/// <summary>
/// Initializes a new instance of the <see cref="DirectPropertyBase{TValue}"/> class.
/// </summary>
/// <param name="source">The property to copy.</param>
/// <param name="ownerType">The new owner type.</param>
/// <param name="metadata">Optional overridden metadata.</param>
protected DirectPropertyBase(
DirectPropertyBase <TValue> source,
Type ownerType,
AvaloniaPropertyMetadata metadata)
: base(source, ownerType, metadata)
{
}
/// <summary>
/// Initializes a new instance of the <see cref="AvaloniaProperty"/> class.
/// </summary>
/// <param name="source">The direct property to copy.</param>
/// <param name="ownerType">The new owner type.</param>
/// <param name="metadata">Optional overridden metadata.</param>
protected AvaloniaProperty(
AvaloniaProperty source,
Type ownerType,
AvaloniaPropertyMetadata metadata)
{
Contract.Requires <ArgumentNullException>(source != null);
Contract.Requires <ArgumentNullException>(ownerType != null);
_metadata = new Dictionary <Type, AvaloniaPropertyMetadata>();
Name = source.Name;
PropertyType = source.PropertyType;
OwnerType = ownerType;
Notifying = source.Notifying;
Id = source.Id;
_defaultMetadata = source._defaultMetadata;
// Properties that have different owner can't use fast path for metadata.
_hasMetadataOverrides = true;
if (metadata != null)
{
_metadata.Add(ownerType, metadata);
}
}
/// <summary>
/// Initializes a new instance of the <see cref="AvaloniaProperty"/> class.
/// </summary>
/// <param name="name">The name of the property.</param>
/// <param name="valueType">The type of the property's value.</param>
/// <param name="ownerType">The type of the class that registers the property.</param>
/// <param name="metadata">The property metadata.</param>
/// <param name="notifying">A <see cref="Notifying"/> callback.</param>
protected AvaloniaProperty(
string name,
Type valueType,
Type ownerType,
AvaloniaPropertyMetadata metadata,
Action <IAvaloniaObject, bool> notifying = null)
{
Contract.Requires <ArgumentNullException>(name != null);
Contract.Requires <ArgumentNullException>(valueType != null);
Contract.Requires <ArgumentNullException>(ownerType != null);
Contract.Requires <ArgumentNullException>(metadata != null);
if (name.Contains("."))
{
throw new ArgumentException("'name' may not contain periods.");
}
_metadata = new Dictionary <Type, AvaloniaPropertyMetadata>();
Name = name;
PropertyType = valueType;
OwnerType = ownerType;
Notifying = notifying;
Id = s_nextId++;
_metadata.Add(ownerType, metadata);
_defaultMetadata = metadata;
}
/// <summary>
/// Initializes a new instance of the <see cref="DirectPropertyBase{TValue}"/> class.
/// </summary>
/// <param name="name">The name of the property.</param>
/// <param name="ownerType">The type of the class that registers the property.</param>
/// <param name="metadata">The property metadata.</param>
protected DirectPropertyBase(
string name,
Type ownerType,
AvaloniaPropertyMetadata metadata)
: base(name, ownerType, metadata)
{
}
protected DirectPropertyBase(
AvaloniaProperty source,
Type ownerType,
AvaloniaPropertyMetadata metadata)
: this(source as DirectPropertyBase <TValue> ?? throw new InvalidOperationException(), ownerType, metadata)
{
}
/// <summary>
/// Initializes a new instance of the <see cref="AvaloniaProperty"/> class.
/// </summary>
/// <param name="name">The name of the property.</param>
/// <param name="valueType">The type of the property's value.</param>
/// <param name="ownerType">The type of the class that registers the property.</param>
/// <param name="metadata">The property metadata.</param>
/// <param name="notifying">A <see cref="Notifying"/> callback.</param>
protected AvaloniaProperty(
string name,
Type valueType,
Type ownerType,
AvaloniaPropertyMetadata metadata,
Action <IAvaloniaObject, bool>?notifying = null)
{
_ = name ?? throw new ArgumentNullException(nameof(name));
if (name.Contains("."))
{
throw new ArgumentException("'name' may not contain periods.");
}
_metadata = new Dictionary <Type, AvaloniaPropertyMetadata>();
Name = name;
PropertyType = valueType ?? throw new ArgumentNullException(nameof(valueType));
OwnerType = ownerType ?? throw new ArgumentNullException(nameof(ownerType));
Notifying = notifying;
Id = s_nextId++;
_metadata.Add(ownerType, metadata ?? throw new ArgumentNullException(nameof(metadata)));
_defaultMetadata = metadata;
}
/// <summary>
/// Initializes a new instance of the <see cref="AvaloniaProperty{TValue}"/> class.
/// </summary>
/// <param name="source">The property to copy.</param>
/// <param name="ownerType">The new owner type.</param>
/// <param name="metadata">Optional overridden metadata.</param>
protected AvaloniaProperty(
AvaloniaProperty <TValue> source,
Type ownerType,
AvaloniaPropertyMetadata metadata)
: base(source, ownerType, metadata)
{
_changed = source._changed;
}
/// <summary>
/// Initializes a new instance of the <see cref="AvaloniaProperty{TValue}"/> class.
/// </summary>
/// <param name="name">The name of the property.</param>
/// <param name="ownerType">The type of the class that registers the property.</param>
/// <param name="metadata">The property metadata.</param>
/// <param name="notifying">A <see cref="AvaloniaProperty.Notifying"/> callback.</param>
protected AvaloniaProperty(
string name,
Type ownerType,
AvaloniaPropertyMetadata metadata,
Action <IAvaloniaObject, bool> notifying = null)
: base(name, typeof(TValue), ownerType, metadata, notifying)
{
_changed = new Subject <AvaloniaPropertyChangedEventArgs <TValue> >();
}
/// <summary>
/// Merges the metadata with the base metadata.
/// </summary>
/// <param name="baseMetadata">The base metadata to merge.</param>
/// <param name="property">The property to which the metadata is being applied.</param>
public virtual void Merge(
AvaloniaPropertyMetadata baseMetadata,
AvaloniaProperty property)
{
if (_defaultBindingMode == BindingMode.Default)
{
_defaultBindingMode = baseMetadata.DefaultBindingMode;
}
}
/// <inheritdoc/>
public override void Merge(AvaloniaPropertyMetadata baseMetadata, AvaloniaProperty property)
{
base.Merge(baseMetadata, property);
if (baseMetadata is StyledPropertyMetadata <TValue> src)
{
if (!_defaultValue.HasValue)
{
_defaultValue = src.DefaultValue;
}
if (CoerceValue == null)
{
CoerceValue = src.CoerceValue;
}
}
}
/// <summary>
/// Overrides the metadata for the property on the specified type.
/// </summary>
/// <param name="type">The type.</param>
/// <param name="metadata">The metadata.</param>
protected void OverrideMetadata(Type type, AvaloniaPropertyMetadata metadata)
{
Contract.Requires <ArgumentNullException>(type != null);
Contract.Requires <ArgumentNullException>(metadata != null);
if (_metadata.ContainsKey(type))
{
throw new InvalidOperationException(
$"Metadata is already set for {Name} on {type}.");
}
var baseMetadata = GetMetadata(type);
metadata.Merge(baseMetadata, this);
_metadata.Add(type, metadata);
_metadataCache.Clear();
_hasMetadataOverrides = true;
}
/// <inheritdoc/>
public override void Merge(AvaloniaPropertyMetadata baseMetadata, AvaloniaProperty property)
{
base.Merge(baseMetadata, property);
var src = baseMetadata as DirectPropertyMetadata <TValue>;
if (src != null)
{
if (UnsetValue == null)
{
UnsetValue = src.UnsetValue;
}
if (EnableDataValidation == null)
{
EnableDataValidation = src.EnableDataValidation;
}
}
}
/// <summary>
/// Initializes a new instance of the <see cref="AvaloniaProperty"/> class.
/// </summary>
/// <param name="source">The direct property to copy.</param>
/// <param name="ownerType">The new owner type.</param>
/// <param name="metadata">Optional overridden metadata.</param>
protected AvaloniaProperty(
AvaloniaProperty source,
Type ownerType,
AvaloniaPropertyMetadata?metadata)
{
_metadata = new Dictionary <Type, AvaloniaPropertyMetadata>();
Name = source?.Name ?? throw new ArgumentNullException(nameof(source));
PropertyType = source.PropertyType;
OwnerType = ownerType ?? throw new ArgumentNullException(nameof(ownerType));
Notifying = source.Notifying;
Id = source.Id;
_defaultMetadata = source._defaultMetadata;
// Properties that have different owner can't use fast path for metadata.
_hasMetadataOverrides = true;
if (metadata != null)
{
_metadata.Add(ownerType, metadata);
}
}