mirror of
https://github.com/salvadordf/CEF4Delphi.git
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223 lines
7.4 KiB
ObjectPascal
223 lines
7.4 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 CEF3 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 © 2017 Salvador Díaz 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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program MiniBrowser;
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{$I cef.inc}
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uses
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{$IFDEF DELPHI16_UP}
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Vcl.Forms, System.SysUtils,
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{$ELSE}
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Forms, SysUtils,
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{$ENDIF}
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uCEFApplication,
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uCEFMiscFunctions,
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uCEFSchemeRegistrar,
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uCEFRenderProcessHandler,
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uCEFv8Handler,
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uCEFInterfaces,
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uCEFDomVisitor,
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uCEFDomNode,
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uCEFConstants,
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uCEFTypes,
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uCEFTask,
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uMiniBrowser in 'uMiniBrowser.pas' {MiniBrowserFrm},
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uTestExtension in 'uTestExtension.pas',
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uHelloScheme in 'uHelloScheme.pas',
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uPreferences in 'uPreferences.pas' {PreferencesFrm};
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{$R *.res}
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// CEF3 needs to set the LARGEADDRESSAWARE flag which allows 32-bit processes to use up to 3GB of RAM.
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{$SetPEFlags IMAGE_FILE_LARGE_ADDRESS_AWARE}
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var
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TempProcessHandler : TCefCustomRenderProcessHandler;
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procedure SimpleDOMIteration(const aDocument: ICefDomDocument);
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var
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TempHead, TempChild : ICefDomNode;
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begin
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try
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if (aDocument <> nil) then
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begin
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TempHead := aDocument.Head;
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if (TempHead <> nil) then
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begin
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TempChild := TempHead.FirstChild;
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while (TempChild <> nil) do
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begin
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CefLog('CEF4Delphi', 1, CEF_LOG_SEVERITY_ERROR, 'Head child element : ' + TempChild.Name);
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TempChild := TempChild.NextSibling;
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end;
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end;
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end;
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except
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on e : exception do
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if CustomExceptionHandler('SimpleDOMIteration', e) then raise;
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end;
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end;
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procedure SimpleNodeSearch(const aDocument: ICefDomDocument);
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const
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NODE_ID = 'lst-ib';
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var
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TempNode : ICefDomNode;
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begin
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try
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if (aDocument <> nil) then
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begin
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TempNode := aDocument.GetElementById(NODE_ID);
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if (TempNode <> nil) then
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CefLog('CEF4Delphi', 1, CEF_LOG_SEVERITY_ERROR, NODE_ID + ' element name : ' + TempNode.Name);
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TempNode := aDocument.GetFocusedNode;
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if (TempNode <> nil) then
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CefLog('CEF4Delphi', 1, CEF_LOG_SEVERITY_ERROR, 'Focused element name : ' + TempNode.Name);
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end;
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except
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on e : exception do
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if CustomExceptionHandler('SimpleNodeSearch', e) then raise;
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end;
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end;
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procedure DOMVisitor_OnDocAvailable(const document: ICefDomDocument);
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begin
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// This function is called from a different process.
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// document is only valid inside this function.
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// As an example, this function only writes the document title to the 'debug.log' file.
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CefLog('CEF4Delphi', 1, CEF_LOG_SEVERITY_ERROR, 'document.Title : ' + document.Title);
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// Simple DOM iteration example
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SimpleDOMIteration(document);
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// Simple DOM searches
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SimpleNodeSearch(document);
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end;
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procedure ProcessHandler_OnCustomMessage(const browser: ICefBrowser; sourceProcess: TCefProcessId; const message: ICefProcessMessage);
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var
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TempFrame : ICefFrame;
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TempVisitor : TCefFastDomVisitor;
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begin
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if (browser <> nil) then
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begin
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TempFrame := browser.MainFrame;
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if (TempFrame <> nil) then
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begin
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TempVisitor := TCefFastDomVisitor.Create(DOMVisitor_OnDocAvailable);
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TempFrame.VisitDom(TempVisitor);
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end;
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end;
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end;
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procedure ProcessHandler_OnWebKitReady;
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begin
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{$IFDEF DELPHI14_UP}
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// Registering the extension. Read this document for more details :
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// https://bitbucket.org/chromiumembedded/cef/wiki/JavaScriptIntegration.md
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TCefRTTIExtension.Register('myextension', TTestExtension);
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{$ENDIF}
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end;
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procedure GlobalCEFApp_OnRegCustomSchemes(const registrar: TCefSchemeRegistrarRef);
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begin
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registrar.AddCustomScheme('hello', True, True, False, False, False, False);
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end;
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begin
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// This ProcessHandler is used for the extension and the DOM visitor demos.
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// It can be removed if you don't want those features.
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TempProcessHandler := TCefCustomRenderProcessHandler.Create;
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TempProcessHandler.MessageName := 'retrievedom'; // same message name than TMiniBrowserFrm.VisitDOMMsg
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TempProcessHandler.OnCustomMessage := ProcessHandler_OnCustomMessage;
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TempProcessHandler.OnWebKitReady := ProcessHandler_OnWebKitReady;
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GlobalCEFApp := TCefApplication.Create;
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GlobalCEFApp.RemoteDebuggingPort := 9000;
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GlobalCEFApp.RenderProcessHandler := TempProcessHandler as ICefRenderProcessHandler;
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GlobalCEFApp.OnRegCustomSchemes := GlobalCEFApp_OnRegCustomSchemes;
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// In case you want to use custom directories for the CEF3 binaries, cache, cookies and user data.
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{
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GlobalCEFApp.FrameworkDirPath := 'cef';
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GlobalCEFApp.ResourcesDirPath := 'cef';
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GlobalCEFApp.LocalesDirPath := 'cef\locales';
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GlobalCEFApp.cache := 'cef\cache';
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GlobalCEFApp.cookies := 'cef\cookies';
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GlobalCEFApp.UserDataPath := 'cef\User Data';
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}
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// Enabling the debug log file for then DOM visitor demo.
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// This adds lots of warnings to the console, specially if you run this inside VirtualBox.
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// Remove it if you don't want to use the DOM visitor
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GlobalCEFApp.LogFile := 'debug.log';
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GlobalCEFApp.LogSeverity := LOGSEVERITY_ERROR;
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// Examples of command line switches.
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// **********************************
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//
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// Uncomment the following line to see an FPS counter in the browser.
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//GlobalCEFApp.AddCustomCommandLine('--show-fps-counter');
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//
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// Uncomment the following line to change the user agent string.
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//GlobalCEFApp.AddCustomCommandLine('--user-agent', 'MiniBrowser');
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if GlobalCEFApp.StartMainProcess then
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begin
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// You can register the Scheme Handler Factory here or later, for example in a context menu command.
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CefRegisterSchemeHandlerFactory('hello', '', THelloScheme);
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Application.Initialize;
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{$IFDEF DELPHI11_UP}
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Application.MainFormOnTaskbar := True;
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{$ENDIF}
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Application.CreateForm(TMiniBrowserFrm, MiniBrowserFrm);
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Application.CreateForm(TPreferencesFrm, PreferencesFrm);
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Application.Run;
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end;
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GlobalCEFApp.Free;
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end.
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