WinForms - Add custom Designer

Add some custom designer attributes
Converted the logo.png to a 16x16 bmp as a short term placeholder (someone is welcome to contribute something better)
Hide all the handlers from the designer

Author: amaitland

CefSharp.WinForms/CefSharp.WinForms.csproj

@@ -54,6 +54,7 @@
   <ItemGroup>
     <Reference Include="System" />
     <Reference Include="System.Core" />
+    <Reference Include="System.Design" />
     <Reference Include="System.Drawing" />
     <Reference Include="System.ServiceModel" />
     <Reference Include="System.Windows.Forms" />
@@ -64,6 +65,7 @@
     <Reference Include="System.Xml" />
   </ItemGroup>
   <ItemGroup>
+    <Compile Include="ChromiumWebBrowserDesigner.cs" />
     <Compile Include="Internals\DefaultFocusHandler.cs" />
     <Compile Include="Internals\ControlExtensions.cs" />
     <Compile Include="Internals\ParentFormMessageInterceptor.cs" />
@@ -84,6 +86,12 @@
       <Name>CefSharp</Name>
     </ProjectReference>
   </ItemGroup>
+  <ItemGroup>
+    <EmbeddedResource Include="ChromiumWebBrowser.bmp" />
+  </ItemGroup>
+  <ItemGroup>
+    <EmbeddedResource Include="CefSharpLogo.png" />
+  </ItemGroup>
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
   <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
        Other similar extension points exist, see Microsoft.Common.targets.

CefSharp.WinForms/ChromiumWebBrowser.bmp

@@ -8,6 +8,7 @@
 using System.ComponentModel;
 using System.Runtime.CompilerServices;
 using System.Windows.Forms;
+using System.Drawing;
 
 namespace CefSharp.WinForms
 {
@@ -17,6 +18,9 @@ namespace CefSharp.WinForms
     /// <seealso cref="System.Windows.Forms.Control" />
     /// <seealso cref="CefSharp.Internals.IWebBrowserInternal" />
     /// <seealso cref="CefSharp.WinForms.IWinFormsWebBrowser" />
+    [Docking(DockingBehavior.AutoDock),DefaultEvent("LoadingStateChanged"), ToolboxBitmap(typeof(ChromiumWebBrowser)),
+    Description("CefSharp ChromiumWebBrowser - Chromium Embedded Framework .Net wrapper. https://github.com/cefsharp/CefSharp"),
+    Designer(typeof(ChromiumWebBrowserDesigner))]
     public class ChromiumWebBrowser : Control, IWebBrowserInternal, IWinFormsWebBrowser
     {
         /// <summary>
@@ -63,11 +67,13 @@ public class ChromiumWebBrowser : Control, IWebBrowserInternal, IWinFormsWebBrow
         /// Gets or sets the browser settings.
         /// </summary>
         /// <value>The browser settings.</value>
+        [Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
         public BrowserSettings BrowserSettings { get; set; }
         /// <summary>
         /// Gets or sets the request context.
         /// </summary>
         /// <value>The request context.</value>
+        [Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
         public IRequestContext RequestContext
         {
             get { return requestContext; }
@@ -113,56 +119,67 @@ public IRequestContext RequestContext
         /// Implement <see cref="IDialogHandler" /> and assign to handle dialog events.
         /// </summary>
         /// <value>The dialog handler.</value>
+        [Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
         public IDialogHandler DialogHandler { get; set; }
         /// <summary>
         /// Implement <see cref="IJsDialogHandler" /> and assign to handle events related to JavaScript Dialogs.
         /// </summary>
         /// <value>The js dialog handler.</value>
+        [Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
         public IJsDialogHandler JsDialogHandler { get; set; }
         /// <summary>
         /// Implement <see cref="IKeyboardHandler" /> and assign to handle events related to key press.
         /// </summary>
         /// <value>The keyboard handler.</value>
+        [Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
         public IKeyboardHandler KeyboardHandler { get; set; }
         /// <summary>
         /// Implement <see cref="IRequestHandler" /> and assign to handle events related to browser requests.
         /// </summary>
         /// <value>The request handler.</value>
+        [Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
         public IRequestHandler RequestHandler { get; set; }
         /// <summary>
         /// Implement <see cref="IDownloadHandler" /> and assign to handle events related to downloading files.
         /// </summary>
         /// <value>The download handler.</value>
+        [Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
         public IDownloadHandler DownloadHandler { get; set; }
         /// <summary>
         /// Implement <see cref="ILoadHandler" /> and assign to handle events related to browser load status.
         /// </summary>
         /// <value>The load handler.</value>
+        [Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
         public ILoadHandler LoadHandler { get; set; }
         /// <summary>
         /// Implement <see cref="ILifeSpanHandler" /> and assign to handle events related to popups.
         /// </summary>
         /// <value>The life span handler.</value>
+        [Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
         public ILifeSpanHandler LifeSpanHandler { get; set; }
         /// <summary>
         /// Implement <see cref="IDisplayHandler" /> and assign to handle events related to browser display state.
         /// </summary>
         /// <value>The display handler.</value>
+        [Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
         public IDisplayHandler DisplayHandler { get; set; }
         /// <summary>
         /// Implement <see cref="IContextMenuHandler" /> and assign to handle events related to the browser context menu
         /// </summary>
         /// <value>The menu handler.</value>
+        [Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
         public IContextMenuHandler MenuHandler { get; set; }
         /// <summary>
         /// Implement <see cref="IRenderProcessMessageHandler" /> and assign to handle messages from the render process.
         /// </summary>
         /// <value>The render process message handler.</value>
+        [Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
         public IRenderProcessMessageHandler RenderProcessMessageHandler { get; set; }
         /// <summary>
         /// Implement <see cref="IFindHandler" /> to handle events related to find results.
         /// </summary>
         /// <value>The find handler.</value>
+        [Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
         public IFindHandler FindHandler { get; set; }
 
         /// <summary>
@@ -174,21 +191,25 @@ public IRequestContext RequestContext
         /// needing to override the logic in OnGotFocus. The implementation in
         /// DefaultFocusHandler relies on very detailed behavior of how WinForms and
         /// Windows interact during window activation.</remarks>
+        [Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
         public IFocusHandler FocusHandler { get; set; }
         /// <summary>
         /// Implement <see cref="IDragHandler" /> and assign to handle events related to dragging.
         /// </summary>
         /// <value>The drag handler.</value>
+        [Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
         public IDragHandler DragHandler { get; set; }
         /// <summary>
         /// Implement <see cref="IResourceHandlerFactory" /> and control the loading of resources
         /// </summary>
         /// <value>The resource handler factory.</value>
+        [Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
         public IResourceHandlerFactory ResourceHandlerFactory { get; set; }
         /// <summary>
         /// Implement <see cref="IGeolocationHandler" /> and assign to handle requests for permission to use geolocation.
         /// </summary>
         /// <value>The geolocation handler.</value>
+        [Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
         public IGeolocationHandler GeolocationHandler { get; set; }
 
         /// <summary>

CefSharp.WinForms/ChromiumWebBrowser.cs

@@ -0,0 +1,59 @@
+// Copyright © 2010-2017 The CefSharp Authors. All rights reserved.
+//
+// Use of this source code is governed by a BSD-style license that can be found in the LICENSE file.
+
+using System.Collections;
+using System.ComponentModel;
+using System.Drawing;
+using System.Reflection;
+using System.Resources;
+using System.Windows.Forms.Design;
+
+namespace CefSharp.WinForms
+{
+	public class ChromiumWebBrowserDesigner : ControlDesigner
+	{
+		protected override void OnPaintAdornments(System.Windows.Forms.PaintEventArgs pe)
+		{
+			//NOTE: Removed until a better image can be found, add image as Embedded Resource and update name below
+			//var assembly = Assembly.GetAssembly(typeof(ChromiumWebBrowserDesigner));
+
+			//using (var logo = assembly.GetManifestResourceStream("CefSharp.WinForms.CefSharpLogo.png"))
+			//using (var img = Image.FromStream(logo))
+			//{
+			//	pe.Graphics.DrawImage(img, 0, 0);
+			//}
+
+			using(var font = new Font("Arial", 16))
+			using (var stringFormat = new StringFormat
+			{
+				// Create a StringFormat object with the each line of text, and the block
+				// of text centered on the page.
+				Alignment = StringAlignment.Center,
+				LineAlignment = StringAlignment.Center 
+			})
+			{		
+				pe.Graphics.DrawString("ChromiumWebBrowser", font, Brushes.Black, pe.ClipRectangle, stringFormat);
+			}
+
+			base.OnPaintAdornments(pe);
+		}
+
+		protected override void PreFilterProperties(IDictionary properties)
+		{
+			//Remove some of the default properties from the designer
+			//they don't have much meaning for the browser
+			//Probably more that can be removed/tweaked
+			properties.Remove("BackgroundImage");
+			properties.Remove("BackgroundImageLayout");
+			properties.Remove("Text");
+
+			properties.Remove("Font");
+			properties.Remove("ForeColor");
+			properties.Remove("BackColor");
+			properties.Remove("RightToLeft");
+
+			base.PreFilterProperties(properties);
+		}
+	}
+}