code clean up

src/EditorFeatures/Core.Wpf/QuickInfo/QuickInfoDisplayPanel.cs

-// Copyright (c) Microsoft.  All Rights Reserved.  Licensed under the Apache License, Version 2.0.  See License.txt in the project root for license information.
-
-using System;
-using System.Collections.Immutable;
-using System.Linq;
-using System.Text;
-using System.Windows;
-using System.Windows.Controls;
-using System.Windows.Documents;
-using System.Windows.Media;
-using Microsoft.CodeAnalysis.QuickInfo;
-
-namespace Microsoft.CodeAnalysis.Editor.QuickInfo
-{
-    internal class QuickInfoDisplayPanel : StackPanel
-    {
-        private ImmutableArray<TextBlockElement> _textBlocks;
-
-        internal TextBlock MainDescription => _textBlocks.FirstOrDefault(tb => tb.Kind == QuickInfoSectionKinds.Description)?.Block;
-        internal TextBlock Documentation => _textBlocks.FirstOrDefault(tb => tb.Kind == QuickInfoSectionKinds.DocumentationComments)?.Block;
-        internal TextBlock TypeParameterMap => _textBlocks.FirstOrDefault(tb => tb.Kind == QuickInfoSectionKinds.TypeParameters)?.Block;
-        internal TextBlock AnonymousTypes => _textBlocks.FirstOrDefault(tb => tb.Kind == QuickInfoSectionKinds.AnonymousTypes)?.Block;
-        internal TextBlock UsageText => _textBlocks.FirstOrDefault(tb => tb.Kind == QuickInfoSectionKinds.Usage)?.Block;
-        internal TextBlock ExceptionText => _textBlocks.FirstOrDefault(tb => tb.Kind == QuickInfoSectionKinds.Exception)?.Block;
-
-        public QuickInfoDisplayPanel(
-            FrameworkElement symbolGlyph,
-            FrameworkElement warningGlyph,
-            ImmutableArray<TextBlockElement> textBlocks,
-            FrameworkElement documentSpan)
-        {
-            _textBlocks = textBlocks;
-
-            this.Orientation = Orientation.Vertical;
-
-            for (int i = 0; i < _textBlocks.Length; i++)
-            {
-                var tb = _textBlocks[i];
-                if (i == 0)
-                {
-                    this.Children.Add(AddGlyphs(tb.Block, symbolGlyph, warningGlyph));
-                }
-                else
-                {
-                    this.Children.Add(tb.Block);
-                }
-            }
-
-            if (documentSpan != null)
-            {
-                this.Children.Add(documentSpan);
-            }
-        }
-
-        private static FrameworkElement AddGlyphs(TextBlock tb, FrameworkElement symbolGlyph, FrameworkElement warningGlyph)
-        {
-            var panel = new DockPanel()
-            {
-                LastChildFill = true,
-                HorizontalAlignment = HorizontalAlignment.Stretch,
-                Background = Brushes.Transparent
-            };
-
-            if (symbolGlyph != null)
-            {
-                symbolGlyph.Margin = new Thickness(1, 1, 3, 1);
-                var symbolGlyphBorder = new Border()
-                {
-                    BorderThickness = new Thickness(0),
-                    BorderBrush = Brushes.Transparent,
-                    VerticalAlignment = VerticalAlignment.Top,
-                    Child = symbolGlyph
-                };
-
-                panel.Children.Add(symbolGlyphBorder);
-            }
-
-            tb.Margin = new Thickness(1);
-            var mainDescriptionBorder = new Border()
-            {
-                BorderThickness = new Thickness(0),
-                BorderBrush = Brushes.Transparent,
-                VerticalAlignment = VerticalAlignment.Center,
-                Child = tb
-            };
-
-            panel.Children.Add(mainDescriptionBorder);
-
-            if (warningGlyph != null)
-            {
-                warningGlyph.Margin = new Thickness(1, 1, 3, 1);
-                var warningGlyphBorder = new Border()
-                {
-                    BorderThickness = new Thickness(0),
-                    BorderBrush = Brushes.Transparent,
-                    VerticalAlignment = VerticalAlignment.Center,
-                    HorizontalAlignment = HorizontalAlignment.Right,
-                    Child = warningGlyph
-                };
-
-                panel.Children.Add(warningGlyphBorder);
-            }
-
-            return panel;
-        }
-
-        public override string ToString()
-        {
-            var sb = new StringBuilder();
-
-            foreach (var tb in _textBlocks)
-            {
-                if (sb.Length > 0)
-                {
-                    sb.AppendLine();
-                }
-
-                BuildStringFromInlineCollection(tb.Block.Inlines, sb);
-            }
-
-            return sb.ToString();
-        }
-
-        private static void BuildStringFromInlineCollection(InlineCollection inlines, StringBuilder sb)
-        {
-            foreach (var inline in inlines)
-            {
-                if (inline != null)
-                {
-                    var inlineText = GetStringFromInline(inline);
-                    if (!string.IsNullOrEmpty(inlineText))
-                    {
-                        sb.Append(inlineText);
-                    }
-                }
-            }
-        }
-
-        private static string GetStringFromInline(Inline currentInline)
-        {
-            if (currentInline is LineBreak lineBreak)
-            {
-                return Environment.NewLine;
-            }
-
-            var run = currentInline as Run;
-            if (run == null)
-            {
-                return null;
-            }
-
-            return run.Text;
-        }
-    }
-}

src/EditorFeatures/Core.Wpf/QuickInfo/TextBlockElement.cs

-// Copyright (c) Microsoft.  All Rights Reserved.  Licensed under the Apache License, Version 2.0.  See License.txt in the project root for license information.
-
-using System.Windows.Controls;
-
-namespace Microsoft.CodeAnalysis.Editor.QuickInfo
-{
-    /// <summary>
-    /// Holds the <see cref="TextBlock"/> for a particular <see cref="Microsoft.CodeAnalysis.QuickInfo.QuickInfoSectionKinds">QuickInfoSectionKind</see>.
-    /// </summary>
-    internal class TextBlockElement
-    {
-        public string Kind { get; }
-        public TextBlock Block { get; }
-
-        public TextBlockElement(string kind, TextBlock block)
-        {
-            Kind = kind;
-            Block = block;
-        }
-    }
-}

src/EditorFeatures/Core/CommandHandlers/QuickInfoCommandHandlerAndSourceProvider.QuickInfoSource.cs

@@ -23,12 +23,6 @@ public QuickInfoSource(QuickInfoCommandHandlerAndSourceProvider commandHandler,
 
             public Task<QuickInfoItem> GetQuickInfoItemAsync(IAsyncQuickInfoSession session, CancellationToken cancellationToken)
             {
-                if (session.Properties.TryGetProperty(QuickInfoUtilities.EventHookupKey, out object eventHookupValue))
-                {
-                    // No quickinfo if it's the event hookup popup.
-                    return Task.FromResult<QuickInfoItem>(null);
-                }
-
                 var triggerPoint = session.GetTriggerPoint(_subjectBuffer.CurrentSnapshot);
                 if (triggerPoint != null && triggerPoint.HasValue)
                 {