osu-lazer/osu.Game/Screens/OnlinePlay/Multiplayer/CreateMultiplayerMatchButton.cs

// 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.

using osu.Framework.Allocation;
using osu.Framework.Bindables;
using osu.Game.Online.Multiplayer;
using osu.Game.Screens.OnlinePlay.Match.Components;

namespace osu.Game.Screens.OnlinePlay.Multiplayer
{
    public class CreateMultiplayerMatchButton : PurpleTriangleButton
    {
        private IBindable<bool> isConnected;
        private IBindable<bool> operationInProgress;

        [Resolved]
        private StatefulMultiplayerClient multiplayerClient { get; set; }

        [Resolved]
        private OngoingOperationTracker ongoingOperationTracker { get; set; }

        [BackgroundDependencyLoader]
        private void load()
        {
            Triangles.TriangleScale = 1.5f;

            Text = "Create room";

            isConnected = multiplayerClient.IsConnected.GetBoundCopy();
            operationInProgress = ongoingOperationTracker.InProgress.GetBoundCopy();
        }

        protected override void LoadComplete()
        {
            base.LoadComplete();

            isConnected.BindValueChanged(_ => updateState());
            operationInProgress.BindValueChanged(_ => updateState(), true);
        }

        private void updateState() => Enabled.Value = isConnected.Value && !operationInProgress.Value;
    }
}