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// Copyright © 2010-2015 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.Text;
using System.Threading.Tasks;
using CefSharp.Example.Properties;
using CefSharp.Example.Proxy;
namespace CefSharp.Example
{
public static class CefExample
{
public const string DefaultUrl = "custom://cefsharp/home.html";
public const string BindingTestUrl = "custom://cefsharp/BindingTest.html";
public const string PluginsTestUrl = "custom://cefsharp/plugins.html";
public const string PopupTestUrl = "custom://cefsharp/PopupTest.html";
public const string BasicSchemeTestUrl = "custom://cefsharp/SchemeTest.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(bool osr, bool multiThreadedMessageLoop)
{
// 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", "");
//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.
var settings = new CefSettings();
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.CachePath = "cache";
//settings.UserAgent = "CefSharp Browser" + Cef.CefSharpVersion; // Example User Agent
//settings.CefCommandLineArgs.Add("renderer-process-limit", "1");
//settings.CefCommandLineArgs.Add("renderer-startup-dialog", "1");
//settings.CefCommandLineArgs.Add("enable-media-stream", "1"); //Enable WebRTC
//settings.CefCommandLineArgs.Add("no-proxy-server", "1"); //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", "1"); //Dumps extra logging about plugin loading to the log file.
//settings.CefCommandLineArgs.Add("disable-plugins-discovery", "1"); //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", "1"); //Automatically discovered and load a system-wide installation of Pepper Flash.
//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)
//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", "1");
//settings.CefCommandLineArgs.Add("disable-gpu-compositing", "1");
//settings.CefCommandLineArgs.Add("enable-begin-frame-scheduling", "1");
//settings.CefCommandLineArgs.Add("disable-gpu-vsync", "1"); //Disable Vsync
//Disables the DirectWrite font rendering system on windows.
//Possibly useful when experiencing blury fonts.
//settings.CefCommandLineArgs.Add("disable-direct-write", "1");
settings.MultiThreadedMessageLoop = multiThreadedMessageLoop;
// Off Screen rendering (WPF/Offscreen)
if(osr)
{
settings.WindowlessRenderingEnabled = true;
// Disable Surfaces so internal PDF viewer works for OSR
// https://bitbucket.org/chromiumembedded/cef/issues/1689
//settings.CefCommandLineArgs.Add("disable-surfaces", "1");
settings.EnableInternalPdfViewerOffScreen();
settings.CefCommandLineArgs.Add("enable-begin-frame-scheduling", "1");
}
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", "1");
break;
}
case InternetOpenType.Proxy:
{
settings.CefCommandLineArgs.Add("proxy-server", proxy.ProxyAddress);
break;
}
case InternetOpenType.PreConfig:
{
settings.CefCommandLineArgs.Add("proxy-auto-detect", "1");
break;
}
}
settings.LogSeverity = LogSeverity.Verbose;
if (DebuggingSubProcess)
{
var architecture = Environment.Is64BitProcess ? "x64" : "x86";
settings.BrowserSubprocessPath = "..\\..\\..\\..\\CefSharp.BrowserSubprocess\\bin\\" + architecture + "\\Debug\\CefSharp.BrowserSubprocess.exe";
}
settings.RegisterScheme(new CefCustomScheme
{
SchemeName = CefSharpSchemeHandlerFactory.SchemeName,
SchemeHandlerFactory = new CefSharpSchemeHandlerFactory()
});
settings.RegisterScheme(new CefCustomScheme
{
SchemeName = CefSharpSchemeHandlerFactory.SchemeNameTest,
SchemeHandlerFactory = new CefSharpSchemeHandlerFactory()
});
settings.RegisterExtension(new CefExtension("cefsharp/example", Resources.extension));
settings.FocusedNodeChangedEnabled = true;
Cef.OnContextInitialized = delegate
{
var cookieManager = Cef.GetGlobalCookieManager();
cookieManager.SetStoragePath("cookies", true);
cookieManager.SetSupportedSchemes("custom");
};
if (!Cef.Initialize(settings, shutdownOnProcessExit: true, performDependencyCheck: !DebuggingSubProcess))
{
throw new Exception("Unable to Initialize Cef");
}
}
public static async void RegisterTestResources(IWebBrowser browser)
{
var handler = browser.ResourceHandlerFactory as DefaultResourceHandlerFactory;
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.FromString(renderProcessCrashedBody));
const string responseBody = "<html><body><h1>Success</h1><p>This document is loaded from a System.IO.Stream</p></body></html>";
var response = ResourceHandler.FromString(responseBody);
response.Headers.Add("HeaderTest1", "HeaderTest1Value");
handler.RegisterHandler(TestResourceUrl, response);
const string unicodeResponseBody = "<html><body>整体满意度</body></html>";
handler.RegisterHandler(TestUnicodeResourceUrl, ResourceHandler.FromString(unicodeResponseBody));
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>");
try
{
var plugins = await Cef.GetPlugins();
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>");
}
}
catch (TaskCanceledException ex)
{
pluginBody.Append("<tr>");
pluginBody.Append("<td colspan='4'>Cef.GetPlugins Timed out - 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>");
}
pluginBody.Append("</table></body></html>");
PluginInformation = pluginBody.ToString();
}
handler.RegisterHandler(PluginsTestUrl, ResourceHandler.FromString(PluginInformation));
}
}
}
}