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Add arraysize gui field for lists #185

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Merged
vanifatovvlad merged 1 commit into from
Mar 19, 2025
Merged

Add arraysize gui field for lists #185

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73 changes: 67 additions & 6 deletions Editor/Elements/TriListElement.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -248,6 +248,56 @@ private void ReorderCallback(ReorderableList list, int oldIndex, int newIndex)
});
}

private void SetArraySizeCallback(int arraySize)
{
if (arraySize < 0)
{
return;
}

if (_property.TryGetSerializedProperty(out var serializedProperty))
{
serializedProperty.arraySize = arraySize;
_property.NotifyValueChanged();
return;
}

var template = CloneValue(_property);

_property.SetValues(targetIndex =>
{
var value = (IList) _property.GetValue(targetIndex);

if (_property.FieldType.IsArray)
{
var array = Array.CreateInstance(_property.ArrayElementType, arraySize);
Array.Copy(template, array, Math.Min(arraySize, template.Length));

value = array;
}
else
{
if (value == null)
{
value = (IList) Activator.CreateInstance(_property.FieldType);
}

while (value.Count > arraySize)
{
value.RemoveAt(value.Count - 1);
}

while (value.Count < arraySize)
{
var newElement = CreateDefaultElementValue(_property);
value.Add(newElement);
}
}

return value;
});
}

private bool GenerateChildren()
{
var count = _reorderableListGui.count;
Expand Down Expand Up @@ -293,10 +343,13 @@ protected virtual TriElement CreateItemElement(TriProperty property)

private void DrawHeaderCallback(Rect rect)
{
var labelRect = new Rect(rect);
var labelRect = new Rect(rect)
{
xMax = rect.xMax - 50,
};
var arraySizeRect = new Rect(rect)
{
xMin = rect.xMax - 100,
xMin = labelRect.xMax,
};

if (_alwaysExpanded)
Expand All @@ -308,8 +361,16 @@ private void DrawHeaderCallback(Rect rect)
TriEditorGUI.Foldout(labelRect, _property);
}

var label = _reorderableListGui.count == 0 ? "Empty" : $"{_reorderableListGui.count} items";
GUI.Label(arraySizeRect, label, Styles.ItemsCount);
EditorGUI.BeginChangeCheck();

var newArraySize = EditorGUI.DelayedIntField(arraySizeRect, _reorderableListGui.count);

if (EditorGUI.EndChangeCheck())
{
SetArraySizeCallback(newArraySize);
GUIUtility.ExitGUI();
return;
}

if (Event.current.type == EventType.DragUpdated && rect.Contains(Event.current.mousePosition))
{
Expand Down Expand Up @@ -410,7 +471,7 @@ private bool TryGetDragAndDropObject(Object obj, out Object result)
private class ListPropertyOverrideContext : TriPropertyOverrideContext
{
public static readonly ListPropertyOverrideContext Instance = new ListPropertyOverrideContext();

private readonly GUIContent _noneLabel = GUIContent.none;

public override bool TryGetDisplayName(TriProperty property, out GUIContent displayName)
Expand All @@ -428,7 +489,7 @@ public override bool TryGetDisplayName(TriProperty property, out GUIContent disp
return false;
}
}

private static class Styles
{
public static readonly GUIStyle ItemsCount;
Expand Down