/// <summary>
/// Initializes a new instance of the <see cref="PerspexObject"/> class.
/// </summary>
public PerspexObject()
{
_propertyLog = Log.ForContext(new[]
{
new PropertyEnricher("Area", "Property"),
new PropertyEnricher("SourceContext", GetType()),
new PropertyEnricher("Id", GetHashCode()),
});
foreach (var property in PerspexPropertyRegistry.Instance.GetRegistered(this))
{
object value = property.IsDirect ?
property.Getter(this) :
property.GetDefaultValue(GetType());
var e = new PerspexPropertyChangedEventArgs(
this,
property,
PerspexProperty.UnsetValue,
value,
BindingPriority.Unset);
property.NotifyInitialized(e);
}
}
/// <summary>
/// Raises the <see cref="PropertyChanged"/> event.
/// </summary>
/// <param name="property">The property that has changed.</param>
/// <param name="oldValue">The old property value.</param>
/// <param name="newValue">The new property value.</param>
/// <param name="priority">The priority of the binding that produced the value.</param>
private void RaisePropertyChanged(
PerspexProperty property,
object oldValue,
object newValue,
BindingPriority priority)
{
Contract.Requires <NullReferenceException>(property != null);
PerspexPropertyChangedEventArgs e = new PerspexPropertyChangedEventArgs(
this,
property,
oldValue,
newValue,
priority);
OnPropertyChanged(e);
property.NotifyChanged(e);
if (PropertyChanged != null)
{
PropertyChanged(this, e);
}
if (_inpcChanged != null)
{
PropertyChangedEventArgs e2 = new PropertyChangedEventArgs(property.Name);
_inpcChanged(this, e2);
}
}
private static void AffectsRenderInvalidate(PerspexPropertyChangedEventArgs e)
{
Visual visual = e.Sender as Visual;
if (visual != null)
{
visual.InvalidateVisual();
}
}
/// <summary>
/// Called when a property is changed on the current <see cref="InheritanceParent"/>.
/// </summary>
/// <param name="sender">The event sender.</param>
/// <param name="e">The event args.</param>
/// <remarks>
/// Checks for changes in an inherited property value.
/// </remarks>
private void ParentPropertyChanged(object sender, PerspexPropertyChangedEventArgs e)
{
Contract.Requires <ArgumentNullException>(e != null);
if (e.Property.Inherits && !this.IsSet(e.Property))
{
this.RaisePropertyChanged(e.Property, e.OldValue, e.NewValue);
}
}
/// <summary>
/// Observer method for <see cref="AddClassHandler{TTarget}(IObservable{PerspexPropertyChangedEventArgs},
/// Func{TTarget, Action{PerspexPropertyChangedEventArgs}})"/>.
/// </summary>
/// <typeparam name="TTarget">The sender type to accept.</typeparam>
/// <param name="e">The event args.</param>
/// <param name="handler">Given a TTarget, returns the handler.</param>
private static void SubscribeAdapter <TTarget>(
PerspexPropertyChangedEventArgs e,
Func <TTarget, Action <PerspexPropertyChangedEventArgs> > handler)
where TTarget : class
{
var target = e.Sender as TTarget;
if (target != null)
{
handler(target)(e);
}
}
/// <summary>
/// Raises the <see cref="PropertyChanged"/> event.
/// </summary>
/// <param name="property">The property that has changed.</param>
/// <param name="oldValue">The old property value.</param>
/// <param name="newValue">The new property value.</param>
private void RaisePropertyChanged(PerspexProperty property, object oldValue, object newValue)
{
Contract.Requires <NullReferenceException>(property != null);
if (this.PropertyChanged != null)
{
PerspexPropertyChangedEventArgs e = new PerspexPropertyChangedEventArgs(this, property, oldValue, newValue);
property.NotifyChanged(e);
this.PropertyChanged(this, e);
}
if (this.inpcChanged != null)
{
PropertyChangedEventArgs e = new PropertyChangedEventArgs(property.Name);
this.inpcChanged(this, e);
}
}
/// <summary>
/// Raises the <see cref="PropertyChanged"/> event.
/// </summary>
/// <param name="property">The property that has changed.</param>
/// <param name="oldValue">The old property value.</param>
/// <param name="newValue">The new property value.</param>
/// <param name="priority">The priority of the binding that produced the value.</param>
protected void RaisePropertyChanged(
PerspexProperty property,
object oldValue,
object newValue,
BindingPriority priority)
{
Contract.Requires <ArgumentNullException>(property != null);
VerifyAccess();
PerspexPropertyChangedEventArgs e = new PerspexPropertyChangedEventArgs(
this,
property,
oldValue,
newValue,
priority);
if (property.Notifying != null)
{
property.Notifying(this, true);
}
try
{
OnPropertyChanged(e);
property.NotifyChanged(e);
if (PropertyChanged != null)
{
PropertyChanged(this, e);
}
if (_inpcChanged != null)
{
PropertyChangedEventArgs e2 = new PropertyChangedEventArgs(property.Name);
_inpcChanged(this, e2);
}
}
finally
{
if (property.Notifying != null)
{
property.Notifying(this, false);
}
}
}
/// <summary>
/// Initializes a new instance of the <see cref="PerspexObject"/> class.
/// </summary>
public PerspexObject()
{
foreach (var property in PerspexPropertyRegistry.Instance.GetRegistered(this))
{
object value = property.IsDirect ?
((IDirectPropertyAccessor)property).GetValue(this) :
((IStyledPropertyAccessor)property).GetDefaultValue(GetType());
var e = new PerspexPropertyChangedEventArgs(
this,
property,
PerspexProperty.UnsetValue,
value,
BindingPriority.Unset);
property.NotifyInitialized(e);
}
}
/// <summary>
/// Initializes a new instance of the <see cref="PerspexObject"/> class.
/// </summary>
public PerspexObject()
{
foreach (var p in this.GetAllValues())
{
var priority = p.PriorityValue != null ?
(BindingPriority)p.PriorityValue.ValuePriority :
BindingPriority.LocalValue;
var e = new PerspexPropertyChangedEventArgs(
this,
p.Property,
PerspexProperty.UnsetValue,
p.CurrentValue,
priority);
p.Property.NotifyInitialized(e);
}
}
/// <summary>
/// Initializes a new instance of the <see cref="PerspexObject"/> class.
/// </summary>
public PerspexObject()
{
_propertyLog = Log.ForContext(new[]
{
new PropertyEnricher("Area", "Property"),
new PropertyEnricher("SourceContext", GetType()),
new PropertyEnricher("Id", GetHashCode()),
});
foreach (var property in GetRegisteredProperties())
{
var e = new PerspexPropertyChangedEventArgs(
this,
property,
PerspexProperty.UnsetValue,
property.GetDefaultValue(GetType()),
BindingPriority.Unset);
property.NotifyInitialized(e);
}
}
private static void RenderTransformChanged(PerspexPropertyChangedEventArgs e)
{
var sender = e.Sender as Visual;
if (sender != null)
{
var oldValue = e.OldValue as Transform;
var newValue = e.NewValue as Transform;
if (oldValue != null)
{
oldValue.Changed -= sender.RenderTransformChanged;
}
if (newValue != null)
{
newValue.Changed += sender.RenderTransformChanged;
}
sender.InvalidateVisual();
}
}
/// <summary>
/// Called when a visual's <see cref="RenderTransform"/> changes.
/// </summary>
/// <param name="e">The event args.</param>
private static void RenderTransformChanged(PerspexPropertyChangedEventArgs e)
{
var sender = e.Sender as Visual;
if (sender?.VisualRoot != null)
{
var oldValue = e.OldValue as Transform;
var newValue = e.NewValue as Transform;
if (oldValue != null)
{
oldValue.Changed -= sender.RenderTransformChanged;
}
if (newValue != null)
{
newValue.Changed += sender.RenderTransformChanged;
}
sender.InvalidateVisual();
}
}
/// <summary>
/// Called when a property changes that should invalidate the visual.
/// </summary>
/// <param name="e">The event args.</param>
private static void AffectsRenderInvalidate(PerspexPropertyChangedEventArgs e)
{
(e.Sender as Visual)?.InvalidateVisual();
}
/// <summary>
/// Called when a perspex property changes on the object.
/// </summary>
/// <param name="e">The event arguments.</param>
protected virtual void OnPropertyChanged(PerspexPropertyChangedEventArgs e)
{
}
/// <summary>
/// Notifies the <see cref="Initialized"/> observable.
/// </summary>
/// <param name="e">The observable arguments.</param>
internal void NotifyInitialized(PerspexPropertyChangedEventArgs e)
{
_initialized.OnNext(e);
}
/// <summary>
/// Called when a property changes that should invalidate the visual.
/// </summary>
/// <param name="e">The event args.</param>
private static void AffectsRenderInvalidate(PerspexPropertyChangedEventArgs e)
{
Visual visual = e.Sender as Visual;
if (visual != null)
{
visual.InvalidateVisual();
}
}
/// <summary>
/// Notifies the <see cref="Changed"/> observable.
/// </summary>
/// <param name="e">The observable arguments.</param>
internal void NotifyChanged(PerspexPropertyChangedEventArgs e)
{
_changed.OnNext(e);
}
/// <summary>
/// Called when a property changes that should invalidate the visual.
/// </summary>
/// <param name="e">The event args.</param>
private static void AffectsRenderInvalidate(PerspexPropertyChangedEventArgs e)
{
(e.Sender as Visual)?.InvalidateVisual();
}
