diff --git a/minisqlquery-master/src/MiniSqlQuery.Core/Commands/CommandBase.cs b/minisqlquery-master/src/MiniSqlQuery.Core/Commands/CommandBase.cs
new file mode 100644
index 0000000..e56b9b2
--- /dev/null
+++ b/minisqlquery-master/src/MiniSqlQuery.Core/Commands/CommandBase.cs
@@ -0,0 +1,147 @@
+#region License
+
+// Copyright 2005-2019 Paul Kohler (https://github.com/paulkohler/minisqlquery). All rights reserved.
+// This source code is made available under the terms of the GNU Lesser General Public License v3.0
+// https://github.com/paulkohler/minisqlquery/blob/master/LICENSE
+
+#endregion
+
+using System.Drawing;
+using System.Windows.Forms;
+
+namespace MiniSqlQuery.Core.Commands
+{
+ /// <summary>
+ /// <para>A basic implementation of the <see cref="ICommand"/> interface.</para>
+ /// <para>Represents a "command", typically a user action such as saving a file or executing a query.</para>
+ /// <para>Inheritors must implement the abstract method <see cref="Execute"/>.</para>
+ /// </summary>
+ public abstract class CommandBase : ICommand
+ {
+ /// <summary>
+ /// The host window.
+ /// </summary>
+ private IHostWindow _hostWindow;
+
+ /// <summary>
+ /// The command name.
+ /// </summary>
+ private string _name;
+
+ /// <summary>
+ /// Initializes a new instance of the <see cref="CommandBase"/> class.
+ /// The default value for <see cref="Enabled"/> is true, and <see cref="ShortcutKeys"/> is Keys.None.
+ /// </summary>
+ /// <param name="name">
+ /// The name of the command.
+ /// </param>
+ protected CommandBase(string name)
+ {
+ _name = name;
+ ShortcutKeys = Keys.None;
+ }
+
+ /// <summary>
+ /// Gets a value indicating whether this <see cref = "ICommand" /> is enabled.
+ /// </summary>
+ /// <value><c>true</c> if enabled; otherwise, <c>false</c> (the default is true).</value>
+ public virtual bool Enabled
+ {
+ get { return true; }
+ }
+
+ public object Host { get; set; }
+
+ /// <summary>
+ /// The name of the command, used in menus and buttons.
+ /// </summary>
+ /// <value>The name of the command.</value>
+ public virtual string Name
+ {
+ get { return _name; }
+ protected set
+ {
+ if (_name == value)
+ {
+ return;
+ }
+
+ _name = value;
+
+ // if the "host" of this command is a toolstring item, update its Text property.
+ var item = Host as ToolStripItem;
+ if (item != null)
+ {
+ item.Text = _name;
+ }
+ }
+ }
+
+ /// <summary>
+ /// A reference to the application services to allow access to the other components.
+ /// </summary>
+ /// <value>A reference to the <see cref = "IApplicationServices" /> instance.</value>
+ public IApplicationServices Services { get; set; }
+
+ /// <summary>
+ /// Gets a reference to the application settings.
+ /// </summary>
+ /// <value>The application settings.</value>
+ public IApplicationSettings Settings { get; set; }
+
+ /// <summary>
+ /// Gets the menu shortcut keys for this command (e.g. Keys.F5).
+ /// </summary>
+ /// <value>The shortcut keys for this command (the default is Keys.None).</value>
+ public virtual Keys ShortcutKeys { get; protected set; }
+
+ /// <summary>
+ /// Gets the shortcut key text to be displayed as help.
+ /// </summary>
+ /// <value>The shortcut keys text.</value>
+ public string ShortcutKeysText { get; protected set; }
+
+ /// <summary>
+ /// Gets the "small image" associated with this control (for use on buttons or menu items).
+ /// Use null (or Nothing in Visual Basic) if there is no image.
+ /// </summary>
+ /// <value>The small image representing this command (the default is null).</value>
+ public virtual Image SmallImage { get; protected set; }
+
+ /// <summary>
+ /// Attempts to convert the current host windows active form to <see cref = "IEditor" />.
+ /// </summary>
+ /// <value>A reference to the active base editor window, otherwise null.</value>
+ protected IEditor ActiveFormAsEditor
+ {
+ get { return Services.HostWindow.ActiveChildForm as IEditor; }
+ }
+
+ /// <summary>
+ /// Attempts to convert the current host windows active form to <see cref = "IQueryEditor" />.
+ /// </summary>
+ /// <value>A reference to the active query editor window, otherwise null.</value>
+ protected IQueryEditor ActiveFormAsSqlQueryEditor
+ {
+ get { return Services.HostWindow.ActiveChildForm as IQueryEditor; }
+ }
+
+ /// <summary>
+ /// Gets a reference to the host window.
+ /// </summary>
+ /// <value>The host window.</value>
+ protected IHostWindow HostWindow
+ {
+ get { return _hostWindow ?? (_hostWindow = Services.HostWindow); }
+ }
+
+ /// <summary>
+ /// Executes the command based on the current settings (abstract).
+ /// </summary>
+ /// <remarks>
+ /// If a commands <see cref="Enabled"/> value is false, a call to <see cref="Execute"/> should have no effect
+ /// (and not throw an exception).
+ /// </remarks>
+ public abstract void Execute();
+ }
+}
\ No newline at end of file