Move MatterControl source code into a subdirectory

original/MatterControlLib/Library/OnDemandLibraryItem.cs

@@ -0,0 +1,109 @@
+/*
+Copyright (c) 2018, John Lewin
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+1. Redistributions of source code must retain the above copyright notice, this
+   list of conditions and the following disclaimer.
+2. Redistributions in binary form must reproduce the above copyright notice,
+   this list of conditions and the following disclaimer in the documentation
+   and/or other materials provided with the distribution.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
+ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+The views and conclusions contained in the software and documentation are those
+of the authors and should not be interpreted as representing official policies,
+either expressed or implied, of the FreeBSD Project.
+*/
+
+using System;
+using System.IO;
+using System.Threading.Tasks;
+using MatterHackers.DataConverters3D;
+using MatterHackers.Localizations;
+
+namespace MatterHackers.MatterControl.Library
+{
+	public class OnDemandLibraryItem : ILibraryAssetStream
+	{
+		public OnDemandLibraryItem(string name)
+		{
+			this.Name = name ?? "Unknown".Localize();
+
+			// TODO: Fix cheat this quick hack which in the short term naively allows IsContentFileType to return true and drag/drop to succeed
+			this.ContentType = "mcx";
+		}
+
+		public string ID => Guid.NewGuid().ToString();
+
+		private string _name;
+		public string Name
+		{
+			get => _name; set
+			{
+				if (_name != value)
+				{
+					_name = value;
+					NameChanged?.Invoke(this, EventArgs.Empty);
+				}
+			}
+		}
+
+		public event EventHandler NameChanged;
+
+		public string FileName => $"{this.Name}.{this.ContentType}";
+
+		public bool IsProtected => false;
+
+		public bool IsVisible => true;
+
+		public DateTime DateCreated { get; } = DateTime.Now;
+
+		public DateTime DateModified { get; } = DateTime.Now;
+
+		public string ContentType { get; set; }
+
+		public string Category => "General";
+
+		public string AssetPath { get; set; }
+
+		public long FileSize => -1;
+
+		public bool LocalContentExists => false;
+
+		public async Task<StreamAndLength> GetStream(Action<double, string> progress)
+		{
+			return new StreamAndLength()
+			{
+				Stream = await ToStream()
+			};
+		}
+
+		public Func<Task<IObject3D>> Object3DProvider { get; set; }
+
+		private async Task<MemoryStream> ToStream()
+		{
+			// Serialize to in memory stream
+			var memoryStream = new MemoryStream();
+
+			var object3D = await this.Object3DProvider();
+			object3D.SaveTo(memoryStream);
+
+			// Reset to start of content
+			memoryStream.Position = 0;
+
+			return memoryStream;
+		}
+	}
+}