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CEF4Delphi/demos/CookieVisitor/uCookieVisitor.pas
Salvador Díaz Fau 769aa4f384 Fixed IME support in OSR mode
- Added lots of conditional compiler directives to build CEF4DElphi in Linux using Lazarus/FPC
- Updated copyright year
2019-01-08 19:15:25 +01:00

371 lines
13 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 © 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 uCookieVisitor;
{$I cef.inc}
interface
uses
{$IFDEF DELPHI16_UP}
Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Vcl.ExtCtrls,
{$ELSE}
Windows, Messages, SysUtils, Variants, Classes, Graphics,
Controls, Forms, Dialogs, StdCtrls, ExtCtrls,
{$ENDIF}
uCEFChromium, uCEFWindowParent, uCEFInterfaces, uCEFApplication, uCEFTypes, uCEFConstants,
uCEFCookieManager, uCEFCookieVisitor, uCEFWinControl;
const
MINIBROWSER_SHOWCOOKIES = WM_APP + $101;
MINIBROWSER_SETCOOKIERSLT = WM_APP + $102;
MINIBROWSER_CONTEXTMENU_DELETECOOKIES = MENU_ID_USER_FIRST + 1;
MINIBROWSER_CONTEXTMENU_GETCOOKIES = MENU_ID_USER_FIRST + 2;
MINIBROWSER_CONTEXTMENU_SETCOOKIE = MENU_ID_USER_FIRST + 3;
type
TCookieVisitorFrm = class(TForm)
AddressBarPnl: TPanel;
Edit1: TEdit;
GoBtn: TButton;
CEFWindowParent1: TCEFWindowParent;
Chromium1: TChromium;
Timer1: TTimer;
procedure Chromium1AfterCreated(Sender: TObject; const browser: ICefBrowser);
procedure FormShow(Sender: TObject);
procedure GoBtnClick(Sender: TObject);
procedure Chromium1BeforeContextMenu(Sender: TObject;
const browser: ICefBrowser; const frame: ICefFrame;
const params: ICefContextMenuParams; const model: ICefMenuModel);
procedure Chromium1ContextMenuCommand(Sender: TObject;
const browser: ICefBrowser; const frame: ICefFrame;
const params: ICefContextMenuParams; commandId: Integer;
eventFlags: Cardinal; out Result: Boolean);
procedure Chromium1CookiesDeleted(Sender: TObject;
numDeleted: Integer);
procedure FormCreate(Sender: TObject);
procedure FormDestroy(Sender: TObject);
procedure Timer1Timer(Sender: TObject);
procedure Chromium1BeforePopup(Sender: TObject;
const browser: ICefBrowser; const frame: ICefFrame; const targetUrl,
targetFrameName: ustring;
targetDisposition: TCefWindowOpenDisposition; userGesture: Boolean;
const popupFeatures: TCefPopupFeatures; var windowInfo: TCefWindowInfo;
var client: ICefClient; var settings: TCefBrowserSettings;
var noJavascriptAccess: Boolean; var Result: Boolean);
procedure FormCloseQuery(Sender: TObject; var CanClose: Boolean);
procedure Chromium1Close(Sender: TObject; const browser: ICefBrowser;
out Result: Boolean);
procedure Chromium1BeforeClose(Sender: TObject;
const browser: ICefBrowser);
private
procedure WMMove(var aMessage : TWMMove); message WM_MOVE;
procedure WMMoving(var aMessage : TMessage); message WM_MOVING;
procedure WMEnterMenuLoop(var aMessage: TMessage); message WM_ENTERMENULOOP;
procedure WMExitMenuLoop(var aMessage: TMessage); message WM_EXITMENULOOP;
procedure BrowserCreatedMsg(var aMessage : TMessage); message CEF_AFTERCREATED;
procedure BrowserDestroyMsg(var aMessage : TMessage); message CEF_DESTROY;
procedure ShowCookiesMsg(var aMessage : TMessage); message MINIBROWSER_SHOWCOOKIES;
procedure SetCookieRsltMsg(var aMessage : TMessage); message MINIBROWSER_SETCOOKIERSLT;
protected
FText : string;
FVisitor : ICefCookieVisitor;
// Variables to control when can we destroy the form safely
FCanClose : boolean; // Set to True in TChromium.OnBeforeClose
FClosing : boolean; // Set to True in the CloseQuery event.
public
procedure AddCookieInfo(const aCookie : TCookie);
end;
var
CookieVisitorFrm: TCookieVisitorFrm;
implementation
{$R *.dfm}
uses
uSimpleTextViewer, uCEFTask, uCEFMiscFunctions;
// This demo has a context menu to test the DeleteCookies function and a CookieVisitor example.
// The cookie visitor gets the global cookie manager to call the VisitAllCookies function.
// The cookie visitor will call CookieVisitorProc for each cookie and it'll save the information using the AddCookieInfo function.
// When the last cookie arrives we show the information in a SimpleTextViewer form.
// Destruction steps
// =================
// 1. FormCloseQuery sets CanClose to FALSE calls TChromium.CloseBrowser which triggers the TChromium.OnClose event.
// 2. TChromium.OnClose sends a CEFBROWSER_DESTROY message to destroy CEFWindowParent1 in the main thread, which triggers the TChromium.OnBeforeClose event.
// 3. TChromium.OnBeforeClose sets FCanClose := True and sends WM_CLOSE to the form.
// This function is called in the IO thread.
function CookieVisitorProc(const name, value, domain, path: ustring;
secure, httponly, hasExpires: Boolean;
const creation, lastAccess, expires: TDateTime;
count, total: Integer;
out deleteCookie: Boolean): Boolean;
var
TempCookie : TCookie;
begin
deleteCookie := False;
TempCookie.name := name;
TempCookie.value := value;
TempCookie.domain := domain;
TempCookie.path := path;
TempCookie.secure := secure;
TempCookie.httponly := httponly;
TempCookie.creation := creation;
TempCookie.last_access := lastAccess;
TempCookie.has_expires := hasExpires;
TempCookie.expires := expires;
CookieVisitorFrm.AddCookieInfo(TempCookie);
if (count = pred(total)) then
begin
if (CookieVisitorFrm <> nil) and CookieVisitorFrm.HandleAllocated then
PostMessage(CookieVisitorFrm.Handle, MINIBROWSER_SHOWCOOKIES, 0, 0);
Result := False;
end
else
Result := True;
end;
procedure TCookieVisitorFrm.AddCookieInfo(const aCookie : TCookie);
begin
// This should be protected by a mutex.
FText := FText + aCookie.name + ' : ' + aCookie.value + #13 + #10;
end;
procedure TCookieVisitorFrm.BrowserCreatedMsg(var aMessage : TMessage);
begin
CEFWindowParent1.UpdateSize;
AddressBarPnl.Enabled := True;
GoBtn.Click;
end;
procedure TCookieVisitorFrm.BrowserDestroyMsg(var aMessage : TMessage);
begin
CEFWindowParent1.Free;
end;
procedure TCookieVisitorFrm.ShowCookiesMsg(var aMessage : TMessage);
begin
SimpleTextViewerFrm.Memo1.Lines.Text := FText; // This should be protected by a mutex.
SimpleTextViewerFrm.ShowModal;
end;
procedure TCookieVisitorFrm.SetCookieRsltMsg(var aMessage : TMessage);
begin
if (aMessage.wParam = 0) then
showmessage('There was a problem setting the cookie')
else
showmessage('Cookie set successfully !');
end;
procedure TCookieVisitorFrm.Timer1Timer(Sender: TObject);
begin
Timer1.Enabled := False;
if not(Chromium1.CreateBrowser(CEFWindowParent1, '')) and not(Chromium1.Initialized) then
Timer1.Enabled := True;
end;
procedure TCookieVisitorFrm.GoBtnClick(Sender: TObject);
begin
Chromium1.LoadURL(Edit1.Text);
end;
procedure TCookieVisitorFrm.Chromium1AfterCreated(Sender: TObject; const browser: ICefBrowser);
begin
PostMessage(Handle, CEF_AFTERCREATED, 0, 0);
end;
procedure TCookieVisitorFrm.Chromium1BeforeClose(Sender: TObject; const browser: ICefBrowser);
begin
FCanClose := True;
PostMessage(Handle, WM_CLOSE, 0, 0);
end;
procedure TCookieVisitorFrm.Chromium1BeforeContextMenu(Sender: TObject;
const browser: ICefBrowser; const frame: ICefFrame;
const params: ICefContextMenuParams; const model: ICefMenuModel);
begin
model.AddSeparator;
model.AddItem(MINIBROWSER_CONTEXTMENU_DELETECOOKIES, 'Delete cookies');
model.AddSeparator;
model.AddItem(MINIBROWSER_CONTEXTMENU_GETCOOKIES, 'Visit cookies');
model.AddItem(MINIBROWSER_CONTEXTMENU_SETCOOKIE, 'Set cookie');
end;
procedure TCookieVisitorFrm.Chromium1BeforePopup(Sender: TObject;
const browser: ICefBrowser; const frame: ICefFrame; const targetUrl,
targetFrameName: ustring; targetDisposition: TCefWindowOpenDisposition;
userGesture: Boolean; const popupFeatures: TCefPopupFeatures;
var windowInfo: TCefWindowInfo; var client: ICefClient;
var settings: TCefBrowserSettings; var noJavascriptAccess: Boolean;
var Result: Boolean);
begin
// For simplicity, this demo blocks all popup windows and new tabs
Result := (targetDisposition in [WOD_NEW_FOREGROUND_TAB, WOD_NEW_BACKGROUND_TAB, WOD_NEW_POPUP, WOD_NEW_WINDOW]);
end;
procedure TCookieVisitorFrm.Chromium1Close(Sender: TObject;
const browser: ICefBrowser; out Result: Boolean);
begin
PostMessage(Handle, CEF_DESTROY, 0, 0);
Result := True;
end;
procedure TCookieVisitorFrm.Chromium1ContextMenuCommand(Sender: TObject;
const browser: ICefBrowser; const frame: ICefFrame;
const params: ICefContextMenuParams; commandId: Integer;
eventFlags: Cardinal; out Result: Boolean);
var
TempManager : ICefCookieManager;
begin
Result := False;
case commandId of
MINIBROWSER_CONTEXTMENU_DELETECOOKIES : Chromium1.DeleteCookies;
MINIBROWSER_CONTEXTMENU_GETCOOKIES :
begin
// This should be protected by a mutex
FText := '';
TempManager := TCefCookieManagerRef.Global(nil);
TempManager.VisitAllCookies(FVisitor);
end;
MINIBROWSER_CONTEXTMENU_SETCOOKIE :
begin
TempManager := TCefCookieManagerRef.Global(nil);
if TempManager.SetCookie('https://www.example.com',
'example_cookie_name',
'1234',
'',
'/',
True,
True,
False,
now,
now,
now,
nil) then
PostMessage(Handle, MINIBROWSER_SETCOOKIERSLT, ord(True), 0)
else
PostMessage(Handle, MINIBROWSER_SETCOOKIERSLT, ord(False), 0);
end;
end;
end;
procedure TCookieVisitorFrm.Chromium1CookiesDeleted(Sender: TObject; numDeleted: Integer);
begin
showmessage('Deleted cookies : ' + inttostr(numDeleted));
end;
procedure TCookieVisitorFrm.FormCloseQuery(Sender: TObject; var CanClose: Boolean);
begin
CanClose := FCanClose;
if not(FClosing) then
begin
FClosing := True;
Visible := False;
Chromium1.CloseBrowser(True);
end;
end;
procedure TCookieVisitorFrm.FormCreate(Sender: TObject);
begin
FVisitor := TCefFastCookieVisitor.Create(CookieVisitorProc);
FCanClose := False;
FClosing := False;
end;
procedure TCookieVisitorFrm.FormDestroy(Sender: TObject);
begin
FVisitor := nil;
end;
procedure TCookieVisitorFrm.FormShow(Sender: TObject);
begin
// GlobalCEFApp.GlobalContextInitialized has to be TRUE before creating any browser
// If it's not initialized yet, we use a simple timer to create the browser later.
if not(Chromium1.CreateBrowser(CEFWindowParent1, '')) then Timer1.Enabled := True;
end;
procedure TCookieVisitorFrm.WMMove(var aMessage : TWMMove);
begin
inherited;
if (Chromium1 <> nil) then Chromium1.NotifyMoveOrResizeStarted;
end;
procedure TCookieVisitorFrm.WMMoving(var aMessage : TMessage);
begin
inherited;
if (Chromium1 <> nil) then Chromium1.NotifyMoveOrResizeStarted;
end;
procedure TCookieVisitorFrm.WMEnterMenuLoop(var aMessage: TMessage);
begin
inherited;
if (aMessage.wParam = 0) and (GlobalCEFApp <> nil) then GlobalCEFApp.OsmodalLoop := True;
end;
procedure TCookieVisitorFrm.WMExitMenuLoop(var aMessage: TMessage);
begin
inherited;
if (aMessage.wParam = 0) and (GlobalCEFApp <> nil) then GlobalCEFApp.OsmodalLoop := False;
end;
end.