117 lines
3.9 KiB
C#
117 lines
3.9 KiB
C#
// Copyright (c) 2012-2024 Wojciech Figat. All rights reserved.
|
|
|
|
using System;
|
|
using System.Collections.Generic;
|
|
using FlaxEditor.Content;
|
|
using FlaxEngine;
|
|
using FlaxEngine.GUI;
|
|
|
|
namespace FlaxEditor.GUI.Drag
|
|
{
|
|
/// <summary>
|
|
/// Assets collection drag handler.
|
|
/// </summary>
|
|
public sealed class DragAssets : DragAssets<DragEventArgs>
|
|
{
|
|
/// <summary>
|
|
/// Initializes a new instance of the <see cref="DragAssets"/> class.
|
|
/// </summary>
|
|
/// <param name="validateFunction">The validation function</param>
|
|
public DragAssets(Func<AssetItem, bool> validateFunction)
|
|
: base(validateFunction)
|
|
{
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Helper class for handling <see cref="AssetItem"/> drag and drop.
|
|
/// </summary>
|
|
/// <seealso cref="AssetItem" />
|
|
public class DragAssets<U> : DragHelper<AssetItem, U> where U : DragEventArgs
|
|
{
|
|
/// <summary>
|
|
/// The default prefix for drag data used for <see cref="ContentItem"/>.
|
|
/// </summary>
|
|
public const string DragPrefix = DragItems<DragEventArgs>.DragPrefix;
|
|
|
|
/// <summary>
|
|
/// Creates a new DragHelper
|
|
/// </summary>
|
|
/// <param name="validateFunction">The validation function</param>
|
|
public DragAssets(Func<AssetItem, bool> validateFunction)
|
|
: base(validateFunction)
|
|
{
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the drag data (finds asset item).
|
|
/// </summary>
|
|
/// <param name="asset">The asset.</param>
|
|
/// <returns>The data.</returns>
|
|
public DragData ToDragData(Asset asset) => GetDragData(asset);
|
|
|
|
/// <inheritdoc/>
|
|
public override DragData ToDragData(AssetItem item) => GetDragData(item);
|
|
|
|
/// <inheritdoc/>
|
|
public override DragData ToDragData(IEnumerable<AssetItem> items) => GetDragData(items);
|
|
|
|
/// <summary>
|
|
/// Gets the drag data.
|
|
/// </summary>
|
|
/// <param name="asset">The asset.</param>
|
|
/// <returns>The data.</returns>
|
|
public static DragData GetDragData(Asset asset)
|
|
{
|
|
return DragItems<DragEventArgs>.GetDragData(Editor.Instance.ContentDatabase.Find(asset.ID));
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the drag data.
|
|
/// </summary>
|
|
/// <param name="item">The item.</param>
|
|
/// <returns>The data.</returns>
|
|
public static DragData GetDragData(AssetItem item)
|
|
{
|
|
return DragItems<DragEventArgs>.GetDragData(item);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the drag data.
|
|
/// </summary>
|
|
/// <param name="items">The items.</param>
|
|
/// <returns>The data.</returns>
|
|
public static DragData GetDragData(IEnumerable<AssetItem> items)
|
|
{
|
|
return DragItems<DragEventArgs>.GetDragData(items);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Tries to parse the drag data to extract <see cref="AssetItem"/> collection.
|
|
/// </summary>
|
|
/// <param name="data">The data.</param>
|
|
/// <returns>Gathered objects or empty array if cannot get any valid.</returns>
|
|
public override IEnumerable<AssetItem> FromDragData(DragData data)
|
|
{
|
|
if (data is DragDataText dataText)
|
|
{
|
|
if (dataText.Text.StartsWith(DragPrefix))
|
|
{
|
|
// Remove prefix and parse spitted names
|
|
var paths = dataText.Text.Remove(0, DragPrefix.Length).Split('\n');
|
|
var results = new List<AssetItem>(paths.Length);
|
|
for (int i = 0; i < paths.Length; i++)
|
|
{
|
|
// Find element
|
|
if (Editor.Instance.ContentDatabase.Find(paths[i]) is AssetItem obj)
|
|
results.Add(obj);
|
|
}
|
|
|
|
return results.ToArray();
|
|
}
|
|
}
|
|
return new AssetItem[0];
|
|
}
|
|
}
|
|
}
|