//
// ClipboardTests.cs
//
// Author:
//       Mike Krüger <mkrueger@xamarin.com>
//
// Copyright (c) 2013 Xamarin Inc. (http://xamarin.com)
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
using System;
using NUnit.Framework;
using System.Linq;
using Gtk;
using MonoDevelop.Core.Text;
using MonoDevelop.Ide.Editor;
using MonoDevelop.Ide.Editor.Extension;
using System.Threading.Tasks;

namespace Mono.TextEditor.Tests
{
	[TestFixture]
	class ClipboardTests : TextEditorTestBase
	{
		#region ITextPasteHandler implementation
		class TestPasteHandler : TextPasteHandler
		{
			public override string FormatPlainText (int offset, string text, byte [] copyData)
			{
				return "Hello World";
			}

			public override byte [] GetCopyData (int offset, int length)
			{
				return null;
			}

			public override Task PostFomatPastedText (int offset, int length)
			{
				return Task.FromResult (true);
			}
		}

		#endregion

		[Test]
		public void TestTextPasteHandler ()
		{
			var data = Create (
				@"$");

			Clipboard clipboard = Clipboard.Get (Mono.TextEditor.ClipboardActions.CopyOperation.CLIPBOARD_ATOM);
			clipboard.Text = "hello";

			data.TextPasteHandler = new TestPasteHandler ();

			ClipboardActions.Paste (data);

			Check (data, @"Hello World$");
		}

		[Test]
		public void TestUndoSteps ()
		{
			var data = Create (
				@"$");
			data.Options.GenerateFormattingUndoStep = true;
			Clipboard clipboard = Clipboard.Get (Mono.TextEditor.ClipboardActions.CopyOperation.CLIPBOARD_ATOM);
			clipboard.Text = "hello";

			data.TextPasteHandler = new TestPasteHandler ();

			ClipboardActions.Paste (data);

			Check (data, @"Hello World$");
			MiscActions.Undo (data);
			Check (data, @"hello$");
			MiscActions.Undo (data);
			Check (data, @"$");
		}

		[Test]
		public void TestUndoSteps_WithoutFormattingStep ()
		{
			var data = Create (
				@"$");
			data.Options.GenerateFormattingUndoStep = false;
			Clipboard clipboard = Clipboard.Get (Mono.TextEditor.ClipboardActions.CopyOperation.CLIPBOARD_ATOM);
			clipboard.Text = "hello";

			data.TextPasteHandler = new TestPasteHandler ();

			ClipboardActions.Paste (data);

			Check (data, @"Hello World$");
			MiscActions.Undo (data);
			Check (data, @"$");
		}

		[Test]
		public void TestPasteDoesntInsertVirtualIndent ()
		{
			var data = VirtualIndentModeTests.CreateData ("");
			data.Options.DefaultEolMarker = "\n";
			data.Caret.Location =  new DocumentLocation (1, data.GetVirtualIndentationColumn (1, 1));
			var clipboard = Clipboard.Get (Mono.TextEditor.ClipboardActions.CopyOperation.CLIPBOARD_ATOM);
			clipboard.Text = "\n\n";

			ClipboardActions.Paste (data);

			Assert.AreEqual ("\n\n", data.Document.Text);
		}

	}
}