aa121dcb2f
Use the covariant return type feature of C# 9 to allow method overrides to be more specific about their return type. By exposing this information, e.g. for Widget.Clone(), callers will have more information. This allows various casts to be removed as the information is now available within the type system.
65 lines
1.9 KiB
C#
65 lines
1.9 KiB
C#
#region Copyright & License Information
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/*
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* Copyright (c) The OpenRA Developers and Contributors
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* This file is part of OpenRA, which is free software. It is made
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* available to you under the terms of the GNU General Public License
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* as published by the Free Software Foundation, either version 3 of
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* the License, or (at your option) any later version. For more
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* information, see COPYING.
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*/
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#endregion
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using System;
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using OpenRA.Widgets;
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namespace OpenRA.Mods.Common.Widgets
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{
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public class LabelWithTooltipWidget : LabelWidget
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{
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public readonly string TooltipTemplate;
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public readonly string TooltipContainer;
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protected Lazy<TooltipContainerWidget> tooltipContainer;
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public Func<string> GetTooltipText = () => "";
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[ObjectCreator.UseCtor]
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public LabelWithTooltipWidget(ModData modData)
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: base(modData)
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{
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tooltipContainer = Exts.Lazy(() =>
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Ui.Root.Get<TooltipContainerWidget>(TooltipContainer));
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}
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protected LabelWithTooltipWidget(LabelWithTooltipWidget other)
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: base(other)
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{
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TooltipTemplate = other.TooltipTemplate;
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TooltipContainer = other.TooltipContainer;
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tooltipContainer = Exts.Lazy(() =>
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Ui.Root.Get<TooltipContainerWidget>(TooltipContainer));
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GetTooltipText = other.GetTooltipText;
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}
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public override LabelWithTooltipWidget Clone() { return new LabelWithTooltipWidget(this); }
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public override void MouseEntered()
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{
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if (TooltipContainer == null)
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return;
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if (GetTooltipText != null)
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tooltipContainer.Value.SetTooltip(TooltipTemplate, new WidgetArgs() { { "getText", GetTooltipText } });
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}
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public override void MouseExited()
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{
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// Only try to remove the tooltip if we know it has been created
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// This avoids a crash if the widget (and the container it refers to) are being removed
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if (TooltipContainer != null && tooltipContainer.IsValueCreated)
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tooltipContainer.Value.RemoveTooltip();
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}
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}
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}
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