mirror of
https://github.com/salvadordf/CEF4Delphi.git
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269 lines
11 KiB
ObjectPascal
269 lines
11 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 uCEFJsDialogHandler;
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{$IFDEF FPC}
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{$MODE OBJFPC}{$H+}
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{$ENDIF}
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{$IFNDEF CPUX64}{$ALIGN ON}{$ENDIF}
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{$MINENUMSIZE 4}
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{$I cef.inc}
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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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TCefJsDialogHandlerOwn = class(TCefBaseRefCountedOwn, ICefJsDialogHandler)
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protected
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function OnJsdialog(const browser: ICefBrowser; const originUrl: ustring; dialogType: TCefJsDialogType; const messageText, defaultPromptText: ustring; const callback: ICefJsDialogCallback; out suppressMessage: Boolean): Boolean; virtual;
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function OnBeforeUnloadDialog(const browser: ICefBrowser; const messageText: ustring; isReload: Boolean; const callback: ICefJsDialogCallback): Boolean; virtual;
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procedure OnResetDialogState(const browser: ICefBrowser); virtual;
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procedure OnDialogClosed(const browser: ICefBrowser); 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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TCustomJsDialogHandler = class(TCefJsDialogHandlerOwn)
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protected
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FEvents : Pointer;
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function OnJsdialog(const browser: ICefBrowser; const originUrl: ustring; dialogType: TCefJsDialogType; const messageText, defaultPromptText: ustring; const callback: ICefJsDialogCallback; out suppressMessage: Boolean): Boolean; override;
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function OnBeforeUnloadDialog(const browser: ICefBrowser; const messageText: ustring; isReload: Boolean; const callback: ICefJsDialogCallback): Boolean; override;
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procedure OnResetDialogState(const browser: ICefBrowser); override;
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procedure OnDialogClosed(const browser: ICefBrowser); override;
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procedure RemoveReferences; override;
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public
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constructor Create(const events : IChromiumEvents); reintroduce; virtual;
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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, uCEFBrowser, uCEFJsDialogCallback;
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function cef_jsdialog_handler_on_jsdialog( self : PCefJsDialogHandler;
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browser : PCefBrowser;
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const origin_url : PCefString;
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dialog_type : TCefJsDialogType;
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const message_text : PCefString;
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const default_prompt_text : PCefString;
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callback : PCefJsDialogCallback;
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suppress_message : PInteger): Integer; stdcall;
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var
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TempSuppress : Boolean;
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TempObject : TObject;
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begin
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Result := Ord(False);
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TempSuppress := suppress_message^ <> 0;
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TempObject := CefGetObject(self);
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if (TempObject <> nil) and (TempObject is TCefJsDialogHandlerOwn) then
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Result := Ord(TCefJsDialogHandlerOwn(TempObject).OnJsdialog(TCefBrowserRef.UnWrap(browser),
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CefString(origin_url),
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dialog_type,
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CefString(message_text),
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CefString(default_prompt_text),
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TCefJsDialogCallbackRef.UnWrap(callback),
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TempSuppress));
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suppress_message^ := Ord(TempSuppress);
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end;
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function cef_jsdialog_handler_on_before_unload_dialog( self : PCefJsDialogHandler;
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browser : PCefBrowser;
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const message_text : PCefString;
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is_reload : Integer;
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callback : PCefJsDialogCallback): 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 TCefJsDialogHandlerOwn) then
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Result := Ord(TCefJsDialogHandlerOwn(TempObject).OnBeforeUnloadDialog(TCefBrowserRef.UnWrap(browser),
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CefString(message_text),
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is_reload <> 0,
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TCefJsDialogCallbackRef.UnWrap(callback)));
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end;
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procedure cef_jsdialog_handler_on_reset_dialog_state(self : PCefJsDialogHandler;
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browser : PCefBrowser); 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 TCefJsDialogHandlerOwn) then
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TCefJsDialogHandlerOwn(TempObject).OnResetDialogState(TCefBrowserRef.UnWrap(browser));
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end;
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procedure cef_jsdialog_handler_on_dialog_closed(self : PCefJsDialogHandler;
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browser : PCefBrowser); 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 TCefJsDialogHandlerOwn) then
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TCefJsDialogHandlerOwn(TempObject).OnDialogClosed(TCefBrowserRef.UnWrap(browser));
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end;
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constructor TCefJsDialogHandlerOwn.Create;
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begin
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inherited CreateData(SizeOf(TCefJsDialogHandler));
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with PCefJsDialogHandler(FData)^ do
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begin
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on_jsdialog := {$IFDEF FPC}@{$ENDIF}cef_jsdialog_handler_on_jsdialog;
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on_before_unload_dialog := {$IFDEF FPC}@{$ENDIF}cef_jsdialog_handler_on_before_unload_dialog;
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on_reset_dialog_state := {$IFDEF FPC}@{$ENDIF}cef_jsdialog_handler_on_reset_dialog_state;
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on_dialog_closed := {$IFDEF FPC}@{$ENDIF}cef_jsdialog_handler_on_dialog_closed;
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end;
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end;
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function TCefJsDialogHandlerOwn.OnJsdialog(const browser : ICefBrowser;
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const originUrl : ustring;
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dialogType : TCefJsDialogType;
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const messageText : ustring;
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const defaultPromptText : ustring;
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const callback : ICefJsDialogCallback;
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out suppressMessage : Boolean): Boolean;
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begin
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Result := False;
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suppressMessage := False;
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end;
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function TCefJsDialogHandlerOwn.OnBeforeUnloadDialog(const browser : ICefBrowser;
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const messageText : ustring;
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isReload : Boolean;
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const callback : ICefJsDialogCallback): Boolean;
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begin
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Result := False;
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end;
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procedure TCefJsDialogHandlerOwn.OnDialogClosed(const browser: ICefBrowser);
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begin
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//
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end;
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procedure TCefJsDialogHandlerOwn.OnResetDialogState(const browser: ICefBrowser);
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begin
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//
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end;
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procedure TCefJsDialogHandlerOwn.RemoveReferences;
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begin
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//
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end;
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// TCustomJsDialogHandler
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constructor TCustomJsDialogHandler.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 TCustomJsDialogHandler.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 TCustomJsDialogHandler.RemoveReferences;
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begin
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FEvents := nil;
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end;
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function TCustomJsDialogHandler.OnBeforeUnloadDialog(const browser : ICefBrowser;
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const messageText : ustring;
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isReload : Boolean;
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const callback : ICefJsDialogCallback): Boolean;
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begin
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if (FEvents <> nil) then
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Result := IChromiumEvents(FEvents).doOnBeforeUnloadDialog(browser, messageText, isReload, callback)
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else
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Result := inherited OnBeforeUnloadDialog(browser, messageText, isReload, callback);
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end;
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procedure TCustomJsDialogHandler.OnDialogClosed(const browser: ICefBrowser);
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begin
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if (FEvents <> nil) then IChromiumEvents(FEvents).doOnDialogClosed(browser);
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end;
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function TCustomJsDialogHandler.OnJsdialog(const browser : ICefBrowser;
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const originUrl : ustring;
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dialogType : TCefJsDialogType;
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const messageText : ustring;
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const defaultPromptText : ustring;
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const callback : ICefJsDialogCallback;
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out suppressMessage : Boolean): Boolean;
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begin
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suppressMessage := False;
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if (FEvents <> nil) then
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Result := IChromiumEvents(FEvents).doOnJsdialog(browser, originUrl, dialogType, messageText, defaultPromptText, callback, suppressMessage)
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else
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Result := inherited OnJsdialog(browser, originUrl, dialogType, messageText, defaultPromptText, callback, suppressMessage);
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end;
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procedure TCustomJsDialogHandler.OnResetDialogState(const browser: ICefBrowser);
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begin
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if (FEvents <> nil) then IChromiumEvents(FEvents).doOnResetDialogState(browser);
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end;
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end.
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