mirror of
https://github.com/salvadordf/CEF4Delphi.git
synced 2024-11-15 15:55:56 +01:00
03f9e9a1b9
Fixed issue #404 : Memory leak with empty TChromiumDefaultUrl Fixed crash in RasperryPi OS 64 bits
610 lines
28 KiB
ObjectPascal
610 lines
28 KiB
ObjectPascal
// ************************************************************************
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// ***************************** CEF4Delphi *******************************
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// ************************************************************************
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//
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// CEF4Delphi is based on DCEF3 which uses CEF to embed a chromium-based
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// browser in Delphi applications.
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//
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// The original license of DCEF3 still applies to CEF4Delphi.
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//
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// For more information about CEF4Delphi visit :
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// https://www.briskbard.com/index.php?lang=en&pageid=cef
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//
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// Copyright © 2022 Salvador Diaz Fau. All rights reserved.
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//
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// ************************************************************************
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// ************ vvvv Original license and comments below vvvv *************
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// ************************************************************************
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(*
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* Delphi Chromium Embedded 3
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*
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* Usage allowed under the restrictions of the Lesser GNU General Public License
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* or alternatively the restrictions of the Mozilla Public License 1.1
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for
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* the specific language governing rights and limitations under the License.
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*
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* Unit owner : Henri Gourvest <hgourvest@gmail.com>
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* Web site : http://www.progdigy.com
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* Repository : http://code.google.com/p/delphichromiumembedded/
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* Group : http://groups.google.com/group/delphichromiumembedded
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*
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* Embarcadero Technologies, Inc is not permitted to use or redistribute
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* this source code without explicit permission.
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*
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*)
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unit uCEFExtensionHandler;
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{$IFDEF FPC}
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{$MODE OBJFPC}{$H+}
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{$ENDIF}
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{$I cef.inc}
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{$IFNDEF TARGET_64BITS}{$ALIGN ON}{$ENDIF}
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{$MINENUMSIZE 4}
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interface
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uses
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uCEFBaseRefCounted, uCEFInterfaces, uCEFTypes;
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type
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TCefExtensionHandlerRef = class(TCefBaseRefCountedRef, ICefExtensionHandler)
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protected
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procedure OnExtensionLoadFailed(result: TCefErrorcode);
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procedure OnExtensionLoaded(const extension: ICefExtension);
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procedure OnExtensionUnloaded(const extension: ICefExtension);
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function OnBeforeBackgroundBrowser(const extension: ICefExtension; const url: ustring; var client: ICefClient; var settings: TCefBrowserSettings) : boolean;
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function OnBeforeBrowser(const extension: ICefExtension; const browser, active_browser: ICefBrowser; index: Integer; const url: ustring; active: boolean; var windowInfo: TCefWindowInfo; var client: ICefClient; var settings: TCefBrowserSettings) : boolean;
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procedure GetActiveBrowser(const extension: ICefExtension; const browser: ICefBrowser; include_incognito: boolean; var aRsltBrowser: ICefBrowser);
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function CanAccessBrowser(const extension: ICefExtension; const browser: ICefBrowser; include_incognito: boolean; const target_browser: ICefBrowser): boolean;
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function GetExtensionResource(const extension: ICefExtension; const browser: ICefBrowser; const file_: ustring; const callback: ICefGetExtensionResourceCallback): boolean;
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procedure RemoveReferences;
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public
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class function UnWrap(data: Pointer): ICefExtensionHandler;
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end;
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TCefExtensionHandlerOwn = class(TCefBaseRefCountedOwn, ICefExtensionHandler)
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protected
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procedure OnExtensionLoadFailed(result: TCefErrorcode); virtual;
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procedure OnExtensionLoaded(const extension: ICefExtension); virtual;
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procedure OnExtensionUnloaded(const extension: ICefExtension); virtual;
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function OnBeforeBackgroundBrowser(const extension: ICefExtension; const url: ustring; var client: ICefClient; var settings: TCefBrowserSettings) : boolean; virtual;
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function OnBeforeBrowser(const extension: ICefExtension; const browser, active_browser: ICefBrowser; index: Integer; const url: ustring; active: boolean; var windowInfo: TCefWindowInfo; var client: ICefClient; var settings: TCefBrowserSettings) : boolean; virtual;
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procedure GetActiveBrowser(const extension: ICefExtension; const browser: ICefBrowser; include_incognito: boolean; var aRsltBrowser: ICefBrowser); virtual;
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function CanAccessBrowser(const extension: ICefExtension; const browser: ICefBrowser; include_incognito: boolean; const target_browser: ICefBrowser): boolean; virtual;
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function GetExtensionResource(const extension: ICefExtension; const browser: ICefBrowser; const file_: ustring; const callback: ICefGetExtensionResourceCallback): boolean; virtual;
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procedure RemoveReferences; virtual;
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public
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constructor Create; virtual;
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end;
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TCustomExtensionHandler = class(TCefExtensionHandlerOwn)
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protected
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FEvents : Pointer;
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procedure OnExtensionLoadFailed(result: TCefErrorcode); override;
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procedure OnExtensionLoaded(const extension: ICefExtension); override;
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procedure OnExtensionUnloaded(const extension: ICefExtension); override;
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function OnBeforeBackgroundBrowser(const extension: ICefExtension; const url: ustring; var client: ICefClient; var settings: TCefBrowserSettings) : boolean; override;
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function OnBeforeBrowser(const extension: ICefExtension; const browser, active_browser: ICefBrowser; index: Integer; const url: ustring; active: boolean; var windowInfo: TCefWindowInfo; var client: ICefClient; var settings: TCefBrowserSettings) : boolean; override;
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procedure GetActiveBrowser(const extension: ICefExtension; const browser: ICefBrowser; include_incognito: boolean; var aRsltBrowser: ICefBrowser); override;
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function CanAccessBrowser(const extension: ICefExtension; const browser: ICefBrowser; include_incognito: boolean; const target_browser: ICefBrowser): boolean; override;
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function GetExtensionResource(const extension: ICefExtension; const browser: ICefBrowser; const file_: ustring; const callback: ICefGetExtensionResourceCallback): boolean; override;
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procedure RemoveReferences; override;
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public
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constructor Create(const events: IChromiumEvents); reintroduce;
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destructor Destroy; override;
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end;
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implementation
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uses
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{$IFDEF DELPHI16_UP}
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System.SysUtils,
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{$ELSE}
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SysUtils,
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{$ENDIF}
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uCEFMiscFunctions, uCEFLibFunctions, uCEFGetExtensionResourceCallback,
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uCEFExtension, uCEFBrowser, uCEFClient;
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// ***************************************************************************
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// ************************ TCefExtensionHandlerRef **************************
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// ***************************************************************************
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procedure TCefExtensionHandlerRef.OnExtensionLoadFailed(result: TCefErrorcode);
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begin
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//
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end;
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procedure TCefExtensionHandlerRef.OnExtensionLoaded(const extension: ICefExtension);
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begin
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//
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end;
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procedure TCefExtensionHandlerRef.OnExtensionUnloaded(const extension: ICefExtension);
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begin
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//
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end;
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function TCefExtensionHandlerRef.OnBeforeBackgroundBrowser(const extension : ICefExtension;
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const url : ustring;
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var client : ICefClient;
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var settings : TCefBrowserSettings) : boolean;
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begin
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Result := False;
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end;
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function TCefExtensionHandlerRef.OnBeforeBrowser(const extension : ICefExtension;
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const browser : ICefBrowser;
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const active_browser : ICefBrowser;
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index : Integer;
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const url : ustring;
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active : boolean;
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var windowInfo : TCefWindowInfo;
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var client : ICefClient;
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var settings : TCefBrowserSettings) : boolean;
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begin
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Result := False;
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end;
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procedure TCefExtensionHandlerRef.GetActiveBrowser(const extension : ICefExtension;
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const browser : ICefBrowser;
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include_incognito : boolean;
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var aRsltBrowser : ICefBrowser);
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begin
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aRsltBrowser := nil;
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end;
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function TCefExtensionHandlerRef.CanAccessBrowser(const extension : ICefExtension;
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const browser : ICefBrowser;
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include_incognito : boolean;
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const target_browser : ICefBrowser): boolean;
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begin
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Result := True;
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end;
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function TCefExtensionHandlerRef.GetExtensionResource(const extension : ICefExtension;
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const browser : ICefBrowser;
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const file_ : ustring;
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const callback : ICefGetExtensionResourceCallback): boolean;
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begin
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Result := False;
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end;
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procedure TCefExtensionHandlerRef.RemoveReferences;
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begin
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//
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end;
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class function TCefExtensionHandlerRef.UnWrap(data: Pointer): ICefExtensionHandler;
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begin
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if (data <> nil) then
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Result := Create(data) as ICefExtensionHandler
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else
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Result := nil;
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end;
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// ***************************************************************************
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// ************************ TCefExtensionHandlerOwn **************************
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// ***************************************************************************
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procedure cef_extension_handler_on_extension_load_failed(self : PCefExtensionHandler;
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result : TCefErrorcode); stdcall;
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var
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TempObject : TObject;
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begin
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TempObject := CefGetObject(self);
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if (TempObject <> nil) and (TempObject is TCefExtensionHandlerOwn) then
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TCefExtensionHandlerOwn(TempObject).OnExtensionLoadFailed(result);
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end;
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procedure cef_extension_handler_on_extension_loaded(self : PCefExtensionHandler;
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extension : PCefExtension); stdcall;
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var
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TempObject : TObject;
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begin
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TempObject := CefGetObject(self);
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if (TempObject <> nil) and (TempObject is TCefExtensionHandlerOwn) then
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TCefExtensionHandlerOwn(TempObject).OnExtensionLoaded(TCefExtensionRef.UnWrap(extension));
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end;
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procedure cef_extension_handler_on_extension_unloaded(self : PCefExtensionHandler;
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extension : PCefExtension); stdcall;
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var
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TempObject : TObject;
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begin
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TempObject := CefGetObject(self);
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if (TempObject <> nil) and (TempObject is TCefExtensionHandlerOwn) then
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TCefExtensionHandlerOwn(TempObject).OnExtensionUnloaded(TCefExtensionRef.UnWrap(extension));
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end;
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function cef_extension_handler_on_before_background_browser( self : PCefExtensionHandler;
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extension : PCefExtension;
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const url : PCefString;
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var client : PCefClient;
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settings : PCefBrowserSettings) : Integer; stdcall;
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var
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TempClient : ICefClient;
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TempObject : TObject;
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begin
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try
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Result := Ord(True);
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TempObject := CefGetObject(self);
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TempClient := TCefClientRef.UnWrap(client);
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if (TempObject <> nil) and (TempObject is TCefExtensionHandlerOwn) then
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Result := Ord(TCefExtensionHandlerOwn(TempObject).OnBeforeBackgroundBrowser(TCefExtensionRef.UnWrap(extension),
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CefString(url),
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TempClient,
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settings^));
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if (TempClient = nil) then
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client := nil
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else
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if not(TempClient.SameAs(client)) then
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client := TempClient.Wrap;
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finally
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TempClient := nil;
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end;
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end;
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function cef_extension_handler_on_before_browser( self : PCefExtensionHandler;
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extension : PCefExtension;
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browser : PCefBrowser;
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active_browser : PCefBrowser;
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index : Integer;
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const url : PCefString;
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active : Integer;
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windowInfo : PCefWindowInfo;
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var client : PCefClient;
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settings : PCefBrowserSettings) : Integer; stdcall;
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var
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TempClient : ICefClient;
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TempObject : TObject;
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begin
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try
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Result := Ord(True);
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TempObject := CefGetObject(self);
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TempClient := TCefClientRef.UnWrap(client);
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if (TempObject <> nil) and (TempObject is TCefExtensionHandlerOwn) then
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Result := Ord(TCefExtensionHandlerOwn(TempObject).OnBeforeBrowser(TCefExtensionRef.UnWrap(extension),
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TCefBrowserRef.UnWrap(browser),
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TCefBrowserRef.UnWrap(active_browser),
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index,
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CefString(url),
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active <> 0,
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windowInfo^,
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TempClient,
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settings^));
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if (TempClient = nil) then
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client := nil
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else
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if not(TempClient.SameAs(client)) then
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client := TempClient.Wrap;
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finally
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TempClient := nil;
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end;
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end;
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function cef_extension_handler_get_active_browser(self : PCefExtensionHandler;
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extension : PCefExtension;
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browser : PCefBrowser;
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include_incognito : Integer): PCefBrowser; stdcall;
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var
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TempObject : TObject;
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TempBrowser : ICefBrowser;
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begin
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Result := nil;
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TempBrowser := nil;
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TempObject := CefGetObject(self);
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if (TempObject <> nil) and (TempObject is TCefExtensionHandlerOwn) then
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try
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TCefExtensionHandlerOwn(TempObject).GetActiveBrowser(TCefExtensionRef.UnWrap(extension),
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TCefBrowserRef.UnWrap(browser),
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include_incognito <> 0,
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TempBrowser);
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if (TempBrowser <> nil) {$IFDEF DELPHI16_UP}and (TempBrowser is TCefBrowserRef){$ENDIF} then
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Result := TCefBrowserRef(TempBrowser).wrap;
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finally
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TempBrowser := nil;
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end;
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end;
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function cef_extension_handler_can_access_browser(self : PCefExtensionHandler;
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extension : PCefExtension;
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browser : PCefBrowser;
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include_incognito : Integer;
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target_browser : PCefBrowser): Integer; stdcall;
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var
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TempObject : TObject;
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begin
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Result := Ord(True);
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TempObject := CefGetObject(self);
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if (TempObject <> nil) and (TempObject is TCefExtensionHandlerOwn) then
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Result := Ord(TCefExtensionHandlerOwn(TempObject).CanAccessBrowser(TCefExtensionRef.UnWrap(extension),
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TCefBrowserRef.UnWrap(browser),
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include_incognito <> 0,
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TCefBrowserRef.UnWrap(target_browser)));
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end;
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function cef_extension_handler_get_extension_resource( self : PCefExtensionHandler;
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extension : PCefExtension;
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browser : PCefBrowser;
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const file_ : PCefString;
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callback : PCefGetExtensionResourceCallback): Integer; stdcall;
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var
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TempObject : TObject;
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begin
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Result := Ord(False);
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TempObject := CefGetObject(self);
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if (TempObject <> nil) and (TempObject is TCefExtensionHandlerOwn) then
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Result := Ord(TCefExtensionHandlerOwn(TempObject).GetExtensionResource(TCefExtensionRef.UnWrap(extension),
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TCefBrowserRef.UnWrap(browser),
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CefString(file_),
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TCefGetExtensionResourceCallbackRef.UnWrap(callback)));
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end;
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constructor TCefExtensionHandlerOwn.Create;
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begin
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inherited CreateData(SizeOf(TCefExtensionHandler));
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with PCefExtensionHandler(FData)^ do
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begin
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on_extension_load_failed := {$IFDEF FPC}@{$ENDIF}cef_extension_handler_on_extension_load_failed;
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on_extension_loaded := {$IFDEF FPC}@{$ENDIF}cef_extension_handler_on_extension_loaded;
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on_extension_unloaded := {$IFDEF FPC}@{$ENDIF}cef_extension_handler_on_extension_unloaded;
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on_before_background_browser := {$IFDEF FPC}@{$ENDIF}cef_extension_handler_on_before_background_browser;
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on_before_browser := {$IFDEF FPC}@{$ENDIF}cef_extension_handler_on_before_browser;
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get_active_browser := {$IFDEF FPC}@{$ENDIF}cef_extension_handler_get_active_browser;
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can_access_browser := {$IFDEF FPC}@{$ENDIF}cef_extension_handler_can_access_browser;
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get_extension_resource := {$IFDEF FPC}@{$ENDIF}cef_extension_handler_get_extension_resource;
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end;
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end;
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procedure TCefExtensionHandlerOwn.OnExtensionLoadFailed(result: TCefErrorcode);
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begin
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//
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end;
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procedure TCefExtensionHandlerOwn.OnExtensionLoaded(const extension: ICefExtension);
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begin
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//
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end;
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procedure TCefExtensionHandlerOwn.OnExtensionUnloaded(const extension: ICefExtension);
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begin
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//
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end;
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function TCefExtensionHandlerOwn.OnBeforeBackgroundBrowser(const extension : ICefExtension;
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const url : ustring;
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var client : ICefClient;
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var settings : TCefBrowserSettings) : boolean;
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begin
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Result := False;
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end;
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function TCefExtensionHandlerOwn.OnBeforeBrowser(const extension : ICefExtension;
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const browser : ICefBrowser;
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const active_browser : ICefBrowser;
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index : Integer;
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const url : ustring;
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active : boolean;
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var windowInfo : TCefWindowInfo;
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var client : ICefClient;
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var settings : TCefBrowserSettings) : boolean;
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begin
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Result := False;
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end;
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procedure TCefExtensionHandlerOwn.GetActiveBrowser(const extension : ICefExtension;
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const browser : ICefBrowser;
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include_incognito : boolean;
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var aRsltBrowser : ICefBrowser);
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begin
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//
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end;
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function TCefExtensionHandlerOwn.CanAccessBrowser(const extension : ICefExtension;
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const browser : ICefBrowser;
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include_incognito : boolean;
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const target_browser : ICefBrowser): boolean;
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begin
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Result := True;
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end;
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function TCefExtensionHandlerOwn.GetExtensionResource(const extension : ICefExtension;
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const browser : ICefBrowser;
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const file_ : ustring;
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const callback : ICefGetExtensionResourceCallback): boolean;
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begin
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Result := False;
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end;
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procedure TCefExtensionHandlerOwn.RemoveReferences;
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begin
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//
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end;
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// ***************************************************************************
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// ************************ TCustomExtensionHandler **************************
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// ***************************************************************************
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constructor TCustomExtensionHandler.Create(const events: IChromiumEvents);
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begin
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inherited Create;
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FEvents := Pointer(events);
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end;
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destructor TCustomExtensionHandler.Destroy;
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begin
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RemoveReferences;
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inherited Destroy;
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end;
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procedure TCustomExtensionHandler.RemoveReferences;
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begin
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FEvents := nil;
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end;
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procedure TCustomExtensionHandler.OnExtensionLoadFailed(result: TCefErrorcode);
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begin
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try
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if (FEvents <> nil) then
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IChromiumEvents(FEvents).doOnExtensionLoadFailed(result);
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except
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on e : exception do
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if CustomExceptionHandler('TCustomExtensionHandler.OnExtensionLoadFailed', e) then raise;
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end;
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end;
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procedure TCustomExtensionHandler.OnExtensionLoaded(const extension: ICefExtension);
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begin
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try
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if (FEvents <> nil) then
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IChromiumEvents(FEvents).doOnExtensionLoaded(extension);
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except
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on e : exception do
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if CustomExceptionHandler('TCustomExtensionHandler.OnExtensionLoaded', e) then raise;
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end;
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end;
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procedure TCustomExtensionHandler.OnExtensionUnloaded(const extension: ICefExtension);
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begin
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try
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if (FEvents <> nil) then
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IChromiumEvents(FEvents).doOnExtensionUnloaded(extension);
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except
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on e : exception do
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if CustomExceptionHandler('TCustomExtensionHandler.OnExtensionUnloaded', e) then raise;
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end;
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end;
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function TCustomExtensionHandler.OnBeforeBackgroundBrowser(const extension : ICefExtension;
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const url : ustring;
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var client : ICefClient;
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var settings : TCefBrowserSettings) : boolean;
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begin
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Result := False;
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try
|
|
if (FEvents <> nil) then
|
|
Result := IChromiumEvents(FEvents).doOnExtensionBeforeBackgroundBrowser(extension,
|
|
url,
|
|
client,
|
|
settings);
|
|
except
|
|
on e : exception do
|
|
if CustomExceptionHandler('TCustomExtensionHandler.OnBeforeBackgroundBrowser', e) then raise;
|
|
end;
|
|
end;
|
|
|
|
function TCustomExtensionHandler.OnBeforeBrowser(const extension : ICefExtension;
|
|
const browser : ICefBrowser;
|
|
const active_browser : ICefBrowser;
|
|
index : Integer;
|
|
const url : ustring;
|
|
active : boolean;
|
|
var windowInfo : TCefWindowInfo;
|
|
var client : ICefClient;
|
|
var settings : TCefBrowserSettings) : boolean;
|
|
begin
|
|
Result := False;
|
|
|
|
try
|
|
if (FEvents <> nil) then
|
|
Result := IChromiumEvents(FEvents).doOnExtensionBeforeBrowser(extension,
|
|
browser,
|
|
active_browser,
|
|
index,
|
|
url,
|
|
active,
|
|
windowInfo,
|
|
client,
|
|
settings);
|
|
except
|
|
on e : exception do
|
|
if CustomExceptionHandler('TCustomExtensionHandler.OnBeforeBrowser', e) then raise;
|
|
end;
|
|
end;
|
|
|
|
procedure TCustomExtensionHandler.GetActiveBrowser(const extension : ICefExtension;
|
|
const browser : ICefBrowser;
|
|
include_incognito : boolean;
|
|
var aRsltBrowser : ICefBrowser);
|
|
begin
|
|
try
|
|
if (FEvents <> nil) then
|
|
IChromiumEvents(FEvents).doOnExtensionGetActiveBrowser(extension,
|
|
browser,
|
|
include_incognito,
|
|
aRsltBrowser);
|
|
except
|
|
on e : exception do
|
|
if CustomExceptionHandler('TCustomExtensionHandler.GetActiveBrowser', e) then raise;
|
|
end;
|
|
end;
|
|
|
|
function TCustomExtensionHandler.CanAccessBrowser(const extension : ICefExtension;
|
|
const browser : ICefBrowser;
|
|
include_incognito : boolean;
|
|
const target_browser : ICefBrowser): boolean;
|
|
begin
|
|
Result := True;
|
|
|
|
try
|
|
if (FEvents <> nil) then
|
|
Result := IChromiumEvents(FEvents).doOnExtensionCanAccessBrowser(extension,
|
|
browser,
|
|
include_incognito,
|
|
target_browser);
|
|
except
|
|
on e : exception do
|
|
if CustomExceptionHandler('TCustomExtensionHandler.CanAccessBrowser', e) then raise;
|
|
end;
|
|
end;
|
|
|
|
function TCustomExtensionHandler.GetExtensionResource(const extension : ICefExtension;
|
|
const browser : ICefBrowser;
|
|
const file_ : ustring;
|
|
const callback : ICefGetExtensionResourceCallback): boolean;
|
|
begin
|
|
Result := False;
|
|
|
|
try
|
|
if (FEvents <> nil) then
|
|
Result := IChromiumEvents(FEvents).doOnExtensionGetExtensionResource(extension,
|
|
browser,
|
|
file_,
|
|
callback);
|
|
except
|
|
on e : exception do
|
|
if CustomExceptionHandler('TCustomExtensionHandler.GetExtensionResource', e) then raise;
|
|
end;
|
|
end;
|
|
|
|
end.
|