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