61 lines
2.8 KiB
C#
61 lines
2.8 KiB
C#
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using System;
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#if XFORMS
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using Xamarin.Forms;
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using DependencyProperty = Xamarin.Forms.BindableProperty;
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#elif WinRT
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using Windows.UI.Xaml;
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#else
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using System.Windows;
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#endif
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namespace Caliburn.Micro
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{
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/// <summary>
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/// Class that abstracts the differences in creating a DepedencyProperty / BindableProperty on the different platforms.
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/// </summary>
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public static class DependencyPropertyHelper
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{
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/// <summary>
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/// Register an attached dependency / bindable property
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/// </summary>
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/// <param name="name">The property name</param>
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/// <param name="propertyType">The property type</param>
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/// <param name="ownerType">The owner type</param>
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/// <param name="defaultValue">The default value</param>
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/// <param name="propertyChangedCallback">Callback to executed on property changed</param>
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/// <returns>The registred attached dependecy property</returns>
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public static DependencyProperty RegisterAttached(string name, Type propertyType, Type ownerType, object defaultValue = null, PropertyChangedCallback propertyChangedCallback = null) {
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#if XFORMS
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return DependencyProperty.CreateAttached(name, propertyType, ownerType, defaultValue, propertyChanged: (obj, oldValue, newValue) => {
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if (propertyChangedCallback != null)
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propertyChangedCallback(obj, new DependencyPropertyChangedEventArgs(newValue, oldValue, null));
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});
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#else
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return DependencyProperty.RegisterAttached(name, propertyType, ownerType, new PropertyMetadata(defaultValue, propertyChangedCallback));
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#endif
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}
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/// <summary>
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/// Register a dependency / bindable property
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/// </summary>
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/// <param name="name">The property name</param>
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/// <param name="propertyType">The property type</param>
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/// <param name="ownerType">The owner type</param>
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/// <param name="defaultValue">The default value</param>
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/// <param name="propertyChangedCallback">Callback to executed on property changed</param>
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/// <returns>The registred dependecy property</returns>
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public static DependencyProperty Register(string name, Type propertyType, Type ownerType, object defaultValue = null, PropertyChangedCallback propertyChangedCallback = null)
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{
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#if XFORMS
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return DependencyProperty.Create(name, propertyType, ownerType, defaultValue, propertyChanged: (obj, oldValue, newValue) =>
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{
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if (propertyChangedCallback != null)
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propertyChangedCallback(obj, new DependencyPropertyChangedEventArgs(newValue, oldValue, null));
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});
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#else
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return DependencyProperty.Register(name, propertyType, ownerType, new PropertyMetadata(defaultValue, propertyChangedCallback));
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#endif
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}
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}
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}
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