mirror of
https://github.com/salvadordf/CEF4Delphi.git
synced 2025-04-17 06:57:13 +02:00
f764c39cc1
Remove the outdated license text. Use the main cef.inc file in all Delphi demos. Fixed issue #493.
218 lines
7.8 KiB
ObjectPascal
218 lines
7.8 KiB
ObjectPascal
unit uMainForm;
|
|
|
|
{$I ..\..\..\source\cef.inc}
|
|
|
|
interface
|
|
|
|
uses
|
|
{$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, uCEFChromiumWindow, uCEFInterfaces, uCustomResourceHandler,
|
|
uCEFConstants, uCEFTypes, uCEFWinControl, uCEFLinkedWinControlBase;
|
|
|
|
type
|
|
TMainForm = class(TForm)
|
|
ChromiumWindow1: TChromiumWindow;
|
|
AddressBarPnl: TPanel;
|
|
Edit1: TEdit;
|
|
Button1: TButton;
|
|
Timer1: TTimer;
|
|
|
|
procedure FormCreate(Sender: TObject);
|
|
procedure FormCloseQuery(Sender: TObject; var CanClose: Boolean);
|
|
procedure FormShow(Sender: TObject);
|
|
|
|
procedure Button1Click(Sender: TObject);
|
|
procedure Timer1Timer(Sender: TObject);
|
|
|
|
procedure ChromiumWindow1Close(Sender: TObject);
|
|
procedure ChromiumWindow1BeforeClose(Sender: TObject);
|
|
|
|
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;
|
|
|
|
protected
|
|
// 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.
|
|
|
|
FHandler : ICefResourceHandler;
|
|
|
|
procedure Chromium_OnAfterCreated(Sender: TObject);
|
|
procedure Chromium_OnGetResourceHandler(Sender: TObject; const browser: ICefBrowser; const frame: ICefFrame; const request: ICefRequest; var aResourceHandler : ICefResourceHandler);
|
|
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 extra_info: ICefDictionaryValue; var noJavascriptAccess: Boolean; var Result: Boolean);
|
|
|
|
public
|
|
{ Public declarations }
|
|
end;
|
|
|
|
var
|
|
MainForm: TMainForm;
|
|
|
|
procedure CreateGlobalCEFApp;
|
|
|
|
implementation
|
|
|
|
{$R *.dfm}
|
|
|
|
uses
|
|
uCEFMiscFunctions, uCEFApplication;
|
|
|
|
// 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 := True and sends WM_CLOSE to the form.
|
|
|
|
procedure CreateGlobalCEFApp;
|
|
begin
|
|
GlobalCEFApp := TCefApplication.Create;
|
|
//GlobalCEFApp.LogFile := 'cef.log';
|
|
//GlobalCEFApp.LogSeverity := LOGSEVERITY_VERBOSE;
|
|
end;
|
|
|
|
procedure TMainForm.Button1Click(Sender: TObject);
|
|
begin
|
|
ChromiumWindow1.LoadURL(Edit1.Text);
|
|
end;
|
|
|
|
procedure TMainForm.FormCloseQuery(Sender: TObject; var CanClose: Boolean);
|
|
begin
|
|
CanClose := FCanClose;
|
|
|
|
if not(FClosing) then
|
|
begin
|
|
FClosing := True;
|
|
Visible := False;
|
|
FHandler := nil;
|
|
ChromiumWindow1.CloseBrowser(True);
|
|
end;
|
|
end;
|
|
|
|
procedure TMainForm.FormCreate(Sender: TObject);
|
|
var
|
|
TempStream : TStringStream;
|
|
begin
|
|
TempStream := nil;
|
|
FCanClose := False;
|
|
FClosing := False;
|
|
|
|
try
|
|
try
|
|
TempStream := TStringStream.Create('<!DOCTYPE html><html><body><p>test</p></body></html>', TEncoding.UTF8, false);
|
|
FHandler := TCustomResourceHandler.Create(nil, nil, '', nil, TStream(TempStream), CefGetMimeType('html'));
|
|
except
|
|
on e : exception do
|
|
if CustomExceptionHandler('TMainForm.FormCreate', e) then raise;
|
|
end;
|
|
finally
|
|
if (TempStream <> nil) then FreeAndNil(TempStream);
|
|
end;
|
|
end;
|
|
|
|
procedure TMainForm.FormShow(Sender: TObject);
|
|
begin
|
|
ChromiumWindow1.OnAfterCreated := Chromium_OnAfterCreated;
|
|
ChromiumWindow1.ChromiumBrowser.OnGetResourceHandler := Chromium_OnGetResourceHandler;
|
|
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 TMainForm.Timer1Timer(Sender: TObject);
|
|
begin
|
|
Timer1.Enabled := False;
|
|
if not(ChromiumWindow1.CreateBrowser) and not(ChromiumWindow1.Initialized) then
|
|
Timer1.Enabled := True;
|
|
end;
|
|
|
|
procedure TMainForm.ChromiumWindow1BeforeClose(Sender: TObject);
|
|
begin
|
|
FCanClose := True;
|
|
PostMessage(Handle, WM_CLOSE, 0, 0);
|
|
end;
|
|
|
|
procedure TMainForm.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;
|
|
PostMessage(Handle, WM_CLOSE, 0, 0);
|
|
end;
|
|
end;
|
|
|
|
procedure TMainForm.Chromium_OnAfterCreated(Sender: TObject);
|
|
begin
|
|
ChromiumWindow1.UpdateSize;
|
|
AddressBarPnl.Enabled := True;
|
|
end;
|
|
|
|
procedure TMainForm.Chromium_OnGetResourceHandler( Sender : TObject;
|
|
const browser : ICefBrowser;
|
|
const frame : ICefFrame;
|
|
const request : ICefRequest;
|
|
var aResourceHandler : ICefResourceHandler);
|
|
begin
|
|
aResourceHandler := FHandler;
|
|
end;
|
|
|
|
procedure TMainForm.Chromium_OnBeforePopup( Sender : TObject;
|
|
const browser : ICefBrowser;
|
|
const frame : ICefFrame;
|
|
const targetUrl : ustring;
|
|
const targetFrameName : ustring;
|
|
targetDisposition : TCefWindowOpenDisposition;
|
|
userGesture : Boolean;
|
|
const popupFeatures : TCefPopupFeatures;
|
|
var windowInfo : TCefWindowInfo;
|
|
var client : ICefClient;
|
|
var settings : TCefBrowserSettings;
|
|
var extra_info : ICefDictionaryValue;
|
|
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 TMainForm.WMMove(var aMessage : TWMMove);
|
|
begin
|
|
inherited;
|
|
|
|
if (ChromiumWindow1 <> nil) then ChromiumWindow1.NotifyMoveOrResizeStarted;
|
|
end;
|
|
|
|
procedure TMainForm.WMMoving(var aMessage : TMessage);
|
|
begin
|
|
inherited;
|
|
|
|
if (ChromiumWindow1 <> nil) then ChromiumWindow1.NotifyMoveOrResizeStarted;
|
|
end;
|
|
|
|
procedure TMainForm.WMEnterMenuLoop(var aMessage: TMessage);
|
|
begin
|
|
inherited;
|
|
|
|
if (aMessage.wParam = 0) and (GlobalCEFApp <> nil) then GlobalCEFApp.OsmodalLoop := True;
|
|
end;
|
|
|
|
procedure TMainForm.WMExitMenuLoop(var aMessage: TMessage);
|
|
begin
|
|
inherited;
|
|
|
|
if (aMessage.wParam = 0) and (GlobalCEFApp <> nil) then GlobalCEFApp.OsmodalLoop := False;
|
|
end;
|
|
|
|
end.
|