You've already forked CEF4Delphi
mirror of
https://github.com/salvadordf/CEF4Delphi.git
synced 2025-06-12 22:07:39 +02:00
Update to CEF 74.1.19
- Converted almost all the demos to Lazarus thanks to avra - Reorganized "demos" directory.
This commit is contained in:
Salvador Díaz Fau
297
demos/Delphi_VCL/JavaScript/JSDialog/uJSDialogBrowser.pas
Normal file
297
demos/Delphi_VCL/JavaScript/JSDialog/uJSDialogBrowser.pas
Normal file
@ -0,0 +1,297 @@
|
||||
// ************************************************************************
|
||||
// ***************************** 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 uJSDialogBrowser;
|
||||
|
||||
{$I cef.inc}
|
||||
|
||||
interface
|
||||
|
||||
uses
|
||||
{$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, System.SyncObjs,
|
||||
{$ELSE}
|
||||
Windows, Messages, SysUtils, Variants, Classes, Graphics,
|
||||
Controls, Forms, Dialogs, StdCtrls, ExtCtrls, SyncObjs,
|
||||
{$ENDIF}
|
||||
uCEFChromium, uCEFWindowParent, uCEFChromiumWindow, uCEFInterfaces, uCEFTypes, uCEFConstants;
|
||||
|
||||
const
|
||||
CEFBROWSER_SHOWJSDIALOG = WM_APP + $101;
|
||||
|
||||
type
|
||||
TJSDialogBrowserFrm = class(TForm)
|
||||
ChromiumWindow1: TChromiumWindow;
|
||||
AddressPnl: TPanel;
|
||||
AddressEdt: TEdit;
|
||||
GoBtn: TButton;
|
||||
Timer1: TTimer;
|
||||
procedure GoBtnClick(Sender: TObject);
|
||||
procedure FormShow(Sender: TObject);
|
||||
procedure ChromiumWindow1AfterCreated(Sender: TObject);
|
||||
procedure Timer1Timer(Sender: TObject);
|
||||
procedure FormCreate(Sender: TObject);
|
||||
procedure FormDestroy(Sender: TObject);
|
||||
procedure FormCloseQuery(Sender: TObject; var CanClose: Boolean);
|
||||
procedure ChromiumWindow1Close(Sender: TObject);
|
||||
procedure ChromiumWindow1BeforeClose(Sender: TObject);
|
||||
|
||||
protected
|
||||
FJSDialogInfoCS : TCriticalSection;
|
||||
FOriginUrl : ustring;
|
||||
FMessageText : ustring;
|
||||
FDefaultPromptText : ustring;
|
||||
FPendingDlg : boolean;
|
||||
FDialogType : TCefJsDialogType;
|
||||
FCallback : ICefJsDialogCallback;
|
||||
|
||||
// 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.
|
||||
|
||||
procedure Chromium_OnJsdialog(Sender: TObject; const browser: ICefBrowser; const originUrl: ustring; dialogType: TCefJsDialogType; const messageText, defaultPromptText: ustring; const callback: ICefJsDialogCallback; out suppressMessage: Boolean; out Result: Boolean);
|
||||
procedure Chromium_OnBeforePopup(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 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 ShowJSDialogMsg(var aMessage: TMessage); message CEFBROWSER_SHOWJSDIALOG;
|
||||
|
||||
end;
|
||||
|
||||
var
|
||||
JSDialogBrowserFrm: TJSDialogBrowserFrm;
|
||||
|
||||
implementation
|
||||
|
||||
{$R *.dfm}
|
||||
|
||||
uses
|
||||
uCEFApplication;
|
||||
|
||||
// This is a demo with custom JS dialogs
|
||||
|
||||
// Destruction steps
|
||||
// =================
|
||||
// 1. The FormCloseQuery event sets CanClose to False and calls TChromiumWindow.CloseBrowser, which triggers the TChromiumWindow.OnClose event.
|
||||
// 2. The TChromiumWindow.OnClose event calls TChromiumWindow.DestroyChildWindow which triggers the TChromiumWindow.OnBeforeClose event.
|
||||
// 3. TChromiumWindow.OnBeforeClose sets FCanClose to True and closes the form.
|
||||
|
||||
procedure TJSDialogBrowserFrm.FormCreate(Sender: TObject);
|
||||
begin
|
||||
FJSDialogInfoCS := TCriticalSection.Create;
|
||||
FOriginUrl := '';
|
||||
FMessageText := '';
|
||||
FDefaultPromptText := '';
|
||||
FPendingDlg := False;
|
||||
FDialogType := JSDIALOGTYPE_ALERT;
|
||||
FCallback := nil;
|
||||
FCanClose := False;
|
||||
FClosing := False;
|
||||
end;
|
||||
|
||||
procedure TJSDialogBrowserFrm.FormCloseQuery(Sender: TObject; var CanClose: Boolean);
|
||||
begin
|
||||
CanClose := FCanClose;
|
||||
|
||||
if not(FClosing) then
|
||||
begin
|
||||
FClosing := True;
|
||||
Visible := False;
|
||||
ChromiumWindow1.CloseBrowser(True);
|
||||
end;
|
||||
end;
|
||||
|
||||
procedure TJSDialogBrowserFrm.FormDestroy(Sender: TObject);
|
||||
begin
|
||||
FreeAndNil(FJSDialogInfoCS);
|
||||
FCallback := nil;
|
||||
end;
|
||||
|
||||
procedure TJSDialogBrowserFrm.FormShow(Sender: TObject);
|
||||
begin
|
||||
ChromiumWindow1.ChromiumBrowser.OnJsdialog := Chromium_OnJsdialog;
|
||||
ChromiumWindow1.ChromiumBrowser.OnBeforePopup := Chromium_OnBeforePopup;
|
||||
|
||||
// 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(ChromiumWindow1.CreateBrowser) then Timer1.Enabled := True;
|
||||
end;
|
||||
|
||||
procedure TJSDialogBrowserFrm.ChromiumWindow1AfterCreated(Sender: TObject);
|
||||
begin
|
||||
Caption := 'JS Dialog Browser';
|
||||
AddressPnl.Enabled := True;
|
||||
GoBtn.Click;
|
||||
end;
|
||||
|
||||
procedure TJSDialogBrowserFrm.GoBtnClick(Sender: TObject);
|
||||
begin
|
||||
ChromiumWindow1.LoadURL(AddressEdt.Text);
|
||||
end;
|
||||
|
||||
procedure TJSDialogBrowserFrm.Timer1Timer(Sender: TObject);
|
||||
begin
|
||||
Timer1.Enabled := False;
|
||||
if not(ChromiumWindow1.CreateBrowser) and not(ChromiumWindow1.Initialized) then
|
||||
Timer1.Enabled := True;
|
||||
end;
|
||||
|
||||
procedure TJSDialogBrowserFrm.WMMove(var aMessage : TWMMove);
|
||||
begin
|
||||
inherited;
|
||||
|
||||
if (ChromiumWindow1 <> nil) then ChromiumWindow1.NotifyMoveOrResizeStarted;
|
||||
end;
|
||||
|
||||
procedure TJSDialogBrowserFrm.WMMoving(var aMessage : TMessage);
|
||||
begin
|
||||
inherited;
|
||||
|
||||
if (ChromiumWindow1 <> nil) then ChromiumWindow1.NotifyMoveOrResizeStarted;
|
||||
end;
|
||||
|
||||
procedure TJSDialogBrowserFrm.WMEnterMenuLoop(var aMessage: TMessage);
|
||||
begin
|
||||
inherited;
|
||||
|
||||
if (aMessage.wParam = 0) and (GlobalCEFApp <> nil) then GlobalCEFApp.OsmodalLoop := True;
|
||||
end;
|
||||
|
||||
procedure TJSDialogBrowserFrm.WMExitMenuLoop(var aMessage: TMessage);
|
||||
begin
|
||||
inherited;
|
||||
|
||||
if (aMessage.wParam = 0) and (GlobalCEFApp <> nil) then GlobalCEFApp.OsmodalLoop := False;
|
||||
end;
|
||||
|
||||
procedure TJSDialogBrowserFrm.Chromium_OnJsdialog(Sender : TObject;
|
||||
const browser : ICefBrowser;
|
||||
const originUrl : ustring;
|
||||
dialogType : TCefJsDialogType;
|
||||
const messageText : ustring;
|
||||
const defaultPromptText : ustring;
|
||||
const callback : ICefJsDialogCallback;
|
||||
out suppressMessage : Boolean;
|
||||
out Result : Boolean);
|
||||
begin
|
||||
// In this event we must store the dialog information and post a message to the main form to show the dialog
|
||||
FJSDialogInfoCS.Acquire;
|
||||
|
||||
if FPendingDlg then
|
||||
begin
|
||||
Result := False;
|
||||
suppressMessage := True;
|
||||
end
|
||||
else
|
||||
begin
|
||||
FOriginUrl := originUrl;
|
||||
FMessageText := messageText;
|
||||
FDefaultPromptText := defaultPromptText;
|
||||
FDialogType := dialogType;
|
||||
FCallback := callback;
|
||||
FPendingDlg := True;
|
||||
Result := True;
|
||||
suppressMessage := False;
|
||||
|
||||
PostMessage(Handle, CEFBROWSER_SHOWJSDIALOG, 0, 0);
|
||||
end;
|
||||
|
||||
FJSDialogInfoCS.Release;
|
||||
end;
|
||||
|
||||
procedure TJSDialogBrowserFrm.ChromiumWindow1BeforeClose(Sender: TObject);
|
||||
begin
|
||||
FCanClose := True;
|
||||
Close;
|
||||
end;
|
||||
|
||||
procedure TJSDialogBrowserFrm.ChromiumWindow1Close(Sender: TObject);
|
||||
begin
|
||||
// DestroyChildWindow will destroy the child window created by CEF at the top of the Z order.
|
||||
if not(ChromiumWindow1.DestroyChildWindow) then
|
||||
begin
|
||||
FCanClose := True;
|
||||
Close;
|
||||
end;
|
||||
end;
|
||||
|
||||
procedure TJSDialogBrowserFrm.Chromium_OnBeforePopup(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 TJSDialogBrowserFrm.ShowJSDialogMsg(var aMessage: TMessage);
|
||||
var
|
||||
TempCaption : string;
|
||||
begin
|
||||
// Here we show the dialog and reset the information.
|
||||
// showmessage, MessageDlg and InputBox should be replaced by nicer custom forms with the same functionality.
|
||||
|
||||
FJSDialogInfoCS.Acquire;
|
||||
|
||||
if FPendingDlg then
|
||||
begin
|
||||
TempCaption := 'JavaScript message from : ' + FOriginUrl;
|
||||
|
||||
case FDialogType of
|
||||
JSDIALOGTYPE_ALERT : showmessage(TempCaption + CRLF + CRLF + FMessageText);
|
||||
JSDIALOGTYPE_CONFIRM : FCallback.cont((MessageDlg(TempCaption + CRLF + CRLF + FMessageText, mtConfirmation, [mbYes, mbNo], 0, mbYes) = mrYes), '');
|
||||
JSDIALOGTYPE_PROMPT : FCallback.cont(True, InputBox(TempCaption, FMessageText, FDefaultPromptText));
|
||||
end;
|
||||
end;
|
||||
|
||||
FOriginUrl := '';
|
||||
FMessageText := '';
|
||||
FDefaultPromptText := '';
|
||||
FPendingDlg := False;
|
||||
FDialogType := JSDIALOGTYPE_ALERT;
|
||||
FCallback := nil;
|
||||
|
||||
FJSDialogInfoCS.Release;
|
||||
end;
|
||||
|
||||
end.
|
||||
Reference in New Issue
Block a user