mirror of
https://github.com/salvadordf/CEF4Delphi.git
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270 lines
11 KiB
ObjectPascal
270 lines
11 KiB
ObjectPascal
// ************************************************************************
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// ***************************** CEF4Delphi *******************************
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// ************************************************************************
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//
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// CEF4Delphi is based on DCEF3 which uses CEF3 to embed a chromium-based
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// browser in Delphi applications.
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//
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// The original license of DCEF3 still applies to CEF4Delphi.
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//
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// For more information about CEF4Delphi visit :
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// https://www.briskbard.com/index.php?lang=en&pageid=cef
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//
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// Copyright © 2018 Salvador Díaz Fau. All rights reserved.
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//
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// ************************************************************************
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// ************ vvvv Original license and comments below vvvv *************
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// ************************************************************************
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(*
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* Delphi Chromium Embedded 3
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*
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* Usage allowed under the restrictions of the Lesser GNU General Public License
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* or alternatively the restrictions of the Mozilla Public License 1.1
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for
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* the specific language governing rights and limitations under the License.
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*
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* Unit owner : Henri Gourvest <hgourvest@gmail.com>
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* Web site : http://www.progdigy.com
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* Repository : http://code.google.com/p/delphichromiumembedded/
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* Group : http://groups.google.com/group/delphichromiumembedded
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*
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* Embarcadero Technologies, Inc is not permitted to use or redistribute
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* this source code without explicit permission.
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*
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*)
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unit uCEFLifeSpanHandler;
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{$IFNDEF CPUX64}
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{$ALIGN ON}
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{$MINENUMSIZE 4}
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{$ENDIF}
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{$I cef.inc}
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interface
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uses
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uCEFBaseRefCounted, uCEFInterfaces, uCEFTypes;
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type
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TCefLifeSpanHandlerOwn = class(TCefBaseRefCountedOwn, ICefLifeSpanHandler)
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protected
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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;
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procedure OnAfterCreated(const browser: ICefBrowser); virtual;
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procedure OnBeforeClose(const browser: ICefBrowser); virtual;
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function DoClose(const browser: ICefBrowser): Boolean; virtual;
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procedure RemoveReferences; virtual;
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public
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constructor Create; virtual;
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end;
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TCustomLifeSpanHandler = class(TCefLifeSpanHandlerOwn)
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protected
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FEvents : Pointer;
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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;
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procedure OnAfterCreated(const browser: ICefBrowser); override;
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procedure OnBeforeClose(const browser: ICefBrowser); override;
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function DoClose(const browser: ICefBrowser): Boolean; override;
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procedure RemoveReferences; override;
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public
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constructor Create(const events: Pointer); reintroduce; virtual;
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destructor Destroy; override;
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end;
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implementation
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uses
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{$IFDEF DELPHI16_UP}
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System.SysUtils,
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{$ELSE}
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SysUtils,
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{$ENDIF}
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uCEFMiscFunctions, uCEFLibFunctions, uCEFClient, uCEFBrowser, uCEFFrame;
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function cef_life_span_handler_on_before_popup( self : PCefLifeSpanHandler;
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browser : PCefBrowser;
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frame : PCefFrame;
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const target_url : PCefString;
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const target_frame_name : PCefString;
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target_disposition : TCefWindowOpenDisposition;
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user_gesture : Integer;
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const popupFeatures : PCefPopupFeatures;
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windowInfo : PCefWindowInfo;
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var client : PCefClient;
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settings : PCefBrowserSettings;
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no_javascript_access : PInteger): Integer; stdcall;
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var
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TempURL : ustring;
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TempFrame : ustring;
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TempClient : ICefClient;
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TempOldCli : pointer;
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TempNoJS : Boolean;
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begin
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TempURL := CefString(target_url);
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TempFrame := CefString(target_frame_name);
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TempNoJS := (no_javascript_access^ <> 0);
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TempClient := TCefClientRef.UnWrap(client);
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TempOldCli := pointer(TempClient);
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with TCefLifeSpanHandlerOwn(CefGetObject(self)) do
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Result := Ord(OnBeforePopup(TCefBrowserRef.UnWrap(browser),
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TCefFrameRef.UnWrap(frame),
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TempURL,
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TempFrame,
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target_disposition,
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user_gesture <> 0,
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popupFeatures^,
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windowInfo^,
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TempClient,
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settings^,
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TempNoJS));
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CefStringSet(target_url, TempURL);
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CefStringSet(target_frame_name, TempFrame);
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no_javascript_access^ := Ord(TempNoJS);
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if (TempClient = nil) then
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client := nil
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else
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if (TempOldCli <> pointer(TempClient)) then
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client := CefGetData(TempClient);
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end;
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procedure cef_life_span_handler_on_after_created(self: PCefLifeSpanHandler; browser: PCefBrowser); stdcall;
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begin
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with TCefLifeSpanHandlerOwn(CefGetObject(self)) do
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OnAfterCreated(TCefBrowserRef.UnWrap(browser));
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end;
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procedure cef_life_span_handler_on_before_close(self: PCefLifeSpanHandler; browser: PCefBrowser); stdcall;
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begin
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with TCefLifeSpanHandlerOwn(CefGetObject(self)) do
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OnBeforeClose(TCefBrowserRef.UnWrap(browser));
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end;
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function cef_life_span_handler_do_close(self: PCefLifeSpanHandler; browser: PCefBrowser): Integer; stdcall;
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begin
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with TCefLifeSpanHandlerOwn(CefGetObject(self)) do
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Result := Ord(DoClose(TCefBrowserRef.UnWrap(browser)));
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end;
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constructor TCefLifeSpanHandlerOwn.Create;
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begin
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inherited CreateData(SizeOf(TCefLifeSpanHandler));
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with PCefLifeSpanHandler(FData)^ do
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begin
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on_before_popup := cef_life_span_handler_on_before_popup;
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on_after_created := cef_life_span_handler_on_after_created;
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on_before_close := cef_life_span_handler_on_before_close;
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do_close := cef_life_span_handler_do_close;
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end;
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end;
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procedure TCefLifeSpanHandlerOwn.OnAfterCreated(const browser: ICefBrowser);
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begin
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end;
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procedure TCefLifeSpanHandlerOwn.OnBeforeClose(const browser: ICefBrowser);
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begin
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end;
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function TCefLifeSpanHandlerOwn.OnBeforePopup(const browser : ICefBrowser;
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const frame : ICefFrame;
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const targetUrl : ustring;
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const targetFrameName : ustring;
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targetDisposition : TCefWindowOpenDisposition;
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userGesture : Boolean;
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var popupFeatures : TCefPopupFeatures;
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var windowInfo : TCefWindowInfo;
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var client : ICefClient;
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var settings : TCefBrowserSettings;
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var noJavascriptAccess : Boolean): Boolean;
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begin
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Result := False;
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end;
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function TCefLifeSpanHandlerOwn.DoClose(const browser: ICefBrowser): Boolean;
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begin
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Result := False;
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end;
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procedure TCefLifeSpanHandlerOwn.RemoveReferences;
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begin
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//
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end;
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// TCustomLifeSpanHandler
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constructor TCustomLifeSpanHandler.Create(const events: Pointer);
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begin
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inherited Create;
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FEvents := events;
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end;
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destructor TCustomLifeSpanHandler.Destroy;
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begin
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RemoveReferences;
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inherited Destroy;
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end;
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procedure TCustomLifeSpanHandler.RemoveReferences;
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begin
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FEvents := nil;
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end;
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function TCustomLifeSpanHandler.DoClose(const browser: ICefBrowser): Boolean;
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begin
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if (FEvents <> nil) then
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Result := IChromiumEvents(FEvents).doOnClose(browser)
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else
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Result := inherited DoClose(browser);
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end;
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procedure TCustomLifeSpanHandler.OnAfterCreated(const browser: ICefBrowser);
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begin
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if (FEvents <> nil) then IChromiumEvents(FEvents).doOnAfterCreated(browser);
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end;
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procedure TCustomLifeSpanHandler.OnBeforeClose(const browser: ICefBrowser);
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begin
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if (FEvents <> nil) then IChromiumEvents(FEvents).doOnBeforeClose(browser);
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end;
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function TCustomLifeSpanHandler.OnBeforePopup(const browser : ICefBrowser;
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const frame : ICefFrame;
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const targetUrl : ustring;
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const targetFrameName : ustring;
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targetDisposition : TCefWindowOpenDisposition;
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userGesture : Boolean;
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var popupFeatures : TCefPopupFeatures;
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var windowInfo : TCefWindowInfo;
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var client : ICefClient;
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var settings : TCefBrowserSettings;
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var noJavascriptAccess : Boolean): Boolean;
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begin
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if (FEvents <> nil) then
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Result := IChromiumEvents(FEvents).doOnBeforePopup(browser, frame, targetUrl, targetFrameName,
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targetDisposition, userGesture, popupFeatures,
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windowInfo, client, settings, noJavascriptAccess)
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else
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Result := inherited OnBeforePopup(browser, frame, targetUrl, targetFrameName,
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targetDisposition, userGesture, popupFeatures,
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windowInfo, client, settings, noJavascriptAccess);
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end;
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end.
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