55 lines
1.5 KiB
C#
55 lines
1.5 KiB
C#
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using MyMobileApp.Models;
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using MyMobileApp.Services;
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using System;
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using System.Collections.Generic;
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using System.ComponentModel;
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using System.Runtime.CompilerServices;
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using Xamarin.Forms;
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namespace MyMobileApp.ViewModels
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{
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public class BaseViewModel : INotifyPropertyChanged
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{
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public IDataStore<Item> DataStore => DependencyService.Get<IDataStore<Item>>();
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bool isBusy = false;
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public bool IsBusy
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{
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get { return isBusy; }
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set { SetProperty(ref isBusy, value); }
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}
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string title = string.Empty;
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public string Title
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{
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get { return title; }
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set { SetProperty(ref title, value); }
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}
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protected bool SetProperty<T>(ref T backingStore, T value,
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[CallerMemberName] string propertyName = "",
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Action onChanged = null)
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{
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if (EqualityComparer<T>.Default.Equals(backingStore, value))
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return false;
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backingStore = value;
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onChanged?.Invoke();
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OnPropertyChanged(propertyName);
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return true;
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}
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#region INotifyPropertyChanged
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public event PropertyChangedEventHandler PropertyChanged;
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protected void OnPropertyChanged([CallerMemberName] string propertyName = "")
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{
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var changed = PropertyChanged;
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if (changed == null)
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return;
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changed.Invoke(this, new PropertyChangedEventArgs(propertyName));
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}
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#endregion
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}
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}
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