CEF4Delphi/source/uCEFDisplayHandler.pas
Salvador Diaz Fau 68769fdda2 Update to CEF 3.2987.1594.g92fba9c
Bug fix for memory leak in TChromium.Internal_SavePreferences
2017-03-16 19:12:31 +01:00

276 lines
8.8 KiB
ObjectPascal

// ************************************************************************
// ***************************** CEF4Delphi *******************************
// ************************************************************************
//
// CEF4Delphi is based on DCEF3 which uses CEF3 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 © 2017 Salvador Díaz 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;
{$IFNDEF CPUX64}
{$ALIGN ON}
{$MINENUMSIZE 4}
{$ENDIF}
{$I cef.inc}
interface
uses
{$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; 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; const message, source: ustring; line: Integer): Boolean; virtual;
public
constructor Create; virtual;
end;
TCustomDisplayHandler = class(TCefDisplayHandlerOwn)
protected
FEvent: IChromiumEvents;
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; 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; const message, source: ustring; line: Integer): Boolean; override;
public
constructor Create(const events: IChromiumEvents); reintroduce; virtual;
end;
implementation
uses
uCEFMiscFunctions, uCEFLibFunctions, uCEFBrowser, uCEFFrame;
procedure cef_display_handler_on_address_change(self: PCefDisplayHandler;
browser: PCefBrowser; frame: PCefFrame; const url: PCefString); stdcall;
begin
with TCefDisplayHandlerOwn(CefGetObject(self)) do
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;
begin
with TCefDisplayHandlerOwn(CefGetObject(self)) do
OnTitleChange(TCefBrowserRef.UnWrap(browser), CefString(title));
end;
procedure cef_display_handler_on_favicon_urlchange(self: PCefDisplayHandler;
browser: PCefBrowser; icon_urls: TCefStringList); stdcall;
var
list: TStringList;
i: Integer;
str: TCefString;
begin
list := TStringList.Create;
try
for i := 0 to cef_string_list_size(icon_urls) - 1 do
begin
FillChar(str, SizeOf(str), 0);
cef_string_list_value(icon_urls, i, @str);
list.Add(CefStringClearAndGet(str));
end;
with TCefDisplayHandlerOwn(CefGetObject(self)) do
OnFaviconUrlChange(TCefBrowserRef.UnWrap(browser), list);
finally
list.Free;
end;
end;
procedure cef_display_handler_on_fullscreen_mode_change(self: PCefDisplayHandler;
browser: PCefBrowser; fullscreen: Integer); stdcall;
begin
with TCefDisplayHandlerOwn(CefGetObject(self)) do
OnFullScreenModeChange(TCefBrowserRef.UnWrap(browser), fullscreen <> 0);
end;
function cef_display_handler_on_tooltip(self: PCefDisplayHandler;
browser: PCefBrowser; text: PCefString): Integer; stdcall;
var
t: ustring;
begin
t := CefStringClearAndGet(text^);
with TCefDisplayHandlerOwn(CefGetObject(self)) do
Result := Ord(OnTooltip(
TCefBrowserRef.UnWrap(browser), t));
text^ := CefStringAlloc(t);
end;
procedure cef_display_handler_on_status_message(self: PCefDisplayHandler;
browser: PCefBrowser; const value: PCefString); stdcall;
begin
with TCefDisplayHandlerOwn(CefGetObject(self)) do
OnStatusMessage(TCefBrowserRef.UnWrap(browser), CefString(value));
end;
function cef_display_handler_on_console_message(self: PCefDisplayHandler;
browser: PCefBrowser; const message: PCefString;
const source: PCefString; line: Integer): Integer; stdcall;
begin
with TCefDisplayHandlerOwn(CefGetObject(self)) do
Result := Ord(OnConsoleMessage(TCefBrowserRef.UnWrap(browser),
CefString(message), CefString(source), line));
end;
constructor TCefDisplayHandlerOwn.Create;
begin
inherited CreateData(SizeOf(TCefDisplayHandler));
with PCefDisplayHandler(FData)^ do
begin
on_address_change := cef_display_handler_on_address_change;
on_title_change := cef_display_handler_on_title_change;
on_favicon_urlchange := cef_display_handler_on_favicon_urlchange;
on_fullscreen_mode_change := cef_display_handler_on_fullscreen_mode_change;
on_tooltip := cef_display_handler_on_tooltip;
on_status_message := cef_display_handler_on_status_message;
on_console_message := cef_display_handler_on_console_message;
end;
end;
procedure TCefDisplayHandlerOwn.OnAddressChange(const browser: ICefBrowser;
const frame: ICefFrame; const url: ustring);
begin
end;
function TCefDisplayHandlerOwn.OnConsoleMessage(const browser: ICefBrowser;
const message, source: ustring; line: Integer): Boolean;
begin
Result := False;
end;
procedure TCefDisplayHandlerOwn.OnFaviconUrlChange(const browser: ICefBrowser;
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;
// TCustomDisplayHandler
constructor TCustomDisplayHandler.Create(const events: IChromiumEvents);
begin
inherited Create;
FEvent := events;
end;
procedure TCustomDisplayHandler.OnAddressChange(const browser: ICefBrowser;
const frame: ICefFrame; const url: ustring);
begin
FEvent.doOnAddressChange(browser, frame, url);
end;
function TCustomDisplayHandler.OnConsoleMessage(const browser: ICefBrowser;
const message, source: ustring; line: Integer): Boolean;
begin
Result := FEvent.doOnConsoleMessage(browser, message, source, line);
end;
procedure TCustomDisplayHandler.OnFaviconUrlChange(const browser: ICefBrowser;
iconUrls: TStrings);
begin
FEvent.doOnFaviconUrlChange(browser, iconUrls);
end;
procedure TCustomDisplayHandler.OnFullScreenModeChange(
const browser: ICefBrowser; fullscreen: Boolean);
begin
FEvent.doOnFullScreenModeChange(browser, fullscreen);
end;
procedure TCustomDisplayHandler.OnStatusMessage(const browser: ICefBrowser;
const value: ustring);
begin
FEvent.doOnStatusMessage(browser, value);
end;
procedure TCustomDisplayHandler.OnTitleChange(const browser: ICefBrowser;
const title: ustring);
begin
FEvent.doOnTitleChange(browser, title);
end;
function TCustomDisplayHandler.OnTooltip(const browser: ICefBrowser;
var text: ustring): Boolean;
begin
Result := FEvent.doOnTooltip(browser, text);
end;
end.