Mirror the src/Editor folder structure from VS-Platform

76 files changed, 1037 insertions, 0 deletions

diff --git a/src/Editor/Text/Def/TextUI/Commanding/CommandArgs.cs b/src/Editor/Text/Def/TextUI/Commanding/CommandArgs.cs
new file mode 100644
index 0000000..ea4b4e2
--- /dev/null
+++ b/src/Editor/Text/Def/TextUI/Commanding/CommandArgs.cs
@@ -0,0 +1,9 @@
+namespace Microsoft.VisualStudio.Commanding
+{
+    /// <summary>
+    /// A base class for all command arguments.
+    /// </summary>
+    public abstract class CommandArgs
+    {
+    }
+}
diff --git a/src/Editor/Text/Def/TextUI/Commanding/CommandExecutionContext.cs b/src/Editor/Text/Def/TextUI/Commanding/CommandExecutionContext.cs
new file mode 100644
index 0000000..f39cd55
--- /dev/null
+++ b/src/Editor/Text/Def/TextUI/Commanding/CommandExecutionContext.cs
@@ -0,0 +1,27 @@
+using System;
+using Microsoft.VisualStudio.Utilities;
+
+namespace Microsoft.VisualStudio.Commanding
+{
+    /// <summary>
+    /// Represents a command execution context, which is set up by a command handler service
+    /// and provided to each command handler.
+    /// </summary>
+    public sealed class CommandExecutionContext
+    {
+        /// <summary>
+        /// Creates new instance of the <see cref="CommandExecutionContext"/>.
+        /// </summary>
+        public CommandExecutionContext(IUIThreadOperationContext waitContext)
+        {
+            this.WaitContext = waitContext ?? throw new ArgumentNullException(nameof(waitContext));
+        }
+
+        /// <summary>
+        /// Provides a context of executing a command handler on the UI thread, which
+        /// enables two way shared cancellability and wait indication.
+        /// </summary>
+        public IUIThreadOperationContext WaitContext { get; }
+    }
+}
+
diff --git a/src/Editor/Text/Def/TextUI/Commanding/CommandHandlerExtensions.cs b/src/Editor/Text/Def/TextUI/Commanding/CommandHandlerExtensions.cs
new file mode 100644
index 0000000..a4afd58
--- /dev/null
+++ b/src/Editor/Text/Def/TextUI/Commanding/CommandHandlerExtensions.cs
@@ -0,0 +1,123 @@
+using System;
+
+namespace Microsoft.VisualStudio.Commanding
+{
+    /// <summary>
+    /// Contains command handler utility extension methods.
+    /// </summary>
+    public static class CommandHandlerExtensions
+    {
+        /// <summary>
+        /// Called to determine the state of the command.
+        /// </summary>
+        /// <remarks>
+        /// <para>
+        /// A command handler can implement <see cref="ICommandHandler{T}"/> or
+        /// <see cref="IChainedCommandHandler{T}"/>, but either way this method returns
+        /// the final state of the command as returned by either this or next
+        /// command handler.
+        /// </para>
+        /// <para>If <paramref name="commandHandler"/> implements <see cref="ICommandHandler{T}"/>,
+        /// its <see cref="ICommandHandler{T}.GetCommandState(T)"/> method is called. If it returns
+        /// <see cref="CommandState.Unspecified"/>, <paramref name="nextCommandHandler"/> is invoked.
+        ///</para>
+        ///<para>
+        /// If <paramref name="commandHandler"/> implements <see cref="IChainedCommandHandler{T}"/>,
+        /// its <see cref="IChainedCommandHandler{T}.GetCommandState(T, Func{CommandState})"/> method is invoked with
+        /// <paramref name="nextCommandHandler"/> passed as an argument.
+        ///</para>
+        /// </remarks>
+        /// <param name="args">The <see cref="CommandArgs"/> arguments for the command.</param>
+        /// <param name="nextCommandHandler">The next command handler in the command execution chain.</param>
+        /// <param name="commandHandler">A command handler to query the state of the command.</param>
+        /// <returns>A <see cref="CommandState"/> instance that contains information on the availability of the command.</returns>
+        public static CommandState GetCommandState<T>(this ICommandHandler commandHandler, T args, Func<CommandState> nextCommandHandler) where T : CommandArgs
+        {
+            if (commandHandler == null)
+            {
+                throw new ArgumentNullException(nameof(commandHandler));
+            }
+
+            if (nextCommandHandler == null)
+            {
+                throw new ArgumentNullException(nameof(nextCommandHandler));
+            }
+
+            if (commandHandler is ICommandHandler<T> simpleCommandHandler)
+            {
+                var commandState = simpleCommandHandler.GetCommandState(args);
+                if (commandState.IsUnspecified)
+                {
+                    return nextCommandHandler();
+                }
+
+                return commandState;
+            }
+
+            if (commandHandler is IChainedCommandHandler<T> chainedCommandHandler)
+            {
+                return chainedCommandHandler.GetCommandState(args, nextCommandHandler);
+            }
+
+            throw new ArgumentException($"Unsupported CommandHandler type: {commandHandler.GetType()}");
+        }
+
+        /// <summary>
+        /// Called to execute the command.
+        /// </summary>
+        /// <remarks>
+        /// <para>
+        /// A command handler can implement <see cref="ICommandHandler{T}"/> or
+        /// <see cref="IChainedCommandHandler{T}"/>, but either way this method executes
+        /// the command by either this or next command handler.
+        /// </para>
+        /// <para>If <paramref name="commandHandler"/> implements <see cref="ICommandHandler{T}"/>,
+        /// its <see cref="ICommandHandler{T}.ExecuteCommand(T, CommandExecutionContext)"/> method is called. If it returns
+        /// <c>false</c>, <paramref name="nextCommandHandler"/> is invoked.
+        ///</para>
+        ///<para>
+        /// If <paramref name="commandHandler"/> implements <see cref="IChainedCommandHandler{T}"/>,
+        /// its <see cref="IChainedCommandHandler{T}.ExecuteCommand(T, Action, CommandExecutionContext)"/> method is invoked with
+        /// <paramref name="nextCommandHandler"/> passed as an argument.
+        ///</para>
+        /// </remarks>
+        /// <param name="args">The <see cref="CommandArgs"/> arguments for the command.</param>
+        /// <param name="nextCommandHandler">The next command handler in the command execution chain.</param>
+        /// <param name="commandHandler">A command handler to execute the command.</param>
+        /// <param name="executionContext">Current command execution context.</param>
+        public static void ExecuteCommand<T>(this ICommandHandler commandHandler, T args, Action nextCommandHandler, CommandExecutionContext executionContext) where T : CommandArgs
+        {
+            if (commandHandler == null)
+            {
+                throw new ArgumentNullException(nameof(commandHandler));
+            }
+
+            if (nextCommandHandler == null)
+            {
+                throw new ArgumentNullException(nameof(nextCommandHandler));
+            }
+
+            if (commandHandler is ICommandHandler<T> simpleCommandHandler)
+            {
+                if (simpleCommandHandler.ExecuteCommand(args, executionContext))
+                {
+                    return;
+                }
+                else
+                {
+                    nextCommandHandler();
+                    return;
+                }
+            }
+
+            if (commandHandler is IChainedCommandHandler<T> chainedCommandHandler)
+            {
+                chainedCommandHandler.ExecuteCommand(args, nextCommandHandler, executionContext);
+                return;
+            }
+
+            throw new ArgumentException($"Unsupported CommandHandler type: {commandHandler.GetType()}");
+        }
+    }
+}
+
diff --git a/src/Editor/Text/Def/TextUI/Commanding/CommandState.cs b/src/Editor/Text/Def/TextUI/Commanding/CommandState.cs
new file mode 100644
index 0000000..93680c1
--- /dev/null
+++ b/src/Editor/Text/Def/TextUI/Commanding/CommandState.cs
@@ -0,0 +1,55 @@
+using System;
+
+namespace Microsoft.VisualStudio.Commanding
+{
+    public struct CommandState
+    {
+        /// <summary>
+        /// If true, the command state is unspecified and should not be taken into account.
+        /// </summary>
+        public bool IsUnspecified { get; }
+
+        /// <summary>
+        /// If true, the command should be visible and enabled in the UI.
+        /// </summary>
+        public bool IsAvailable { get; }
+
+        /// <summary>
+        /// If true, the command should appear as checked (i.e. toggled) in the UI.
+        /// </summary>
+        public bool IsChecked { get; }
+
+        /// <summary>
+        /// If specified, returns the custom text that should be displayed in the UI.
+        /// </summary>
+        public string DisplayText { get; }
+
+        public CommandState(bool isAvailable = false, bool isChecked = false, string displayText = null, bool isUnspecified = false)
+        {
+            if (isUnspecified && (isAvailable || isChecked || displayText != null))
+            {
+                throw new ArgumentException("Unspecified command state cannot be combined with other states or command text.");
+            }
+
+            this.IsAvailable = isAvailable;
+            this.IsChecked = isChecked;
+            this.IsUnspecified = isUnspecified;
+            this.DisplayText = displayText;
+        }
+
+        /// <summary>
+        /// A helper singleton representing an available command state.
+        /// </summary>
+        public static CommandState Available { get; } = new CommandState(isAvailable: true);
+
+        /// <summary>
+        /// A helper singleton representing an unavailable command state.
+        /// </summary>
+        public static CommandState Unavailable { get; } = new CommandState(isAvailable: false);
+
+        /// <summary>
+        /// A helper singleton representing an unspecified command state.
+        /// </summary>
+        public static CommandState Unspecified { get; } = new CommandState(isUnspecified: true);
+    }
+}
diff --git a/src/Editor/Text/Def/TextUI/Commanding/Commands/AutomaticLineEnderCommandArgs.cs b/src/Editor/Text/Def/TextUI/Commanding/Commands/AutomaticLineEnderCommandArgs.cs
new file mode 100644
index 0000000..dca0d0c
--- /dev/null
+++ b/src/Editor/Text/Def/TextUI/Commanding/Commands/AutomaticLineEnderCommandArgs.cs
@@ -0,0 +1,9 @@
+namespace Microsoft.VisualStudio.Text.Editor.Commanding.Commands
+{
+    public sealed class AutomaticLineEnderCommandArgs : EditorCommandArgs
+    {
+        public AutomaticLineEnderCommandArgs(ITextView textView, ITextBuffer subjectBuffer) : base(textView, subjectBuffer)
+        {
+        }
+    }
+}
diff --git a/src/Editor/Text/Def/TextUI/Commanding/Commands/BackTabKeyCommandArgs.cs b/src/Editor/Text/Def/TextUI/Commanding/Commands/BackTabKeyCommandArgs.cs
new file mode 100644
index 0000000..eeea83d
--- /dev/null
+++ b/src/Editor/Text/Def/TextUI/Commanding/Commands/BackTabKeyCommandArgs.cs
@@ -0,0 +1,9 @@
+namespace Microsoft.VisualStudio.Text.Editor.Commanding.Commands
+{
+    public sealed class BackTabKeyCommandArgs : EditorCommandArgs
+    {
+        public BackTabKeyCommandArgs(ITextView textView, ITextBuffer subjectBuffer) : base(textView, subjectBuffer)
+        {
+        }
+    }
+}
diff --git a/src/Editor/Text/Def/TextUI/Commanding/Commands/BackspaceKeyCommandArgs.cs b/src/Editor/Text/Def/TextUI/Commanding/Commands/BackspaceKeyCommandArgs.cs
new file mode 100644
index 0000000..5808047
--- /dev/null
+++ b/src/Editor/Text/Def/TextUI/Commanding/Commands/BackspaceKeyCommandArgs.cs
@@ -0,0 +1,9 @@
+namespace Microsoft.VisualStudio.Text.Editor.Commanding.Commands
+{
+    public sealed class BackspaceKeyCommandArgs : EditorCommandArgs
+    {
+        public BackspaceKeyCommandArgs(ITextView textView, ITextBuffer subjectBuffer) : base(textView, subjectBuffer)
+        {
+        }
+    }
+}
diff --git a/src/Editor/Text/Def/TextUI/Commanding/Commands/CommentSelectionCommandArgs.cs b/src/Editor/Text/Def/TextUI/Commanding/Commands/CommentSelectionCommandArgs.cs
new file mode 100644
index 0000000..5072200
--- /dev/null
+++ b/src/Editor/Text/Def/TextUI/Commanding/Commands/CommentSelectionCommandArgs.cs
@@ -0,0 +1,9 @@
+namespace Microsoft.VisualStudio.Text.Editor.Commanding.Commands
+{
+    public sealed class CommentSelectionCommandArgs : EditorCommandArgs
+    {
+        public CommentSelectionCommandArgs(ITextView textView, ITextBuffer subjectBuffer) : base(textView, subjectBuffer)
+        {
+        }
+    }
+}
diff --git a/src/Editor/Text/Def/TextUI/Commanding/Commands/CommitUniqueCompletionListItemCommandArgs.cs b/src/Editor/Text/Def/TextUI/Commanding/Commands/CommitUniqueCompletionListItemCommandArgs.cs
new file mode 100644
index 0000000..48c34f5
--- /dev/null
+++ b/src/Editor/Text/Def/TextUI/Commanding/Commands/CommitUniqueCompletionListItemCommandArgs.cs
@@ -0,0 +1,9 @@
+namespace Microsoft.VisualStudio.Text.Editor.Commanding.Commands
+{
+    public sealed class CommitUniqueCompletionListItemCommandArgs : EditorCommandArgs
+    {
+        public CommitUniqueCompletionListItemCommandArgs(ITextView textView, ITextBuffer subjectBuffer) : base(textView, subjectBuffer)
+        {
+        }
+    }
+}
diff --git a/src/Editor/Text/Def/TextUI/Commanding/Commands/ContractSelectionCommandArgs.cs b/src/Editor/Text/Def/TextUI/Commanding/Commands/ContractSelectionCommandArgs.cs
new file mode 100644
index 0000000..038e9e3
--- /dev/null
+++ b/src/Editor/Text/Def/TextUI/Commanding/Commands/ContractSelectionCommandArgs.cs
@@ -0,0 +1,9 @@
+namespace Microsoft.VisualStudio.Text.Editor.Commanding.Commands
+{
+    public sealed class ContractSelectionCommandArgs: EditorCommandArgs
+    {
+        public ContractSelectionCommandArgs(ITextView textView, ITextBuffer subjectBuffer) : base(textView, subjectBuffer)
+        {
+        }
+    }
+}
diff --git a/src/Editor/Text/Def/TextUI/Commanding/Commands/CopyCommandArgs.cs b/src/Editor/Text/Def/TextUI/Commanding/Commands/CopyCommandArgs.cs
new file mode 100644
index 0000000..47037f1
--- /dev/null
+++ b/src/Editor/Text/Def/TextUI/Commanding/Commands/CopyCommandArgs.cs
@@ -0,0 +1,9 @@
+namespace Microsoft.VisualStudio.Text.Editor.Commanding.Commands
+{
+    public sealed class CopyCommandArgs : EditorCommandArgs
+    {
+        public CopyCommandArgs(ITextView textView, ITextBuffer subjectBuffer) : base(textView, subjectBuffer)
+        {
+        }
+    }
+}
diff --git a/src/Editor/Text/Def/TextUI/Commanding/Commands/CopyToInteractiveCommandArgs.cs b/src/Editor/Text/Def/TextUI/Commanding/Commands/CopyToInteractiveCommandArgs.cs
new file mode 100644
index 0000000..4351246
--- /dev/null
+++ b/src/Editor/Text/Def/TextUI/Commanding/Commands/CopyToInteractiveCommandArgs.cs
@@ -0,0 +1,9 @@
+namespace Microsoft.VisualStudio.Text.Editor.Commanding.Commands
+{
+    public sealed class CopyToInteractiveCommandArgs : EditorCommandArgs
+    {
+        public CopyToInteractiveCommandArgs(ITextView textView, ITextBuffer subjectBuffer) : base(textView, subjectBuffer)
+        {
+        }
+    }
+}
diff --git a/src/Editor/Text/Def/TextUI/Commanding/Commands/CutCommandArgs.cs b/src/Editor/Text/Def/TextUI/Commanding/Commands/CutCommandArgs.cs
new file mode 100644
index 0000000..fb60598
--- /dev/null
+++ b/src/Editor/Text/Def/TextUI/Commanding/Commands/CutCommandArgs.cs
@@ -0,0 +1,9 @@
+namespace Microsoft.VisualStudio.Text.Editor.Commanding.Commands
+{
+    public sealed class CutCommandArgs : EditorCommandArgs
+    {
+        public CutCommandArgs(ITextView textView, ITextBuffer subjectBuffer) : base(textView, subjectBuffer)
+        {
+        }
+    }
+}
diff --git a/src/Editor/Text/Def/TextUI/Commanding/Commands/DeleteKeyCommandArgs.cs b/src/Editor/Text/Def/TextUI/Commanding/Commands/DeleteKeyCommandArgs.cs
new file mode 100644
index 0000000..434ab6f
--- /dev/null
+++ b/src/Editor/Text/Def/TextUI/Commanding/Commands/DeleteKeyCommandArgs.cs
@@ -0,0 +1,9 @@
+namespace Microsoft.VisualStudio.Text.Editor.Commanding.Commands
+{
+    public sealed class DeleteKeyCommandArgs : EditorCommandArgs
+    {
+        public DeleteKeyCommandArgs(ITextView textView, ITextBuffer subjectBuffer) : base(textView, subjectBuffer)
+        {
+        }
+    }
+}
diff --git a/src/Editor/Text/Def/TextUI/Commanding/Commands/DocumentEndCommandArgs.cs b/src/Editor/Text/Def/TextUI/Commanding/Commands/DocumentEndCommandArgs.cs
new file mode 100644
index 0000000..657e6ae
--- /dev/null
+++ b/src/Editor/Text/Def/TextUI/Commanding/Commands/DocumentEndCommandArgs.cs
@@ -0,0 +1,9 @@
+namespace Microsoft.VisualStudio.Text.Editor.Commanding.Commands
+{
+    public sealed class DocumentEndCommandArgs : EditorCommandArgs
+    {
+        public DocumentEndCommandArgs(ITextView textView, ITextBuffer subjectBuffer) : base(textView, subjectBuffer)
+        {
+        }
+    }
+}
diff --git a/src/Editor/Text/Def/TextUI/Commanding/Commands/DocumentStartCommandArgs.cs b/src/Editor/Text/Def/TextUI/Commanding/Commands/DocumentStartCommandArgs.cs
new file mode 100644
index 0000000..b8bc5d4
--- /dev/null
+++ b/src/Editor/Text/Def/TextUI/Commanding/Commands/DocumentStartCommandArgs.cs
@@ -0,0 +1,9 @@
+namespace Microsoft.VisualStudio.Text.Editor.Commanding.Commands
+{
+    public sealed class DocumentStartCommandArgs : EditorCommandArgs
+    {
+        public DocumentStartCommandArgs(ITextView textView, ITextBuffer subjectBuffer) : base(textView, subjectBuffer)
+        {
+        }
+    }
+}
diff --git a/src/Editor/Text/Def/TextUI/Commanding/Commands/DownKeyCommandArgs.cs b/src/Editor/Text/Def/TextUI/Commanding/Commands/DownKeyCommandArgs.cs
new file mode 100644
index 0000000..7f2ed81
--- /dev/null
+++ b/src/Editor/Text/Def/TextUI/Commanding/Commands/DownKeyCommandArgs.cs
@@ -0,0 +1,9 @@
+namespace Microsoft.VisualStudio.Text.Editor.Commanding.Commands
+{
+    public sealed class DownKeyCommandArgs : EditorCommandArgs
+    {
+        public DownKeyCommandArgs(ITextView textView, ITextBuffer subjectBuffer) : base(textView, subjectBuffer)
+        {
+        }
+    }
+}
diff --git a/src/Editor/Text/Def/TextUI/Commanding/Commands/DuplicateSelectionCommandArgs.cs b/src/Editor/Text/Def/TextUI/Commanding/Commands/DuplicateSelectionCommandArgs.cs
new file mode 100644
index 0000000..12b6628
--- /dev/null
+++ b/src/Editor/Text/Def/TextUI/Commanding/Commands/DuplicateSelectionCommandArgs.cs
@@ -0,0 +1,9 @@
+namespace Microsoft.VisualStudio.Text.Editor.Commanding.Commands
+{
+    public sealed class DuplicateSelectionCommandArgs: EditorCommandArgs
+    {
+        public DuplicateSelectionCommandArgs(ITextView textView, ITextBuffer subjectBuffer) : base(textView, subjectBuffer)
+        {
+        }
+    }
+}
diff --git a/src/Editor/Text/Def/TextUI/Commanding/Commands/EncapsulateFieldCommandArgs.cs b/src/Editor/Text/Def/TextUI/Commanding/Commands/EncapsulateFieldCommandArgs.cs
new file mode 100644
index 0000000..13786b1
--- /dev/null
+++ b/src/Editor/Text/Def/TextUI/Commanding/Commands/EncapsulateFieldCommandArgs.cs
@@ -0,0 +1,9 @@
+namespace Microsoft.VisualStudio.Text.Editor.Commanding.Commands
+{
+    public sealed class EncapsulateFieldCommandArgs : EditorCommandArgs
+    {
+        public EncapsulateFieldCommandArgs(ITextView textView, ITextBuffer subjectBuffer) : base(textView, subjectBuffer)
+        {
+        }
+    }
+}
diff --git a/src/Editor/Text/Def/TextUI/Commanding/Commands/EscapeKeyCommandArgs.cs b/src/Editor/Text/Def/TextUI/Commanding/Commands/EscapeKeyCommandArgs.cs
new file mode 100644
index 0000000..7f7e30c
--- /dev/null
+++ b/src/Editor/Text/Def/TextUI/Commanding/Commands/EscapeKeyCommandArgs.cs
@@ -0,0 +1,9 @@
+namespace Microsoft.VisualStudio.Text.Editor.Commanding.Commands
+{
+    public sealed class EscapeKeyCommandArgs : EditorCommandArgs
+    {
+        public EscapeKeyCommandArgs(ITextView textView, ITextBuffer subjectBuffer) : base(textView, subjectBuffer)
+        {
+        }
+    }
+}
diff --git a/src/Editor/Text/Def/TextUI/Commanding/Commands/ExecuteInInteractiveCommandArgs.cs b/src/Editor/Text/Def/TextUI/Commanding/Commands/ExecuteInInteractiveCommandArgs.cs
new file mode 100644
index 0000000..8ea34f7
--- /dev/null
+++ b/src/Editor/Text/Def/TextUI/Commanding/Commands/ExecuteInInteractiveCommandArgs.cs
@@ -0,0 +1,9 @@
+namespace Microsoft.VisualStudio.Text.Editor.Commanding.Commands
+{
+    public sealed class ExecuteInInteractiveCommandArgs : EditorCommandArgs
+    {
+        public ExecuteInInteractiveCommandArgs(ITextView textView, ITextBuffer subjectBuffer) : base(textView, subjectBuffer)
+        {
+        }
+    }
+}
diff --git a/src/Editor/Text/Def/TextUI/Commanding/Commands/ExpandSelectionCommandArgs.cs b/src/Editor/Text/Def/TextUI/Commanding/Commands/ExpandSelectionCommandArgs.cs
new file mode 100644
index 0000000..7526f19
--- /dev/null
+++ b/src/Editor/Text/Def/TextUI/Commanding/Commands/ExpandSelectionCommandArgs.cs
@@ -0,0 +1,9 @@
+namespace Microsoft.VisualStudio.Text.Editor.Commanding.Commands
+{
+    public sealed class ExpandSelectionCommandArgs: EditorCommandArgs
+    {
+        public ExpandSelectionCommandArgs(ITextView textView, ITextBuffer subjectBuffer) : base(textView, subjectBuffer)
+        {
+        }
+    }
+}
diff --git a/src/Editor/Text/Def/TextUI/Commanding/Commands/ExtractInterfaceCommandArgs.cs b/src/Editor/Text/Def/TextUI/Commanding/Commands/ExtractInterfaceCommandArgs.cs
new file mode 100644
index 0000000..0c48f8f
--- /dev/null
+++ b/src/Editor/Text/Def/TextUI/Commanding/Commands/ExtractInterfaceCommandArgs.cs
@@ -0,0 +1,9 @@
+namespace Microsoft.VisualStudio.Text.Editor.Commanding.Commands
+{
+    public sealed class ExtractInterfaceCommandArgs : EditorCommandArgs
+    {
+        public ExtractInterfaceCommandArgs(ITextView textView, ITextBuffer subjectBuffer) : base(textView, subjectBuffer)
+        {
+        }
+    }
+}
diff --git a/src/Editor/Text/Def/TextUI/Commanding/Commands/ExtractMethodCommandArgs.cs b/src/Editor/Text/Def/TextUI/Commanding/Commands/ExtractMethodCommandArgs.cs
new file mode 100644
index 0000000..3e8694f
--- /dev/null
+++ b/src/Editor/Text/Def/TextUI/Commanding/Commands/ExtractMethodCommandArgs.cs
@@ -0,0 +1,9 @@
+namespace Microsoft.VisualStudio.Text.Editor.Commanding.Commands
+{
+    public sealed class ExtractMethodCommandArgs : EditorCommandArgs
+    {
+        public ExtractMethodCommandArgs(ITextView textView, ITextBuffer subjectBuffer) : base(textView, subjectBuffer)
+        {
+        }
+    }
+}
diff --git a/src/Editor/Text/Def/TextUI/Commanding/Commands/FindReferencesCommandArgs.cs b/src/Editor/Text/Def/TextUI/Commanding/Commands/FindReferencesCommandArgs.cs
new file mode 100644
index 0000000..32aadd1
--- /dev/null
+++ b/src/Editor/Text/Def/TextUI/Commanding/Commands/FindReferencesCommandArgs.cs
@@ -0,0 +1,9 @@
+namespace Microsoft.VisualStudio.Text.Editor.Commanding.Commands
+{
+    public sealed class FindReferencesCommandArgs : EditorCommandArgs
+    {
+        public FindReferencesCommandArgs(ITextView textView, ITextBuffer subjectBuffer) : base(textView, subjectBuffer)
+        {
+        }
+    }
+}
diff --git a/src/Editor/Text/Def/TextUI/Commanding/Commands/FormatDocumentCommandArgs.cs b/src/Editor/Text/Def/TextUI/Commanding/Commands/FormatDocumentCommandArgs.cs
new file mode 100644
index 0000000..7ba8eeb
--- /dev/null
+++ b/src/Editor/Text/Def/TextUI/Commanding/Commands/FormatDocumentCommandArgs.cs
@@ -0,0 +1,9 @@
+namespace Microsoft.VisualStudio.Text.Editor.Commanding.Commands
+{
+    public sealed class FormatDocumentCommandArgs : EditorCommandArgs
+    {
+        public FormatDocumentCommandArgs(ITextView textView, ITextBuffer subjectBuffer) : base(textView, subjectBuffer)
+        {
+        }
+    }
+}
diff --git a/src/Editor/Text/Def/TextUI/Commanding/Commands/FormatSelectionCommandArgs.cs b/src/Editor/Text/Def/TextUI/Commanding/Commands/FormatSelectionCommandArgs.cs
new file mode 100644
index 0000000..57f821e
--- /dev/null
+++ b/src/Editor/Text/Def/TextUI/Commanding/Commands/FormatSelectionCommandArgs.cs
@@ -0,0 +1,9 @@
+namespace Microsoft.VisualStudio.Text.Editor.Commanding.Commands
+{
+    public sealed class FormatSelectionCommandArgs : EditorCommandArgs
+    {
+        public FormatSelectionCommandArgs(ITextView textView, ITextBuffer subjectBuffer) : base(textView, subjectBuffer)
+        {
+        }
+    }
+}
diff --git a/src/Editor/Text/Def/TextUI/Commanding/Commands/GoToDefinitionCommandArgs.cs b/src/Editor/Text/Def/TextUI/Commanding/Commands/GoToDefinitionCommandArgs.cs
new file mode 100644
index 0000000..e5df4e9
--- /dev/null
+++ b/src/Editor/Text/Def/TextUI/Commanding/Commands/GoToDefinitionCommandArgs.cs
@@ -0,0 +1,9 @@
+namespace Microsoft.VisualStudio.Text.Editor.Commanding.Commands
+{
+    public sealed class GoToDefinitionCommandArgs : EditorCommandArgs
+    {
+        public GoToDefinitionCommandArgs(ITextView textView, ITextBuffer subjectBuffer) : base(textView, subjectBuffer)
+        {
+        }
+    }
+}
diff --git a/src/Editor/Text/Def/TextUI/Commanding/Commands/GoToNextMemberCommandArgs.cs b/src/Editor/Text/Def/TextUI/Commanding/Commands/GoToNextMemberCommandArgs.cs
new file mode 100644
index 0000000..8f74c77
--- /dev/null
+++ b/src/Editor/Text/Def/TextUI/Commanding/Commands/GoToNextMemberCommandArgs.cs
@@ -0,0 +1,9 @@
+namespace Microsoft.VisualStudio.Text.Editor.Commanding.Commands
+{
+    public sealed class GoToNextMemberCommandArgs : EditorCommandArgs
+    {
+        public GoToNextMemberCommandArgs(ITextView textView, ITextBuffer subjectBuffer) : base(textView, subjectBuffer)
+        {
+        }
+    }
+}
diff --git a/src/Editor/Text/Def/TextUI/Commanding/Commands/GoToPreviousMemberCommandArgs.cs b/src/Editor/Text/Def/TextUI/Commanding/Commands/GoToPreviousMemberCommandArgs.cs
new file mode 100644
index 0000000..af8d3c8
--- /dev/null
+++ b/src/Editor/Text/Def/TextUI/Commanding/Commands/GoToPreviousMemberCommandArgs.cs
@@ -0,0 +1,9 @@
+namespace Microsoft.VisualStudio.Text.Editor.Commanding.Commands
+{
+    public sealed class GoToPreviousMemberCommandArgs : EditorCommandArgs
+    {
+        public GoToPreviousMemberCommandArgs(ITextView textView, ITextBuffer subjectBuffer) : base(textView, subjectBuffer)
+        {
+        }
+    }
+}
diff --git a/src/Editor/Text/Def/TextUI/Commanding/Commands/InsertCommentCommandArgs.cs b/src/Editor/Text/Def/TextUI/Commanding/Commands/InsertCommentCommandArgs.cs
new file mode 100644
index 0000000..e7e3bd3
--- /dev/null
+++ b/src/Editor/Text/Def/TextUI/Commanding/Commands/InsertCommentCommandArgs.cs
@@ -0,0 +1,9 @@
+namespace Microsoft.VisualStudio.Text.Editor.Commanding.Commands
+{
+    public sealed class InsertCommentCommandArgs : EditorCommandArgs
+    {
+        public InsertCommentCommandArgs(ITextView textView, ITextBuffer subjectBuffer) : base(textView, subjectBuffer)
+        {
+        }
+    }
+}
diff --git a/src/Editor/Text/Def/TextUI/Commanding/Commands/InsertSnippetCommandArgs.cs b/src/Editor/Text/Def/TextUI/Commanding/Commands/InsertSnippetCommandArgs.cs
new file mode 100644
index 0000000..cba1f12
--- /dev/null
+++ b/src/Editor/Text/Def/TextUI/Commanding/Commands/InsertSnippetCommandArgs.cs
@@ -0,0 +1,9 @@
+namespace Microsoft.VisualStudio.Text.Editor.Commanding.Commands
+{
+    public sealed class InsertSnippetCommandArgs : EditorCommandArgs
+    {
+        public InsertSnippetCommandArgs(ITextView textView, ITextBuffer subjectBuffer) : base(textView, subjectBuffer)
+        {
+        }
+    }
+}
diff --git a/src/Editor/Text/Def/TextUI/Commanding/Commands/InvokeCompletionListCommandArgs.cs b/src/Editor/Text/Def/TextUI/Commanding/Commands/InvokeCompletionListCommandArgs.cs
new file mode 100644
index 0000000..8cd8bc3
--- /dev/null
+++ b/src/Editor/Text/Def/TextUI/Commanding/Commands/InvokeCompletionListCommandArgs.cs
@@ -0,0 +1,9 @@
+namespace Microsoft.VisualStudio.Text.Editor.Commanding.Commands
+{
+    public sealed class InvokeCompletionListCommandArgs : EditorCommandArgs
+    {
+        public InvokeCompletionListCommandArgs(ITextView textView, ITextBuffer subjectBuffer) : base(textView, subjectBuffer)
+        {
+        }
+    }
+}
diff --git a/src/Editor/Text/Def/TextUI/Commanding/Commands/InvokeQuickInfoCommandArgs.cs b/src/Editor/Text/Def/TextUI/Commanding/Commands/InvokeQuickInfoCommandArgs.cs
new file mode 100644
index 0000000..4e317b5
--- /dev/null
+++ b/src/Editor/Text/Def/TextUI/Commanding/Commands/InvokeQuickInfoCommandArgs.cs
@@ -0,0 +1,9 @@
+namespace Microsoft.VisualStudio.Text.Editor.Commanding.Commands
+{
+    public sealed class InvokeQuickInfoCommandArgs : EditorCommandArgs
+    {
+        public InvokeQuickInfoCommandArgs(ITextView textView, ITextBuffer subjectBuffer) : base(textView, subjectBuffer)
+        {
+        }
+    }
+}
diff --git a/src/Editor/Text/Def/TextUI/Commanding/Commands/InvokeSignatureHelpCommandArgs.cs b/src/Editor/Text/Def/TextUI/Commanding/Commands/InvokeSignatureHelpCommandArgs.cs
new file mode 100644
index 0000000..09a2b52
--- /dev/null
+++ b/src/Editor/Text/Def/TextUI/Commanding/Commands/InvokeSignatureHelpCommandArgs.cs
@@ -0,0 +1,9 @@
+namespace Microsoft.VisualStudio.Text.Editor.Commanding.Commands
+{
+    public sealed class InvokeSignatureHelpCommandArgs : EditorCommandArgs
+    {
+        public InvokeSignatureHelpCommandArgs(ITextView textView, ITextBuffer subjectBuffer) : base(textView, subjectBuffer)
+        {
+        }
+    }
+}
diff --git a/src/Editor/Text/Def/TextUI/Commanding/Commands/LeftKeyCommandArgs.cs b/src/Editor/Text/Def/TextUI/Commanding/Commands/LeftKeyCommandArgs.cs
new file mode 100644
index 0000000..5bdc8b7
--- /dev/null
+++ b/src/Editor/Text/Def/TextUI/Commanding/Commands/LeftKeyCommandArgs.cs
@@ -0,0 +1,9 @@
+namespace Microsoft.VisualStudio.Text.Editor.Commanding.Commands
+{
+    public sealed class LeftKeyCommandArgs : EditorCommandArgs
+    {
+        public LeftKeyCommandArgs(ITextView textView, ITextBuffer subjectBuffer) : base(textView, subjectBuffer)
+        {
+        }
+    }
+}
diff --git a/src/Editor/Text/Def/TextUI/Commanding/Commands/LineEndCommandArgs.cs b/src/Editor/Text/Def/TextUI/Commanding/Commands/LineEndCommandArgs.cs
new file mode 100644
index 0000000..320c096
--- /dev/null
+++ b/src/Editor/Text/Def/TextUI/Commanding/Commands/LineEndCommandArgs.cs
@@ -0,0 +1,9 @@
+namespace Microsoft.VisualStudio.Text.Editor.Commanding.Commands
+{
+    public sealed class LineEndCommandArgs : EditorCommandArgs
+    {
+        public LineEndCommandArgs(ITextView textView, ITextBuffer subjectBuffer) : base(textView, subjectBuffer)
+        {
+        }
+    }
+}
diff --git a/src/Editor/Text/Def/TextUI/Commanding/Commands/LineEndExtendCommandArgs.cs b/src/Editor/Text/Def/TextUI/Commanding/Commands/LineEndExtendCommandArgs.cs
new file mode 100644
index 0000000..ab66007
--- /dev/null
+++ b/src/Editor/Text/Def/TextUI/Commanding/Commands/LineEndExtendCommandArgs.cs
@@ -0,0 +1,9 @@
+namespace Microsoft.VisualStudio.Text.Editor.Commanding.Commands
+{
+    public sealed class LineEndExtendCommandArgs : EditorCommandArgs
+    {
+        public LineEndExtendCommandArgs(ITextView textView, ITextBuffer subjectBuffer) : base(textView, subjectBuffer)
+        {
+        }
+    }
+}
diff --git a/src/Editor/Text/Def/TextUI/Commanding/Commands/LineStartCommandArgs.cs b/src/Editor/Text/Def/TextUI/Commanding/Commands/LineStartCommandArgs.cs
new file mode 100644
index 0000000..decb21d
--- /dev/null
+++ b/src/Editor/Text/Def/TextUI/Commanding/Commands/LineStartCommandArgs.cs
@@ -0,0 +1,9 @@
+namespace Microsoft.VisualStudio.Text.Editor.Commanding.Commands
+{
+    public sealed class LineStartCommandArgs : EditorCommandArgs
+    {
+        public LineStartCommandArgs(ITextView textView, ITextBuffer subjectBuffer) : base(textView, subjectBuffer)
+        {
+        }
+    }
+}
diff --git a/src/Editor/Text/Def/TextUI/Commanding/Commands/LineStartExtendCommandArgs.cs b/src/Editor/Text/Def/TextUI/Commanding/Commands/LineStartExtendCommandArgs.cs
new file mode 100644
index 0000000..1282c85
--- /dev/null
+++ b/src/Editor/Text/Def/TextUI/Commanding/Commands/LineStartExtendCommandArgs.cs
@@ -0,0 +1,9 @@
+namespace Microsoft.VisualStudio.Text.Editor.Commanding.Commands
+{
+    public sealed class LineStartExtendCommandArgs : EditorCommandArgs
+    {
+        public LineStartExtendCommandArgs(ITextView textView, ITextBuffer subjectBuffer) : base(textView, subjectBuffer)
+        {
+        }
+    }
+}
diff --git a/src/Editor/Text/Def/TextUI/Commanding/Commands/MoveSelectedLinesDownCommandArgs.cs b/src/Editor/Text/Def/TextUI/Commanding/Commands/MoveSelectedLinesDownCommandArgs.cs
new file mode 100644
index 0000000..2c3d701
--- /dev/null
+++ b/src/Editor/Text/Def/TextUI/Commanding/Commands/MoveSelectedLinesDownCommandArgs.cs
@@ -0,0 +1,9 @@
+namespace Microsoft.VisualStudio.Text.Editor.Commanding.Commands
+{
+    public sealed class MoveSelectedLinesDownCommandArgs : EditorCommandArgs
+    {
+        public MoveSelectedLinesDownCommandArgs(ITextView textView, ITextBuffer subjectBuffer) : base(textView, subjectBuffer)
+        {
+        }
+    }
+}
diff --git a/src/Editor/Text/Def/TextUI/Commanding/Commands/MoveSelectedLinesUpCommandArgs.cs b/src/Editor/Text/Def/TextUI/Commanding/Commands/MoveSelectedLinesUpCommandArgs.cs
new file mode 100644
index 0000000..c92378a
--- /dev/null
+++ b/src/Editor/Text/Def/TextUI/Commanding/Commands/MoveSelectedLinesUpCommandArgs.cs
@@ -0,0 +1,9 @@
+namespace Microsoft.VisualStudio.Text.Editor.Commanding.Commands
+{
+    public sealed class MoveSelectedLinesUpCommandArgs : EditorCommandArgs
+    {
+        public MoveSelectedLinesUpCommandArgs(ITextView textView, ITextBuffer subjectBuffer) : base(textView, subjectBuffer)
+        {
+        }
+    }
+}
diff --git a/src/Editor/Text/Def/TextUI/Commanding/Commands/NavigateToNextHighlightedReferenceCommandArgs.cs b/src/Editor/Text/Def/TextUI/Commanding/Commands/NavigateToNextHighlightedReferenceCommandArgs.cs
new file mode 100644
index 0000000..d8353b9
--- /dev/null
+++ b/src/Editor/Text/Def/TextUI/Commanding/Commands/NavigateToNextHighlightedReferenceCommandArgs.cs
@@ -0,0 +1,9 @@
+namespace Microsoft.VisualStudio.Text.Editor.Commanding.Commands
+{
+    public sealed class NavigateToNextHighlightedReferenceCommandArgs : EditorCommandArgs
+    {
+        public NavigateToNextHighlightedReferenceCommandArgs(ITextView textView, ITextBuffer subjectBuffer) : base(textView, subjectBuffer)
+        {
+        }
+    }
+}
diff --git a/src/Editor/Text/Def/TextUI/Commanding/Commands/NavigateToPreviousHighlightedReferenceCommandArgs.cs b/src/Editor/Text/Def/TextUI/Commanding/Commands/NavigateToPreviousHighlightedReferenceCommandArgs.cs
new file mode 100644
index 0000000..86cbf14
--- /dev/null
+++ b/src/Editor/Text/Def/TextUI/Commanding/Commands/NavigateToPreviousHighlightedReferenceCommandArgs.cs
@@ -0,0 +1,9 @@
+namespace Microsoft.VisualStudio.Text.Editor.Commanding.Commands
+{
+    public sealed class NavigateToPreviousHighlightedReferenceCommandArgs : EditorCommandArgs
+    {
+        public NavigateToPreviousHighlightedReferenceCommandArgs(ITextView textView, ITextBuffer subjectBuffer) : base(textView, subjectBuffer)
+        {
+        }
+    }
+}
diff --git a/src/Editor/Text/Def/TextUI/Commanding/Commands/OpenLineAboveCommandArgs.cs b/src/Editor/Text/Def/TextUI/Commanding/Commands/OpenLineAboveCommandArgs.cs
new file mode 100644
index 0000000..5a2f736
--- /dev/null
+++ b/src/Editor/Text/Def/TextUI/Commanding/Commands/OpenLineAboveCommandArgs.cs
@@ -0,0 +1,9 @@
+namespace Microsoft.VisualStudio.Text.Editor.Commanding.Commands
+{
+    public sealed class OpenLineAboveCommandArgs : EditorCommandArgs
+    {
+        public OpenLineAboveCommandArgs(ITextView textView, ITextBuffer subjectBuffer) : base(textView, subjectBuffer)
+        {
+        }
+    }
+}
diff --git a/src/Editor/Text/Def/TextUI/Commanding/Commands/OpenLineBelowCommandArgs.cs b/src/Editor/Text/Def/TextUI/Commanding/Commands/OpenLineBelowCommandArgs.cs
new file mode 100644
index 0000000..808bbac
--- /dev/null
+++ b/src/Editor/Text/Def/TextUI/Commanding/Commands/OpenLineBelowCommandArgs.cs
@@ -0,0 +1,9 @@
+namespace Microsoft.VisualStudio.Text.Editor.Commanding.Commands
+{
+    public sealed class OpenLineBelowCommandArgs : EditorCommandArgs
+    {
+        public OpenLineBelowCommandArgs(ITextView textView, ITextBuffer subjectBuffer) : base(textView, subjectBuffer)
+        {
+        }
+    }
+}
diff --git a/src/Editor/Text/Def/TextUI/Commanding/Commands/PageDownKeyCommandArgs.cs b/src/Editor/Text/Def/TextUI/Commanding/Commands/PageDownKeyCommandArgs.cs
new file mode 100644
index 0000000..f54a5df
--- /dev/null
+++ b/src/Editor/Text/Def/TextUI/Commanding/Commands/PageDownKeyCommandArgs.cs
@@ -0,0 +1,9 @@
+namespace Microsoft.VisualStudio.Text.Editor.Commanding.Commands
+{
+    public sealed class PageDownKeyCommandArgs : EditorCommandArgs
+    {
+        public PageDownKeyCommandArgs(ITextView textView, ITextBuffer subjectBuffer) : base(textView, subjectBuffer)
+        {
+        }
+    }
+}
diff --git a/src/Editor/Text/Def/TextUI/Commanding/Commands/PageUpKeyCommandArgs.cs b/src/Editor/Text/Def/TextUI/Commanding/Commands/PageUpKeyCommandArgs.cs
new file mode 100644
index 0000000..0887797
--- /dev/null
+++ b/src/Editor/Text/Def/TextUI/Commanding/Commands/PageUpKeyCommandArgs.cs
@@ -0,0 +1,9 @@
+namespace Microsoft.VisualStudio.Text.Editor.Commanding.Commands
+{
+    public sealed class PageUpKeyCommandArgs : EditorCommandArgs
+    {
+        public PageUpKeyCommandArgs(ITextView textView, ITextBuffer subjectBuffer) : base(textView, subjectBuffer)
+        {
+        }
+    }
+}
diff --git a/src/Editor/Text/Def/TextUI/Commanding/Commands/PasteCommandArgs.cs b/src/Editor/Text/Def/TextUI/Commanding/Commands/PasteCommandArgs.cs
new file mode 100644
index 0000000..d307787
--- /dev/null
+++ b/src/Editor/Text/Def/TextUI/Commanding/Commands/PasteCommandArgs.cs
@@ -0,0 +1,9 @@
+namespace Microsoft.VisualStudio.Text.Editor.Commanding.Commands
+{
+    public sealed class PasteCommandArgs : EditorCommandArgs
+    {
+        public PasteCommandArgs(ITextView textView, ITextBuffer subjectBuffer) : base(textView, subjectBuffer)
+        {
+        }
+    }
+}
diff --git a/src/Editor/Text/Def/TextUI/Commanding/Commands/RedoCommandArgs.cs b/src/Editor/Text/Def/TextUI/Commanding/Commands/RedoCommandArgs.cs
new file mode 100644
index 0000000..5e606b8
--- /dev/null
+++ b/src/Editor/Text/Def/TextUI/Commanding/Commands/RedoCommandArgs.cs
@@ -0,0 +1,12 @@
+namespace Microsoft.VisualStudio.Text.Editor.Commanding.Commands
+{
+    public sealed class RedoCommandArgs : EditorCommandArgs
+    {
+        public readonly int Count;
+
+        public RedoCommandArgs(ITextView textView, ITextBuffer subjectBuffer, int count = 1) : base(textView, subjectBuffer)
+        {
+            this.Count = count;
+        }
+    }
+}
diff --git a/src/Editor/Text/Def/TextUI/Commanding/Commands/RemoveParametersCommandArgs.cs b/src/Editor/Text/Def/TextUI/Commanding/Commands/RemoveParametersCommandArgs.cs
new file mode 100644
index 0000000..d34e1ae
--- /dev/null
+++ b/src/Editor/Text/Def/TextUI/Commanding/Commands/RemoveParametersCommandArgs.cs
@@ -0,0 +1,9 @@
+namespace Microsoft.VisualStudio.Text.Editor.Commanding.Commands
+{
+    public sealed class RemoveParametersCommandArgs : EditorCommandArgs
+    {
+        public RemoveParametersCommandArgs(ITextView textView, ITextBuffer subjectBuffer) : base(textView, subjectBuffer)
+        {
+        }
+    }
+}
diff --git a/src/Editor/Text/Def/TextUI/Commanding/Commands/RenameCommandArgs.cs b/src/Editor/Text/Def/TextUI/Commanding/Commands/RenameCommandArgs.cs
new file mode 100644
index 0000000..6439a59
--- /dev/null
+++ b/src/Editor/Text/Def/TextUI/Commanding/Commands/RenameCommandArgs.cs
@@ -0,0 +1,9 @@
+namespace Microsoft.VisualStudio.Text.Editor.Commanding.Commands
+{
+    public sealed class RenameCommandArgs : EditorCommandArgs
+    {
+        public RenameCommandArgs(ITextView textView, ITextBuffer subjectBuffer) : base(textView, subjectBuffer)
+        {
+        }
+    }
+}
diff --git a/src/Editor/Text/Def/TextUI/Commanding/Commands/ReorderParametersCommandArgs.cs b/src/Editor/Text/Def/TextUI/Commanding/Commands/ReorderParametersCommandArgs.cs
new file mode 100644
index 0000000..b582981
--- /dev/null
+++ b/src/Editor/Text/Def/TextUI/Commanding/Commands/ReorderParametersCommandArgs.cs
@@ -0,0 +1,9 @@
+namespace Microsoft.VisualStudio.Text.Editor.Commanding.Commands
+{
+    public sealed class ReorderParametersCommandArgs : EditorCommandArgs
+    {
+        public ReorderParametersCommandArgs(ITextView textView, ITextBuffer subjectBuffer) : base(textView, subjectBuffer)
+        {
+        }
+    }
+}
diff --git a/src/Editor/Text/Def/TextUI/Commanding/Commands/ReturnKeyCommandArgs.cs b/src/Editor/Text/Def/TextUI/Commanding/Commands/ReturnKeyCommandArgs.cs
new file mode 100644
index 0000000..d2744ce
--- /dev/null
+++ b/src/Editor/Text/Def/TextUI/Commanding/Commands/ReturnKeyCommandArgs.cs
@@ -0,0 +1,9 @@
+namespace Microsoft.VisualStudio.Text.Editor.Commanding.Commands
+{
+    public sealed class ReturnKeyCommandArgs : EditorCommandArgs
+    {
+        public ReturnKeyCommandArgs(ITextView textView, ITextBuffer subjectBuffer) : base(textView, subjectBuffer)
+        {
+        }
+    }
+}
diff --git a/src/Editor/Text/Def/TextUI/Commanding/Commands/RightKeyCommandArgs.cs b/src/Editor/Text/Def/TextUI/Commanding/Commands/RightKeyCommandArgs.cs
new file mode 100644
index 0000000..45b2b8c
--- /dev/null
+++ b/src/Editor/Text/Def/TextUI/Commanding/Commands/RightKeyCommandArgs.cs
@@ -0,0 +1,9 @@
+namespace Microsoft.VisualStudio.Text.Editor.Commanding.Commands
+{
+    public sealed class RightKeyCommandArgs : EditorCommandArgs
+    {
+        public RightKeyCommandArgs(ITextView textView, ITextBuffer subjectBuffer) : base(textView, subjectBuffer)
+        {
+        }
+    }
+}
diff --git a/src/Editor/Text/Def/TextUI/Commanding/Commands/SaveCommandArgs.cs b/src/Editor/Text/Def/TextUI/Commanding/Commands/SaveCommandArgs.cs
new file mode 100644
index 0000000..1a45c29
--- /dev/null
+++ b/src/Editor/Text/Def/TextUI/Commanding/Commands/SaveCommandArgs.cs
@@ -0,0 +1,9 @@
+namespace Microsoft.VisualStudio.Text.Editor.Commanding.Commands
+{
+    public sealed class SaveCommandArgs : EditorCommandArgs
+    {
+        public SaveCommandArgs(ITextView textView, ITextBuffer subjectBuffer) : base(textView, subjectBuffer)
+        {
+        }
+    }
+}
diff --git a/src/Editor/Text/Def/TextUI/Commanding/Commands/SelectAllCommandArgs.cs b/src/Editor/Text/Def/TextUI/Commanding/Commands/SelectAllCommandArgs.cs
new file mode 100644
index 0000000..829b978
--- /dev/null
+++ b/src/Editor/Text/Def/TextUI/Commanding/Commands/SelectAllCommandArgs.cs
@@ -0,0 +1,9 @@
+namespace Microsoft.VisualStudio.Text.Editor.Commanding.Commands
+{
+    public sealed class SelectAllCommandArgs : EditorCommandArgs
+    {
+        public SelectAllCommandArgs(ITextView textView, ITextBuffer subjectBuffer) : base(textView, subjectBuffer)
+        {
+        }
+    }
+}
diff --git a/src/Editor/Text/Def/TextUI/Commanding/Commands/StartAutomaticOutliningCommandArgs.cs b/src/Editor/Text/Def/TextUI/Commanding/Commands/StartAutomaticOutliningCommandArgs.cs
new file mode 100644
index 0000000..ad097e5
--- /dev/null
+++ b/src/Editor/Text/Def/TextUI/Commanding/Commands/StartAutomaticOutliningCommandArgs.cs
@@ -0,0 +1,9 @@
+namespace Microsoft.VisualStudio.Text.Editor.Commanding.Commands
+{
+    public sealed class StartAutomaticOutliningCommandArgs : EditorCommandArgs
+    {
+        public StartAutomaticOutliningCommandArgs(ITextView textView, ITextBuffer subjectBuffer) : base(textView, subjectBuffer)
+        {
+        }
+    }
+}
diff --git a/src/Editor/Text/Def/TextUI/Commanding/Commands/SurroundWithCommandArgs.cs b/src/Editor/Text/Def/TextUI/Commanding/Commands/SurroundWithCommandArgs.cs
new file mode 100644
index 0000000..844451e
--- /dev/null
+++ b/src/Editor/Text/Def/TextUI/Commanding/Commands/SurroundWithCommandArgs.cs
@@ -0,0 +1,9 @@
+namespace Microsoft.VisualStudio.Text.Editor.Commanding.Commands
+{
+    public sealed class SurroundWithCommandArgs : EditorCommandArgs
+    {
+        public SurroundWithCommandArgs(ITextView textView, ITextBuffer subjectBuffer) : base(textView, subjectBuffer)
+        {
+        }
+    }
+}
diff --git a/src/Editor/Text/Def/TextUI/Commanding/Commands/SyncClassViewCommandArgs.cs b/src/Editor/Text/Def/TextUI/Commanding/Commands/SyncClassViewCommandArgs.cs
new file mode 100644
index 0000000..3ecd832
--- /dev/null
+++ b/src/Editor/Text/Def/TextUI/Commanding/Commands/SyncClassViewCommandArgs.cs
@@ -0,0 +1,9 @@
+namespace Microsoft.VisualStudio.Text.Editor.Commanding.Commands
+{
+    public sealed class SyncClassViewCommandArgs : EditorCommandArgs
+    {
+        public SyncClassViewCommandArgs(ITextView textView, ITextBuffer subjectBuffer) : base(textView, subjectBuffer)
+        {
+        }
+    }
+}
diff --git a/src/Editor/Text/Def/TextUI/Commanding/Commands/TabKeyCommandArgs.cs b/src/Editor/Text/Def/TextUI/Commanding/Commands/TabKeyCommandArgs.cs
new file mode 100644
index 0000000..24a9c25
--- /dev/null
+++ b/src/Editor/Text/Def/TextUI/Commanding/Commands/TabKeyCommandArgs.cs
@@ -0,0 +1,9 @@
+namespace Microsoft.VisualStudio.Text.Editor.Commanding.Commands
+{
+    public sealed class TabKeyCommandArgs : EditorCommandArgs
+    {
+        public TabKeyCommandArgs(ITextView textView, ITextBuffer subjectBuffer) : base(textView, subjectBuffer)
+        {
+        }
+    }
+}
diff --git a/src/Editor/Text/Def/TextUI/Commanding/Commands/ToggleCompletionModeCommandArgs.cs b/src/Editor/Text/Def/TextUI/Commanding/Commands/ToggleCompletionModeCommandArgs.cs
new file mode 100644
index 0000000..ddbfa6b
--- /dev/null
+++ b/src/Editor/Text/Def/TextUI/Commanding/Commands/ToggleCompletionModeCommandArgs.cs
@@ -0,0 +1,9 @@
+namespace Microsoft.VisualStudio.Text.Editor.Commanding.Commands
+{
+    public sealed class ToggleCompletionModeCommandArgs : EditorCommandArgs
+    {
+        public ToggleCompletionModeCommandArgs(ITextView textView, ITextBuffer subjectBuffer) : base(textView, subjectBuffer)
+        {
+        }
+    }
+}
diff --git a/src/Editor/Text/Def/TextUI/Commanding/Commands/TypeCharCommandArgs.cs b/src/Editor/Text/Def/TextUI/Commanding/Commands/TypeCharCommandArgs.cs
new file mode 100644
index 0000000..9ff72dc
--- /dev/null
+++ b/src/Editor/Text/Def/TextUI/Commanding/Commands/TypeCharCommandArgs.cs
@@ -0,0 +1,11 @@
+namespace Microsoft.VisualStudio.Text.Editor.Commanding.Commands
+{
+    public sealed class TypeCharCommandArgs : EditorCommandArgs
+    {
+        public char TypedChar { get; }
+        public TypeCharCommandArgs(ITextView textView, ITextBuffer subjectBuffer, char typedChar) : base(textView, subjectBuffer)
+        {
+            TypedChar = typedChar;
+        }
+    }
+}
diff --git a/src/Editor/Text/Def/TextUI/Commanding/Commands/UncommentSelectionCommandArgs.cs b/src/Editor/Text/Def/TextUI/Commanding/Commands/UncommentSelectionCommandArgs.cs
new file mode 100644
index 0000000..9c46e39
--- /dev/null
+++ b/src/Editor/Text/Def/TextUI/Commanding/Commands/UncommentSelectionCommandArgs.cs
@@ -0,0 +1,9 @@
+namespace Microsoft.VisualStudio.Text.Editor.Commanding.Commands
+{
+    public sealed class UncommentSelectionCommandArgs : EditorCommandArgs
+    {
+        public UncommentSelectionCommandArgs(ITextView textView, ITextBuffer subjectBuffer) : base(textView, subjectBuffer)
+        {
+        }
+    }
+}
diff --git a/src/Editor/Text/Def/TextUI/Commanding/Commands/UndoCommandArgs.cs b/src/Editor/Text/Def/TextUI/Commanding/Commands/UndoCommandArgs.cs
new file mode 100644
index 0000000..ce0df8b
--- /dev/null
+++ b/src/Editor/Text/Def/TextUI/Commanding/Commands/UndoCommandArgs.cs
@@ -0,0 +1,12 @@
+namespace Microsoft.VisualStudio.Text.Editor.Commanding.Commands
+{
+    public sealed class UndoCommandArgs : EditorCommandArgs
+    {
+        public readonly int Count;
+
+        public UndoCommandArgs(ITextView textView, ITextBuffer subjectBuffer, int count = 1) : base(textView, subjectBuffer)
+        {
+            this.Count = count;
+        }
+    }
+}
diff --git a/src/Editor/Text/Def/TextUI/Commanding/Commands/UpKeyCommandArgs.cs b/src/Editor/Text/Def/TextUI/Commanding/Commands/UpKeyCommandArgs.cs
new file mode 100644
index 0000000..29b6bb2
--- /dev/null
+++ b/src/Editor/Text/Def/TextUI/Commanding/Commands/UpKeyCommandArgs.cs
@@ -0,0 +1,9 @@
+namespace Microsoft.VisualStudio.Text.Editor.Commanding.Commands
+{
+    public sealed class UpKeyCommandArgs : EditorCommandArgs
+    {
+        public UpKeyCommandArgs(ITextView textView, ITextBuffer subjectBuffer) : base(textView, subjectBuffer)
+        {
+        }
+    }
+}
diff --git a/src/Editor/Text/Def/TextUI/Commanding/Commands/ViewCallHierarchyCommandArgs.cs b/src/Editor/Text/Def/TextUI/Commanding/Commands/ViewCallHierarchyCommandArgs.cs
new file mode 100644
index 0000000..3eea996
--- /dev/null
+++ b/src/Editor/Text/Def/TextUI/Commanding/Commands/ViewCallHierarchyCommandArgs.cs
@@ -0,0 +1,9 @@
+namespace Microsoft.VisualStudio.Text.Editor.Commanding.Commands
+{
+    public sealed class ViewCallHierarchyCommandArgs : EditorCommandArgs
+    {
+        public ViewCallHierarchyCommandArgs(ITextView textView, ITextBuffer subjectBuffer) : base(textView, subjectBuffer)
+        {
+        }
+    }
+}
diff --git a/src/Editor/Text/Def/TextUI/Commanding/Commands/WordDeleteToEndCommandArgs.cs b/src/Editor/Text/Def/TextUI/Commanding/Commands/WordDeleteToEndCommandArgs.cs
new file mode 100644
index 0000000..eeeddc5
--- /dev/null
+++ b/src/Editor/Text/Def/TextUI/Commanding/Commands/WordDeleteToEndCommandArgs.cs
@@ -0,0 +1,9 @@
+namespace Microsoft.VisualStudio.Text.Editor.Commanding.Commands
+{
+    public sealed class WordDeleteToEndCommandArgs : EditorCommandArgs
+    {
+        public WordDeleteToEndCommandArgs(ITextView textView, ITextBuffer subjectBuffer) : base(textView, subjectBuffer)
+        {
+        }
+    }
+}
diff --git a/src/Editor/Text/Def/TextUI/Commanding/Commands/WordDeleteToStartCommandArgs.cs b/src/Editor/Text/Def/TextUI/Commanding/Commands/WordDeleteToStartCommandArgs.cs
new file mode 100644
index 0000000..5d8c532
--- /dev/null
+++ b/src/Editor/Text/Def/TextUI/Commanding/Commands/WordDeleteToStartCommandArgs.cs
@@ -0,0 +1,9 @@
+namespace Microsoft.VisualStudio.Text.Editor.Commanding.Commands
+{
+    public sealed class WordDeleteToStartCommandArgs : EditorCommandArgs
+    {
+        public WordDeleteToStartCommandArgs(ITextView textView, ITextBuffer subjectBuffer) : base(textView, subjectBuffer)
+        {
+        }
+    }
+}
diff --git a/src/Editor/Text/Def/TextUI/Commanding/EditorCommandArgs.cs b/src/Editor/Text/Def/TextUI/Commanding/EditorCommandArgs.cs
new file mode 100644
index 0000000..deaf9cb
--- /dev/null
+++ b/src/Editor/Text/Def/TextUI/Commanding/EditorCommandArgs.cs
@@ -0,0 +1,33 @@
+using System;
+using Microsoft.VisualStudio.Commanding;
+
+namespace Microsoft.VisualStudio.Text.Editor.Commanding
+{
+    /// <summary>
+    /// A base class for all editor command arguments.
+    /// </summary>
+    public abstract class EditorCommandArgs : CommandArgs
+    {
+        /// <summary>
+        /// A subject buffer to execute a command on.
+        /// </summary>
+        public ITextBuffer SubjectBuffer { get; }
+
+        /// <summary>
+        /// An <see cref="ITextView"/> to execute a command on.
+        /// </summary>
+        public ITextView TextView { get; }
+
+        /// <summary>
+        /// Creates new instance of the <see cref="EditorCommandArgs"/> with given
+        /// <see cref="ITextView"/> and <see cref="ITextBuffer"/>.
+        /// </summary>
+        /// <param name="textView">A <see cref="ITextView"/> to execute a command on.</param>
+        /// <param name="subjectBuffer">A <see cref="ITextBuffer"/> to execute command on.</param>
+        public EditorCommandArgs(ITextView textView, ITextBuffer subjectBuffer)
+        {
+            this.TextView = textView ?? throw new ArgumentNullException(nameof(textView));
+            this.SubjectBuffer = subjectBuffer ?? throw new ArgumentNullException(nameof(subjectBuffer));
+        }
+    }
+}
diff --git a/src/Editor/Text/Def/TextUI/Commanding/IChainedCommandHandler.cs b/src/Editor/Text/Def/TextUI/Commanding/IChainedCommandHandler.cs
new file mode 100644
index 0000000..7dab7e3
--- /dev/null
+++ b/src/Editor/Text/Def/TextUI/Commanding/IChainedCommandHandler.cs
@@ -0,0 +1,39 @@
+using System;
+using Microsoft.VisualStudio.Utilities;
+
+namespace Microsoft.VisualStudio.Commanding
+{
+    /// <summary>
+    /// Represents a command handler that depends on behavior of following command handlers in the command execution chain
+    /// formed from same strongly-typed <see cref="ICommandHandler"/>s ordered according to their [Order] attributes.
+    /// </summary>
+    /// <remarks>
+    /// This is a MEF component part and should be exported as the non-generic <see cref="ICommandHandler"/> with required
+    /// [Name], [ContentType] attributes and optional [Order] and [TextViewRole] attributes.
+    /// </remarks>
+    /// <example>
+    /// [Export(typeof(ICommandHandler))]
+    /// [Name(nameof(MyCommandHandler))]
+    /// [ContentType("text")]
+    /// [Order(Before ="OtherCommandHandler")]   
+    /// [TextViewRole(PredefinedTextViewRoles.Editable)]
+    /// internal class MyCommandHandler : IChainedCommandHandler<MyCommandArgs>
+    /// </example>
+    public interface IChainedCommandHandler<T> : ICommandHandler, INamed where T : CommandArgs
+    {
+        /// <summary>
+        /// Called to determine the state of the command.
+        /// </summary>
+        /// <param name="args">The <see cref="CommandArgs"/> arguments for the command.</param>
+        /// <param name="nextCommandHandler">The next command handler in the command execution chain.</param>
+        /// <returns>A <see cref="CommandState"/> instance that contains information on the availability of the command.</returns>
+        CommandState GetCommandState(T args, Func<CommandState> nextCommandHandler);
+
+        /// <summary>
+        /// Called to execute the command.
+        /// </summary>
+        /// <param name="args">The <see cref="CommandArgs"/> arguments for the command.</param>
+        /// <param name="nextCommandHandler">The next command handler in the command execution chain.</param>
+        void ExecuteCommand(T args, Action nextCommandHandler, CommandExecutionContext executionContext);
+    }
+}
diff --git a/src/Editor/Text/Def/TextUI/Commanding/ICommandHandler.cs b/src/Editor/Text/Def/TextUI/Commanding/ICommandHandler.cs
new file mode 100644
index 0000000..c999be2
--- /dev/null
+++ b/src/Editor/Text/Def/TextUI/Commanding/ICommandHandler.cs
@@ -0,0 +1,56 @@
+using Microsoft.VisualStudio.Utilities;
+
+namespace Microsoft.VisualStudio.Commanding
+{
+    /// <summary>
+    /// This interface marks a class that implements at least one strongly-typed
+    /// <see cref="ICommandHandler{T}"/> or <see cref="IChainedCommandHandler{T}"/>.
+    /// </summary>
+    /// <remarks>
+    /// This is a MEF component part and should be exported as the non-generic <see cref="ICommandHandler"/> with required
+    /// [Name], [ContentType] attributes and optional [Order] and [TextViewRole] attributes.
+    /// </remarks>
+    /// <example>
+    /// [Export(typeof(ICommandHandler))]
+    /// [Name(nameof(MyCommandHandler))]
+    /// [ContentType("text")]
+    /// [Order(Before ="OtherCommandHandler")]   
+    /// [TextViewRole(PredefinedTextViewRoles.Editable)]
+    /// internal class MyCommandHandler : ICommandHandler<MyCommandArgs>
+    /// </example>
+    public interface ICommandHandler
+    {
+    }
+
+    /// <summary>
+    /// Represents a handler for a command associated with specific <see cref="CommandArgs"/>.
+    /// </summary>
+    /// <remarks>
+    /// This is a MEF component part and should be exported as the non-generic <see cref="ICommandHandler"/> with required
+    /// [Name], [ContentType] attributes and optional [Order] and [TextViewRole] attributes.
+    /// </remarks>
+    /// <example>
+    /// [Export(typeof(ICommandHandler))]
+    /// [Name(nameof(MyCommandHandler))]
+    /// [ContentType("text")]
+    /// [Order(Before ="OtherCommandHandler")]   
+    /// [TextViewRole(PredefinedTextViewRoles.Editable)]
+    /// internal class MyCommandHandler : ICommandHandler<MyCommandArgs>
+    /// </example>
+    public interface ICommandHandler<T> : ICommandHandler, INamed where T : CommandArgs
+    {
+        /// <summary>
+        /// Called to determine the state of the command.
+        /// </summary>
+        /// <param name="args">The <see cref="CommandArgs"/> arguments for the command.</param>
+        /// <returns>A <see cref="CommandState"/> instance that contains information on the availability of the command.</returns>
+        CommandState GetCommandState(T args);
+
+        /// <summary>
+        /// Called to execute the command.
+        /// </summary>
+        /// <param name="args">The <see cref="CommandArgs"/> arguments for the command.</param>
+        /// <returns>Returns <c>true</c> if the command was handled, <c>false</c> otherwise.</returns>
+        bool ExecuteCommand(T args, CommandExecutionContext executionContext);
+    }
+}
diff --git a/src/Editor/Text/Def/TextUI/Commanding/ICommandingTextBufferResolver.cs b/src/Editor/Text/Def/TextUI/Commanding/ICommandingTextBufferResolver.cs
new file mode 100644
index 0000000..4cf5a12
--- /dev/null
+++ b/src/Editor/Text/Def/TextUI/Commanding/ICommandingTextBufferResolver.cs
@@ -0,0 +1,20 @@
+using System.Collections.Generic;
+
+namespace Microsoft.VisualStudio.Text.Editor.Commanding
+{
+    /// <summary>
+    /// Given a text view and a command type, resolves a list of text buffers on which a command should be executed.
+    /// Default implementation of this service returns a list of buffers in the text view which can be mapped
+    /// to the caret position. Other implementations might take into acount text selection in addition to the caret position,
+    /// for example when executing Format Document command in a projection scenario.
+    /// </summary>
+    public interface ICommandingTextBufferResolver
+    {
+        /// <summary>
+        /// Given a command type, resolves a list of text buffers on which a command should be executed.
+        /// </summary>
+        /// <typeparam name="TArgs">Command type.</typeparam>
+        /// <returns>A list of text buffers on which a command should be executed.</returns>
+        IEnumerable<ITextBuffer> ResolveBuffersForCommand<TArgs>() where TArgs : EditorCommandArgs;
+    }
+}
diff --git a/src/Editor/Text/Def/TextUI/Commanding/ICommandingTextBufferResolverProvider.cs b/src/Editor/Text/Def/TextUI/Commanding/ICommandingTextBufferResolverProvider.cs
new file mode 100644
index 0000000..eef5914
--- /dev/null
+++ b/src/Editor/Text/Def/TextUI/Commanding/ICommandingTextBufferResolverProvider.cs
@@ -0,0 +1,23 @@
+namespace Microsoft.VisualStudio.Text.Editor.Commanding
+{
+    /// <summary>
+    /// Provides a <see cref="ICommandingTextBufferResolver"/> for a given
+    /// <see cref="ITextView"/> and content type.
+    /// </summary>
+    /// <remarks>This is a MEF component and should be exported as
+    /// 
+    /// Export(typeof(ICommandingTextBufferResolverProvider))]
+    /// [ContentType("MyContentType")]
+    /// internal class MyBufferResolverProvider : ICommandingTextBufferResolverProvider
+    /// </remarks>
+    public interface ICommandingTextBufferResolverProvider
+    {
+        /// <summary>
+        /// Creates a <see cref="ICommandingTextBufferResolver"/> for a given
+        /// <see cref="ITextView"/>.
+        /// </summary>
+        /// <param name="textView">A <see cref="ITextView"/> to create a text buffer resolver for.</param>
+        /// <returns>A new instance of <see cref="ICommandingTextBufferResolver"/>.</returns>
+        ICommandingTextBufferResolver CreateResolver(ITextView textView);
+    }
+}
diff --git a/src/Editor/Text/Def/TextUI/Commanding/IEditorCommandHandlerService.cs b/src/Editor/Text/Def/TextUI/Commanding/IEditorCommandHandlerService.cs
new file mode 100644
index 0000000..2516bd7
--- /dev/null
+++ b/src/Editor/Text/Def/TextUI/Commanding/IEditorCommandHandlerService.cs
@@ -0,0 +1,32 @@
+using Microsoft.VisualStudio.Commanding;
+using System;
+
+namespace Microsoft.VisualStudio.Text.Editor.Commanding
+{
+    /// <summary>
+    /// A service to execute commands on a text view.
+    /// </summary>
+    /// <remarks>
+    /// Instance of this service are created by <see cref="IEditorCommandHandlerServiceFactory"/>.
+    /// </remarks>
+    public interface IEditorCommandHandlerService
+    {
+        /// <summary>
+        /// Get the <see cref="CommandState"/> for command handlers of a given command.
+        /// </summary>
+        /// <param name="argsFactory">A factory of <see cref="EditorCommandArgs"/> that specifies what kind of command is being queried.</param>
+        /// <param name="nextCommandHandler">A next command handler to be called if no command handlers were
+        /// able to determine a command state.</param>
+        /// <typeparam name="T">Tehe </typeparam>
+        /// <returns>The command state of a given command.</returns>
+        CommandState GetCommandState<T>(Func<ITextView, ITextBuffer, T> argsFactory, Func<CommandState> nextCommandHandler) where T : EditorCommandArgs;
+
+        /// <summary>
+        /// Execute a given command on the <see cref="ITextView"/> associated with this <see cref="IEditorCommandHandlerService"/> instance.
+        /// </summary>
+        /// <param name="argsFactory">A factory of <see cref="EditorCommandArgs"/> that specifies what kind of command is being executed.
+        /// <paramref name="nextCommandHandler">>A next command handler to be called if no command handlers were
+        /// able to handle a command.</paramref>
+        void Execute<T>(Func<ITextView, ITextBuffer, T> argsFactory, Action nextCommandHandler) where T : EditorCommandArgs;
+    } 
+}
diff --git a/src/Editor/Text/Def/TextUI/Commanding/IEditorCommandHandlerServiceFactory.cs b/src/Editor/Text/Def/TextUI/Commanding/IEditorCommandHandlerServiceFactory.cs
new file mode 100644
index 0000000..226deb2
--- /dev/null
+++ b/src/Editor/Text/Def/TextUI/Commanding/IEditorCommandHandlerServiceFactory.cs
@@ -0,0 +1,27 @@
+namespace Microsoft.VisualStudio.Text.Editor.Commanding
+{
+    /// <summary>
+    /// A factory producing <see cref="IEditorCommandHandlerService"/> used to execute commands in a given text view.
+    /// </summary>
+    /// <remarks>
+    /// This is a MEF component and should be imported as
+    /// 
+    /// [Import]
+    /// private IEditorCommandHandlerServiceFactory factory;
+    /// </remarks>
+    public interface IEditorCommandHandlerServiceFactory
+    {
+        /// <summary>
+        /// Gets or creates a <see cref="IEditorCommandHandlerService"/> for a given <see cref="ITextView"/>.
+        /// </summary>
+        /// <param name="textView">A text view to get or create <see cref="IEditorCommandHandlerService"/> for.</param>
+        IEditorCommandHandlerService GetService(ITextView textView);
+
+        /// <summary>
+        /// Gets or creates a <see cref="IEditorCommandHandlerService"/> for a given <see cref="ITextView"/> and <see cref="ITextBuffer"/>.
+        /// </summary>
+        /// <param name="textView">A text view to get or create <see cref="IEditorCommandHandlerService"/> for.</param>
+        /// <param name="subjectBuffer">A text buffer to get or create <see cref="IEditorCommandHandlerService"/> for.</param>
+        IEditorCommandHandlerService GetService(ITextView textView, ITextBuffer subjectBuffer);
+    }
+}