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Code Issues Releases Wiki Activity

Use null instead of -1

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Derrick Timmermans 2021-07-06 11:30:56 +02:00
parent d495196b66
commit 32ef2405c4
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GPG Key ID: 8681B60806EF4A17
1 changed files with 21 additions and 13 deletions
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34
osu.Game/Graphics/Containers/SelectionCycleFillFlowContainer.cs
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@ -13,43 +13,51 @@ namespace osu.Game.Graphics.Containers
/// </summary>
public class SelectionCycleFillFlowContainer<T> : FillFlowContainer<T> where T : Drawable, ISelectable
{
private int selectedIndex = -1;
private int? selectedIndex;
private void setSelected(int value)
private void setSelected(int? value)
{
if (selectedIndex == value)
return;
// Deselect the previously-selected button
if (selectedIndex != -1)
this[selectedIndex].Selected = false;
if (selectedIndex.HasValue)
this[selectedIndex.Value].Selected = false;
selectedIndex = value;
// Select the newly-selected button
if (selectedIndex != -1)
this[selectedIndex].Selected = true;
if (selectedIndex.HasValue)
this[selectedIndex.Value].Selected = true;
}
public void SelectNext()
{
if (selectedIndex == -1 || selectedIndex == Count - 1)
if (!selectedIndex.HasValue || selectedIndex == Count - 1)
setSelected(0);
else
setSelected(selectedIndex + 1);
setSelected(selectedIndex.Value + 1);
}
public void SelectPrevious()
{
if (selectedIndex == -1 || selectedIndex == 0)
if (!selectedIndex.HasValue || selectedIndex == 0)
setSelected(Count - 1);
else
setSelected(selectedIndex - 1);
setSelected(selectedIndex.Value - 1);
}
public void Deselect() => setSelected(-1);
public void Select(T item) => setSelected(IndexOf(item));
public void Deselect() => setSelected(null);
public void Select(T item)
{
var newIndex = IndexOf(item);
public T Selected => (selectedIndex >= 0 && selectedIndex < Count) ? this[selectedIndex] : null;
if (newIndex < 0)
setSelected(null);
else
setSelected(IndexOf(item));
}
public T Selected => (selectedIndex >= 0 && selectedIndex < Count) ? this[selectedIndex.Value] : null;
}
}