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mirror of https://github.com/salvadordf/CEF4Delphi.git synced 2024-12-04 09:26:52 +02:00
CEF4Delphi/source/uCEFTextfieldDelegate.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

315 lines
10 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 uCEFTextfieldDelegate;
{$IFDEF FPC}
{$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
TCefTextfieldDelegateRef = class(TCefViewDelegateRef, ICefTextfieldDelegate)
protected
procedure OnKeyEvent(const textfield: ICefTextfield; const event: TCefKeyEvent; var aResult : boolean);
procedure OnAfterUserAction(const textfield: ICefTextfield);
public
class function UnWrap(data: Pointer): ICefTextfieldDelegate;
end;
TCefTextfieldDelegateOwn = class(TCefViewDelegateOwn, ICefTextfieldDelegate)
protected
procedure OnKeyEvent(const textfield: ICefTextfield; const event: TCefKeyEvent; var aResult : boolean); virtual;
procedure OnAfterUserAction(const textfield: ICefTextfield); virtual;
procedure InitializeCEFMethods; override;
public
constructor Create; override;
end;
TCustomTextfieldDelegate = class(TCefTextfieldDelegateOwn)
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;
// ICefTextfieldDelegate
procedure OnKeyEvent(const textfield: ICefTextfield; const event: TCefKeyEvent; var aResult : boolean); override;
procedure OnAfterUserAction(const textfield: ICefTextfield); override;
public
constructor Create(const events: ICefTextfieldDelegateEvents); reintroduce;
end;
implementation
uses
uCEFLibFunctions, uCEFMiscFunctions, uCEFTextfield;
// **************************************************************
// ***************** TCefTextfieldDelegateRef *******************
// **************************************************************
procedure TCefTextfieldDelegateRef.OnKeyEvent(const textfield : ICefTextfield;
const event : TCefKeyEvent;
var aResult : boolean);
begin
aResult := (PCefTextfieldDelegate(FData)^.on_key_event(PCefTextfieldDelegate(FData),
CefGetData(textfield),
@event) <> 0);
end;
procedure TCefTextfieldDelegateRef.OnAfterUserAction(const textfield: ICefTextfield);
begin
PCefTextfieldDelegate(FData)^.on_after_user_action(PCefTextfieldDelegate(FData),
CefGetData(textfield));
end;
class function TCefTextfieldDelegateRef.UnWrap(data: Pointer): ICefTextfieldDelegate;
begin
if (data <> nil) then
Result := Create(data) as ICefTextfieldDelegate
else
Result := nil;
end;
// **************************************************************
// ***************** TCefTextfieldDelegateOwn *******************
// **************************************************************
function cef_textfield_delegate_on_key_event(self: PCefTextfieldDelegate; textfield: PCefTextfield; const event: PCefKeyEvent): Integer; stdcall;
var
TempObject : TObject;
TempResult : boolean;
begin
TempObject := CefGetObject(self);
TempResult := False;
if (TempObject <> nil) and (TempObject is TCefTextfieldDelegateOwn) then
TCefTextfieldDelegateOwn(TempObject).OnKeyEvent(TCefTextfieldRef.UnWrap(textfield), event^, TempResult);
Result := ord(TempResult);
end;
procedure cef_textfield_delegate_on_accelerator(self: PCefTextfieldDelegate; textfield: PCefTextfield); stdcall;
var
TempObject : TObject;
begin
TempObject := CefGetObject(self);
if (TempObject <> nil) and (TempObject is TCefTextfieldDelegateOwn) then
TCefTextfieldDelegateOwn(TempObject).OnAfterUserAction(TCefTextfieldRef.UnWrap(textfield));
end;
constructor TCefTextfieldDelegateOwn.Create;
begin
inherited CreateData(SizeOf(TCefTextfieldDelegate));
InitializeCEFMethods;
end;
procedure TCefTextfieldDelegateOwn.InitializeCEFMethods;
begin
inherited InitializeCEFMethods;
with PCefTextfieldDelegate(FData)^ do
begin
on_after_user_action := {$IFDEF FPC}@{$ENDIF}cef_textfield_delegate_on_accelerator;
on_key_event := {$IFDEF FPC}@{$ENDIF}cef_textfield_delegate_on_key_event;
end;
end;
procedure TCefTextfieldDelegateOwn.OnKeyEvent(const textfield: ICefTextfield; const event: TCefKeyEvent; var aResult : boolean);
begin
//
end;
procedure TCefTextfieldDelegateOwn.OnAfterUserAction(const textfield: ICefTextfield);
begin
//
end;
// **************************************************************
// ***************** TCustomTextfieldDelegate *******************
// **************************************************************
constructor TCustomTextfieldDelegate.Create(const events: ICefTextfieldDelegateEvents);
begin
inherited Create;
FEvents := Pointer(events);
end;
procedure TCustomTextfieldDelegate.OnGetPreferredSize(const view: ICefView; var aResult : TCefSize);
begin
try
if (FEvents <> nil) then
ICefTextfieldDelegateEvents(FEvents).doOnGetPreferredSize(view, aResult);
except
on e : exception do
if CustomExceptionHandler('TCustomTextfieldDelegate.OnGetPreferredSize', e) then raise;
end;
end;
procedure TCustomTextfieldDelegate.OnGetMinimumSize(const view: ICefView; var aResult : TCefSize);
begin
try
if (FEvents <> nil) then
ICefTextfieldDelegateEvents(FEvents).doOnGetMinimumSize(view, aResult);
except
on e : exception do
if CustomExceptionHandler('TCustomTextfieldDelegate.OnGetMinimumSize', e) then raise;
end;
end;
procedure TCustomTextfieldDelegate.OnGetMaximumSize(const view: ICefView; var aResult : TCefSize);
begin
try
if (FEvents <> nil) then
ICefTextfieldDelegateEvents(FEvents).doOnGetMaximumSize(view, aResult);
except
on e : exception do
if CustomExceptionHandler('TCustomTextfieldDelegate.OnGetMaximumSize', e) then raise;
end;
end;
procedure TCustomTextfieldDelegate.OnGetHeightForWidth(const view: ICefView; width: Integer; var aResult: Integer);
begin
try
if (FEvents <> nil) then
ICefTextfieldDelegateEvents(FEvents).doOnGetHeightForWidth(view, width, aResult);
except
on e : exception do
if CustomExceptionHandler('TCustomTextfieldDelegate.OnGetHeightForWidth', e) then raise;
end;
end;
procedure TCustomTextfieldDelegate.OnParentViewChanged(const view: ICefView; added: boolean; const parent: ICefView);
begin
try
if (FEvents <> nil) then
ICefTextfieldDelegateEvents(FEvents).doOnParentViewChanged(view, added, parent);
except
on e : exception do
if CustomExceptionHandler('TCustomTextfieldDelegate.OnParentViewChanged', e) then raise;
end;
end;
procedure TCustomTextfieldDelegate.OnChildViewChanged(const view: ICefView; added: boolean; const child: ICefView);
begin
try
if (FEvents <> nil) then
ICefTextfieldDelegateEvents(FEvents).doOnChildViewChanged(view, added, child);
except
on e : exception do
if CustomExceptionHandler('TCustomTextfieldDelegate.OnChildViewChanged', e) then raise;
end;
end;
procedure TCustomTextfieldDelegate.OnFocus(const view: ICefView);
begin
try
if (FEvents <> nil) then
ICefTextfieldDelegateEvents(FEvents).doOnFocus(view);
except
on e : exception do
if CustomExceptionHandler('TCustomTextfieldDelegate.OnFocus', e) then raise;
end;
end;
procedure TCustomTextfieldDelegate.OnBlur(const view: ICefView);
begin
try
if (FEvents <> nil) then
ICefTextfieldDelegateEvents(FEvents).doOnBlur(view);
except
on e : exception do
if CustomExceptionHandler('TCustomTextfieldDelegate.OnBlur', e) then raise;
end;
end;
procedure TCustomTextfieldDelegate.OnKeyEvent(const textfield: ICefTextfield; const event: TCefKeyEvent; var aResult : boolean);
begin
try
if (FEvents <> nil) then
ICefTextfieldDelegateEvents(FEvents).doOnKeyEvent(textfield, event, aResult);
except
on e : exception do
if CustomExceptionHandler('TCustomTextfieldDelegate.OnKeyEvent', e) then raise;
end;
end;
procedure TCustomTextfieldDelegate.OnAfterUserAction(const textfield: ICefTextfield);
begin
try
if (FEvents <> nil) then
ICefTextfieldDelegateEvents(FEvents).doOnAfterUserAction(textfield);
except
on e : exception do
if CustomExceptionHandler('TCustomTextfieldDelegate.OnAfterUserAction', e) then raise;
end;
end;
end.