mirror of
https://github.com/salvadordf/CEF4Delphi.git
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203 lines
5.9 KiB
ObjectPascal
203 lines
5.9 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 © 2021 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 uCEFFocusHandler;
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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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TCefFocusHandlerOwn = class(TCefBaseRefCountedOwn, ICefFocusHandler)
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protected
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procedure OnTakeFocus(const browser: ICefBrowser; next: Boolean); virtual;
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function OnSetFocus(const browser: ICefBrowser; source: TCefFocusSource): Boolean; virtual;
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procedure OnGotFocus(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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TCustomFocusHandler = class(TCefFocusHandlerOwn)
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protected
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FEvents : Pointer;
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procedure OnTakeFocus(const browser: ICefBrowser; next: Boolean); override;
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function OnSetFocus(const browser: ICefBrowser; source: TCefFocusSource): Boolean; override;
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procedure OnGotFocus(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;
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procedure cef_focus_handler_on_take_focus(self : PCefFocusHandler;
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browser : PCefBrowser;
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next : Integer); 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 TCefFocusHandlerOwn) then
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TCefFocusHandlerOwn(TempObject).OnTakeFocus(TCefBrowserRef.UnWrap(browser),
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next <> 0);
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end;
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function cef_focus_handler_on_set_focus(self : PCefFocusHandler;
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browser : PCefBrowser;
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source : TCefFocusSource): 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 TCefFocusHandlerOwn) then
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Result := Ord(TCefFocusHandlerOwn(TempObject).OnSetFocus(TCefBrowserRef.UnWrap(browser),
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source))
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end;
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procedure cef_focus_handler_on_got_focus(self : PCefFocusHandler;
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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 TCefFocusHandlerOwn) then
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TCefFocusHandlerOwn(TempObject).OnGotFocus(TCefBrowserRef.UnWrap(browser));
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end;
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constructor TCefFocusHandlerOwn.Create;
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begin
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inherited CreateData(SizeOf(TCefFocusHandler));
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with PCefFocusHandler(FData)^ do
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begin
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on_take_focus := {$IFDEF FPC}@{$ENDIF}cef_focus_handler_on_take_focus;
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on_set_focus := {$IFDEF FPC}@{$ENDIF}cef_focus_handler_on_set_focus;
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on_got_focus := {$IFDEF FPC}@{$ENDIF}cef_focus_handler_on_got_focus;
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end;
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end;
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function TCefFocusHandlerOwn.OnSetFocus(const browser: ICefBrowser; source: TCefFocusSource): Boolean;
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begin
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Result := False;
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end;
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procedure TCefFocusHandlerOwn.OnGotFocus(const browser: ICefBrowser);
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begin
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//
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end;
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procedure TCefFocusHandlerOwn.OnTakeFocus(const browser: ICefBrowser; next: Boolean);
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begin
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//
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end;
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procedure TCefFocusHandlerOwn.RemoveReferences;
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begin
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//
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end;
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// TCustomFocusHandler
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constructor TCustomFocusHandler.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 TCustomFocusHandler.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 TCustomFocusHandler.RemoveReferences;
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begin
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FEvents := nil;
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end;
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procedure TCustomFocusHandler.OnGotFocus(const browser: ICefBrowser);
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begin
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if (FEvents <> nil) then IChromiumEvents(FEvents).doOnGotFocus(browser);
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end;
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function TCustomFocusHandler.OnSetFocus(const browser: ICefBrowser; source: TCefFocusSource): Boolean;
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begin
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if (FEvents <> nil) then
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Result := IChromiumEvents(FEvents).doOnSetFocus(browser, source)
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else
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Result := inherited OnSetFocus(browser, source);
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end;
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procedure TCustomFocusHandler.OnTakeFocus(const browser: ICefBrowser; next: Boolean);
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begin
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if (FEvents <> nil) then IChromiumEvents(FEvents).doOnTakeFocus(browser, next);
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end;
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end.
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