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mirror of https://github.com/salvadordf/CEF4Delphi.git synced 2024-12-04 09:26:52 +02:00
CEF4Delphi/source/uCEFBrowserProcessHandler.pas
2020-08-29 11:48:12 +02:00

205 lines
6.8 KiB
ObjectPascal

// ************************************************************************
// ***************************** CEF4Delphi *******************************
// ************************************************************************
//
// CEF4Delphi is based on DCEF3 which uses CEF 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 © 2020 Salvador Diaz 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 uCEFBrowserProcessHandler;
{$IFDEF FPC}
{$MODE OBJFPC}{$H+}
{$ENDIF}
{$IFNDEF CPUX64}{$ALIGN ON}{$ENDIF}
{$MINENUMSIZE 4}
{$I cef.inc}
interface
uses
uCEFBaseRefCounted, uCEFInterfaces, uCEFTypes, uCEFApplicationCore;
type
TCefBrowserProcessHandlerOwn = class(TCefBaseRefCountedOwn, ICefBrowserProcessHandler)
protected
procedure OnContextInitialized; virtual; abstract;
procedure OnBeforeChildProcessLaunch(const commandLine: ICefCommandLine); virtual; abstract;
procedure GetPrintHandler(var aHandler : ICefPrintHandler); virtual;
procedure OnScheduleMessagePumpWork(const delayMs: Int64); virtual; abstract;
public
constructor Create; virtual;
end;
TCefCustomBrowserProcessHandler = class(TCefBrowserProcessHandlerOwn)
protected
FCefApp : TCefApplicationCore;
procedure OnContextInitialized; override;
procedure OnBeforeChildProcessLaunch(const commandLine: ICefCommandLine); override;
procedure OnScheduleMessagePumpWork(const delayMs: Int64); override;
public
constructor Create(const aCefApp : TCefApplicationCore); reintroduce;
destructor Destroy; override;
end;
implementation
uses
{$IFDEF DELPHI16_UP}
System.SysUtils,
{$ELSE}
SysUtils,
{$ENDIF}
uCEFMiscFunctions, uCEFLibFunctions, uCEFCommandLine, uCEFListValue, uCEFConstants;
procedure cef_browser_process_handler_on_context_initialized(self: PCefBrowserProcessHandler); stdcall;
var
TempObject : TObject;
begin
TempObject := CefGetObject(self);
if (TempObject <> nil) and (TempObject is TCefBrowserProcessHandlerOwn) then
TCefBrowserProcessHandlerOwn(TempObject).OnContextInitialized;
end;
procedure cef_browser_process_handler_on_before_child_process_launch(self : PCefBrowserProcessHandler;
command_line : PCefCommandLine); stdcall;
var
TempObject : TObject;
begin
TempObject := CefGetObject(self);
if (TempObject <> nil) and (TempObject is TCefBrowserProcessHandlerOwn) then
TCefBrowserProcessHandlerOwn(TempObject).OnBeforeChildProcessLaunch(TCefCommandLineRef.UnWrap(command_line));
end;
function cef_browser_process_handler_get_print_handler(self: PCefBrowserProcessHandler): PCefPrintHandler; stdcall;
var
TempObject : TObject;
TempHandler : ICefPrintHandler;
begin
Result := nil;
TempObject := CefGetObject(self);
if (TempObject <> nil) and (TempObject is TCefBrowserProcessHandlerOwn) then
try
TCefBrowserProcessHandlerOwn(TempObject).GetPrintHandler(TempHandler);
if (TempHandler <> nil) then Result := TempHandler.Wrap;
finally
TempHandler := nil;
end;
end;
procedure cef_browser_process_handler_on_schedule_message_pump_work(self : PCefBrowserProcessHandler;
delay_ms : Int64); stdcall;
var
TempObject : TObject;
begin
TempObject := CefGetObject(self);
if (TempObject <> nil) and (TempObject is TCefBrowserProcessHandlerOwn) then
TCefBrowserProcessHandlerOwn(TempObject).OnScheduleMessagePumpWork(delay_ms);
end;
constructor TCefBrowserProcessHandlerOwn.Create;
begin
inherited CreateData(SizeOf(TCefBrowserProcessHandler));
with PCefBrowserProcessHandler(FData)^ do
begin
on_context_initialized := {$IFDEF FPC}@{$ENDIF}cef_browser_process_handler_on_context_initialized;
on_before_child_process_launch := {$IFDEF FPC}@{$ENDIF}cef_browser_process_handler_on_before_child_process_launch;
get_print_handler := {$IFDEF FPC}@{$ENDIF}cef_browser_process_handler_get_print_handler;
on_schedule_message_pump_work := {$IFDEF FPC}@{$ENDIF}cef_browser_process_handler_on_schedule_message_pump_work;
end;
end;
procedure TCefBrowserProcessHandlerOwn.GetPrintHandler(var aHandler : ICefPrintHandler);
begin
aHandler := nil; // only linux
end;
// TCefCustomBrowserProcessHandler
constructor TCefCustomBrowserProcessHandler.Create(const aCefApp : TCefApplicationCore);
begin
inherited Create;
FCefApp := aCefApp;
end;
destructor TCefCustomBrowserProcessHandler.Destroy;
begin
FCefApp := nil;
inherited Destroy;
end;
procedure TCefCustomBrowserProcessHandler.OnContextInitialized;
begin
try
if (FCefApp <> nil) then FCefApp.Internal_OnContextInitialized;
except
on e : exception do
if CustomExceptionHandler('TCefCustomBrowserProcessHandler.OnContextInitialized', e) then raise;
end;
end;
procedure TCefCustomBrowserProcessHandler.OnBeforeChildProcessLaunch(const commandLine: ICefCommandLine);
begin
try
if (FCefApp <> nil) then FCefApp.Internal_OnBeforeChildProcessLaunch(commandLine);
except
on e : exception do
if CustomExceptionHandler('TCefCustomBrowserProcessHandler.OnBeforeChildProcessLaunch', e) then raise;
end;
end;
procedure TCefCustomBrowserProcessHandler.OnScheduleMessagePumpWork(const delayMs: Int64);
begin
try
if (FCefApp <> nil) then FCefApp.Internal_OnScheduleMessagePumpWork(delayMs);
except
on e : exception do
if CustomExceptionHandler('TCefCustomBrowserProcessHandler.OnScheduleMessagePumpWork', e) then raise;
end;
end;
end.