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// Copyright © 2014 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;
using System.Diagnostics;
using System.IO;
using System.Text;
using CefSharp.Example.Properties;
using CefSharp.Example.Proxy;
using CefSharp.SchemeHandler;
namespace CefSharp.Example
{
public static class CefExample
{
//TODO: Revert after https://bitbucket.org/chromiumembedded/cef/issues/2685/networkservice-custom-scheme-unable-to
//has been fixed.
public const string BaseUrl = "https://cefsharp.example";
public const string DefaultUrl = BaseUrl + "/home.html";
public const string BindingTestUrl = BaseUrl + "/BindingTest.html";
public const string BindingTestSingleUrl = BaseUrl + "/BindingTestSingle.html";
public const string BindingTestsAsyncTaskUrl = BaseUrl + "/BindingTestsAsyncTask.html";
public const string LegacyBindingTestUrl = BaseUrl + "/LegacyBindingTest.html";
public const string PostMessageTestUrl = BaseUrl + "/PostMessageTest.html";
public const string PluginsTestUrl = BaseUrl + "/plugins.html";
public const string PopupTestUrl = BaseUrl + "/PopupTest.html";
public const string TooltipTestUrl = BaseUrl + "/TooltipTest.html";
public const string BasicSchemeTestUrl = BaseUrl + "/SchemeTest.html";
public const string ResponseFilterTestUrl = BaseUrl + "/ResponseFilterTest.html";
public const string DraggableRegionTestUrl = BaseUrl + "/DraggableRegionTest.html";
public const string DragDropCursorsTestUrl = BaseUrl + "/DragDropCursorsTest.html";
public const string CssAnimationTestUrl = BaseUrl + "/CssAnimationTest.html";
public const string CdmSupportTestUrl = BaseUrl + "/CdmSupportTest.html";
public const string TestResourceUrl = "http://test/resource/load";
public const string RenderProcessCrashedUrl = "http://processcrashed";
public const string TestUnicodeResourceUrl = "http://test/resource/loadUnicode";
public const string PopupParentUrl = "http://www.w3schools.com/jsref/tryit.asp?filename=tryjsref_win_close";
// Use when debugging the actual SubProcess, to make breakpoints etc. inside that project work.
private static readonly bool DebuggingSubProcess = Debugger.IsAttached;
private static string PluginInformation = "";
public static void Init(CefSettingsBase settings, IBrowserProcessHandler browserProcessHandler)
{
// Set Google API keys, used for Geolocation requests sans GPS. See http://www.chromium.org/developers/how-tos/api-keys
// Environment.SetEnvironmentVariable("GOOGLE_API_KEY", "");
// Environment.SetEnvironmentVariable("GOOGLE_DEFAULT_CLIENT_ID", "");
// Environment.SetEnvironmentVariable("GOOGLE_DEFAULT_CLIENT_SECRET", "");
// Widevine CDM registration - pass in directory where Widevine CDM binaries and manifest.json are located.
// For more information on support for DRM content with Widevine see: https://github.com/cefsharp/CefSharp/issues/1934
//Cef.RegisterWidevineCdm(@".\WidevineCdm");
//Chromium Command Line args
//http://peter.sh/experiments/chromium-command-line-switches/
//NOTE: Not all relevant in relation to `CefSharp`, use for reference purposes only.
//CEF specific command line args
//https://bitbucket.org/chromiumembedded/cef/src/master/libcef/common/cef_switches.cc?fileviewer=file-view-default
//IMPORTANT: For enabled/disabled command line arguments like disable-gpu specifying a value of "0" like
//settings.CefCommandLineArgs.Add("disable-gpu", "0"); will have no effect as the second argument is ignored.
settings.RemoteDebuggingPort = 8088;
//The location where cache data will be stored on disk. If empty an in-memory cache will be used for some features and a temporary disk cache for others.
//HTML5 databases such as localStorage will only persist across sessions if a cache path is specified.
settings.RootCachePath = Path.GetFullPath("cache");
//If non-null then CachePath must be equal to or a child of RootCachePath
//We're using a sub folder.
//
settings.CachePath = Path.GetFullPath("cache\\global");
//settings.UserAgent = "CefSharp Browser" + Cef.CefSharpVersion; // Example User Agent
//settings.CefCommandLineArgs.Add("renderer-process-limit", "1");
//settings.CefCommandLineArgs.Add("renderer-startup-dialog");
//settings.CefCommandLineArgs.Add("enable-media-stream"); //Enable WebRTC
//settings.CefCommandLineArgs.Add("no-proxy-server"); //Don't use a proxy server, always make direct connections. Overrides any other proxy server flags that are passed.
//settings.CefCommandLineArgs.Add("debug-plugin-loading"); //Dumps extra logging about plugin loading to the log file.
//settings.CefCommandLineArgs.Add("disable-plugins-discovery"); //Disable discovering third-party plugins. Effectively loading only ones shipped with the browser plus third-party ones as specified by --extra-plugin-dir and --load-plugin switches
//settings.CefCommandLineArgs.Add("enable-system-flash"); //Automatically discovered and load a system-wide installation of Pepper Flash.
//settings.CefCommandLineArgs.Add("allow-running-insecure-content"); //By default, an https page cannot run JavaScript, CSS or plugins from http URLs. This provides an override to get the old insecure behavior. Only available in 47 and above.
//https://peter.sh/experiments/chromium-command-line-switches/#disable-site-isolation-trials
//settings.CefCommandLineArgs.Add("disable-site-isolation-trials");
//NOTE: Running the Network Service in Process is not something CEF officially supports
//It may or may not work for newer versions.
//settings.CefCommandLineArgs.Add("enable-features", "CastMediaRouteProvider,NetworkServiceInProcess");
//settings.CefCommandLineArgs.Add("enable-logging"); //Enable Logging for the Renderer process (will open with a cmd prompt and output debug messages - use in conjunction with setting LogSeverity = LogSeverity.Verbose;)
//settings.LogSeverity = LogSeverity.Verbose; // Needed for enable-logging to output messages
//settings.CefCommandLineArgs.Add("disable-extensions"); //Extension support can be disabled
//settings.CefCommandLineArgs.Add("disable-pdf-extension"); //The PDF extension specifically can be disabled
//Load the pepper flash player that comes with Google Chrome - may be possible to load these values from the registry and query the dll for it's version info (Step 2 not strictly required it seems)
//settings.CefCommandLineArgs.Add("ppapi-flash-path", @"C:\Program Files (x86)\Google\Chrome\Application\47.0.2526.106\PepperFlash\pepflashplayer.dll"); //Load a specific pepper flash version (Step 1 of 2)
//settings.CefCommandLineArgs.Add("ppapi-flash-version", "20.0.0.228"); //Load a specific pepper flash version (Step 2 of 2)
//Audo play example
//settings.CefCommandLineArgs["autoplay-policy"] = "no-user-gesture-required";
//NOTE: For OSR best performance you should run with GPU disabled:
// `--disable-gpu --disable-gpu-compositing --enable-begin-frame-scheduling`
// (you'll loose WebGL support but gain increased FPS and reduced CPU usage).
// http://magpcss.org/ceforum/viewtopic.php?f=6&t=13271#p27075
//https://bitbucket.org/chromiumembedded/cef/commits/e3c1d8632eb43c1c2793d71639f3f5695696a5e8
//NOTE: The following function will set all three params
//settings.SetOffScreenRenderingBestPerformanceArgs();
//settings.CefCommandLineArgs.Add("disable-gpu");
//settings.CefCommandLineArgs.Add("disable-gpu-compositing");
//settings.CefCommandLineArgs.Add("enable-begin-frame-scheduling");
//settings.CefCommandLineArgs.Add("disable-gpu-vsync"); //Disable Vsync
// The following options control accessibility state for all frames.
// These options only take effect if accessibility state is not set by IBrowserHost.SetAccessibilityState call.
// --force-renderer-accessibility enables browser accessibility.
// --disable-renderer-accessibility completely disables browser accessibility.
//settings.CefCommandLineArgs.Add("force-renderer-accessibility");
//settings.CefCommandLineArgs.Add("disable-renderer-accessibility");
//Enables Uncaught exception handler
settings.UncaughtExceptionStackSize = 10;
//Disable WebAssembly
//settings.JavascriptFlags = "--noexpose_wasm";
// Off Screen rendering (WPF/Offscreen)
if (settings.WindowlessRenderingEnabled)
{
//Disable Direct Composition to test https://github.com/cefsharp/CefSharp/issues/1634
//settings.CefCommandLineArgs.Add("disable-direct-composition");
// DevTools doesn't seem to be working when this is enabled
// http://magpcss.org/ceforum/viewtopic.php?f=6&t=14095
//settings.CefCommandLineArgs.Add("enable-begin-frame-scheduling");
}
var proxy = ProxyConfig.GetProxyInformation();
switch (proxy.AccessType)
{
case InternetOpenType.Direct:
{
//Don't use a proxy server, always make direct connections.
settings.CefCommandLineArgs.Add("no-proxy-server");
break;
}
case InternetOpenType.Proxy:
{
settings.CefCommandLineArgs.Add("proxy-server", proxy.ProxyAddress);
break;
}
case InternetOpenType.PreConfig:
{
settings.CefCommandLineArgs.Add("proxy-auto-detect");
break;
}
}
//settings.LogSeverity = LogSeverity.Verbose;
if (DebuggingSubProcess)
{
var architecture = Environment.Is64BitProcess ? "x64" : "x86";
settings.BrowserSubprocessPath = Path.GetFullPath("..\\..\\..\\..\\CefSharp.BrowserSubprocess\\bin\\" + architecture + "\\Debug\\CefSharp.BrowserSubprocess.exe");
}
settings.RegisterScheme(new CefCustomScheme
{
SchemeName = CefSharpSchemeHandlerFactory.SchemeName,
SchemeHandlerFactory = new CefSharpSchemeHandlerFactory(),
IsSecure = true, //treated with the same security rules as those applied to "https" URLs
});
settings.RegisterScheme(new CefCustomScheme
{
SchemeName = "https",
SchemeHandlerFactory = new CefSharpSchemeHandlerFactory(),
DomainName = "cefsharp.example"
});
settings.RegisterScheme(new CefCustomScheme
{
SchemeName = CefSharpSchemeHandlerFactory.SchemeNameTest,
SchemeHandlerFactory = new CefSharpSchemeHandlerFactory(),
IsSecure = true //treated with the same security rules as those applied to "https" URLs
});
//You can use the http/https schemes - best to register for a specific domain
settings.RegisterScheme(new CefCustomScheme
{
SchemeName = "https",
SchemeHandlerFactory = new CefSharpSchemeHandlerFactory(),
DomainName = "cefsharp.com",
IsSecure = true //treated with the same security rules as those applied to "https" URLs
});
settings.RegisterScheme(new CefCustomScheme
{
SchemeName = "localfolder",
SchemeHandlerFactory = new FolderSchemeHandlerFactory(rootFolder: @"..\..\..\..\CefSharp.Example\Resources",
schemeName: "localfolder", //Optional param no schemename checking if null
hostName: "cefsharp", //Optional param no hostname checking if null
defaultPage: "home.html") //Optional param will default to index.html
});
settings.RegisterExtension(new V8Extension("cefsharp/example", Resources.extension));
//This must be set before Cef.Initialized is called
CefSharpSettings.FocusedNodeChangedEnabled = true;
//Async Javascript Binding - methods are queued on TaskScheduler.Default.
//Set this to true to when you have methods that return Task<T>
//CefSharpSettings.ConcurrentTaskExecution = true;
//Legacy Binding Behaviour - Same as Javascript Binding in version 57 and below
//See issue https://github.com/cefsharp/CefSharp/issues/1203 for details
//CefSharpSettings.LegacyJavascriptBindingEnabled = true;
//Exit the subprocess if the parent process happens to close
//This is optional at the moment
//https://github.com/cefsharp/CefSharp/pull/2375/
CefSharpSettings.SubprocessExitIfParentProcessClosed = true;
//NOTE: Set this before any calls to Cef.Initialize to specify a proxy with username and password
//One set this cannot be changed at runtime. If you need to change the proxy at runtime (dynamically) then
//see https://github.com/cefsharp/CefSharp/wiki/General-Usage#proxy-resolution
//CefSharpSettings.Proxy = new ProxyOptions(ip: "127.0.0.1", port: "8080", username: "cefsharp", password: "123");
if (!Cef.Initialize(settings, performDependencyCheck: !DebuggingSubProcess, browserProcessHandler: browserProcessHandler))
{
throw new Exception("Unable to Initialize Cef");
}
Cef.AddCrossOriginWhitelistEntry(BaseUrl, "https", "cefsharp.com", false);
}
public static async void RegisterTestResources(IWebBrowser browser)
{
if (browser.ResourceRequestHandlerFactory == null)
{
browser.ResourceRequestHandlerFactory = new ResourceRequestHandlerFactory();
}
var handler = browser.ResourceRequestHandlerFactory as ResourceRequestHandlerFactory;
if (handler != null)
{
const string renderProcessCrashedBody = "<html><body><h1>Render Process Crashed</h1><p>Your seeing this message as the render process has crashed</p></body></html>";
handler.RegisterHandler(RenderProcessCrashedUrl, ResourceHandler.GetByteArray(renderProcessCrashedBody, Encoding.UTF8));
const string responseBody = "<html><body><h1>Success</h1><p>This document is loaded from a System.IO.Stream</p></body></html>";
handler.RegisterHandler(TestResourceUrl, ResourceHandler.GetByteArray(responseBody, Encoding.UTF8));
const string unicodeResponseBody = "<html><body>整体满意度</body></html>";
handler.RegisterHandler(TestUnicodeResourceUrl, ResourceHandler.GetByteArray(unicodeResponseBody, Encoding.UTF8));
if (string.IsNullOrEmpty(PluginInformation))
{
var pluginBody = new StringBuilder();
pluginBody.Append("<html><body><h1>Plugins</h1><table>");
pluginBody.Append("<tr>");
pluginBody.Append("<th>Name</th>");
pluginBody.Append("<th>Description</th>");
pluginBody.Append("<th>Version</th>");
pluginBody.Append("<th>Path</th>");
pluginBody.Append("</tr>");
var plugins = await Cef.GetPlugins();
if (plugins.Count == 0)
{
pluginBody.Append("<tr>");
pluginBody.Append("<td colspan='4'>Cef.GetPlugins returned an empty list - likely no plugins were loaded on your system</td>");
pluginBody.Append("</tr>");
pluginBody.Append("<tr>");
pluginBody.Append("<td colspan='4'>You may find that NPAPI/PPAPI need to be enabled</td>");
pluginBody.Append("</tr>");
}
else
{
foreach (var plugin in plugins)
{
pluginBody.Append("<tr>");
pluginBody.Append("<td>" + plugin.Name + "</td>");
pluginBody.Append("<td>" + plugin.Description + "</td>");
pluginBody.Append("<td>" + plugin.Version + "</td>");
pluginBody.Append("<td>" + plugin.Path + "</td>");
pluginBody.Append("</tr>");
}
}
pluginBody.Append("</table></body></html>");
PluginInformation = pluginBody.ToString();
}
handler.RegisterHandler(PluginsTestUrl, ResourceHandler.GetByteArray(PluginInformation, Encoding.UTF8));
}
}
}
}