mirror of
https://github.com/salvadordf/CEF4Delphi.git
synced 2024-12-04 09:26:52 +02:00
1fa2f43b0c
- Modified CefPostTask and CefPostDelayedTask to return a boolean value. - Added CefCurrentlyOn helper function. - Replaced all "CEF3" mentions by "CEF".
413 lines
16 KiB
ObjectPascal
413 lines
16 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 © 2019 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 uCEFDisplayHandler;
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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,
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{$ELSE}
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Classes,
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{$ENDIF}
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uCEFBaseRefCounted, uCEFInterfaces, uCEFTypes;
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type
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TCefDisplayHandlerOwn = class(TCefBaseRefCountedOwn, ICefDisplayHandler)
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protected
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procedure OnAddressChange(const browser: ICefBrowser; const frame: ICefFrame; const url: ustring); virtual;
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procedure OnTitleChange(const browser: ICefBrowser; const title: ustring); virtual;
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procedure OnFaviconUrlChange(const browser: ICefBrowser; const iconUrls: TStrings); virtual;
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procedure OnFullScreenModeChange(const browser: ICefBrowser; fullscreen: Boolean); virtual;
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function OnTooltip(const browser: ICefBrowser; var text: ustring): Boolean; virtual;
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procedure OnStatusMessage(const browser: ICefBrowser; const value: ustring); virtual;
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function OnConsoleMessage(const browser: ICefBrowser; level: TCefLogSeverity; const message_, source: ustring; line: Integer): Boolean; virtual;
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function OnAutoResize(const browser: ICefBrowser; const new_size: PCefSize): Boolean; virtual;
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procedure OnLoadingProgressChange(const browser: ICefBrowser; const progress: double); virtual;
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procedure RemoveReferences; virtual;
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public
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constructor Create; virtual;
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end;
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TCustomDisplayHandler = class(TCefDisplayHandlerOwn)
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protected
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FEvents : Pointer;
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procedure OnAddressChange(const browser: ICefBrowser; const frame: ICefFrame; const url: ustring); override;
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procedure OnTitleChange(const browser: ICefBrowser; const title: ustring); override;
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procedure OnFaviconUrlChange(const browser: ICefBrowser; const iconUrls: TStrings); override;
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procedure OnFullScreenModeChange(const browser: ICefBrowser; fullscreen: Boolean); override;
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function OnTooltip(const browser: ICefBrowser; var text: ustring): Boolean; override;
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procedure OnStatusMessage(const browser: ICefBrowser; const value: ustring); override;
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function OnConsoleMessage(const browser: ICefBrowser; level: TCefLogSeverity; const message_, source: ustring; line: Integer): Boolean; override;
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function OnAutoResize(const browser: ICefBrowser; const new_size: PCefSize): Boolean; override;
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procedure OnLoadingProgressChange(const browser: ICefBrowser; const progress: double); override;
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procedure RemoveReferences; override;
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public
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constructor Create(const events : IChromiumEvents); reintroduce; virtual;
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destructor Destroy; override;
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end;
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implementation
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uses
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{$IFDEF DELPHI16_UP}
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System.SysUtils,
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{$ELSE}
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SysUtils,
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{$ENDIF}
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uCEFMiscFunctions, uCEFLibFunctions, uCEFBrowser, uCEFFrame, uCEFStringList;
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procedure cef_display_handler_on_address_change( self : PCefDisplayHandler;
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browser : PCefBrowser;
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frame : PCefFrame;
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const url : PCefString); 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 TCefDisplayHandlerOwn) then
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TCefDisplayHandlerOwn(TempObject).OnAddressChange(TCefBrowserRef.UnWrap(browser),
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TCefFrameRef.UnWrap(frame),
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CefString(url));
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end;
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procedure cef_display_handler_on_title_change( self : PCefDisplayHandler;
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browser : PCefBrowser;
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const title : PCefString); 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 TCefDisplayHandlerOwn) then
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TCefDisplayHandlerOwn(TempObject).OnTitleChange(TCefBrowserRef.UnWrap(browser),
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CefString(title));
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end;
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procedure cef_display_handler_on_favicon_urlchange(self : PCefDisplayHandler;
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browser : PCefBrowser;
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icon_urls : TCefStringList); stdcall;
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var
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TempSL : TStringList;
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TempCefSL : ICefStringList;
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TempObject : TObject;
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begin
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TempSL := nil;
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try
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try
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TempObject := CefGetObject(self);
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if (TempObject <> nil) and (TempObject is TCefDisplayHandlerOwn) then
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begin
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TempSL := TStringList.Create;
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TempCefSL := TCefStringListRef.Create(icon_urls);
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TempCefSL.CopyToStrings(TempSL);
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TCefDisplayHandlerOwn(TempObject).OnFaviconUrlChange(TCefBrowserRef.UnWrap(browser),
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TempSL);
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end;
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except
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on e : exception do
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if CustomExceptionHandler('cef_display_handler_on_favicon_urlchange', e) then raise;
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end;
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finally
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if (TempSL <> nil) then FreeAndNil(TempSL);
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end;
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end;
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procedure cef_display_handler_on_fullscreen_mode_change(self : PCefDisplayHandler;
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browser : PCefBrowser;
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fullscreen : Integer); 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 TCefDisplayHandlerOwn) then
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TCefDisplayHandlerOwn(TempObject).OnFullScreenModeChange(TCefBrowserRef.UnWrap(browser),
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fullscreen <> 0);
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end;
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function cef_display_handler_on_tooltip(self : PCefDisplayHandler;
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browser : PCefBrowser;
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text : PCefString): Integer; stdcall;
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var
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TempText : ustring;
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TempObject : TObject;
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begin
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Result := Ord(False);
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TempObject := CefGetObject(self);
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if (TempObject <> nil) and (TempObject is TCefDisplayHandlerOwn) then
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begin
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TempText := CefStringClearAndGet(text^);
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Result := Ord(TCefDisplayHandlerOwn(TempObject).OnTooltip(TCefBrowserRef.UnWrap(browser),
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TempText));
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text^ := CefStringAlloc(TempText);
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end;
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end;
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procedure cef_display_handler_on_status_message( self : PCefDisplayHandler;
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browser : PCefBrowser;
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const value : PCefString); 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 TCefDisplayHandlerOwn) then
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TCefDisplayHandlerOwn(TempObject).OnStatusMessage(TCefBrowserRef.UnWrap(browser),
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CefString(value));
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end;
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function cef_display_handler_on_console_message( self : PCefDisplayHandler;
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browser : PCefBrowser;
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level : TCefLogSeverity;
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const message_ : PCefString;
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const source : PCefString;
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line : Integer): Integer; stdcall;
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var
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TempObject : TObject;
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begin
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Result := Ord(False);
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TempObject := CefGetObject(self);
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if (TempObject <> nil) and (TempObject is TCefDisplayHandlerOwn) then
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Result := Ord(TCefDisplayHandlerOwn(TempObject).OnConsoleMessage(TCefBrowserRef.UnWrap(browser),
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level,
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CefString(message_),
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CefString(source),
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line));
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end;
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function cef_display_handler_on_auto_resize( self : PCefDisplayHandler;
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browser : PCefBrowser;
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const new_size : PCefSize): Integer; stdcall;
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var
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TempObject : TObject;
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begin
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Result := Ord(False);
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TempObject := CefGetObject(self);
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if (TempObject <> nil) and (TempObject is TCefDisplayHandlerOwn) then
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Result := Ord(TCefDisplayHandlerOwn(TempObject).OnAutoResize(TCefBrowserRef.UnWrap(browser),
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new_size));
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end;
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procedure cef_display_handler_on_loading_progress_change(self : PCefDisplayHandler;
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browser : PCefBrowser;
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progress : double); 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 TCefDisplayHandlerOwn) then
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TCefDisplayHandlerOwn(TempObject).OnLoadingProgressChange(TCefBrowserRef.UnWrap(browser),
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progress);
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end;
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constructor TCefDisplayHandlerOwn.Create;
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begin
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inherited CreateData(SizeOf(TCefDisplayHandler));
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with PCefDisplayHandler(FData)^ do
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begin
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on_address_change := {$IFDEF FPC}@{$ENDIF}cef_display_handler_on_address_change;
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on_title_change := {$IFDEF FPC}@{$ENDIF}cef_display_handler_on_title_change;
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on_favicon_urlchange := {$IFDEF FPC}@{$ENDIF}cef_display_handler_on_favicon_urlchange;
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on_fullscreen_mode_change := {$IFDEF FPC}@{$ENDIF}cef_display_handler_on_fullscreen_mode_change;
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on_tooltip := {$IFDEF FPC}@{$ENDIF}cef_display_handler_on_tooltip;
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on_status_message := {$IFDEF FPC}@{$ENDIF}cef_display_handler_on_status_message;
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on_console_message := {$IFDEF FPC}@{$ENDIF}cef_display_handler_on_console_message;
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on_auto_resize := {$IFDEF FPC}@{$ENDIF}cef_display_handler_on_auto_resize;
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on_loading_progress_change := {$IFDEF FPC}@{$ENDIF}cef_display_handler_on_loading_progress_change;
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end;
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end;
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procedure TCefDisplayHandlerOwn.OnAddressChange(const browser: ICefBrowser; const frame: ICefFrame; const url: ustring);
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begin
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//
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end;
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function TCefDisplayHandlerOwn.OnConsoleMessage(const browser: ICefBrowser; level: TCefLogSeverity; const message_, source: ustring; line: Integer): Boolean;
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begin
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Result := False;
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end;
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function TCefDisplayHandlerOwn.OnAutoResize(const browser: ICefBrowser; const new_size: PCefSize): Boolean;
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begin
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Result := False;
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end;
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procedure TCefDisplayHandlerOwn.OnLoadingProgressChange(const browser: ICefBrowser; const progress: double);
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begin
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//
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end;
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procedure TCefDisplayHandlerOwn.OnFaviconUrlChange(const browser: ICefBrowser; const iconUrls: TStrings);
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begin
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//
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end;
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procedure TCefDisplayHandlerOwn.OnFullScreenModeChange(const browser: ICefBrowser; fullscreen: Boolean);
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begin
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//
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end;
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procedure TCefDisplayHandlerOwn.OnStatusMessage(const browser: ICefBrowser; const value: ustring);
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begin
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//
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end;
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procedure TCefDisplayHandlerOwn.OnTitleChange(const browser: ICefBrowser; const title: ustring);
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begin
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//
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end;
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function TCefDisplayHandlerOwn.OnTooltip(const browser: ICefBrowser; var text: ustring): Boolean;
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begin
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Result := False;
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end;
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procedure TCefDisplayHandlerOwn.RemoveReferences;
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begin
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//
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end;
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// TCustomDisplayHandler
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constructor TCustomDisplayHandler.Create(const events : IChromiumEvents);
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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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destructor TCustomDisplayHandler.Destroy;
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begin
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RemoveReferences;
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inherited Destroy;
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end;
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procedure TCustomDisplayHandler.RemoveReferences;
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begin
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FEvents := nil;
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end;
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procedure TCustomDisplayHandler.OnAddressChange(const browser : ICefBrowser;
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const frame : ICefFrame;
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const url : ustring);
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begin
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if (FEvents <> nil) then IChromiumEvents(FEvents).doOnAddressChange(browser, frame, url);
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end;
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function TCustomDisplayHandler.OnConsoleMessage(const browser : ICefBrowser;
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level : TCefLogSeverity;
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const message_ : ustring;
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const source : ustring;
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line : Integer): Boolean;
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begin
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if (FEvents <> nil) then
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Result := IChromiumEvents(FEvents).doOnConsoleMessage(browser, level, message_, source, line)
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else
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Result := inherited OnConsoleMessage(browser, level, message_, source, line);
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end;
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function TCustomDisplayHandler.OnAutoResize(const browser: ICefBrowser; const new_size: PCefSize): Boolean;
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begin
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if (FEvents <> nil) then
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Result := IChromiumEvents(FEvents).doOnAutoResize(browser, new_size)
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else
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Result := inherited OnAutoResize(browser, new_size);
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end;
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procedure TCustomDisplayHandler.OnLoadingProgressChange(const browser: ICefBrowser; const progress: double);
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begin
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if (FEvents <> nil) then IChromiumEvents(FEvents).doOnLoadingProgressChange(browser, progress);
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end;
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procedure TCustomDisplayHandler.OnFaviconUrlChange(const browser: ICefBrowser; const iconUrls: TStrings);
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begin
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if (FEvents <> nil) then IChromiumEvents(FEvents).doOnFaviconUrlChange(browser, iconUrls);
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end;
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procedure TCustomDisplayHandler.OnFullScreenModeChange(const browser: ICefBrowser; fullscreen: Boolean);
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begin
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if (FEvents <> nil) then IChromiumEvents(FEvents).doOnFullScreenModeChange(browser, fullscreen);
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end;
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procedure TCustomDisplayHandler.OnStatusMessage(const browser: ICefBrowser; const value: ustring);
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begin
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if (FEvents <> nil) then IChromiumEvents(FEvents).doOnStatusMessage(browser, value);
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end;
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procedure TCustomDisplayHandler.OnTitleChange(const browser: ICefBrowser; const title: ustring);
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begin
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if (FEvents <> nil) then IChromiumEvents(FEvents).doOnTitleChange(browser, title);
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end;
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function TCustomDisplayHandler.OnTooltip(const browser: ICefBrowser; var text: ustring): Boolean;
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begin
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if (FEvents <> nil) then
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Result := IChromiumEvents(FEvents).doOnTooltip(browser, text)
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else
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Result := inherited OnTooltip(browser, text);
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end;
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end.
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