58 lines
1.9 KiB
C#
58 lines
1.9 KiB
C#
using System;
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using System.Collections.Generic;
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using System.ComponentModel;
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using System.Linq;
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using System.Runtime.CompilerServices;
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using System.Text;
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using System.Threading.Tasks;
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namespace butterflow_ui
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{
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/// <summary> A class responsible for implementing the <see cref="INotifyPropertyChanged"/> interface and helper functions. </summary>
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public abstract class PropertyChangedAlerter : INotifyPropertyChanged
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{
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#region Members
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/// <summary> Occurs when a property value changes. </summary>
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public event PropertyChangedEventHandler PropertyChanged;
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/// <summary> A list of properties to always call as updated. Generally used for composite properties. </summary>
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private List<string> alwaysCall = new List<string>();
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#endregion
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#region Properties
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//
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#endregion
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#region Methods
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/// <summary> Executes the property changed action. </summary>
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/// <param name="name"> The name. </param>
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protected virtual void OnPropertyChanged([CallerMemberName]string name = null)
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{
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if (!string.IsNullOrWhiteSpace(name))
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{
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this.PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(name));
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foreach (var updatedProperty in this.alwaysCall)
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{
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this.PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(updatedProperty));
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}
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}
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}
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/// <summary> Adds a property that will always be called when any property is updated.. </summary>
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/// <param name="name"> The name of the property. </param>
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public void AddConstantCallProperty(string name)
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{
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if (!this.alwaysCall.Any(c => c.Equals(name, StringComparison.OrdinalIgnoreCase)))
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{
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this.alwaysCall.Add(name);
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}
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}
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#endregion
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}
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}
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