osu-lazer/osu.Game/Screens/Edit/EditorScreen.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.Framework.Graphics;
using osu.Framework.Graphics.Containers;
using osu.Framework.Graphics.Cursor;

namespace osu.Game.Screens.Edit
{
    /// <summary>
    /// TODO: eventually make this inherit Screen and add a local screen stack inside the Editor.
    /// </summary>
    public abstract class EditorScreen : VisibilityContainer
    {
        [Resolved]
        protected EditorBeatmap EditorBeatmap { get; private set; }

        protected override Container<Drawable> Content => content;
        private readonly Container content;

        public readonly EditorScreenMode Type;

        protected EditorScreen(EditorScreenMode type)
        {
            Type = type;

            Anchor = Anchor.Centre;
            Origin = Anchor.Centre;
            RelativeSizeAxes = Axes.Both;

            InternalChild = content = new PopoverContainer { RelativeSizeAxes = Axes.Both };
        }

        protected override void PopIn() => this.FadeIn();

        protected override void PopOut() => this.FadeOut();

        #region Clipboard operations

        public BindableBool CanCut { get; } = new BindableBool();

        /// <summary>
        /// Performs a "cut to clipboard" operation appropriate for the given screen.
        /// </summary>
        protected virtual void PerformCut()
        {
        }

        public void Cut()
        {
            if (CanCut.Value)
                PerformCut();
        }

        public BindableBool CanCopy { get; } = new BindableBool();

        /// <summary>
        /// Performs a "copy to clipboard" operation appropriate for the given screen.
        /// </summary>
        protected virtual void PerformCopy()
        {
        }

        public virtual void Copy()
        {
            if (CanCopy.Value)
                PerformCopy();
        }

        public BindableBool CanPaste { get; } = new BindableBool();

        /// <summary>
        /// Performs a "paste from clipboard" operation appropriate for the given screen.
        /// </summary>
        protected virtual void PerformPaste()
        {
        }

        public virtual void Paste()
        {
            if (CanPaste.Value)
                PerformPaste();
        }

        #endregion
    }
}