2017-01-27 17:37:51 +02:00
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// ************************************************************************
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// ***************************** CEF4Delphi *******************************
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// ************************************************************************
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//
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2019-10-19 10:58:34 +02:00
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// CEF4Delphi is based on DCEF3 which uses CEF to embed a chromium-based
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2017-01-27 17:37:51 +02:00
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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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2020-01-01 13:48:10 +02:00
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// Copyright � 2020 Salvador Diaz Fau. All rights reserved.
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2017-01-27 17:37:51 +02:00
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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 uCEFKeyboardHandler;
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2018-05-12 14:50:54 +02:00
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{$IFDEF FPC}
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{$MODE OBJFPC}{$H+}
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{$ENDIF}
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2018-11-22 16:02:21 +02:00
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{$IFNDEF CPUX64}{$ALIGN ON}{$ENDIF}
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{$MINENUMSIZE 4}
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2017-01-27 17:37:51 +02:00
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2017-02-05 21:56:46 +02:00
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{$I cef.inc}
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2017-01-27 17:37:51 +02:00
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interface
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uses
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2017-03-16 20:09:42 +02:00
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uCEFBaseRefCounted, uCEFInterfaces, uCEFTypes;
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2017-01-27 17:37:51 +02:00
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type
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2017-03-16 20:09:42 +02:00
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TCefKeyboardHandlerOwn = class(TCefBaseRefCountedOwn, ICefKeyboardHandler)
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2017-01-27 17:37:51 +02:00
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protected
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function OnPreKeyEvent(const browser: ICefBrowser; const event: PCefKeyEvent; osEvent: TCefEventHandle; out isKeyboardShortcut: Boolean): Boolean; virtual;
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function OnKeyEvent(const browser: ICefBrowser; const event: PCefKeyEvent; osEvent: TCefEventHandle): Boolean; virtual;
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2018-02-03 18:52:48 +02:00
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procedure RemoveReferences; virtual;
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2017-01-27 17:37:51 +02:00
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public
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constructor Create; virtual;
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end;
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TCustomKeyboardHandler = class(TCefKeyboardHandlerOwn)
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protected
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2018-02-03 18:52:48 +02:00
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FEvents : Pointer;
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function OnPreKeyEvent(const browser: ICefBrowser; const event: PCefKeyEvent; osEvent: TCefEventHandle; out isKeyboardShortcut: Boolean): Boolean; override;
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function OnKeyEvent(const browser: ICefBrowser; const event: PCefKeyEvent; osEvent: TCefEventHandle): Boolean; override;
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2018-02-03 18:52:48 +02:00
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procedure RemoveReferences; override;
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2017-01-27 17:37:51 +02:00
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public
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2019-06-19 16:53:26 +02:00
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constructor Create(const events : IChromiumEvents); reintroduce; virtual;
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2017-06-11 17:48:20 +02:00
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destructor Destroy; override;
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2017-01-27 17:37:51 +02:00
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end;
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implementation
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uses
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2018-02-03 18:52:48 +02:00
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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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2017-01-27 17:37:51 +02:00
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uCEFMiscFunctions, uCEFLibFunctions, uCEFBrowser;
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2018-03-29 20:02:04 +02:00
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function cef_keyboard_handler_on_pre_key_event( self : PCefKeyboardHandler;
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browser : PCefBrowser;
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const event : PCefKeyEvent;
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os_event : TCefEventHandle;
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is_keyboard_shortcut : PInteger): Integer; stdcall;
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var
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TempShortcut : Boolean;
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TempObject : TObject;
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begin
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Result := Ord(False);
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TempShortcut := is_keyboard_shortcut^ <> 0;
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TempObject := CefGetObject(self);
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if (TempObject <> nil) and (TempObject is TCefKeyboardHandlerOwn) then
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Result := Ord(TCefKeyboardHandlerOwn(TempObject).OnPreKeyEvent(TCefBrowserRef.UnWrap(browser),
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event,
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os_event,
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TempShortcut));
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is_keyboard_shortcut^ := Ord(TempShortcut);
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end;
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2018-03-29 20:02:04 +02:00
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function cef_keyboard_handler_on_key_event( self : PCefKeyboardHandler;
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browser : PCefBrowser;
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const event : PCefKeyEvent;
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os_event : TCefEventHandle): Integer; stdcall;
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var
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TempObject : TObject;
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begin
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2018-03-29 20:02:04 +02:00
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Result := Ord(False);
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TempObject := CefGetObject(self);
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if (TempObject <> nil) and (TempObject is TCefKeyboardHandlerOwn) then
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Result := Ord(TCefKeyboardHandlerOwn(TempObject).OnKeyEvent(TCefBrowserRef.UnWrap(browser),
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event,
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os_event));
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end;
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constructor TCefKeyboardHandlerOwn.Create;
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begin
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inherited CreateData(SizeOf(TCefKeyboardHandler));
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with PCefKeyboardHandler(FData)^ do
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begin
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on_pre_key_event := {$IFDEF FPC}@{$ENDIF}cef_keyboard_handler_on_pre_key_event;
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on_key_event := {$IFDEF FPC}@{$ENDIF}cef_keyboard_handler_on_key_event;
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end;
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end;
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function TCefKeyboardHandlerOwn.OnPreKeyEvent(const browser: ICefBrowser; const event: PCefKeyEvent; osEvent: TCefEventHandle; out isKeyboardShortcut: Boolean): Boolean;
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begin
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Result := False;
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end;
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function TCefKeyboardHandlerOwn.OnKeyEvent(const browser: ICefBrowser; const event: PCefKeyEvent; osEvent: TCefEventHandle): Boolean;
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begin
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Result := False;
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end;
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2018-02-03 18:52:48 +02:00
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procedure TCefKeyboardHandlerOwn.RemoveReferences;
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begin
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//
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end;
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2017-01-27 17:37:51 +02:00
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// TCustomKeyboardHandler
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2019-06-19 16:53:26 +02:00
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constructor TCustomKeyboardHandler.Create(const events : IChromiumEvents);
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begin
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inherited Create;
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2017-06-11 17:48:20 +02:00
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2019-06-19 16:53:26 +02:00
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FEvents := Pointer(events);
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end;
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2017-06-11 17:48:20 +02:00
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destructor TCustomKeyboardHandler.Destroy;
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begin
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2018-02-03 18:52:48 +02:00
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RemoveReferences;
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2017-06-11 17:48:20 +02:00
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inherited Destroy;
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end;
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2018-02-03 18:52:48 +02:00
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procedure TCustomKeyboardHandler.RemoveReferences;
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begin
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FEvents := nil;
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end;
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2017-06-11 20:36:14 +02:00
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function TCustomKeyboardHandler.OnKeyEvent(const browser : ICefBrowser;
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const event : PCefKeyEvent;
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osEvent : TCefEventHandle): Boolean;
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begin
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2018-02-03 18:52:48 +02:00
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if (FEvents <> nil) then
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Result := IChromiumEvents(FEvents).doOnKeyEvent(browser, event, osEvent)
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else
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Result := inherited OnKeyEvent(browser, event, osEvent);
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end;
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2017-06-11 20:36:14 +02:00
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function TCustomKeyboardHandler.OnPreKeyEvent(const browser : ICefBrowser;
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const event : PCefKeyEvent;
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osEvent : TCefEventHandle;
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out isKeyboardShortcut : Boolean): Boolean;
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2017-01-27 17:37:51 +02:00
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begin
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2018-02-03 18:52:48 +02:00
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if (FEvents <> nil) then
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Result := IChromiumEvents(FEvents).doOnPreKeyEvent(browser, event, osEvent, isKeyboardShortcut)
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2017-06-11 17:48:20 +02:00
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else
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2017-06-11 20:36:14 +02:00
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Result := inherited OnPreKeyEvent(browser, event, osEvent, isKeyboardShortcut);
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2017-01-27 17:37:51 +02:00
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end;
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end.
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