// ************************************************************************
// ***************************** 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 uCEFLifeSpanHandler;

{$IFNDEF CPUX64}
  {$ALIGN ON}
  {$MINENUMSIZE 4}
{$ENDIF}

{$I cef.inc}

interface

uses
  uCEFBaseRefCounted, uCEFInterfaces, uCEFTypes;

type
  TCefLifeSpanHandlerOwn = class(TCefBaseRefCountedOwn, ICefLifeSpanHandler)
    protected
      function  OnBeforePopup(const browser: ICefBrowser; const frame: ICefFrame; const targetUrl, targetFrameName: ustring; targetDisposition: TCefWindowOpenDisposition; userGesture: Boolean; var popupFeatures: TCefPopupFeatures; var windowInfo: TCefWindowInfo; var client: ICefClient; var settings: TCefBrowserSettings; var noJavascriptAccess: Boolean): Boolean; virtual;
      procedure OnAfterCreated(const browser: ICefBrowser); virtual;
      procedure OnBeforeClose(const browser: ICefBrowser); virtual;
      function  DoClose(const browser: ICefBrowser): Boolean; virtual;

    public
      constructor Create; virtual;
  end;

  TCustomLifeSpanHandler = class(TCefLifeSpanHandlerOwn)
    protected
      FEvent: IChromiumEvents;

      function  OnBeforePopup(const browser: ICefBrowser; const frame: ICefFrame; const targetUrl, targetFrameName: ustring; targetDisposition: TCefWindowOpenDisposition; userGesture: Boolean; var popupFeatures: TCefPopupFeatures; var windowInfo: TCefWindowInfo; var client: ICefClient; var settings: TCefBrowserSettings; var noJavascriptAccess: Boolean): Boolean; override;
      procedure OnAfterCreated(const browser: ICefBrowser); override;
      procedure OnBeforeClose(const browser: ICefBrowser); override;
      function  DoClose(const browser: ICefBrowser): Boolean; override;

    public
      constructor Create(const events: IChromiumEvents); reintroduce; virtual;
  end;

implementation

uses
  uCEFMiscFunctions, uCEFLibFunctions, uCEFClient, uCEFBrowser, uCEFFrame;

function cef_life_span_handler_on_before_popup(self: PCefLifeSpanHandler;
  browser: PCefBrowser; frame: PCefFrame; const target_url, target_frame_name: PCefString;
  target_disposition: TCefWindowOpenDisposition; user_gesture: Integer;
  const popupFeatures: PCefPopupFeatures; windowInfo: PCefWindowInfo; var client: PCefClient;
  settings: PCefBrowserSettings; no_javascript_access: PInteger): Integer; stdcall;
var
  _url, _frame: ustring;
  _client: ICefClient;
  _nojs: Boolean;
begin
  _url := CefString(target_url);
  _frame := CefString(target_frame_name);
  _client := TCefClientOwn(CefGetObject(client)) as ICefClient;
  _nojs := no_javascript_access^ <> 0;
  with TCefLifeSpanHandlerOwn(CefGetObject(self)) do
    Result := Ord(OnBeforePopup(
      TCefBrowserRef.UnWrap(browser),
      TCefFrameRef.UnWrap(frame),
      _url,
      _frame,
      target_disposition,
      user_gesture <> 0,
      popupFeatures^,
      windowInfo^,
      _client,
      settings^,
      _nojs
    ));
  CefStringSet(target_url, _url);
  CefStringSet(target_frame_name, _frame);
  client := CefGetData(_client);
  no_javascript_access^ := Ord(_nojs);
  _client := nil;
end;

procedure cef_life_span_handler_on_after_created(self: PCefLifeSpanHandler; browser: PCefBrowser); stdcall;
begin
  with TCefLifeSpanHandlerOwn(CefGetObject(self)) do
    OnAfterCreated(TCefBrowserRef.UnWrap(browser));
end;

procedure cef_life_span_handler_on_before_close(self: PCefLifeSpanHandler; browser: PCefBrowser); stdcall;
begin
  with TCefLifeSpanHandlerOwn(CefGetObject(self)) do
    OnBeforeClose(TCefBrowserRef.UnWrap(browser));
end;

function cef_life_span_handler_do_close(self: PCefLifeSpanHandler; browser: PCefBrowser): Integer; stdcall;
begin
  with TCefLifeSpanHandlerOwn(CefGetObject(self)) do
    Result := Ord(DoClose(TCefBrowserRef.UnWrap(browser)));
end;

constructor TCefLifeSpanHandlerOwn.Create;
begin
  inherited CreateData(SizeOf(TCefLifeSpanHandler));
  with PCefLifeSpanHandler(FData)^ do
  begin
    on_before_popup := cef_life_span_handler_on_before_popup;
    on_after_created := cef_life_span_handler_on_after_created;
    on_before_close := cef_life_span_handler_on_before_close;
    do_close := cef_life_span_handler_do_close;
  end;
end;

procedure TCefLifeSpanHandlerOwn.OnAfterCreated(const browser: ICefBrowser);
begin

end;

procedure TCefLifeSpanHandlerOwn.OnBeforeClose(const browser: ICefBrowser);
begin

end;

function TCefLifeSpanHandlerOwn.OnBeforePopup(const browser: ICefBrowser;
  const frame: ICefFrame; const targetUrl, targetFrameName: ustring;
  targetDisposition: TCefWindowOpenDisposition; userGesture: Boolean;
  var popupFeatures: TCefPopupFeatures; var windowInfo: TCefWindowInfo;
  var client: ICefClient; var settings: TCefBrowserSettings;
  var noJavascriptAccess: Boolean): Boolean;
begin
  Result := False;
end;

function TCefLifeSpanHandlerOwn.DoClose(const browser: ICefBrowser): Boolean;
begin
  Result := False;
end;

// TCustomLifeSpanHandler

constructor TCustomLifeSpanHandler.Create(const events: IChromiumEvents);
begin
  inherited Create;
  FEvent := events;
end;

function TCustomLifeSpanHandler.DoClose(const browser: ICefBrowser): Boolean;
begin
  Result := FEvent.doOnClose(browser);
end;

procedure TCustomLifeSpanHandler.OnAfterCreated(const browser: ICefBrowser);
begin
  FEvent.doOnAfterCreated(browser);
end;

procedure TCustomLifeSpanHandler.OnBeforeClose(const browser: ICefBrowser);
begin
  FEvent.doOnBeforeClose(browser);
end;


function TCustomLifeSpanHandler.OnBeforePopup(const browser: ICefBrowser;
  const frame: ICefFrame; const targetUrl, targetFrameName: ustring;
  targetDisposition: TCefWindowOpenDisposition; userGesture: Boolean;
  var popupFeatures: TCefPopupFeatures; var windowInfo: TCefWindowInfo;
  var client: ICefClient; var settings: TCefBrowserSettings;
  var noJavascriptAccess: Boolean): Boolean;
begin
  Result := FEvent.doOnBeforePopup(browser, frame, targetUrl, targetFrameName,
    targetDisposition, userGesture, popupFeatures, windowInfo, client, settings,
    noJavascriptAccess);
end;

end.