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fully disallow access to internal children collections

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Ell 2021-03-24 01:39:41 +01:00
parent dcee3c5010
commit be9748e70e
4 changed files with 21 additions and 22 deletions
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37
MLEM.Ui/Elements/Element.cs
View file

@ -1,5 +1,7 @@
using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Linq;
using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Graphics;
using Microsoft.Xna.Framework.Input;
@ -19,18 +21,19 @@ namespace MLEM.Ui.Elements {
/// A list of all of this element's direct children.
/// Use <see cref="AddChild{T}"/> or <see cref="RemoveChild"/> to manipulate this list while calling all of the necessary callbacks.
/// </summary>
protected readonly List<Element> Children = new List<Element>();
private readonly List<Element> sortedChildren = new List<Element>();
protected readonly IList<Element> Children;
private readonly List<Element> children = new List<Element>();
/// <summary>
/// A sorted version of <see cref="Children"/>. The children are sorted by their <see cref="Priority"/>.
/// </summary>
protected List<Element> SortedChildren {
protected IList<Element> SortedChildren {
get {
this.UpdateSortedChildrenIfDirty();
return this.sortedChildren;
}
}
private bool sortedChildrenDirty;
private IList<Element> sortedChildren;
private UiSystem system;
/// <summary>
@ -398,6 +401,8 @@ namespace MLEM.Ui.Elements {
this.anchor = anchor;
this.size = size;
this.Children = new ReadOnlyCollection<Element>(this.children);
this.OnMouseEnter += element => this.IsMouseOver = true;
this.OnMouseExit += element => this.IsMouseOver = false;
this.OnTouchEnter += element => this.IsMouseOver = true;
@ -408,6 +413,7 @@ namespace MLEM.Ui.Elements {
this.GetGamepadNextElement += (dir, next) => next;
this.SetAreaDirty();
this.SetSortedChildrenDirty();
}
/// <summary>
@ -418,9 +424,9 @@ namespace MLEM.Ui.Elements {
/// <typeparam name="T">The type of child to add</typeparam>
/// <returns>This element, for chaining</returns>
public T AddChild<T>(T element, int index = -1) where T : Element {
if (index < 0 || index > this.Children.Count)
index = this.Children.Count;
this.Children.Insert(index, element);
if (index < 0 || index > this.children.Count)
index = this.children.Count;
this.children.Insert(index, element);
element.Parent = this;
element.AndChildren(e => {
e.Root = this.Root;
@ -438,7 +444,7 @@ namespace MLEM.Ui.Elements {
/// </summary>
/// <param name="element">The child element to remove</param>
public void RemoveChild(Element element) {
this.Children.Remove(element);
this.children.Remove(element);
// set area dirty here so that a dirty call is made
// upwards to us if the element is auto-positioned
element.SetAreaDirty();
@ -485,10 +491,7 @@ namespace MLEM.Ui.Elements {
/// </summary>
public virtual void ForceUpdateSortedChildren() {
this.sortedChildrenDirty = false;
this.sortedChildren.Clear();
this.sortedChildren.AddRange(this.Children);
this.sortedChildren.Sort((e1, e2) => e1.Priority.CompareTo(e2.Priority));
this.sortedChildren = new ReadOnlyCollection<Element>(this.Children.OrderBy(e => e.Priority).ToArray());
}
/// <summary>
@ -803,7 +806,7 @@ namespace MLEM.Ui.Elements {
/// A <see cref="Panel"/> only returns elements that are currently in view here.
/// </summary>
/// <returns>This element's relevant children</returns>
protected virtual List<Element> GetRelevantChildren() {
protected virtual IList<Element> GetRelevantChildren() {
return this.SortedChildren;
}
@ -901,9 +904,9 @@ namespace MLEM.Ui.Elements {
return null;
if (this.Transform != Matrix.Identity)
position = Vector2.Transform(position, Matrix.Invert(this.Transform));
var children = this.GetRelevantChildren();
for (var i = children.Count - 1; i >= 0; i--) {
var element = children[i].GetElementUnderPos(position);
var relevant = this.GetRelevantChildren();
for (var i = relevant.Count - 1; i >= 0; i--) {
var element = relevant[i].GetElementUnderPos(position);
if (element != null)
return element;
}
@ -925,7 +928,7 @@ namespace MLEM.Ui.Elements {
/// </summary>
/// <param name="comparison">The comparison to sort by</param>
public void ReorderChildren(Comparison<Element> comparison) {
this.Children.Sort(comparison);
this.children.Sort(comparison);
}
/// <summary>
@ -934,7 +937,7 @@ namespace MLEM.Ui.Elements {
/// <param name="index">The index to start reversing at</param>
/// <param name="count">The amount of elements to reverse</param>
public void ReverseChildren(int index = 0, int? count = null) {
this.Children.Reverse(index, count ?? this.Children.Count);
this.children.Reverse(index, count ?? this.Children.Count);
}
/// <summary>

2
MLEM.Ui/Elements/Panel.cs
View file

@ -116,7 +116,7 @@ namespace MLEM.Ui.Elements {
}
/// <inheritdoc />
protected override List<Element> GetRelevantChildren() {
protected override IList<Element> GetRelevantChildren() {
var relevant = base.GetRelevantChildren();
if (this.scrollOverflow) {
if (this.relevantChildrenDirty) {

3
Tests/DataTextureAtlasTests.cs
View file

@ -1,8 +1,5 @@
using System.Collections.Generic;
using System.IO;
using System.Linq;
using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Graphics;
using MLEM.Data;
using MLEM.Data.Content;
using NUnit.Framework;

1
Tests/DirectionTests.cs
View file

@ -1,4 +1,3 @@
using System.Drawing;
using Microsoft.Xna.Framework;
using MLEM.Misc;
using NUnit.Framework;