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mirror of https://github.com/salvadordf/CEF4Delphi.git synced 2024-12-04 09:26:52 +02:00
CEF4Delphi/source/uCEFDisplayHandler.pas
Salvador Díaz Fau c455886d29 Fixes in string handling and CEF types
- Modified Cefv8Accessor and Cefv8Interceptor helper function declarations.
- Fixed and renamed ICefV8Interceptor parameters.
- Fixed and renamed ICefV8Accessor parameters.
- Modified ICefValue.SetBool parameter.
- Fixed ICefMenuModelDelegate.FormatLabel "label" parameter.
- Modified CefStringClearAndGet parameter.
- Added CefStringInitialize function.
- Fixed string handling in TCefRequestContextRef.SetPreference.
- Fixed string handling in TCefCustomResourceBundleHandler.GetLocalizedString.
- Fixed string handling in TCefResourceHandlerOwn.GetResponseHeaders.
- Fixed string handling in TCefResourceRequestHandlerOwn.OnResourceRedirect.
- Fixed string handling in TCefStringMapOwn.
- Fixed string handling in TCefStringMultimapOwn.
- Fixed and renamed ICefv8Handler.Execute parameters.
- Adapted JSWindowBindingWithObject demo to new Cefv8Accessor declaration.
2019-11-24 18:19:49 +01:00

413 lines
16 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 © 2019 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 uCEFDisplayHandler;
{$IFDEF FPC}
{$MODE OBJFPC}{$H+}
{$ENDIF}
{$IFNDEF CPUX64}{$ALIGN ON}{$ENDIF}
{$MINENUMSIZE 4}
{$I cef.inc}
interface
uses
{$IFDEF DELPHI16_UP}
System.Classes,
{$ELSE}
Classes,
{$ENDIF}
uCEFBaseRefCounted, uCEFInterfaces, uCEFTypes;
type
TCefDisplayHandlerOwn = class(TCefBaseRefCountedOwn, ICefDisplayHandler)
protected
procedure OnAddressChange(const browser: ICefBrowser; const frame: ICefFrame; const url: ustring); virtual;
procedure OnTitleChange(const browser: ICefBrowser; const title: ustring); virtual;
procedure OnFaviconUrlChange(const browser: ICefBrowser; const iconUrls: TStrings); virtual;
procedure OnFullScreenModeChange(const browser: ICefBrowser; fullscreen: Boolean); virtual;
function OnTooltip(const browser: ICefBrowser; var text: ustring): Boolean; virtual;
procedure OnStatusMessage(const browser: ICefBrowser; const value: ustring); virtual;
function OnConsoleMessage(const browser: ICefBrowser; level: TCefLogSeverity; const message_, source: ustring; line: Integer): Boolean; virtual;
function OnAutoResize(const browser: ICefBrowser; const new_size: PCefSize): Boolean; virtual;
procedure OnLoadingProgressChange(const browser: ICefBrowser; const progress: double); virtual;
procedure RemoveReferences; virtual;
public
constructor Create; virtual;
end;
TCustomDisplayHandler = class(TCefDisplayHandlerOwn)
protected
FEvents : Pointer;
procedure OnAddressChange(const browser: ICefBrowser; const frame: ICefFrame; const url: ustring); override;
procedure OnTitleChange(const browser: ICefBrowser; const title: ustring); override;
procedure OnFaviconUrlChange(const browser: ICefBrowser; const iconUrls: TStrings); override;
procedure OnFullScreenModeChange(const browser: ICefBrowser; fullscreen: Boolean); override;
function OnTooltip(const browser: ICefBrowser; var text: ustring): Boolean; override;
procedure OnStatusMessage(const browser: ICefBrowser; const value: ustring); override;
function OnConsoleMessage(const browser: ICefBrowser; level: TCefLogSeverity; const message_, source: ustring; line: Integer): Boolean; override;
function OnAutoResize(const browser: ICefBrowser; const new_size: PCefSize): Boolean; override;
procedure OnLoadingProgressChange(const browser: ICefBrowser; const progress: double); override;
procedure RemoveReferences; override;
public
constructor Create(const events : IChromiumEvents); reintroduce; virtual;
destructor Destroy; override;
end;
implementation
uses
{$IFDEF DELPHI16_UP}
System.SysUtils,
{$ELSE}
SysUtils,
{$ENDIF}
uCEFMiscFunctions, uCEFLibFunctions, uCEFBrowser, uCEFFrame, uCEFStringList;
procedure cef_display_handler_on_address_change( self : PCefDisplayHandler;
browser : PCefBrowser;
frame : PCefFrame;
const url : PCefString); stdcall;
var
TempObject : TObject;
begin
TempObject := CefGetObject(self);
if (TempObject <> nil) and (TempObject is TCefDisplayHandlerOwn) then
TCefDisplayHandlerOwn(TempObject).OnAddressChange(TCefBrowserRef.UnWrap(browser),
TCefFrameRef.UnWrap(frame),
CefString(url));
end;
procedure cef_display_handler_on_title_change( self : PCefDisplayHandler;
browser : PCefBrowser;
const title : PCefString); stdcall;
var
TempObject : TObject;
begin
TempObject := CefGetObject(self);
if (TempObject <> nil) and (TempObject is TCefDisplayHandlerOwn) then
TCefDisplayHandlerOwn(TempObject).OnTitleChange(TCefBrowserRef.UnWrap(browser),
CefString(title));
end;
procedure cef_display_handler_on_favicon_urlchange(self : PCefDisplayHandler;
browser : PCefBrowser;
icon_urls : TCefStringList); stdcall;
var
TempSL : TStringList;
TempCefSL : ICefStringList;
TempObject : TObject;
begin
TempSL := nil;
try
try
TempObject := CefGetObject(self);
if (TempObject <> nil) and (TempObject is TCefDisplayHandlerOwn) then
begin
TempSL := TStringList.Create;
TempCefSL := TCefStringListRef.Create(icon_urls);
TempCefSL.CopyToStrings(TempSL);
TCefDisplayHandlerOwn(TempObject).OnFaviconUrlChange(TCefBrowserRef.UnWrap(browser),
TempSL);
end;
except
on e : exception do
if CustomExceptionHandler('cef_display_handler_on_favicon_urlchange', e) then raise;
end;
finally
if (TempSL <> nil) then FreeAndNil(TempSL);
end;
end;
procedure cef_display_handler_on_fullscreen_mode_change(self : PCefDisplayHandler;
browser : PCefBrowser;
fullscreen : Integer); stdcall;
var
TempObject : TObject;
begin
TempObject := CefGetObject(self);
if (TempObject <> nil) and (TempObject is TCefDisplayHandlerOwn) then
TCefDisplayHandlerOwn(TempObject).OnFullScreenModeChange(TCefBrowserRef.UnWrap(browser),
fullscreen <> 0);
end;
function cef_display_handler_on_tooltip(self : PCefDisplayHandler;
browser : PCefBrowser;
text : PCefString): Integer; stdcall;
var
TempText : ustring;
TempObject : TObject;
begin
Result := Ord(False);
TempObject := CefGetObject(self);
if (TempObject <> nil) and (TempObject is TCefDisplayHandlerOwn) then
begin
TempText := CefStringClearAndGet(text);
Result := Ord(TCefDisplayHandlerOwn(TempObject).OnTooltip(TCefBrowserRef.UnWrap(browser),
TempText));
if (text <> nil) then text^ := CefStringAlloc(TempText);
end;
end;
procedure cef_display_handler_on_status_message( self : PCefDisplayHandler;
browser : PCefBrowser;
const value : PCefString); stdcall;
var
TempObject : TObject;
begin
TempObject := CefGetObject(self);
if (TempObject <> nil) and (TempObject is TCefDisplayHandlerOwn) then
TCefDisplayHandlerOwn(TempObject).OnStatusMessage(TCefBrowserRef.UnWrap(browser),
CefString(value));
end;
function cef_display_handler_on_console_message( self : PCefDisplayHandler;
browser : PCefBrowser;
level : TCefLogSeverity;
const message_ : PCefString;
const source : PCefString;
line : Integer): Integer; stdcall;
var
TempObject : TObject;
begin
Result := Ord(False);
TempObject := CefGetObject(self);
if (TempObject <> nil) and (TempObject is TCefDisplayHandlerOwn) then
Result := Ord(TCefDisplayHandlerOwn(TempObject).OnConsoleMessage(TCefBrowserRef.UnWrap(browser),
level,
CefString(message_),
CefString(source),
line));
end;
function cef_display_handler_on_auto_resize( self : PCefDisplayHandler;
browser : PCefBrowser;
const new_size : PCefSize): Integer; stdcall;
var
TempObject : TObject;
begin
Result := Ord(False);
TempObject := CefGetObject(self);
if (TempObject <> nil) and (TempObject is TCefDisplayHandlerOwn) then
Result := Ord(TCefDisplayHandlerOwn(TempObject).OnAutoResize(TCefBrowserRef.UnWrap(browser),
new_size));
end;
procedure cef_display_handler_on_loading_progress_change(self : PCefDisplayHandler;
browser : PCefBrowser;
progress : double); stdcall;
var
TempObject : TObject;
begin
TempObject := CefGetObject(self);
if (TempObject <> nil) and (TempObject is TCefDisplayHandlerOwn) then
TCefDisplayHandlerOwn(TempObject).OnLoadingProgressChange(TCefBrowserRef.UnWrap(browser),
progress);
end;
constructor TCefDisplayHandlerOwn.Create;
begin
inherited CreateData(SizeOf(TCefDisplayHandler));
with PCefDisplayHandler(FData)^ do
begin
on_address_change := {$IFDEF FPC}@{$ENDIF}cef_display_handler_on_address_change;
on_title_change := {$IFDEF FPC}@{$ENDIF}cef_display_handler_on_title_change;
on_favicon_urlchange := {$IFDEF FPC}@{$ENDIF}cef_display_handler_on_favicon_urlchange;
on_fullscreen_mode_change := {$IFDEF FPC}@{$ENDIF}cef_display_handler_on_fullscreen_mode_change;
on_tooltip := {$IFDEF FPC}@{$ENDIF}cef_display_handler_on_tooltip;
on_status_message := {$IFDEF FPC}@{$ENDIF}cef_display_handler_on_status_message;
on_console_message := {$IFDEF FPC}@{$ENDIF}cef_display_handler_on_console_message;
on_auto_resize := {$IFDEF FPC}@{$ENDIF}cef_display_handler_on_auto_resize;
on_loading_progress_change := {$IFDEF FPC}@{$ENDIF}cef_display_handler_on_loading_progress_change;
end;
end;
procedure TCefDisplayHandlerOwn.OnAddressChange(const browser: ICefBrowser; const frame: ICefFrame; const url: ustring);
begin
//
end;
function TCefDisplayHandlerOwn.OnConsoleMessage(const browser: ICefBrowser; level: TCefLogSeverity; const message_, source: ustring; line: Integer): Boolean;
begin
Result := False;
end;
function TCefDisplayHandlerOwn.OnAutoResize(const browser: ICefBrowser; const new_size: PCefSize): Boolean;
begin
Result := False;
end;
procedure TCefDisplayHandlerOwn.OnLoadingProgressChange(const browser: ICefBrowser; const progress: double);
begin
//
end;
procedure TCefDisplayHandlerOwn.OnFaviconUrlChange(const browser: ICefBrowser; const iconUrls: TStrings);
begin
//
end;
procedure TCefDisplayHandlerOwn.OnFullScreenModeChange(const browser: ICefBrowser; fullscreen: Boolean);
begin
//
end;
procedure TCefDisplayHandlerOwn.OnStatusMessage(const browser: ICefBrowser; const value: ustring);
begin
//
end;
procedure TCefDisplayHandlerOwn.OnTitleChange(const browser: ICefBrowser; const title: ustring);
begin
//
end;
function TCefDisplayHandlerOwn.OnTooltip(const browser: ICefBrowser; var text: ustring): Boolean;
begin
Result := False;
end;
procedure TCefDisplayHandlerOwn.RemoveReferences;
begin
//
end;
// TCustomDisplayHandler
constructor TCustomDisplayHandler.Create(const events : IChromiumEvents);
begin
inherited Create;
FEvents := Pointer(events);
end;
destructor TCustomDisplayHandler.Destroy;
begin
RemoveReferences;
inherited Destroy;
end;
procedure TCustomDisplayHandler.RemoveReferences;
begin
FEvents := nil;
end;
procedure TCustomDisplayHandler.OnAddressChange(const browser : ICefBrowser;
const frame : ICefFrame;
const url : ustring);
begin
if (FEvents <> nil) then IChromiumEvents(FEvents).doOnAddressChange(browser, frame, url);
end;
function TCustomDisplayHandler.OnConsoleMessage(const browser : ICefBrowser;
level : TCefLogSeverity;
const message_ : ustring;
const source : ustring;
line : Integer): Boolean;
begin
if (FEvents <> nil) then
Result := IChromiumEvents(FEvents).doOnConsoleMessage(browser, level, message_, source, line)
else
Result := inherited OnConsoleMessage(browser, level, message_, source, line);
end;
function TCustomDisplayHandler.OnAutoResize(const browser: ICefBrowser; const new_size: PCefSize): Boolean;
begin
if (FEvents <> nil) then
Result := IChromiumEvents(FEvents).doOnAutoResize(browser, new_size)
else
Result := inherited OnAutoResize(browser, new_size);
end;
procedure TCustomDisplayHandler.OnLoadingProgressChange(const browser: ICefBrowser; const progress: double);
begin
if (FEvents <> nil) then IChromiumEvents(FEvents).doOnLoadingProgressChange(browser, progress);
end;
procedure TCustomDisplayHandler.OnFaviconUrlChange(const browser: ICefBrowser; const iconUrls: TStrings);
begin
if (FEvents <> nil) then IChromiumEvents(FEvents).doOnFaviconUrlChange(browser, iconUrls);
end;
procedure TCustomDisplayHandler.OnFullScreenModeChange(const browser: ICefBrowser; fullscreen: Boolean);
begin
if (FEvents <> nil) then IChromiumEvents(FEvents).doOnFullScreenModeChange(browser, fullscreen);
end;
procedure TCustomDisplayHandler.OnStatusMessage(const browser: ICefBrowser; const value: ustring);
begin
if (FEvents <> nil) then IChromiumEvents(FEvents).doOnStatusMessage(browser, value);
end;
procedure TCustomDisplayHandler.OnTitleChange(const browser: ICefBrowser; const title: ustring);
begin
if (FEvents <> nil) then IChromiumEvents(FEvents).doOnTitleChange(browser, title);
end;
function TCustomDisplayHandler.OnTooltip(const browser: ICefBrowser; var text: ustring): Boolean;
begin
if (FEvents <> nil) then
Result := IChromiumEvents(FEvents).doOnTooltip(browser, text)
else
Result := inherited OnTooltip(browser, text);
end;
end.