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TextBox, PropertyChangeHandler

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This commit is contained in:
Ádám Kovács
2023-08-11 21:51:44 +02:00
parent e989a65e81
commit 1fde0df2d6
81 changed files with 1539 additions and 390 deletions
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25
src/Library/TerminalUI/Controls/ListView.cs
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@@ -9,12 +9,12 @@ namespace TerminalUI.Controls;
public partial class ListView<TDataContext, TItem> : View<TDataContext>
{
private static readonly ArrayPool<ListViewItem<TItem>> ListViewItemPool = ArrayPool<ListViewItem<TItem>>.Shared;
private static readonly ArrayPool<ListViewItem<TItem, TDataContext>> ListViewItemPool = ArrayPool<ListViewItem<TItem, TDataContext>>.Shared;
private readonly List<IDisposable> _itemsDisposables = new();
private Func<IEnumerable<TItem>?>? _getItems;
private object? _itemsSource;
private ListViewItem<TItem>[]? _listViewItems;
private ListViewItem<TItem, TDataContext>[]? _listViewItems;
private int _listViewItemLength;
private int _selectedIndex = 0;
private int _renderStartIndex = 0;
@@ -30,6 +30,14 @@ public partial class ListView<TDataContext, TItem> : View<TDataContext>
if (_selectedIndex != value)
{
_selectedIndex = value;
if (_listViewItems is not null)
{
for (var i = 0; i < _listViewItemLength; i++)
{
_listViewItems[i].IsSelected = i == value;
}
}
OnPropertyChanged();
OnPropertyChanged(nameof(SelectedItem));
}
@@ -124,7 +132,7 @@ public partial class ListView<TDataContext, TItem> : View<TDataContext>
}
}
public Func<ListViewItem<TItem>, IView<TItem>?> ItemTemplate { get; set; } = DefaultItemTemplate;
public Func<ListViewItem<TItem, TDataContext>, IView<TItem>?> ItemTemplate { get; set; } = DefaultItemTemplate;
public ListView()
{
@@ -292,7 +300,7 @@ public partial class ListView<TDataContext, TItem> : View<TDataContext>
return true;
}
private Span<ListViewItem<TItem>> InstantiateItemViews()
private ReadOnlySpan<ListViewItem<TItem, TDataContext>> InstantiateItemViews()
{
var items = _getItems?.Invoke()?.ToList();
if (items is null)
@@ -305,7 +313,7 @@ public partial class ListView<TDataContext, TItem> : View<TDataContext>
return _listViewItems;
}
Span<ListViewItem<TItem>> listViewItems;
ReadOnlySpan<ListViewItem<TItem, TDataContext>> listViewItems;
if (_listViewItems is null || _listViewItemLength != items.Count)
{
@@ -313,7 +321,8 @@ public partial class ListView<TDataContext, TItem> : View<TDataContext>
for (var i = 0; i < items.Count; i++)
{
var dataContext = items[i];
var child = CreateChild<ListViewItem<TItem>, TItem>(_ => dataContext);
var child = new ListViewItem<TItem, TDataContext>(this);
AddChild(child, _ => dataContext);
var newContent = ItemTemplate(child);
child.Content = newContent;
newListViewItems[i] = child;
@@ -336,12 +345,12 @@ public partial class ListView<TDataContext, TItem> : View<TDataContext>
return listViewItems;
}
private Span<ListViewItem<TItem>> InstantiateEmptyItemViews()
private ReadOnlySpan<ListViewItem<TItem, TDataContext>> InstantiateEmptyItemViews()
{
_listViewItems = ListViewItemPool.Rent(0);
_listViewItemLength = 0;
return _listViewItems;
}
private static IView<TItem>? DefaultItemTemplate(ListViewItem<TItem> listViewItem) => null;
private static IView<TItem>? DefaultItemTemplate(ListViewItem<TItem, TDataContext> listViewItem) => null;
}