mirror of
https://github.com/salvadordf/CEF4Delphi.git
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319 lines
10 KiB
ObjectPascal
319 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 © 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 uCEFButtonDelegate;
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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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{$I cef.inc}
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interface
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uses
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{$IFDEF DELPHI16_UP}
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System.Classes, System.SysUtils,
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{$ELSE}
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Classes, SysUtils,
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{$ENDIF}
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uCEFBaseRefCounted, uCEFInterfaces, uCEFTypes, uCEFViewDelegate;
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type
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TCefButtonDelegateRef = class(TCefViewDelegateRef, ICefButtonDelegate)
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protected
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procedure OnButtonPressed(const button: ICefButton);
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procedure OnButtonStateChanged(const button: ICefButton);
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public
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class function UnWrap(data: Pointer): ICefButtonDelegate;
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end;
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TCefButtonDelegateOwn = class(TCefViewDelegateOwn, ICefButtonDelegate)
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protected
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procedure OnButtonPressed(const button: ICefButton); virtual;
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procedure OnButtonStateChanged(const button: ICefButton); virtual;
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procedure InitializeCEFMethods; override;
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public
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constructor Create; override;
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end;
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TCustomButtonDelegate = class(TCefButtonDelegateOwn)
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protected
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FEvents : Pointer;
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// ICefViewDelegate
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procedure OnGetPreferredSize(const view: ICefView; var aResult : TCefSize); override;
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procedure OnGetMinimumSize(const view: ICefView; var aResult : TCefSize); override;
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procedure OnGetMaximumSize(const view: ICefView; var aResult : TCefSize); override;
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procedure OnGetHeightForWidth(const view: ICefView; width: Integer; var aResult: Integer); override;
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procedure OnParentViewChanged(const view: ICefView; added: boolean; const parent: ICefView); override;
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procedure OnChildViewChanged(const view: ICefView; added: boolean; const child: ICefView); override;
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procedure OnWindowChanged(const view: ICefView; added: boolean); override;
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procedure OnFocus(const view: ICefView); override;
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procedure OnBlur(const view: ICefView); override;
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// ICefButtonDelegate
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procedure OnButtonPressed(const button: ICefButton); override;
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procedure OnButtonStateChanged(const button: ICefButton); override;
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public
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constructor Create(const events: ICefButtonDelegateEvents); reintroduce;
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end;
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implementation
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uses
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uCEFLibFunctions, uCEFMiscFunctions, uCEFButton;
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// **************************************************************
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// ****************** TCefButtonDelegateRef *********************
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// **************************************************************
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procedure TCefButtonDelegateRef.OnButtonPressed(const button: ICefButton);
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begin
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PCefButtonDelegate(FData)^.on_button_pressed(PCefButtonDelegate(FData),
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CefGetData(button));
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end;
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procedure TCefButtonDelegateRef.OnButtonStateChanged(const button: ICefButton);
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begin
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PCefButtonDelegate(FData)^.on_button_state_changed(PCefButtonDelegate(FData),
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CefGetData(button));
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end;
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class function TCefButtonDelegateRef.UnWrap(data: Pointer): ICefButtonDelegate;
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begin
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if (data <> nil) then
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Result := Create(data) as ICefButtonDelegate
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else
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Result := nil;
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end;
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// **************************************************************
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// ****************** TCefButtonDelegateOwn *********************
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// **************************************************************
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procedure cef_button_delegate_on_button_pressed(self: PCefButtonDelegate; button: PCefButton); 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 TCefButtonDelegateOwn) then
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TCefButtonDelegateOwn(TempObject).OnButtonPressed(TCefButtonRef.UnWrap(button));
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end;
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procedure cef_button_delegate_on_button_state_changed(self: PCefButtonDelegate; button: PCefButton); 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 TCefButtonDelegateOwn) then
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TCefButtonDelegateOwn(TempObject).OnButtonStateChanged(TCefButtonRef.UnWrap(button));
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end;
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constructor TCefButtonDelegateOwn.Create;
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begin
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inherited CreateData(SizeOf(TCefButtonDelegate));
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InitializeCEFMethods;
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end;
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procedure TCefButtonDelegateOwn.InitializeCEFMethods;
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begin
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inherited InitializeCEFMethods;
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with PCefButtonDelegate(FData)^ do
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begin
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on_button_pressed := {$IFDEF FPC}@{$ENDIF}cef_button_delegate_on_button_pressed;
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on_button_state_changed := {$IFDEF FPC}@{$ENDIF}cef_button_delegate_on_button_state_changed;
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end;
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end;
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procedure TCefButtonDelegateOwn.OnButtonPressed(const button: ICefButton);
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begin
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//
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end;
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procedure TCefButtonDelegateOwn.OnButtonStateChanged(const button: ICefButton);
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begin
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//
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end;
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// **************************************************************
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// ****************** TCustomButtonDelegate *********************
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// **************************************************************
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constructor TCustomButtonDelegate.Create(const events: ICefButtonDelegateEvents);
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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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procedure TCustomButtonDelegate.OnGetPreferredSize(const view: ICefView; var aResult : TCefSize);
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begin
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try
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if (FEvents <> nil) then
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ICefButtonDelegateEvents(FEvents).doOnGetPreferredSize(view, aResult);
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except
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on e : exception do
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if CustomExceptionHandler('TCustomButtonDelegate.OnGetPreferredSize', e) then raise;
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end;
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end;
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procedure TCustomButtonDelegate.OnGetMinimumSize(const view: ICefView; var aResult : TCefSize);
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begin
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try
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if (FEvents <> nil) then
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ICefButtonDelegateEvents(FEvents).doOnGetMinimumSize(view, aResult);
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except
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on e : exception do
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if CustomExceptionHandler('TCustomButtonDelegate.OnGetMinimumSize', e) then raise;
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end;
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end;
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procedure TCustomButtonDelegate.OnGetMaximumSize(const view: ICefView; var aResult : TCefSize);
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begin
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try
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if (FEvents <> nil) then
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ICefButtonDelegateEvents(FEvents).doOnGetMaximumSize(view, aResult);
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except
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on e : exception do
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if CustomExceptionHandler('TCustomButtonDelegate.OnGetMaximumSize', e) then raise;
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end;
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end;
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procedure TCustomButtonDelegate.OnGetHeightForWidth(const view: ICefView; width: Integer; var aResult: Integer);
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begin
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try
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if (FEvents <> nil) then
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ICefButtonDelegateEvents(FEvents).doOnGetHeightForWidth(view, width, aResult);
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except
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on e : exception do
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if CustomExceptionHandler('TCustomButtonDelegate.OnGetHeightForWidth', e) then raise;
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end;
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end;
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procedure TCustomButtonDelegate.OnParentViewChanged(const view: ICefView; added: boolean; const parent: ICefView);
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begin
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try
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if (FEvents <> nil) then
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ICefButtonDelegateEvents(FEvents).doOnParentViewChanged(view, added, parent);
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except
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on e : exception do
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if CustomExceptionHandler('TCustomButtonDelegate.OnParentViewChanged', e) then raise;
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end;
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end;
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procedure TCustomButtonDelegate.OnChildViewChanged(const view: ICefView; added: boolean; const child: ICefView);
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begin
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try
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if (FEvents <> nil) then
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ICefButtonDelegateEvents(FEvents).doOnChildViewChanged(view, added, child);
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except
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on e : exception do
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if CustomExceptionHandler('TCustomButtonDelegate.OnChildViewChanged', e) then raise;
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end;
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end;
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procedure TCustomButtonDelegate.OnWindowChanged(const view: ICefView; added: boolean);
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begin
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try
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if (FEvents <> nil) then
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ICefButtonDelegateEvents(FEvents).doOnWindowChanged(view, added);
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except
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on e : exception do
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if CustomExceptionHandler('TCustomButtonDelegate.OnWindowChanged', e) then raise;
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end;
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end;
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procedure TCustomButtonDelegate.OnFocus(const view: ICefView);
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begin
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try
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if (FEvents <> nil) then
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ICefButtonDelegateEvents(FEvents).doOnFocus(view);
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except
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on e : exception do
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if CustomExceptionHandler('TCustomButtonDelegate.OnFocus', e) then raise;
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end;
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end;
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procedure TCustomButtonDelegate.OnBlur(const view: ICefView);
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begin
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try
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if (FEvents <> nil) then
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ICefButtonDelegateEvents(FEvents).doOnBlur(view);
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except
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on e : exception do
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if CustomExceptionHandler('TCustomButtonDelegate.OnBlur', e) then raise;
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end;
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end;
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procedure TCustomButtonDelegate.OnButtonPressed(const button: ICefButton);
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begin
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try
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if (FEvents <> nil) then
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ICefButtonDelegateEvents(FEvents).doOnButtonPressed(button);
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except
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on e : exception do
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if CustomExceptionHandler('TCustomButtonDelegate.OnButtonPressed', e) then raise;
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end;
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end;
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procedure TCustomButtonDelegate.OnButtonStateChanged(const button: ICefButton);
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begin
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try
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if (FEvents <> nil) then
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ICefButtonDelegateEvents(FEvents).doOnButtonStateChanged(button);
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except
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on e : exception do
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if CustomExceptionHandler('TCustomButtonDelegate.OnButtonStateChanged', e) then raise;
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end;
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end;
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end.
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