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Added Views Framework support #244
Added ToolBoxBrowser2 demo Added TCEFBrowserViewComponent. Added TCEFLabelButtonComponent. Added TCEFMenuButtonComponent. Added TCEFPanelComponent. Added TCEFTextfieldComponent. Added TCEFScrollViewComponent. Added TCEFWindowComponent.
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Salvador Díaz Fau
261
source/uCEFBrowserViewComponent.pas
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261
source/uCEFBrowserViewComponent.pas
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// ************************************************************************
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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 � 2020 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 uCEFBrowserViewComponent;
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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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{$IFDEF MSWINDOWS}WinApi.Windows,{$ENDIF} System.Classes,
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{$ELSE}
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{$IFDEF MSWINDOWS}Windows,{$ENDIF} Classes,
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{$IFDEF FPC}
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LCLProc, LCLType, LCLIntf, LResources, InterfaceBase,
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{$ENDIF}
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{$ENDIF}
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uCEFTypes, uCEFInterfaces, uCEFViewsFrameworkEvents, uCEFViewComponent;
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type
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{$IFNDEF FPC}{$IFDEF DELPHI16_UP}[ComponentPlatformsAttribute(pidWin32 or pidWin64)]{$ENDIF}{$ENDIF}
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TCEFBrowserViewComponent = class(TCEFViewComponent, ICefBrowserViewDelegateEvents)
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protected
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FBrowserView : ICefBrowserView;
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FBrowserViewDlg : ICefBrowserViewDelegate;
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// ICefBrowserViewDelegateEvents
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FOnBrowserCreated : TOnBrowserCreatedEvent;
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FOnBrowserDestroyed : TOnBrowserDestroyedEvent;
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FOnGetDelegateForPopupBrowserView : TOnGetDelegateForPopupBrowserViewEvent;
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FOnPopupBrowserViewCreated : TOnPopupBrowserViewCreatedEvent;
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procedure DestroyView; override;
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procedure Initialize; override;
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function GetInitialized : boolean; override;
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function GetAsView : ICefView; override;
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function GetAsBrowserView : ICefBrowserView; override;
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function GetBrowser : ICefBrowser;
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// ICefBrowserViewDelegateEvents
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procedure doOnBrowserCreated(const browser_view: ICefBrowserView; const browser: ICefBrowser);
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procedure doOnBrowserDestroyed(const browser_view: ICefBrowserView; const browser: ICefBrowser);
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procedure doOnGetDelegateForPopupBrowserView(const browser_view: ICefBrowserView; const settings: TCefBrowserSettings; const client: ICefClient; is_devtools: boolean; var aResult : ICefBrowserViewDelegate);
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procedure doOnPopupBrowserViewCreated(const browser_view, popup_browser_view: ICefBrowserView; is_devtools: boolean; var aResult : boolean);
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public
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function CreateBrowserView(const client: ICefClient; const url: ustring; const settings: TCefBrowserSettings; const extra_info: ICefDictionaryValue; const request_context: ICefRequestContext): boolean;
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function GetForBrowser(const browser: ICefBrowser): boolean;
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procedure SetPreferAccelerators(prefer_accelerators: boolean);
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property Browser : ICefBrowser read GetBrowser;
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property BrowserView : ICefBrowserView read FBrowserView;
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published
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property OnBrowserCreated : TOnBrowserCreatedEvent read FOnBrowserCreated write FOnBrowserCreated;
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property OnBrowserDestroyed : TOnBrowserDestroyedEvent read FOnBrowserDestroyed write FOnBrowserDestroyed;
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property OnGetDelegateForPopupBrowserView : TOnGetDelegateForPopupBrowserViewEvent read FOnGetDelegateForPopupBrowserView write FOnGetDelegateForPopupBrowserView;
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property OnPopupBrowserViewCreated : TOnPopupBrowserViewCreatedEvent read FOnPopupBrowserViewCreated write FOnPopupBrowserViewCreated;
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end;
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{$IFDEF FPC}
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procedure Register;
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{$ENDIF}
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// *********************************************************
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// ********************** ATTENTION ! **********************
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// *********************************************************
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// ** **
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// ** MANY OF THE EVENTS IN CEF4DELPHI COMPONENTS LIKE **
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// ** TCHROMIUM, TFMXCHROMIUM OR TCEFAPPLICATION ARE **
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// ** EXECUTED IN A CEF THREAD BY DEFAULT. **
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// ** **
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// ** WINDOWS CONTROLS MUST BE CREATED AND DESTROYED IN **
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// ** THE SAME THREAD TO AVOID ERRORS. **
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// ** SOME OF THEM RECREATE THE HANDLERS IF THEY ARE **
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// ** MODIFIED AND CAN CAUSE THE SAME ERRORS. **
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// ** **
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// ** DON'T CREATE, MODIFY OR DESTROY WINDOWS CONTROLS **
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// ** INSIDE THE CEF4DELPHI EVENTS AND USE **
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// ** SYNCHRONIZATION OBJECTS TO PROTECT VARIABLES AND **
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// ** FIELDS IF THEY ARE ALSO USED IN THE MAIN THREAD. **
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// ** **
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// ** READ THIS FOR MORE INFORMATION : **
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// ** https://www.briskbard.com/index.php?pageid=cef **
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// ** **
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// ** USE OUR FORUMS FOR MORE QUESTIONS : **
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// ** https://www.briskbard.com/forum/ **
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// ** **
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// *********************************************************
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// *********************************************************
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implementation
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uses
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uCEFBrowserView, uCEFBrowserViewDelegate, uCEFMiscFunctions;
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procedure TCEFBrowserViewComponent.Initialize;
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begin
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inherited Initialize;
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FBrowserView := nil;
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FBrowserViewDlg := nil;
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FOnBrowserCreated := nil;
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FOnBrowserDestroyed := nil;
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FOnGetDelegateForPopupBrowserView := nil;
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FOnPopupBrowserViewCreated := nil;
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end;
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procedure TCEFBrowserViewComponent.DestroyView;
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begin
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if (FBrowserViewDlg <> nil) then
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begin
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FBrowserViewDlg.DestroyOtherRefs;
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FBrowserViewDlg := nil;
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end;
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FBrowserView := nil;
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end;
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function TCEFBrowserViewComponent.CreateBrowserView(const client : ICefClient;
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const url : ustring;
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const settings : TCefBrowserSettings;
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const extra_info : ICefDictionaryValue;
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const request_context : ICefRequestContext): boolean;
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begin
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Result := False;
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if CefCurrentlyOn(TID_UI) and (client <> nil) then
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begin
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if (FBrowserViewDlg = nil) then
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FBrowserViewDlg := TCustomBrowserViewDelegate.Create(self);
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FBrowserView := TCefBrowserViewRef.CreateBrowserView(client, url, settings, extra_info, request_context, FBrowserViewDlg);
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Result := (FBrowserView <> nil);
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end;
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end;
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function TCEFBrowserViewComponent.GetForBrowser(const browser: ICefBrowser): boolean;
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begin
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Result := False;
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if CefCurrentlyOn(TID_UI) and (browser <> nil) then
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begin
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FBrowserView := TCefBrowserViewRef.GetForBrowser(browser);
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Result := (FBrowserView <> nil);
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end;
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end;
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function TCEFBrowserViewComponent.GetInitialized : boolean;
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begin
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Result := (FBrowserView <> nil);
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end;
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function TCEFBrowserViewComponent.GetAsView : ICefView;
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begin
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Result := FBrowserView as ICefView;
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end;
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function TCEFBrowserViewComponent.GetAsBrowserView : ICefBrowserView;
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begin
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Result := FBrowserView;
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end;
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function TCEFBrowserViewComponent.GetBrowser : ICefBrowser;
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begin
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if Initialized then
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Result := FBrowserView.GetBrowser
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else
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Result := nil;
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end;
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procedure TCEFBrowserViewComponent.SetPreferAccelerators(prefer_accelerators: boolean);
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begin
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if Initialized then FBrowserView.SetPreferAccelerators(prefer_accelerators);
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end;
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procedure TCEFBrowserViewComponent.doOnBrowserCreated(const browser_view : ICefBrowserView;
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const browser : ICefBrowser);
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begin
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if assigned(FOnBrowserCreated) then
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FOnBrowserCreated(self, browser_view, browser);
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end;
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procedure TCEFBrowserViewComponent.doOnBrowserDestroyed(const browser_view : ICefBrowserView;
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const browser : ICefBrowser);
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begin
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if assigned(FOnBrowserDestroyed) then
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FOnBrowserDestroyed(self, browser_view, browser);
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end;
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procedure TCEFBrowserViewComponent.doOnGetDelegateForPopupBrowserView(const browser_view : ICefBrowserView;
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const settings : TCefBrowserSettings;
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const client : ICefClient;
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is_devtools : boolean;
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var aResult : ICefBrowserViewDelegate);
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begin
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if assigned(FOnGetDelegateForPopupBrowserView) then
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FOnGetDelegateForPopupBrowserView(self, browser_view, settings, client, is_devtools, aResult);
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end;
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procedure TCEFBrowserViewComponent.doOnPopupBrowserViewCreated(const browser_view : ICefBrowserView;
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const popup_browser_view : ICefBrowserView;
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is_devtools : boolean;
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var aResult : boolean);
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begin
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if assigned(FOnPopupBrowserViewCreated) then
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FOnPopupBrowserViewCreated(self, browser_view, popup_browser_view, is_devtools, aResult);
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end;
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{$IFDEF FPC}
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procedure Register;
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begin
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{$I res/tcefbrowserviewcomponent.lrs}
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RegisterComponents('Chromium Views Framework', [TCEFBrowserViewComponent]);
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end;
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{$ENDIF}
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end.
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