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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 System.Collections.Generic ;
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using System.Linq ;
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using System.Threading ;
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using osu.Framework.Allocation ;
using osu.Framework.Graphics ;
using osu.Framework.Graphics.Containers ;
using osu.Framework.Graphics.Shapes ;
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using osu.Framework.Graphics.Sprites ;
using osu.Framework.Graphics.Textures ;
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using osu.Framework.Input.Events ;
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using osu.Game.Audio ;
using osu.Game.Beatmaps ;
using osu.Game.Graphics.Containers ;
using osu.Game.Graphics.Sprites ;
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using osu.Game.Graphics.UserInterface ;
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using osu.Game.Overlays.BeatmapListing ;
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using osu.Game.Overlays.BeatmapListing.Panels ;
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using osuTK ;
namespace osu.Game.Overlays
{
public class BeatmapListingOverlay : FullscreenOverlay
{
[Resolved]
private PreviewTrackManager previewTrackManager { get ; set ; }
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private Drawable currentContent ;
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private LoadingLayer loadingLayer ;
private Container panelTarget ;
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public BeatmapListingOverlay ( )
: base ( OverlayColourScheme . Blue )
{
}
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private BeatmapListingFilterControl filterControl ;
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[BackgroundDependencyLoader]
private void load ( )
{
Children = new Drawable [ ]
{
new Box
{
RelativeSizeAxes = Axes . Both ,
Colour = ColourProvider . Background6
} ,
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new OverlayScrollContainer
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{
RelativeSizeAxes = Axes . Both ,
ScrollbarVisible = false ,
Child = new ReverseChildIDFillFlowContainer < Drawable >
{
AutoSizeAxes = Axes . Y ,
RelativeSizeAxes = Axes . X ,
Direction = FillDirection . Vertical ,
Children = new Drawable [ ]
{
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new BeatmapListingHeader ( ) ,
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filterControl = new BeatmapListingFilterControl
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{
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SearchStarted = onSearchStarted ,
SearchFinished = onSearchFinished ,
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} ,
new Container
{
AutoSizeAxes = Axes . Y ,
RelativeSizeAxes = Axes . X ,
Children = new Drawable [ ]
{
new Box
{
RelativeSizeAxes = Axes . Both ,
Colour = ColourProvider . Background4 ,
} ,
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panelTarget = new Container
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{
AutoSizeAxes = Axes . Y ,
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RelativeSizeAxes = Axes . X ,
Padding = new MarginPadding { Horizontal = 20 }
} ,
loadingLayer = new LoadingLayer ( panelTarget )
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}
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} ,
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}
}
}
} ;
}
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protected override void OnFocus ( FocusEvent e )
{
base . OnFocus ( e ) ;
filterControl . TakeFocus ( ) ;
}
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private CancellationTokenSource cancellationToken ;
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private void onSearchStarted ( )
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{
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cancellationToken ? . Cancel ( ) ;
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previewTrackManager . StopAnyPlaying ( this ) ;
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if ( panelTarget . Any ( ) )
loadingLayer . Show ( ) ;
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}
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private void onSearchFinished ( List < BeatmapSetInfo > beatmaps )
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{
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if ( ! beatmaps . Any ( ) )
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{
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LoadComponentAsync ( new NotFoundDrawable ( ) , addContentToPlaceholder , ( cancellationToken = new CancellationTokenSource ( ) ) . Token ) ;
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return ;
}
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var newPanels = new FillFlowContainer < BeatmapPanel >
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{
RelativeSizeAxes = Axes . X ,
AutoSizeAxes = Axes . Y ,
Spacing = new Vector2 ( 10 ) ,
Alpha = 0 ,
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Margin = new MarginPadding { Vertical = 15 } ,
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ChildrenEnumerable = beatmaps . Select < BeatmapSetInfo , BeatmapPanel > ( b = > new GridBeatmapPanel ( b )
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{
Anchor = Anchor . TopCentre ,
Origin = Anchor . TopCentre ,
} )
} ;
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LoadComponentAsync ( newPanels , addContentToPlaceholder , ( cancellationToken = new CancellationTokenSource ( ) ) . Token ) ;
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}
private void addContentToPlaceholder ( Drawable content )
{
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loadingLayer . Hide ( ) ;
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var lastContent = currentContent ;
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if ( lastContent ! = null )
{
lastContent . FadeOut ( 100 , Easing . OutQuint ) . Expire ( ) ;
// Consider the case when the new content is smaller than the last content.
// If the auto-size computation is delayed until fade out completes, the background remain high for too long making the resulting transition to the smaller height look weird.
// At the same time, if the last content's height is bypassed immediately, there is a period where the new content is at Alpha = 0 when the auto-sized height will be 0.
// To resolve both of these issues, the bypass is delayed until a point when the content transitions (fade-in and fade-out) overlap and it looks good to do so.
lastContent . Delay ( 25 ) . Schedule ( ( ) = > lastContent . BypassAutoSizeAxes = Axes . Y ) ;
}
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panelTarget . Add ( currentContent = content ) ;
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currentContent . FadeIn ( 200 , Easing . OutQuint ) ;
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}
protected override void Dispose ( bool isDisposing )
{
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cancellationToken ? . Cancel ( ) ;
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base . Dispose ( isDisposing ) ;
}
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private class NotFoundDrawable : CompositeDrawable
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{
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public NotFoundDrawable ( )
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{
RelativeSizeAxes = Axes . X ;
Height = 250 ;
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Alpha = 0 ;
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Margin = new MarginPadding { Top = 15 } ;
}
[BackgroundDependencyLoader]
private void load ( TextureStore textures )
{
AddInternal ( new FillFlowContainer
{
Anchor = Anchor . Centre ,
Origin = Anchor . Centre ,
RelativeSizeAxes = Axes . Y ,
AutoSizeAxes = Axes . X ,
Direction = FillDirection . Horizontal ,
Spacing = new Vector2 ( 10 , 0 ) ,
Children = new Drawable [ ]
{
new Sprite
{
Anchor = Anchor . Centre ,
Origin = Anchor . Centre ,
RelativeSizeAxes = Axes . Both ,
FillMode = FillMode . Fit ,
Texture = textures . Get ( @"Online/not-found" )
} ,
new OsuSpriteText
{
Anchor = Anchor . Centre ,
Origin = Anchor . Centre ,
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Text = @"... nope, nothing found." ,
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}
}
} ) ;
}
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}
}
}