mirror of
https://github.com/salvadordf/CEF4Delphi.git
synced 2024-11-16 00:05:55 +01:00
339 lines
11 KiB
ObjectPascal
339 lines
11 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 © 2023 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 uCEFTextfieldDelegate;
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{$IFDEF FPC}
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{$MODE OBJFPC}{$H+}
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{$ENDIF}
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{$I cef.inc}
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{$IFNDEF TARGET_64BITS}{$ALIGN ON}{$ENDIF}
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{$MINENUMSIZE 4}
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interface
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uses
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{$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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TCefTextfieldDelegateRef = class(TCefViewDelegateRef, ICefTextfieldDelegate)
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protected
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procedure OnKeyEvent(const textfield: ICefTextfield; const event: TCefKeyEvent; var aResult : boolean);
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procedure OnAfterUserAction(const textfield: ICefTextfield);
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public
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class function UnWrap(data: Pointer): ICefTextfieldDelegate;
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end;
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TCefTextfieldDelegateOwn = class(TCefViewDelegateOwn, ICefTextfieldDelegate)
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protected
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procedure OnKeyEvent(const textfield: ICefTextfield; const event: TCefKeyEvent; var aResult : boolean); virtual;
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procedure OnAfterUserAction(const textfield: ICefTextfield); 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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TCustomTextfieldDelegate = class(TCefTextfieldDelegateOwn)
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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 OnLayoutChanged(const view: ICefView; new_bounds: TCefRect); 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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// ICefTextfieldDelegate
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procedure OnKeyEvent(const textfield: ICefTextfield; const event: TCefKeyEvent; var aResult : boolean); override;
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procedure OnAfterUserAction(const textfield: ICefTextfield); override;
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public
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constructor Create(const events: ICefTextfieldDelegateEvents); reintroduce;
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end;
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implementation
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uses
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uCEFLibFunctions, uCEFMiscFunctions, uCEFTextfield;
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// **************************************************************
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// ***************** TCefTextfieldDelegateRef *******************
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// **************************************************************
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procedure TCefTextfieldDelegateRef.OnKeyEvent(const textfield : ICefTextfield;
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const event : TCefKeyEvent;
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var aResult : boolean);
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begin
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aResult := (PCefTextfieldDelegate(FData)^.on_key_event(PCefTextfieldDelegate(FData),
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CefGetData(textfield),
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@event) <> 0);
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end;
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procedure TCefTextfieldDelegateRef.OnAfterUserAction(const textfield: ICefTextfield);
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begin
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PCefTextfieldDelegate(FData)^.on_after_user_action(PCefTextfieldDelegate(FData),
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CefGetData(textfield));
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end;
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class function TCefTextfieldDelegateRef.UnWrap(data: Pointer): ICefTextfieldDelegate;
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begin
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if (data <> nil) then
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Result := Create(data) as ICefTextfieldDelegate
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else
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Result := nil;
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end;
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// **************************************************************
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// ***************** TCefTextfieldDelegateOwn *******************
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// **************************************************************
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function cef_textfield_delegate_on_key_event(self: PCefTextfieldDelegate; textfield: PCefTextfield; const event: PCefKeyEvent): Integer; stdcall;
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var
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TempObject : TObject;
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TempResult : boolean;
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begin
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TempObject := CefGetObject(self);
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TempResult := False;
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if (TempObject <> nil) and (TempObject is TCefTextfieldDelegateOwn) then
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TCefTextfieldDelegateOwn(TempObject).OnKeyEvent(TCefTextfieldRef.UnWrap(textfield), event^, TempResult);
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Result := ord(TempResult);
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end;
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procedure cef_textfield_delegate_on_accelerator(self: PCefTextfieldDelegate; textfield: PCefTextfield); 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 TCefTextfieldDelegateOwn) then
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TCefTextfieldDelegateOwn(TempObject).OnAfterUserAction(TCefTextfieldRef.UnWrap(textfield));
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end;
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constructor TCefTextfieldDelegateOwn.Create;
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begin
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inherited CreateData(SizeOf(TCefTextfieldDelegate));
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InitializeCEFMethods;
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end;
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procedure TCefTextfieldDelegateOwn.InitializeCEFMethods;
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begin
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inherited InitializeCEFMethods;
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with PCefTextfieldDelegate(FData)^ do
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begin
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on_after_user_action := {$IFDEF FPC}@{$ENDIF}cef_textfield_delegate_on_accelerator;
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on_key_event := {$IFDEF FPC}@{$ENDIF}cef_textfield_delegate_on_key_event;
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end;
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end;
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procedure TCefTextfieldDelegateOwn.OnKeyEvent(const textfield: ICefTextfield; const event: TCefKeyEvent; var aResult : boolean);
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begin
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//
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end;
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procedure TCefTextfieldDelegateOwn.OnAfterUserAction(const textfield: ICefTextfield);
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begin
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//
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end;
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// **************************************************************
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// ***************** TCustomTextfieldDelegate *******************
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// **************************************************************
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constructor TCustomTextfieldDelegate.Create(const events: ICefTextfieldDelegateEvents);
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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 TCustomTextfieldDelegate.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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ICefTextfieldDelegateEvents(FEvents).doOnGetPreferredSize(view, aResult);
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except
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on e : exception do
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if CustomExceptionHandler('TCustomTextfieldDelegate.OnGetPreferredSize', e) then raise;
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end;
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end;
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procedure TCustomTextfieldDelegate.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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ICefTextfieldDelegateEvents(FEvents).doOnGetMinimumSize(view, aResult);
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except
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on e : exception do
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if CustomExceptionHandler('TCustomTextfieldDelegate.OnGetMinimumSize', e) then raise;
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end;
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end;
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procedure TCustomTextfieldDelegate.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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ICefTextfieldDelegateEvents(FEvents).doOnGetMaximumSize(view, aResult);
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except
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on e : exception do
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if CustomExceptionHandler('TCustomTextfieldDelegate.OnGetMaximumSize', e) then raise;
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end;
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end;
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procedure TCustomTextfieldDelegate.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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ICefTextfieldDelegateEvents(FEvents).doOnGetHeightForWidth(view, width, aResult);
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except
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on e : exception do
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if CustomExceptionHandler('TCustomTextfieldDelegate.OnGetHeightForWidth', e) then raise;
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end;
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end;
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procedure TCustomTextfieldDelegate.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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ICefTextfieldDelegateEvents(FEvents).doOnParentViewChanged(view, added, parent);
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except
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on e : exception do
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if CustomExceptionHandler('TCustomTextfieldDelegate.OnParentViewChanged', e) then raise;
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end;
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end;
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procedure TCustomTextfieldDelegate.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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ICefTextfieldDelegateEvents(FEvents).doOnChildViewChanged(view, added, child);
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except
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on e : exception do
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if CustomExceptionHandler('TCustomTextfieldDelegate.OnChildViewChanged', e) then raise;
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end;
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end;
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procedure TCustomTextfieldDelegate.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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ICefTextfieldDelegateEvents(FEvents).doOnWindowChanged(view, added);
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except
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on e : exception do
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if CustomExceptionHandler('TCustomTextfieldDelegate.OnWindowChanged', e) then raise;
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end;
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end;
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procedure TCustomTextfieldDelegate.OnLayoutChanged(const view: ICefView; new_bounds: TCefRect);
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begin
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try
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if (FEvents <> nil) then
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ICefTextfieldDelegateEvents(FEvents).doOnLayoutChanged(view, new_bounds);
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except
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on e : exception do
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if CustomExceptionHandler('TCustomTextfieldDelegate.OnLayoutChanged', e) then raise;
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end;
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end;
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procedure TCustomTextfieldDelegate.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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ICefTextfieldDelegateEvents(FEvents).doOnFocus(view);
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except
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on e : exception do
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if CustomExceptionHandler('TCustomTextfieldDelegate.OnFocus', e) then raise;
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end;
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end;
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procedure TCustomTextfieldDelegate.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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ICefTextfieldDelegateEvents(FEvents).doOnBlur(view);
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except
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on e : exception do
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if CustomExceptionHandler('TCustomTextfieldDelegate.OnBlur', e) then raise;
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end;
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end;
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procedure TCustomTextfieldDelegate.OnKeyEvent(const textfield: ICefTextfield; const event: TCefKeyEvent; var aResult : boolean);
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begin
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try
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if (FEvents <> nil) then
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ICefTextfieldDelegateEvents(FEvents).doOnKeyEvent(textfield, event, aResult);
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except
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on e : exception do
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if CustomExceptionHandler('TCustomTextfieldDelegate.OnKeyEvent', e) then raise;
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end;
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end;
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procedure TCustomTextfieldDelegate.OnAfterUserAction(const textfield: ICefTextfield);
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begin
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try
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if (FEvents <> nil) then
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ICefTextfieldDelegateEvents(FEvents).doOnAfterUserAction(textfield);
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except
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on e : exception do
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if CustomExceptionHandler('TCustomTextfieldDelegate.OnAfterUserAction', e) then raise;
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end;
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end;
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end.
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