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osu-lazer/osu.Game/Overlays/News/NewsHeader.cs

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// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
// See the LICENCE file in the repository root for full licence text.
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using osu.Framework.Bindables;
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using osu.Framework.Graphics;
using osu.Game.Graphics.UserInterface;
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using System;
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namespace osu.Game.Overlays.News
{
public class NewsHeader : BreadcrumbControlOverlayHeader
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{
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private const string front_page_string = "frontpage";
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private NewsHeaderTitle title;
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public readonly Bindable<string> Current = new Bindable<string>(null);
public Action ShowFrontPage;
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public NewsHeader()
{
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TabControl.AddItem(front_page_string);
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TabControl.Current.ValueChanged += e =>
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{
if (e.NewValue == front_page_string)
ShowFrontPage?.Invoke();
};
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Current.ValueChanged += showPost;
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}
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private void showPost(ValueChangedEvent<string> e)
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{
if (e.OldValue != null)
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TabControl.RemoveItem(e.OldValue);
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if (e.NewValue != null)
{
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TabControl.AddItem(e.NewValue);
TabControl.Current.Value = e.NewValue;
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title.IsReadingPost = true;
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}
else
{
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TabControl.Current.Value = front_page_string;
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title.IsReadingPost = false;
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}
}
protected override Drawable CreateBackground() => new OverlayHeaderBackground(@"Headers/news");
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protected override ScreenTitle CreateTitle() => title = new NewsHeaderTitle();
private class NewsHeaderTitle : ScreenTitle
{
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private const string post_string = "post";
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public bool IsReadingPost
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{
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set => Section = value ? post_string : front_page_string;
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}
public NewsHeaderTitle()
{
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Title = "news";
IsReadingPost = false;
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}
protected override Drawable CreateIcon() => new ScreenTitleTextureIcon(@"Icons/news");
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}
}
}