holger/ModernWpfPlayground
1
0
Fork 0
mirror of https://github.com/holgerb83/ModernWpfPlayground.git synced 2025-06-30 17:50:51 +02:00
Code Issues 1 Projects 1 Releases Wiki Activity

updated nuget packages

Browse Source
This commit is contained in:
Holger Börchers
2020-08-28 20:55:08 +02:00
parent 1cf692547f
commit 8cd47a0252
4 changed files with 21 additions and 23 deletions
Download Patch File Download Diff File Expand all files Collapse all files

28
App/MvvmStuff/BaseViewModel.cs
View File

@ -16,6 +16,7 @@ namespace ModernWpfPlayground.MvvmStuff
private readonly Dictionary<string, object?> _values = new Dictionary<string, object?>();
protected readonly ObjectAccessor ObjectAccessor;
private readonly Dictionary<string, object?> _defaultValues = new Dictionary<string, object?>();
protected IReadOnlyDictionary<string, object?> Values => _values;
@ -34,21 +35,21 @@ namespace ModernWpfPlayground.MvvmStuff
protected T GetProperty<T>(T defaultValue = default, [CallerMemberName] string? propertyName = null)
{
if (propertyName == null) throw new ArgumentNullException(nameof(propertyName));
return Values.TryGetValue(propertyName, out var obj) ? (T)obj! : defaultValue;
if (Values.TryGetValue(propertyName, out var obj))
{
return (T) obj!;
}
_defaultValues[propertyName] =defaultValue;
return defaultValue;
}
protected void ResetViewModel(Func<string, bool>? predicate = null)
protected void ResetViewModel()
{
IEnumerable<string> keys = _values.Keys.ToArray();
if (predicate != null) keys = keys.Where(predicate);
foreach (var key in keys)
foreach (var (key, value) in _values.ToArray())
{
var currentValue = ObjectAccessor[key];
_values.Remove(key);
var newValue = ObjectAccessor[key];
if (Equals(currentValue, newValue)) continue;
_values.Add(key, currentValue);
ObjectAccessor[key] = newValue;
if (_defaultValues.TryGetValue(key, out var defaultValue) && Equals(value, defaultValue)) continue;
ObjectAccessor[key] = defaultValue;
}
}
@ -56,14 +57,11 @@ namespace ModernWpfPlayground.MvvmStuff
protected void LoadViewModel()
{
var keysFromFile = new SortedSet<string>();
ResetViewModel();
foreach (var (key, value) in GetViewModelItems())
{
keysFromFile.Add(key);
ObjectAccessor[key] = value;
}
ResetViewModel(x => !keysFromFile.Contains(x));
}
}
}