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MapBase dependency properties

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ClemensFischer 2024-05-21 13:51:10 +02:00
parent abe3bb75f9
commit 74f4e0176b
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68
MapControl/WPF/DependencyPropertyHelper.WPF.cs Normal file
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// XAML Map Control - https://github.com/ClemensFischer/XAML-Map-Control
// Copyright © 2024 Clemens Fischer
// Licensed under the Microsoft Public License (Ms-PL)
using System;
using System.Windows;
namespace MapControl
{
public static class DependencyPropertyHelper
{
public static DependencyProperty Register<TOwner, TValue>(
string name,
TValue defaultValue = default,
bool bindTwoWayByDefault = false,
Action<TOwner, TValue, TValue> changed = null,
Func<TOwner, TValue, TValue> coerce = null)
where TOwner : DependencyObject
{
var metadata = new FrameworkPropertyMetadata
{
DefaultValue = defaultValue,
BindsTwoWayByDefault = bindTwoWayByDefault
};
if (changed != null)
{
metadata.PropertyChangedCallback = (o, e) => changed((TOwner)o, (TValue)e.OldValue, (TValue)e.NewValue);
}
if (coerce != null)
{
metadata.CoerceValueCallback = (o, v) => coerce((TOwner)o, (TValue)v);
}
return DependencyProperty.Register(name, typeof(TValue), typeof(TOwner), metadata);
}
public static DependencyProperty RegisterAttached<TOwner, TValue>(
string name,
TValue defaultValue = default,
bool inherits = false,
Action<FrameworkElement, TValue, TValue> changed = null)
where TOwner : DependencyObject
{
var metadata = new FrameworkPropertyMetadata
{
DefaultValue = defaultValue,
Inherits = inherits
};
if (changed != null)
{
metadata.PropertyChangedCallback = (o, e) => changed((FrameworkElement)o, (TValue)e.OldValue, (TValue)e.NewValue);
}
return DependencyProperty.RegisterAttached(name, typeof(TValue), typeof(TOwner), metadata);
}
public static DependencyPropertyKey RegisterReadOnly<TOwner, TValue>(
string name,
TValue defaultValue = default)
where TOwner : DependencyObject
{
return DependencyProperty.RegisterReadOnly(name, typeof(TValue), typeof(TOwner), new PropertyMetadata(defaultValue));
}
}
}