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);
}
}
}
/// <summary>
/// Initializes a new instance of the <see cref="TemplatePicker"/> class.
/// </summary>
public TemplatePicker()
{
DefaultStyleKey = typeof(TemplatePicker);
_featureLayerPropertyChangedListeners = new DependencyPropertyChangedListeners<TemplatePicker>(this)
{
OnEventAction = (instance, source, eventArgs) => instance.OnLayerPropertyChanged(source, eventArgs)
};
}
/// <summary>
/// Initializes a new instance of the <see cref="TemplatePicker"/> class.
/// </summary>
public TemplatePicker()
{
DefaultStyleKey = typeof(TemplatePicker);
_featureLayerPropertyChangedListeners = new DependencyPropertyChangedListeners <TemplatePicker>(this)
{
OnEventAction = (instance, source, eventArgs) => instance.OnLayerPropertyChanged(source, eventArgs)
};
}
/// <summary>
/// Initializes a new instance of the <see cref="Attribution"/> class.
/// </summary>
public Attribution()
{
#if NETFX_CORE
DefaultStyleKey = typeof(Attribution);
#endif
_layerPropertyChangedListeners = new DependencyPropertyChangedListeners <Attribution>(this)
{
OnEventAction = (instance, source, eventArgs) => instance.Layer_PropertyChanged(source, eventArgs)
};
}
public LegendTree()
{
LayerItemsOptions = new LayerItemsOpts(returnMapLayerItems: false, returnGroupLayerItems: false,
returnLegendItems: false,
showOnlyVisibleLayers: true, reverseLayersOrder: false);
Attach(this);
_layerPropertyChangedListeners = new DependencyPropertyChangedListeners <LegendTree>(this)
{
OnEventAction = (instance, source, eventArgs) => instance.Layer_PropertyChanged(source, eventArgs)
};
}
/// <summary>
/// Initializes a new instance of the <see cref="Attribution"/> class.
/// </summary>
public Attribution()
{
#if NETFX_CORE
DefaultStyleKey = typeof(Attribution);
#endif
_layerPropertyChangedListeners = new DependencyPropertyChangedListeners<Attribution>(this)
{
OnEventAction = (instance, source, eventArgs) => instance.Layer_PropertyChanged(source, eventArgs)
};
}
public LegendTree()
{
LayerItemsOptions = new LayerItemsOpts(returnMapLayerItems: false, returnGroupLayerItems: false,
returnLegendItems: false,
showOnlyVisibleLayers: true, reverseLayersOrder: false);
Attach(this);
_layerPropertyChangedListeners = new DependencyPropertyChangedListeners<LegendTree>(this)
{
OnEventAction = (instance, source, eventArgs) => instance.Layer_PropertyChanged(source, eventArgs)
};
}
private void DetachLayersHandler()
{
if (_layersWeakEventListener != null)
{
_layersWeakEventListener.Detach();
_layersWeakEventListener = null;
}
if (_featureLayerPropertyChangedListeners != null)
{
_featureLayerPropertyChangedListeners.DetachAll();
_featureLayerPropertyChangedListeners = null;
}
}
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 void DetachLayersHandler()
{
if (_layersWeakEventListener != null)
{
_layersWeakEventListener.Detach();
_layersWeakEventListener = null;
}
if (_featureLayerPropertyChangedListeners != null)
{
_featureLayerPropertyChangedListeners.DetachAll();
_featureLayerPropertyChangedListeners = null;
}
}
