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Viewing changes to src/Libraries/AvalonEdit/ICSharpCode.AvalonEdit/CodeCompletion/InsightWindow.cs

  • Committer: sk
  • Date: 2011-09-10 05:17:57 UTC
  • Revision ID: halega@halega.com-20110910051757-qfouz1llya9m6boy
4.1.0.7915 Release Candidate 1

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src/Libraries/AvalonEdit/ICSharpCode.AvalonEdit/CodeCompletion/InsightWindow.cs
 
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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.Windows;
 
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using System.Windows.Controls;
 
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using ICSharpCode.AvalonEdit.Editing;
 
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using ICSharpCode.AvalonEdit.Utils;
 
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namespace ICSharpCode.AvalonEdit.CodeCompletion
 
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{
 
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        /// <summary>
 
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        /// A popup-like window that is attached to a text segment.
 
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        /// </summary>
 
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        public class InsightWindow : CompletionWindowBase
 
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        {
 
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                static InsightWindow()
 
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                {
 
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                        DefaultStyleKeyProperty.OverrideMetadata(typeof(InsightWindow),
 
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                                                                 new FrameworkPropertyMetadata(typeof(InsightWindow)));
 
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                        AllowsTransparencyProperty.OverrideMetadata(typeof(InsightWindow),
 
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                                                                    new FrameworkPropertyMetadata(Boxes.True));
 
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                }
 
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                /// <summary>
 
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                /// Creates a new InsightWindow.
 
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                /// </summary>
 
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                public InsightWindow(TextArea textArea) : base(textArea)
 
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                {
 
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                        this.CloseAutomatically = true;
 
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                        AttachEvents();
 
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                        Rect caret = this.TextArea.Caret.CalculateCaretRectangle();
 
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                        Rect workingArea = System.Windows.Forms.Screen.FromPoint(caret.Location.ToSystemDrawing()).WorkingArea.ToWpf();
 
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                        MaxHeight = workingArea.Height;
 
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                        MaxWidth = Math.Min(workingArea.Width, Math.Max(1000, workingArea.Width * 0.6));
 
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                }
 
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                /// <summary>
 
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                /// Gets/Sets whether the insight window should close automatically.
 
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                /// The default value is true.
 
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                /// </summary>
 
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                public bool CloseAutomatically { get; set; }
 
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                /// <inheritdoc/>
 
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                protected override bool CloseOnFocusLost {
 
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                        get { return this.CloseAutomatically; }
 
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                }
 
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                void AttachEvents()
 
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                {
 
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                        this.TextArea.Caret.PositionChanged += CaretPositionChanged;
 
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                }
 
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                /// <inheritdoc/>
 
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                protected override void DetachEvents()
 
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                {
 
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                        this.TextArea.Caret.PositionChanged -= CaretPositionChanged;
 
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                        base.DetachEvents();
 
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                }
 
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                void CaretPositionChanged(object sender, EventArgs e)
 
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                {
 
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                        if (this.CloseAutomatically) {
 
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                                int offset = this.TextArea.Caret.Offset;
 
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                                if (offset < this.StartOffset || offset > this.EndOffset) {
 
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                                        Close();
 
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                                }
 
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                        }
 
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                }
 
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        }
 
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        /// <summary>
 
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        /// TemplateSelector for InsightWindow to replace plain string content by a TextBlock with TextWrapping.
 
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        /// </summary>
 
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        internal sealed class InsightWindowTemplateSelector : DataTemplateSelector
 
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        {
 
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                /// <inheritdoc/>
 
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                public override DataTemplate SelectTemplate(object item, DependencyObject container)
 
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                {
 
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                        if (item is string)
 
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                                return (DataTemplate)((FrameworkElement)container).FindResource("TextBlockTemplate");
 
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                        return null;
 
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                }
 
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        }
 
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}