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Added Element.AutoHideCondition and Button.AutoDisableCondition

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Ell 2022-12-21 18:54:25 +01:00
parent b41341d01e
commit d5d3297271
3 changed files with 28 additions and 2 deletions
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1
CHANGELOG.md
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@ -57,6 +57,7 @@ Additions
- Added ScrollBar.MouseDragScrolling
- Added Panel.ScrollToElement
- Added ElementHelper.MakeGrid
- Added Element.AutoHideCondition and Button.AutoDisableCondition
Improvements
- Allow elements to auto-adjust their size even when their children are aligned oddly

17
MLEM.Ui/Elements/Button.cs
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@ -1,3 +1,4 @@
using System;
using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Graphics;
using MLEM.Graphics;
@ -51,8 +52,16 @@ namespace MLEM.Ui.Elements {
/// <summary>
/// Set this property to true to mark the button as disabled.
/// A disabled button cannot be moused over, selected or pressed.
/// If this value changes often, consider using <see cref="AutoDisableCondition"/> to set it automatically.
/// </summary>
public virtual bool IsDisabled { get; set; }
public virtual bool IsDisabled {
get {
if (this.AutoDisableCondition != null)
this.IsDisabled = this.AutoDisableCondition(this);
return this.isDisabled;
}
set => this.isDisabled = value;
}
/// <summary>
/// Whether this button's <see cref="Text"/> should be truncated if it exceeds this button's width.
/// Defaults to false.
@ -69,12 +78,18 @@ namespace MLEM.Ui.Elements {
/// If this is true, <see cref="CanBeSelected"/> will be able to return true even if <see cref="IsDisabled"/> is true.
/// </summary>
public bool CanSelectDisabled;
/// <summary>
/// An optional function that can be used to set <see cref="IsDisabled"/> automatically based on a user-defined condition. This removes the need to disable a button based on a condition in <see cref="Element.OnUpdated"/> or manually.
/// </summary>
public Func<Button, bool> AutoDisableCondition;
/// <inheritdoc />
public override bool CanBeSelected => base.CanBeSelected && (this.CanSelectDisabled || !this.IsDisabled);
/// <inheritdoc />
public override bool CanBePressed => base.CanBePressed && !this.IsDisabled;
private bool isDisabled;
/// <summary>
/// Creates a new button with the given settings
/// </summary>

12
MLEM.Ui/Elements/Element.cs
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@ -172,9 +172,15 @@ namespace MLEM.Ui.Elements {
/// <summary>
/// Set this property to <c>true</c> to cause this element to be hidden.
/// Hidden elements don't receive input events, aren't rendered and don't factor into auto-anchoring.
/// If this value changes often, consider using <see cref="AutoHideCondition"/> to set it automatically.
/// </summary>
public virtual bool IsHidden {
get => this.isHidden;
get {
// instead of just returning, we set IsHidden here because we might have to set our area dirty
if (this.AutoHideCondition != null)
this.IsHidden = this.AutoHideCondition(this);
return this.isHidden;
}
set {
if (this.isHidden == value)
return;
@ -430,6 +436,10 @@ namespace MLEM.Ui.Elements {
/// </summary>
[Obsolete("OnDisposed will be removed in a future update. To unregister custom event handlers, use OnRemovedFromUi instead.")]
public GenericCallback OnDisposed;
/// <summary>
/// An optional function that can be used to set <see cref="IsHidden"/> automatically based on a user-defined condition. This removes the need to hide an element based on a condition in <see cref="Element.OnUpdated"/> or manually.
/// </summary>
public Func<Element, bool> AutoHideCondition;
/// <summary>
/// A list of all of this element's direct children.