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CEF4Delphi/source/uCEFButtonDelegate.pas
Salvador Díaz Fau 318318c85c Added Views Framework support #244
Added ToolBoxBrowser2 demo
Added TCEFBrowserViewComponent.
Added TCEFLabelButtonComponent.
Added TCEFMenuButtonComponent.
Added TCEFPanelComponent.
Added TCEFTextfieldComponent.
Added TCEFScrollViewComponent.
Added TCEFWindowComponent.
2020-05-05 18:10:33 +02:00

307 lines
9.7 KiB
ObjectPascal

// ************************************************************************
// ***************************** CEF4Delphi *******************************
// ************************************************************************
//
// CEF4Delphi is based on DCEF3 which uses CEF to embed a chromium-based
// browser in Delphi applications.
//
// The original license of DCEF3 still applies to CEF4Delphi.
//
// For more information about CEF4Delphi visit :
// https://www.briskbard.com/index.php?lang=en&pageid=cef
//
// Copyright © 2020 Salvador Diaz Fau. All rights reserved.
//
// ************************************************************************
// ************ vvvv Original license and comments below vvvv *************
// ************************************************************************
(*
* Delphi Chromium Embedded 3
*
* Usage allowed under the restrictions of the Lesser GNU General Public License
* or alternatively the restrictions of the Mozilla Public License 1.1
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for
* the specific language governing rights and limitations under the License.
*
* Unit owner : Henri Gourvest <hgourvest@gmail.com>
* Web site : http://www.progdigy.com
* Repository : http://code.google.com/p/delphichromiumembedded/
* Group : http://groups.google.com/group/delphichromiumembedded
*
* Embarcadero Technologies, Inc is not permitted to use or redistribute
* this source code without explicit permission.
*
*)
unit uCEFButtonDelegate;
{$IFDEF FPC}
{$MODE OBJFPC}{$H+}
{$ENDIF}
{$IFNDEF CPUX64}{$ALIGN ON}{$ENDIF}
{$MINENUMSIZE 4}
{$I cef.inc}
interface
uses
{$IFDEF DELPHI16_UP}
System.Classes, System.SysUtils,
{$ELSE}
Classes, SysUtils,
{$ENDIF}
uCEFBaseRefCounted, uCEFInterfaces, uCEFTypes, uCEFViewDelegate;
type
TCefButtonDelegateRef = class(TCefViewDelegateRef, ICefButtonDelegate)
protected
procedure OnButtonPressed(const button: ICefButton);
procedure OnButtonStateChanged(const button: ICefButton);
public
class function UnWrap(data: Pointer): ICefButtonDelegate;
end;
TCefButtonDelegateOwn = class(TCefViewDelegateOwn, ICefButtonDelegate)
protected
procedure OnButtonPressed(const button: ICefButton); virtual;
procedure OnButtonStateChanged(const button: ICefButton); virtual;
procedure InitializeCEFMethods; override;
public
constructor Create; override;
end;
TCustomButtonDelegate = class(TCefButtonDelegateOwn)
protected
FEvents : Pointer;
// ICefViewDelegate
procedure OnGetPreferredSize(const view: ICefView; var aResult : TCefSize); override;
procedure OnGetMinimumSize(const view: ICefView; var aResult : TCefSize); override;
procedure OnGetMaximumSize(const view: ICefView; var aResult : TCefSize); override;
procedure OnGetHeightForWidth(const view: ICefView; width: Integer; var aResult: Integer); override;
procedure OnParentViewChanged(const view: ICefView; added: boolean; const parent: ICefView); override;
procedure OnChildViewChanged(const view: ICefView; added: boolean; const child: ICefView); override;
procedure OnFocus(const view: ICefView); override;
procedure OnBlur(const view: ICefView); override;
// ICefButtonDelegate
procedure OnButtonPressed(const button: ICefButton); override;
procedure OnButtonStateChanged(const button: ICefButton); override;
public
constructor Create(const events: ICefButtonDelegateEvents); reintroduce;
end;
implementation
uses
uCEFLibFunctions, uCEFMiscFunctions, uCEFButton;
// **************************************************************
// ****************** TCefButtonDelegateRef *********************
// **************************************************************
procedure TCefButtonDelegateRef.OnButtonPressed(const button: ICefButton);
begin
PCefButtonDelegate(FData)^.on_button_pressed(PCefButtonDelegate(FData),
CefGetData(button));
end;
procedure TCefButtonDelegateRef.OnButtonStateChanged(const button: ICefButton);
begin
PCefButtonDelegate(FData)^.on_button_state_changed(PCefButtonDelegate(FData),
CefGetData(button));
end;
class function TCefButtonDelegateRef.UnWrap(data: Pointer): ICefButtonDelegate;
begin
if (data <> nil) then
Result := Create(data) as ICefButtonDelegate
else
Result := nil;
end;
// **************************************************************
// ****************** TCefButtonDelegateOwn *********************
// **************************************************************
procedure cef_button_delegate_on_button_pressed(self: PCefButtonDelegate; button: PCefButton); stdcall;
var
TempObject : TObject;
begin
TempObject := CefGetObject(self);
if (TempObject <> nil) and (TempObject is TCefButtonDelegateOwn) then
TCefButtonDelegateOwn(TempObject).OnButtonPressed(TCefButtonRef.UnWrap(button));
end;
procedure cef_button_delegate_on_button_state_changed(self: PCefButtonDelegate; button: PCefButton); stdcall;
var
TempObject : TObject;
begin
TempObject := CefGetObject(self);
if (TempObject <> nil) and (TempObject is TCefButtonDelegateOwn) then
TCefButtonDelegateOwn(TempObject).OnButtonStateChanged(TCefButtonRef.UnWrap(button));
end;
constructor TCefButtonDelegateOwn.Create;
begin
inherited CreateData(SizeOf(TCefButtonDelegate));
InitializeCEFMethods;
end;
procedure TCefButtonDelegateOwn.InitializeCEFMethods;
begin
inherited InitializeCEFMethods;
with PCefButtonDelegate(FData)^ do
begin
on_button_pressed := {$IFDEF FPC}@{$ENDIF}cef_button_delegate_on_button_pressed;
on_button_state_changed := {$IFDEF FPC}@{$ENDIF}cef_button_delegate_on_button_state_changed;
end;
end;
procedure TCefButtonDelegateOwn.OnButtonPressed(const button: ICefButton);
begin
//
end;
procedure TCefButtonDelegateOwn.OnButtonStateChanged(const button: ICefButton);
begin
//
end;
// **************************************************************
// ****************** TCustomButtonDelegate *********************
// **************************************************************
constructor TCustomButtonDelegate.Create(const events: ICefButtonDelegateEvents);
begin
inherited Create;
FEvents := Pointer(events);
end;
procedure TCustomButtonDelegate.OnGetPreferredSize(const view: ICefView; var aResult : TCefSize);
begin
try
if (FEvents <> nil) then
ICefButtonDelegateEvents(FEvents).doOnGetPreferredSize(view, aResult);
except
on e : exception do
if CustomExceptionHandler('TCustomButtonDelegate.OnGetPreferredSize', e) then raise;
end;
end;
procedure TCustomButtonDelegate.OnGetMinimumSize(const view: ICefView; var aResult : TCefSize);
begin
try
if (FEvents <> nil) then
ICefButtonDelegateEvents(FEvents).doOnGetMinimumSize(view, aResult);
except
on e : exception do
if CustomExceptionHandler('TCustomButtonDelegate.OnGetMinimumSize', e) then raise;
end;
end;
procedure TCustomButtonDelegate.OnGetMaximumSize(const view: ICefView; var aResult : TCefSize);
begin
try
if (FEvents <> nil) then
ICefButtonDelegateEvents(FEvents).doOnGetMaximumSize(view, aResult);
except
on e : exception do
if CustomExceptionHandler('TCustomButtonDelegate.OnGetMaximumSize', e) then raise;
end;
end;
procedure TCustomButtonDelegate.OnGetHeightForWidth(const view: ICefView; width: Integer; var aResult: Integer);
begin
try
if (FEvents <> nil) then
ICefButtonDelegateEvents(FEvents).doOnGetHeightForWidth(view, width, aResult);
except
on e : exception do
if CustomExceptionHandler('TCustomButtonDelegate.OnGetHeightForWidth', e) then raise;
end;
end;
procedure TCustomButtonDelegate.OnParentViewChanged(const view: ICefView; added: boolean; const parent: ICefView);
begin
try
if (FEvents <> nil) then
ICefButtonDelegateEvents(FEvents).doOnParentViewChanged(view, added, parent);
except
on e : exception do
if CustomExceptionHandler('TCustomButtonDelegate.OnParentViewChanged', e) then raise;
end;
end;
procedure TCustomButtonDelegate.OnChildViewChanged(const view: ICefView; added: boolean; const child: ICefView);
begin
try
if (FEvents <> nil) then
ICefButtonDelegateEvents(FEvents).doOnChildViewChanged(view, added, child);
except
on e : exception do
if CustomExceptionHandler('TCustomButtonDelegate.OnChildViewChanged', e) then raise;
end;
end;
procedure TCustomButtonDelegate.OnFocus(const view: ICefView);
begin
try
if (FEvents <> nil) then
ICefButtonDelegateEvents(FEvents).doOnFocus(view);
except
on e : exception do
if CustomExceptionHandler('TCustomButtonDelegate.OnFocus', e) then raise;
end;
end;
procedure TCustomButtonDelegate.OnBlur(const view: ICefView);
begin
try
if (FEvents <> nil) then
ICefButtonDelegateEvents(FEvents).doOnBlur(view);
except
on e : exception do
if CustomExceptionHandler('TCustomButtonDelegate.OnBlur', e) then raise;
end;
end;
procedure TCustomButtonDelegate.OnButtonPressed(const button: ICefButton);
begin
try
if (FEvents <> nil) then
ICefButtonDelegateEvents(FEvents).doOnButtonPressed(button);
except
on e : exception do
if CustomExceptionHandler('TCustomButtonDelegate.OnButtonPressed', e) then raise;
end;
end;
procedure TCustomButtonDelegate.OnButtonStateChanged(const button: ICefButton);
begin
try
if (FEvents <> nil) then
ICefButtonDelegateEvents(FEvents).doOnButtonStateChanged(button);
except
on e : exception do
if CustomExceptionHandler('TCustomButtonDelegate.OnButtonStateChanged', e) then raise;
end;
end;
end.