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https://github.com/salvadordf/CEF4Delphi.git
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271 lines
10 KiB
ObjectPascal
271 lines
10 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 © 2023 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 uCEFCommandHandler;
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{$IFDEF FPC}
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{$MODE OBJFPC}{$H+}
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{$ENDIF}
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{$IFNDEF TARGET_64BITS}{$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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TCefCommandHandlerOwn = class(TCefBaseRefCountedOwn, ICefCommandHandler)
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protected
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function OnChromeCommand(const browser: ICefBrowser; command_id: integer; disposition: TCefWindowOpenDisposition): boolean; virtual;
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function OnIsChromeAppMenuItemVisible(const browser: ICefBrowser; command_id: integer): boolean; virtual;
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function OnIsChromeAppMenuItemEnabled(const browser: ICefBrowser; command_id: integer): boolean; virtual;
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function OnIsChromePageActionIconVisible(icon_type: TCefChromePageActionIconType): boolean; virtual;
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function OnIsChromeToolbarButtonVisible(button_type: TCefChromeToolbarButtonType): 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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TCustomCommandHandler = class(TCefCommandHandlerOwn)
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protected
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FEvents : Pointer;
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function OnChromeCommand(const browser: ICefBrowser; command_id: integer; disposition: TCefWindowOpenDisposition): boolean; override;
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function OnIsChromeAppMenuItemVisible(const browser: ICefBrowser; command_id: integer): boolean; override;
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function OnIsChromeAppMenuItemEnabled(const browser: ICefBrowser; command_id: integer): boolean; override;
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function OnIsChromePageActionIconVisible(icon_type: TCefChromePageActionIconType): boolean; override;
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function OnIsChromeToolbarButtonVisible(button_type: TCefChromeToolbarButtonType): boolean; 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;
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function cef_command_handler_on_chrome_command(self : PCefCommandHandler;
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browser : PCefBrowser;
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command_id : integer;
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disposition : TCefWindowOpenDisposition): 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 TCefCommandHandlerOwn) then
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Result := Ord(TCefCommandHandlerOwn(TempObject).OnChromeCommand(TCefBrowserRef.UnWrap(browser),
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command_id,
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disposition));
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end;
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function cef_command_handler_is_chrome_app_menu_item_visible(self : PCefCommandHandler;
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browser : PCefBrowser;
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command_id : integer): 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 TCefCommandHandlerOwn) then
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Result := Ord(TCefCommandHandlerOwn(TempObject).OnIsChromeAppMenuItemVisible(TCefBrowserRef.UnWrap(browser),
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command_id));
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end;
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function cef_command_handler_is_chrome_app_menu_item_enabled(self : PCefCommandHandler;
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browser : PCefBrowser;
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command_id : integer): 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 TCefCommandHandlerOwn) then
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Result := Ord(TCefCommandHandlerOwn(TempObject).OnIsChromeAppMenuItemEnabled(TCefBrowserRef.UnWrap(browser),
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command_id));
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end;
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function cef_command_handler_is_chrome_page_action_icon_visible(self : PCefCommandHandler;
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icon_type : TCefChromePageActionIconType): 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 TCefCommandHandlerOwn) then
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Result := Ord(TCefCommandHandlerOwn(TempObject).OnIsChromePageActionIconVisible(icon_type));
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end;
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function cef_command_handler_is_chrome_toolbar_button_visible(self : PCefCommandHandler;
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button_type : TCefChromeToolbarButtonType): 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 TCefCommandHandlerOwn) then
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Result := Ord(TCefCommandHandlerOwn(TempObject).OnIsChromeToolbarButtonVisible(button_type));
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end;
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constructor TCefCommandHandlerOwn.Create;
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begin
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inherited CreateData(SizeOf(TCefCommandHandler));
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with PCefCommandHandler(FData)^ do
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begin
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on_chrome_command := {$IFDEF FPC}@{$ENDIF}cef_command_handler_on_chrome_command;
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is_chrome_app_menu_item_visible := {$IFDEF FPC}@{$ENDIF}cef_command_handler_is_chrome_app_menu_item_visible;
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is_chrome_app_menu_item_enabled := {$IFDEF FPC}@{$ENDIF}cef_command_handler_is_chrome_app_menu_item_enabled;
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is_chrome_page_action_icon_visible := {$IFDEF FPC}@{$ENDIF}cef_command_handler_is_chrome_page_action_icon_visible;
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is_chrome_toolbar_button_visible := {$IFDEF FPC}@{$ENDIF}cef_command_handler_is_chrome_toolbar_button_visible;
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end;
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end;
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function TCefCommandHandlerOwn.OnChromeCommand(const browser: ICefBrowser; command_id: integer; disposition: TCefWindowOpenDisposition): boolean;
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begin
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Result := False;
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end;
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function TCefCommandHandlerOwn.OnIsChromeAppMenuItemVisible(const browser: ICefBrowser; command_id: integer): boolean;
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begin
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Result := True;
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end;
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function TCefCommandHandlerOwn.OnIsChromeAppMenuItemEnabled(const browser: ICefBrowser; command_id: integer): boolean;
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begin
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Result := True;
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end;
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function TCefCommandHandlerOwn.OnIsChromePageActionIconVisible(icon_type: TCefChromePageActionIconType): boolean;
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begin
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Result := True;
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end;
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function TCefCommandHandlerOwn.OnIsChromeToolbarButtonVisible(button_type: TCefChromeToolbarButtonType): boolean;
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begin
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Result := True;
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end;
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procedure TCefCommandHandlerOwn.RemoveReferences;
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begin
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//
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end;
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// TCustomCommandHandler
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constructor TCustomCommandHandler.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 TCustomCommandHandler.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 TCustomCommandHandler.RemoveReferences;
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begin
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FEvents := nil;
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end;
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function TCustomCommandHandler.OnChromeCommand(const browser: ICefBrowser; command_id: integer; disposition: TCefWindowOpenDisposition): boolean;
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begin
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if (FEvents <> nil) then
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Result := IChromiumEvents(FEvents).doOnChromeCommand(browser, command_id, disposition)
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else
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Result := inherited OnChromeCommand(browser, command_id, disposition);
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end;
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function TCustomCommandHandler.OnIsChromeAppMenuItemVisible(const browser: ICefBrowser; command_id: integer): boolean;
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begin
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if (FEvents <> nil) then
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Result := IChromiumEvents(FEvents).doOnIsChromeAppMenuItemVisible(browser, command_id)
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else
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Result := inherited OnIsChromeAppMenuItemVisible(browser, command_id);
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end;
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function TCustomCommandHandler.OnIsChromeAppMenuItemEnabled(const browser: ICefBrowser; command_id: integer): boolean;
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begin
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if (FEvents <> nil) then
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Result := IChromiumEvents(FEvents).doOnIsChromeAppMenuItemEnabled(browser, command_id)
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else
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Result := inherited OnIsChromeAppMenuItemEnabled(browser, command_id);
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end;
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function TCustomCommandHandler.OnIsChromePageActionIconVisible(icon_type: TCefChromePageActionIconType): boolean;
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begin
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if (FEvents <> nil) then
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Result := IChromiumEvents(FEvents).doOnIsChromePageActionIconVisible(icon_type)
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else
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Result := inherited OnIsChromePageActionIconVisible(icon_type);
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end;
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function TCustomCommandHandler.OnIsChromeToolbarButtonVisible(button_type: TCefChromeToolbarButtonType): boolean;
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begin
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if (FEvents <> nil) then
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Result := IChromiumEvents(FEvents).doOnIsChromeToolbarButtonVisible(button_type)
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else
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Result := inherited OnIsChromeToolbarButtonVisible(button_type);
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end;
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end.
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