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// Copyright (c) AlphaSierraPapa for the SharpDevelop Team (for details please see \doc\copyright.txt)
// This code is distributed under the GNU LGPL (for details please see \doc\license.txt)
using System;
using System.Runtime.Serialization;
using System.Windows.Input;
using ICSharpCode.AvalonEdit.Document;
namespace ICSharpCode.AvalonEdit.Snippets
{
/// <summary>
/// Sets the caret position after interactive mode has finished.
/// </summary>
[Serializable]
public class SnippetCaretElement : SnippetElement
{
[OptionalField]
bool setCaretOnlyIfTextIsSelected;
/// <summary>
/// Creates a new SnippetCaretElement.
/// </summary>
public SnippetCaretElement()
{
}
/// <summary>
/// Creates a new SnippetCaretElement.
/// </summary>
/// <param name="setCaretOnlyIfTextIsSelected">
/// If set to true, the caret is set only when some text was selected.
/// This is useful when both SnippetCaretElement and SnippetSelectionElement are used in the same snippet.
/// </param>
public SnippetCaretElement(bool setCaretOnlyIfTextIsSelected)
{
this.setCaretOnlyIfTextIsSelected = setCaretOnlyIfTextIsSelected;
}
/// <inheritdoc/>
public override void Insert(InsertionContext context)
{
if (!setCaretOnlyIfTextIsSelected || !string.IsNullOrEmpty(context.SelectedText))
SetCaret(context);
}
internal static void SetCaret(InsertionContext context)
{
TextAnchor pos = context.Document.CreateAnchor(context.InsertionPosition);
pos.MovementType = AnchorMovementType.BeforeInsertion;
pos.SurviveDeletion = true;
context.Deactivated += (sender, e) => {
if (e.Reason == DeactivateReason.ReturnPressed || e.Reason == DeactivateReason.NoActiveElements) {
context.TextArea.Caret.Offset = pos.Offset;
}
};
}
}
}
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