();
Relationships = relationships;
var weakListenerKeyDown = new WeakEventListener<TableDefinition, ObservableCollection<TableRelationshipDefinition>, NotifyCollectionChangedEventArgs>(this, relationships);
relationships.CollectionChanged += weakListenerKeyDown.OnEvent;
weakListenerKeyDown.OnEventAction += RelationshipsCollectionChanged;
weakListenerKeyDown.OnDetachAction += Static;
}
/// <summary>
/// Initializes a new instance of the <see cref="ServiceTypeInfo"/> class.
/// </summary>
/// <param name="type">The type.</param>
public ServiceTypeInfo(ServiceExposedTypeEdit type)
{
_nameExpression = () => type.Name;
_guidExpression = () => type.Guid;
var propertyChangedListener =
new WeakEventListener<ServiceTypeInfo, ServiceExposedTypeEdit, PropertyChangedEventArgs>(this, type);
type.PropertyChanged += propertyChangedListener.OnEvent;
propertyChangedListener.OnEventAction += OnTypePropertyChanged;
propertyChangedListener.OnDetachAction += Static;
}
public void ShouldStoreEventHandler()
{
bool weakEventReceived = false;
var listener = new WeakEventListener<PropertyChangedEventArgs>((sender, eventArgs) => weakEventReceived = true);
// Check whether EventHandler was stored correctly.
Assert.IsNotNull(listener.EventHandler);
listener.EventHandler(null, null);
Assert.IsTrue(weakEventReceived);
weakEventReceived = false;
}
private static void OnDataContextChanged(SearchListView view, object sender, DependencyPropertyChangedEventArgs args)
{
var dc = args.NewValue as SearchListViewModel;
if (dc == null)
return;
var selectedChangedListener =
new WeakEventListener<SearchListView, SearchListViewModel, SelectedChangedEventArgs>(view, dc);
dc.SelectedChanged += selectedChangedListener.OnEvent;
selectedChangedListener.OnEventAction = OnSelectedChanged;
selectedChangedListener.OnDetachAction = OnDetachSelectedChanged;
}
public void ShouldStoreEventHandler()
{
bool weakEventReceived = false;
var listener = new WeakEventListener <PropertyChangedEventArgs>((sender, eventArgs) => weakEventReceived = true);
// Check whether EventHandler was stored correctly.
Assert.IsNotNull(listener.EventHandler);
listener.EventHandler(null, null);
Assert.IsTrue(weakEventReceived);
weakEventReceived = false;
}
/// <summary>
/// Adds the event handlers.
/// </summary>
private void AddEventHandlers()
{
var propertyChangedListener = new WeakEventListener<BusinessObjectIsValidListener, BusinessBase, PropertyChangedEventArgs>(this, Model);
Model.PropertyChanged += propertyChangedListener.OnEvent;
propertyChangedListener.OnEventAction = OnModelPropertyChanged;
propertyChangedListener.OnDetachAction = Static;
var childChangedListener = new WeakEventListener<BusinessObjectIsValidListener, BusinessBase, ChildChangedEventArgs>(this, Model);
Model.ChildChanged += childChangedListener.OnEvent;
childChangedListener.OnEventAction = OnModelChildChanged;
childChangedListener.OnDetachAction = Static;
}
private static void OnValuePropertyChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
var obj = (IsNullOrEmptyStateTrigger)d;
var val = e.NewValue;
obj.IsActive = IsNullOrEmpty(val);
if (val == null)
return;
// Try to listen for various notification events
// Starting with INorifyCollectionChanged
var valNotifyCollection = val as INotifyCollectionChanged;
if (valNotifyCollection != null)
{
var weakEvent = new WeakEventListener<INotifyCollectionChanged, object, NotifyCollectionChangedEventArgs>(valNotifyCollection)
{
OnEventAction = (instance, source, args) => obj.IsActive = IsNullOrEmpty(instance),
OnDetachAction = (instance, weakEventListener) => instance.CollectionChanged -= weakEventListener.OnEvent
};
valNotifyCollection.CollectionChanged += weakEvent.OnEvent;
return;
}
// Not INotifyCollectionChanged, try IObservableVector
var valObservableVector = val as IObservableVector<object>;
if (valObservableVector != null)
{
var weakEvent = new WeakEventListener<IObservableVector<object>, object, IVectorChangedEventArgs>(valObservableVector)
{
OnEventAction = (instance, source, args) => obj.IsActive = IsNullOrEmpty(instance),
OnDetachAction = (instance, weakEventListener) => instance.VectorChanged -= weakEventListener.OnEvent
};
valObservableVector.VectorChanged += weakEvent.OnEvent;
return;
}
// Not INotifyCollectionChanged, try IObservableMap
var valObservableMap = val as IObservableMap<object,object>;
if (valObservableMap != null)
{
var weakEvent = new WeakEventListener<IObservableMap<object, object>, object, IMapChangedEventArgs<object>>(valObservableMap)
{
OnEventAction = (instance, source, args) => obj.IsActive = IsNullOrEmpty(instance),
OnDetachAction = (instance, weakEventListener) => instance.MapChanged -= weakEventListener.OnEvent
};
valObservableMap.MapChanged += weakEvent.OnEvent;
}
}
/// <summary>
/// Initializes a new instance of the <see cref="AdaptiveTrigger"/> class.
/// </summary>
public AdaptiveTrigger()
{
var window = CoreApplication.GetCurrentView()?.CoreWindow;
if (window != null)
{
var weakEvent = new WeakEventListener<AdaptiveTrigger, CoreWindow, WindowSizeChangedEventArgs>(this)
{
OnEventAction = (instance, s, e) => OnCoreWindowOnSizeChanged(s, e),
OnDetachAction = (instance, weakEventListener) => window.SizeChanged -= weakEventListener.OnEvent
};
window.SizeChanged += weakEvent.OnEvent;
}
}
public MasterDetailStateTrigger()
{
if (!Windows.ApplicationModel.DesignMode.DesignModeEnabled)
{
var weakEvent = new WeakEventListener<MasterDetailStateTrigger, ApplicationView, object>(this)
{
OnEventAction = (instance, source, eventArgs) => MasterDetailStatetateTrigger_MasterDetailStateChanged(source, eventArgs),
OnDetachAction = (instance, weakEventListener) => ApplicationView.GetForCurrentView().VisibleBoundsChanged -= weakEventListener.OnEvent
};
ApplicationView.GetForCurrentView().VisibleBoundsChanged += weakEvent.OnEvent;
}
}
/// <summary>
/// Initializes a new instance of the <see cref="OrientationStateTrigger"/> class.
/// </summary>
public OrientationStateTrigger()
{
if (!Windows.ApplicationModel.DesignMode.DesignModeEnabled)
{
var weakEvent =
new WeakEventListener<OrientationStateTrigger, DisplayInformation, object>(this)
{
OnEventAction = (instance, source, eventArgs) => OrientationStateTrigger_OrientationChanged(source, eventArgs),
OnDetachAction = (instance, weakEventListener) => DisplayInformation.GetForCurrentView().OrientationChanged -= weakEventListener.OnEvent
};
DisplayInformation.GetForCurrentView().OrientationChanged += weakEvent.OnEvent;
}
}
public DocumentationStepView()
{
InitializeComponent();
var contextMenu = new ContextMenu();
var contextMenuShowingListener = new WeakEventListener<DocumentationStepView, ContextMenu, ContextMenuEventArgs>(this, contextMenu);
contextMenu.Showing += contextMenuShowingListener.OnEvent;
contextMenuShowingListener.OnEventAction += ContextMenu_Showing;
contextMenuShowingListener.OnDetachAction += Static;
HTMLRichTextBox.ContextMenu = contextMenu;
Loaded += DocumentationStepView_Loaded;
Unloaded += OnUnloaded;
}
/// <summary>
/// Initializes a new instance of the <see cref="UserInteractionModeTrigger"/> class.
/// </summary>
public UserInteractionModeTrigger()
{
if (!Windows.ApplicationModel.DesignMode.DesignModeEnabled)
{
var weakEvent =
new WeakEventListener<UserInteractionModeTrigger, object, WindowSizeChangedEventArgs>(this)
{
OnEventAction = (instance, source, eventArgs) => UserInteractionModeTrigger_SizeChanged(source, eventArgs),
OnDetachAction = (instance, weakEventListener) => Window.Current.SizeChanged -= weakEventListener.OnEvent
};
Window.Current.SizeChanged += weakEvent.OnEvent;
UpdateTrigger(InteractionMode);
}
}
public StopPopupControl()
{
this.InitializeComponent();
MainGrid.DataContext = VM;
VM.PropertyChanged += VM_PropertyChanged;
RefreshMainGridWidth();
//ExpandButton.SetBinding(Button.CommandProperty, new Binding() { Source = this, Path = new PropertyPath("ExpandCommand") });
//CompressButton.SetBinding(Button.CommandProperty, new Binding() { Source = this, Path = new PropertyPath("CompressCommand") });
//CloseButton.SetBinding(Button.CommandProperty, new Binding() { Source = this, Path = new PropertyPath("CloseCommand") });
//RegisterPropertyChangedCallback(WidthProperty, WidthChanged);
ShownArrivalsBinding = new CompositeCollectionBinding<RealTimeArrival, string>(ShownArrivals);
WeakEventListener<StopPopupControl, object, NotifyCollectionChangedEventArgs> childrenListener = new WeakEventListener<StopPopupControl, object, NotifyCollectionChangedEventArgs>(this);
childrenListener.OnEventAction = (t, s, e) => t.Children_CollectionChanged(s, e);
VM.Children.CollectionChanged += childrenListener.OnEvent;
}
public void AllowsGarbageCollection()
{
Dummy dummy = new Dummy();
bool weakEventReceived = false;
var listener = new WeakEventListener<PropertyChangedEventArgs>((sender, eventArgs) => weakEventReceived = true);
PropertyChangedEventManager.AddListener(dummy, listener, String.Empty);
WeakReference weakReference = new WeakReference(listener);
listener = null;
GC.Collect();
Assert.IsFalse(weakReference.IsAlive);
Assert.IsFalse(weakEventReceived);
}
private void OnDataContextChanged(object sender, DependencyPropertyChangedEventArgs args)
{
var newDc = args.NewValue as IFieldViewModel;
if (newDc == null)
return;
DetachDisposedListener();
_disposedListener = new WeakEventListener<DynamicItemsSelectorView, IFieldViewModel, EventArgs>(this, newDc)
{
OnEventAction = OnDataContextDisposed,
OnDetachAction = OnDetachDataContextDisposed
};
newDc.Disposed += _disposedListener.OnEvent;
}
/// <summary>
/// Initializes a new instance of the <see cref="AdaptiveTrigger"/> class.
/// </summary>
public AdaptiveTrigger()
{
this.RegisterPropertyChangedCallback(MinWindowHeightProperty, OnMinWindowHeightPropertyChanged);
this.RegisterPropertyChangedCallback(MinWindowWidthProperty, OnMinWindowWidthPropertyChanged);
var window = CoreApplication.GetCurrentView()?.CoreWindow;
if (window != null)
{
var weakEvent = new WeakEventListener<AdaptiveTrigger, CoreWindow, WindowSizeChangedEventArgs>(this)
{
OnEventAction = (instance, s, e) => OnCoreWindowOnSizeChanged(s, e),
OnDetachAction = (instance, weakEventListener) => window.SizeChanged -= weakEventListener.OnEvent
};
window.SizeChanged += weakEvent.OnEvent;
}
}
/// <summary>
/// Initializes the specified model.
/// </summary>
/// <param name="model">The model.</param>
/// <param name="processEdit">The process edit.</param>
/// <param name="fieldEdit">The field edit.</param>
public void Init(ChecklistSettingsStepEdit model, ProcessEdit processEdit, FieldEdit fieldEdit)
{
StepModel = model;
ProcessEdit = processEdit;
FieldEdit = fieldEdit;
FilterGuid = model.FilterGuid ?? Guid.Empty;
FilterDefinition = model.FilterDefinition;
var weakListener = new WeakEventListener<ChecklistFilterViewModel, ChecklistSettingsStepEdit, PropertyChangedEventArgs>(this, model);
model.PropertyChanged += weakListener.OnEvent;
weakListener.OnEventAction += OnReqStepPropertyChanged;
weakListener.OnDetachAction += Static;
LoadProcessInfo(model);
}
