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CEF4Delphi/source/uCEFApplication.pas

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// ************************************************************************
// ***************************** CEF4Delphi *******************************
// ************************************************************************
//
// CEF4Delphi is based on DCEF3 which uses CEF3 to embed a chromium-based
// browser in Delphi applications.
//
// The original license of DCEF3 still applies to CEF4Delphi.
//
// For more information about CEF4Delphi visit :
// https://www.briskbard.com/index.php?lang=en&pageid=cef
//
// Copyright © 2017 Salvador Díaz Fau. All rights reserved.
//
// ************************************************************************
// ************ vvvv Original license and comments below vvvv *************
// ************************************************************************
(*
* Delphi Chromium Embedded 3
*
* Usage allowed under the restrictions of the Lesser GNU General Public License
* or alternatively the restrictions of the Mozilla Public License 1.1
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for
* the specific language governing rights and limitations under the License.
*
* Unit owner : Henri Gourvest <hgourvest@gmail.com>
* Web site : http://www.progdigy.com
* Repository : http://code.google.com/p/delphichromiumembedded/
* Group : http://groups.google.com/group/delphichromiumembedded
*
* Embarcadero Technologies, Inc is not permitted to use or redistribute
* this source code without explicit permission.
*
*)
unit uCEFApplication;
{$IFNDEF CPUX64}
{$ALIGN ON}
{$MINENUMSIZE 4}
{$ENDIF}
interface
uses
WinApi.Windows,
uCEFTypes, uCEFInterfaces, uCEFBase;
type
TInternalApp = class;
TCefApplication = class
protected
FLoaded : boolean;
FMustShutDown : boolean;
FCache : ustring;
FCookies : ustring;
FUserDataPath : ustring;
FUserAgent : ustring;
FProductVersion : ustring;
FLocale : ustring;
FLogFile : ustring;
FBrowserSubprocessPath : ustring;
FFrameworkDirPath : ustring;
FLogSeverity : TCefLogSeverity;
FJavaScriptFlags : ustring;
FResourcesDirPath : ustring;
FLocalesDirPath : ustring;
FSingleProcess : Boolean;
FNoSandbox : Boolean;
FCommandLineArgsDisabled : Boolean;
FPackLoadingDisabled : Boolean;
FRemoteDebuggingPort : Integer;
FUncaughtExceptionStackSize : Integer;
FContextSafetyImplementation : Integer;
FPersistSessionCookies : Boolean;
FPersistUserPreferences : boolean;
FIgnoreCertificateErrors : Boolean;
FEnableNetSecurityExpiration : boolean;
FBackgroundColor : TCefColor;
FAcceptLanguageList : ustring;
FWindowsSandboxInfo : Pointer;
FWindowlessRenderingEnabled : Boolean;
FMultiThreadedMessageLoop : boolean;
FExternalMessagePump : boolean;
FDeleteCache : boolean;
FDeleteCookies : boolean;
FApp : TInternalApp;
FAppIntf : ICefApp;
FCustomCommandLine : ustring;
FFlashEnabled : boolean;
procedure ShutDown;
function ExecuteProcess : integer;
procedure InitializeSettings(var aSettings : TCefSettings);
function InitializeLibrary : boolean;
function CreateInternalApp : boolean;
function MultiExeProcessing : boolean;
function SingleExeProcessing : boolean;
procedure App_OnBeforeCommandLineProc(const processType: ustring; const commandLine: ICefCommandLine);
public
constructor Create;
destructor Destroy; override;
function StartMainProcess : boolean;
function StartSubProcess : boolean;
property Cache : ustring read FCache write FCache;
property Cookies : ustring read FCookies write FCookies;
property UserDataPath : ustring read FUserDataPath write FUserDataPath;
property UserAgent : ustring read FUserAgent write FUserAgent;
property ProductVersion : ustring read FProductVersion write FProductVersion;
property Locale : ustring read FLocale write FLocale;
property LogFile : ustring read FLogFile write FLogFile;
property BrowserSubprocessPath : ustring read FBrowserSubprocessPath write FBrowserSubprocessPath;
property FrameworkDirPath : ustring read FFrameworkDirPath write FFrameworkDirPath;
property LogSeverity : TCefLogSeverity read FLogSeverity write FLogSeverity;
property JavaScriptFlags : ustring read FJavaScriptFlags write FJavaScriptFlags;
property ResourcesDirPath : ustring read FResourcesDirPath write FResourcesDirPath;
property LocalesDirPath : ustring read FLocalesDirPath write FLocalesDirPath;
property SingleProcess : Boolean read FSingleProcess write FSingleProcess;
property NoSandbox : Boolean read FNoSandbox write FNoSandbox;
property CommandLineArgsDisabled : Boolean read FCommandLineArgsDisabled write FCommandLineArgsDisabled;
property PackLoadingDisabled : Boolean read FPackLoadingDisabled write FPackLoadingDisabled;
property RemoteDebuggingPort : Integer read FRemoteDebuggingPort write FRemoteDebuggingPort;
property UncaughtExceptionStackSize : Integer read FUncaughtExceptionStackSize write FUncaughtExceptionStackSize;
property ContextSafetyImplementation : Integer read FContextSafetyImplementation write FContextSafetyImplementation;
property PersistSessionCookies : Boolean read FPersistSessionCookies write FPersistSessionCookies;
property PersistUserPreferences : Boolean read FPersistUserPreferences write FPersistUserPreferences;
property IgnoreCertificateErrors : Boolean read FIgnoreCertificateErrors write FIgnoreCertificateErrors;
property EnableNetSecurityExpiration : boolean read FEnableNetSecurityExpiration write FEnableNetSecurityExpiration;
property BackgroundColor : TCefColor read FBackgroundColor write FBackgroundColor;
property AcceptLanguageList : ustring read FAcceptLanguageList write FAcceptLanguageList;
property WindowsSandboxInfo : Pointer read FWindowsSandboxInfo write FWindowsSandboxInfo;
property WindowlessRenderingEnabled : Boolean read FWindowlessRenderingEnabled write FWindowlessRenderingEnabled;
property MultiThreadedMessageLoop : boolean read FMultiThreadedMessageLoop write FMultiThreadedMessageLoop;
property ExternalMessagePump : boolean read FExternalMessagePump write FExternalMessagePump;
property DeleteCache : boolean read FDeleteCache write FDeleteCache;
property DeleteCookies : boolean read FDeleteCookies write FDeleteCookies;
property CustomCommandLine : ustring read FCustomCommandLine write FCustomCommandLine;
property FlashEnabled : boolean read FFlashEnabled write FFlashEnabled;
end;
TCefAppOwn = class(TCefBaseOwn, ICefApp)
protected
procedure OnBeforeCommandLineProcessing(const processType: ustring; const commandLine: ICefCommandLine); virtual; abstract;
procedure OnRegisterCustomSchemes(const registrar: ICefSchemeRegistrar); virtual; abstract;
function GetResourceBundleHandler: ICefResourceBundleHandler; virtual; abstract;
function GetBrowserProcessHandler: ICefBrowserProcessHandler; virtual; abstract;
function GetRenderProcessHandler: ICefRenderProcessHandler; virtual; abstract;
public
constructor Create; virtual;
end;
TInternalApp = class(TCefAppOwn)
protected
FResourceBundleHandler : ICefResourceBundleHandler;
FBrowserProcessHandler : ICefBrowserProcessHandler;
FRenderProcessHandler : ICefRenderProcessHandler;
FOnBeforeCommandLineProcessing : TOnBeforeCommandLineProcessing;
FOnRegisterCustomSchemes : TOnRegisterCustomSchemes;
procedure OnBeforeCommandLineProcessing(const processType: ustring; const commandLine: ICefCommandLine); override;
procedure OnRegisterCustomSchemes(const registrar: ICefSchemeRegistrar); override;
function GetResourceBundleHandler: ICefResourceBundleHandler; override;
function GetBrowserProcessHandler: ICefBrowserProcessHandler; override;
function GetRenderProcessHandler: ICefRenderProcessHandler; override;
public
constructor Create; override;
property ResourceBundleHandler : ICefResourceBundleHandler read FResourceBundleHandler write FResourceBundleHandler;
property BrowserProcessHandler : ICefBrowserProcessHandler read FBrowserProcessHandler write FBrowserProcessHandler;
property RenderProcessHandler : ICefRenderProcessHandler read FRenderProcessHandler write FRenderProcessHandler;
property OnBeforeCommandLineProc : TOnBeforeCommandLineProcessing read FOnBeforeCommandLineProcessing write FOnBeforeCommandLineProcessing;
property OnRegCustomSchemes : TOnRegisterCustomSchemes read FOnRegisterCustomSchemes write FOnRegisterCustomSchemes;
end;
var
GlobalCEFApp : TCefApplication;
implementation
uses
System.Math, System.IOUtils, System.SysUtils,
uCEFLibFunctions, uCEFMiscFunctions, uCEFSchemeRegistrar, uCEFCommandLine;
constructor TCefApplication.Create;
begin
inherited Create;
FLoaded := False;
FMustShutDown := False;
FCache := '';
FCookies := '';
FUserDataPath := '';
FUserAgent := '';
FProductVersion := '';
FLocale := '';
FLogFile := '';
FBrowserSubprocessPath := '';
FFrameworkDirPath := '';
FLogSeverity := LOGSEVERITY_DISABLE;
FJavaScriptFlags := '';
FResourcesDirPath := '';
FLocalesDirPath := '';
FSingleProcess := False;
FNoSandbox := False;
FCommandLineArgsDisabled := False;
FPackLoadingDisabled := False;
FRemoteDebuggingPort := 0;
FUncaughtExceptionStackSize := 0;
FContextSafetyImplementation := 0;
FPersistSessionCookies := False;
FPersistUserPreferences := False;
FIgnoreCertificateErrors := False;
FEnableNetSecurityExpiration := False;
FBackgroundColor := 0;
FAcceptLanguageList := '';
FWindowsSandboxInfo := nil;
FWindowlessRenderingEnabled := False;
FMultiThreadedMessageLoop := True;
FExternalMessagePump := False;
FDeleteCache := False;
FDeleteCookies := False;
FApp := nil;
FAppIntf := nil;
FFlashEnabled := True;
FCustomCommandLine := '';
IsMultiThread := True;
SetExceptionMask([exInvalidOp, exDenormalized, exZeroDivide, exOverflow, exUnderflow, exPrecision]);
end;
destructor TCefApplication.Destroy;
begin
if FLoaded then ShutDown;
FAppIntf := nil;
FApp := nil;
inherited Destroy;
end;
function TCefApplication.CreateInternalApp : boolean;
begin
Result := False;
try
if (FApp = nil) then
begin
FApp := TInternalApp.Create;
FApp.OnBeforeCommandLineProc := App_OnBeforeCommandLineProc;
FAppIntf := FApp as ICefApp;
Result := (FAppIntf <> nil);
end;
except
on e : exception do
begin
{$IFDEF DEBUG}
OutputDebugString(PWideChar('TCefApplication.CreateInternalApp error: ' + e.Message + chr(0)));
{$ENDIF}
end;
end;
end;
function TCefApplication.MultiExeProcessing : boolean;
begin
Result := False;
try
FLoaded := True;
FMustShutDown := True;
Result := CreateInternalApp and InitializeLibrary;
except
on e : exception do
begin
{$IFDEF DEBUG}
OutputDebugString(PWideChar('TCefApplication.MultiExeProcessing error: ' + e.Message + chr(0)));
{$ENDIF}
end;
end;
end;
function TCefApplication.SingleExeProcessing : boolean;
begin
Result := False;
try
FLoaded := True;
if CreateInternalApp and (ExecuteProcess < 0) then
begin
FMustShutDown := True;
Result := InitializeLibrary;
end;
except
on e : exception do
begin
{$IFDEF DEBUG}
OutputDebugString(PWideChar('TCefApplication.SingleExeProcessing error: ' + e.Message + chr(0)));
{$ENDIF}
end;
end;
end;
function TCefApplication.StartMainProcess : boolean;
begin
if not(FSingleProcess) and (length(FBrowserSubprocessPath) > 0) then
Result := MultiExeProcessing
else
Result := SingleExeProcessing;
end;
function TCefApplication.StartSubProcess : boolean;
begin
Result := False;
try
if not(FSingleProcess) then
begin
FLoaded := True;
Result := CreateInternalApp and (ExecuteProcess >= 0);
end;
except
on e : exception do
begin
{$IFDEF DEBUG}
OutputDebugString(PWideChar('TCefApplication.StartSubProcess error: ' + e.Message + chr(0)));
{$ENDIF}
end;
end;
end;
procedure TCefApplication.ShutDown;
begin
try
if FMustShutDown then cef_shutdown;
except
on e : exception do
begin
{$IFDEF DEBUG}
OutputDebugString(PWideChar('TCefApplication.ShutDown error: ' + e.Message + chr(0)));
{$ENDIF}
end;
end;
end;
function TCefApplication.ExecuteProcess : integer;
var
TempArgs : TCefMainArgs;
begin
TempArgs.instance := HINSTANCE;
Result := cef_execute_process(@TempArgs, CefGetData(FAppIntf), FWindowsSandboxInfo);
end;
procedure TCefApplication.InitializeSettings(var aSettings : TCefSettings);
begin
aSettings.size := SizeOf(TCefSettings);
aSettings.single_process := Ord(FSingleProcess);
aSettings.no_sandbox := Ord(FNoSandbox);
aSettings.framework_dir_path := CefString(FFrameworkDirPath);
aSettings.multi_threaded_message_loop := Ord(FMultiThreadedMessageLoop);
aSettings.external_message_pump := Ord(FExternalMessagePump);
aSettings.windowless_rendering_enabled := Ord(FWindowlessRenderingEnabled);
aSettings.cache_path := CefString(FCache);
aSettings.user_data_path := CefString(FUserDataPath);
aSettings.persist_session_cookies := Ord(FPersistSessionCookies);
aSettings.persist_user_preferences := Ord(FPersistUserPreferences);
aSettings.browser_subprocess_path := CefString(FBrowserSubprocessPath);
aSettings.command_line_args_disabled := Ord(FCommandLineArgsDisabled);
aSettings.user_agent := CefString(FUserAgent);
aSettings.product_version := CefString(FProductVersion);
aSettings.locale := CefString(FLocale);
aSettings.log_file := CefString(FLogFile);
aSettings.log_severity := FLogSeverity;
aSettings.javascript_flags := CefString(FJavaScriptFlags);
aSettings.resources_dir_path := CefString(FResourcesDirPath);
aSettings.locales_dir_path := CefString(FLocalesDirPath);
aSettings.pack_loading_disabled := Ord(FPackLoadingDisabled);
aSettings.remote_debugging_port := FRemoteDebuggingPort;
aSettings.uncaught_exception_stack_size := FUncaughtExceptionStackSize;
aSettings.context_safety_implementation := FContextSafetyImplementation;
aSettings.ignore_certificate_errors := Ord(FIgnoreCertificateErrors);
aSettings.enable_net_security_expiration := Ord(FEnableNetSecurityExpiration);
aSettings.background_color := FBackgroundColor;
aSettings.accept_language_list := CefString(FAcceptLanguageList);
end;
function TCefApplication.InitializeLibrary : boolean;
var
TempSettings : TCefSettings;
begin
Result := False;
try
if FDeleteCache and (length(FCache) > 0) then TDirectory.Delete(FCache, True);
if FDeleteCookies and (length(FCookies) > 0) then TDirectory.Delete(FCookies, True);
InitializeSettings(TempSettings);
Result := (cef_initialize(@HInstance, @TempSettings, CefGetData(FAppIntf), FWindowsSandboxInfo) <> 0);
except
on e : exception do
begin
{$IFDEF DEBUG}
OutputDebugString(PWideChar('TCefApplication.InitializeLibrary error: ' + e.Message + chr(0)));
{$ENDIF}
end;
end;
end;
procedure TCefApplication.App_OnBeforeCommandLineProc(const processType : ustring;
const commandLine : ICefCommandLine);
begin
if (commandLine <> nil) then
begin
if FFlashEnabled then
begin
commandLine.AppendSwitch('--enable-gpu-plugin');
commandLine.AppendSwitch('--enable-accelerated-plugins');
commandLine.AppendSwitch('--enable-system-flash');
end;
if (length(FCustomCommandLine) > 0) then commandLine.AppendSwitch(FCustomCommandLine);
end;
end;
// TCefAppOwn
procedure cef_app_on_before_command_line_processing(self: PCefApp;
const process_type: PCefString; command_line: PCefCommandLine); stdcall;
begin
with TCefAppOwn(CefGetObject(self)) do
OnBeforeCommandLineProcessing(CefString(process_type), TCefCommandLineRef.UnWrap(command_line));
end;
procedure cef_app_on_register_custom_schemes(self: PCefApp; registrar: PCefSchemeRegistrar); stdcall;
begin
with TCefAppOwn(CefGetObject(self)) do
OnRegisterCustomSchemes(TCefSchemeRegistrarRef.UnWrap(registrar));
end;
function cef_app_get_resource_bundle_handler(self: PCefApp): PCefResourceBundleHandler; stdcall;
begin
Result := CefGetData(TCefAppOwn(CefGetObject(self)).GetResourceBundleHandler());
end;
function cef_app_get_browser_process_handler(self: PCefApp): PCefBrowserProcessHandler; stdcall;
begin
Result := CefGetData(TCefAppOwn(CefGetObject(self)).GetBrowserProcessHandler());
end;
function cef_app_get_render_process_handler(self: PCefApp): PCefRenderProcessHandler; stdcall;
begin
Result := CefGetData(TCefAppOwn(CefGetObject(self)).GetRenderProcessHandler());
end;
constructor TCefAppOwn.Create;
begin
inherited CreateData(SizeOf(TCefApp));
with PCefApp(FData)^ do
begin
on_before_command_line_processing := cef_app_on_before_command_line_processing;
on_register_custom_schemes := cef_app_on_register_custom_schemes;
get_resource_bundle_handler := cef_app_get_resource_bundle_handler;
get_browser_process_handler := cef_app_get_browser_process_handler;
get_render_process_handler := cef_app_get_render_process_handler;
end;
end;
// TInternalApp
procedure TInternalApp.OnBeforeCommandLineProcessing(const processType: ustring; const commandLine: ICefCommandLine);
begin
if Assigned(FOnBeforeCommandLineProcessing) then FOnBeforeCommandLineProcessing(processType, commandLine);
end;
procedure TInternalApp.OnRegisterCustomSchemes(const registrar: ICefSchemeRegistrar);
begin
if Assigned(FOnRegisterCustomSchemes) then FOnRegisterCustomSchemes(registrar);
end;
function TInternalApp.GetResourceBundleHandler: ICefResourceBundleHandler;
begin
Result := FResourceBundleHandler;
end;
function TInternalApp.GetBrowserProcessHandler: ICefBrowserProcessHandler;
begin
Result := FBrowserProcessHandler;
end;
function TInternalApp.GetRenderProcessHandler: ICefRenderProcessHandler;
begin
Result := FRenderProcessHandler;
end;
constructor TInternalApp.Create;
begin
inherited Create;
FResourceBundleHandler := nil;
FBrowserProcessHandler := nil;
FRenderProcessHandler := nil;
FOnBeforeCommandLineProcessing := nil;
FOnRegisterCustomSchemes := nil;
end;
end.
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