mirror of
https://github.com/salvadordf/CEF4Delphi.git
synced 2024-11-16 00:05:55 +01:00
289 lines
9.5 KiB
ObjectPascal
289 lines
9.5 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 © 2017 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 uCEFDisplayHandler;
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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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{$I cef.inc}
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interface
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uses
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{$IFDEF DELPHI16_UP}
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System.Classes,
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{$ELSE}
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Classes,
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{$ENDIF}
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uCEFBaseRefCounted, uCEFInterfaces, uCEFTypes;
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type
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TCefDisplayHandlerOwn = class(TCefBaseRefCountedOwn, ICefDisplayHandler)
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protected
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procedure OnAddressChange(const browser: ICefBrowser; const frame: ICefFrame; const url: ustring); virtual;
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procedure OnTitleChange(const browser: ICefBrowser; const title: ustring); virtual;
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procedure OnFaviconUrlChange(const browser: ICefBrowser; iconUrls: TStrings); virtual;
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procedure OnFullScreenModeChange(const browser: ICefBrowser; fullscreen: Boolean); virtual;
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function OnTooltip(const browser: ICefBrowser; var text: ustring): Boolean; virtual;
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procedure OnStatusMessage(const browser: ICefBrowser; const value: ustring); virtual;
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function OnConsoleMessage(const browser: ICefBrowser; const message, source: ustring; line: Integer): Boolean; virtual;
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public
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constructor Create; virtual;
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end;
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TCustomDisplayHandler = class(TCefDisplayHandlerOwn)
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protected
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FEvent: IChromiumEvents;
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procedure OnAddressChange(const browser: ICefBrowser; const frame: ICefFrame; const url: ustring); override;
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procedure OnTitleChange(const browser: ICefBrowser; const title: ustring); override;
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procedure OnFaviconUrlChange(const browser: ICefBrowser; iconUrls: TStrings); override;
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procedure OnFullScreenModeChange(const browser: ICefBrowser; fullscreen: Boolean); override;
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function OnTooltip(const browser: ICefBrowser; var text: ustring): Boolean; override;
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procedure OnStatusMessage(const browser: ICefBrowser; const value: ustring); override;
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function OnConsoleMessage(const browser: ICefBrowser; const message, source: ustring; line: Integer): Boolean; override;
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public
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constructor Create(const events: IChromiumEvents); 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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uCEFMiscFunctions, uCEFLibFunctions, uCEFBrowser, uCEFFrame;
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procedure cef_display_handler_on_address_change(self: PCefDisplayHandler;
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browser: PCefBrowser; frame: PCefFrame; const url: PCefString); stdcall;
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begin
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with TCefDisplayHandlerOwn(CefGetObject(self)) do
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OnAddressChange(
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TCefBrowserRef.UnWrap(browser),
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TCefFrameRef.UnWrap(frame),
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cefstring(url))
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end;
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procedure cef_display_handler_on_title_change(self: PCefDisplayHandler;
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browser: PCefBrowser; const title: PCefString); stdcall;
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begin
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with TCefDisplayHandlerOwn(CefGetObject(self)) do
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OnTitleChange(TCefBrowserRef.UnWrap(browser), CefString(title));
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end;
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procedure cef_display_handler_on_favicon_urlchange(self: PCefDisplayHandler;
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browser: PCefBrowser; icon_urls: TCefStringList); stdcall;
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var
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list: TStringList;
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i: Integer;
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str: TCefString;
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begin
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list := TStringList.Create;
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try
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for i := 0 to cef_string_list_size(icon_urls) - 1 do
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begin
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FillChar(str, SizeOf(str), 0);
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cef_string_list_value(icon_urls, i, @str);
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list.Add(CefStringClearAndGet(str));
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end;
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with TCefDisplayHandlerOwn(CefGetObject(self)) do
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OnFaviconUrlChange(TCefBrowserRef.UnWrap(browser), list);
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finally
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list.Free;
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end;
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end;
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procedure cef_display_handler_on_fullscreen_mode_change(self: PCefDisplayHandler;
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browser: PCefBrowser; fullscreen: Integer); stdcall;
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begin
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with TCefDisplayHandlerOwn(CefGetObject(self)) do
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OnFullScreenModeChange(TCefBrowserRef.UnWrap(browser), fullscreen <> 0);
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end;
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function cef_display_handler_on_tooltip(self: PCefDisplayHandler;
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browser: PCefBrowser; text: PCefString): Integer; stdcall;
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var
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t: ustring;
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begin
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t := CefStringClearAndGet(text^);
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with TCefDisplayHandlerOwn(CefGetObject(self)) do
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Result := Ord(OnTooltip(
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TCefBrowserRef.UnWrap(browser), t));
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text^ := CefStringAlloc(t);
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end;
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procedure cef_display_handler_on_status_message(self: PCefDisplayHandler;
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browser: PCefBrowser; const value: PCefString); stdcall;
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begin
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with TCefDisplayHandlerOwn(CefGetObject(self)) do
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OnStatusMessage(TCefBrowserRef.UnWrap(browser), CefString(value));
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end;
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function cef_display_handler_on_console_message(self: PCefDisplayHandler;
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browser: PCefBrowser; const message: PCefString;
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const source: PCefString; line: Integer): Integer; stdcall;
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begin
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with TCefDisplayHandlerOwn(CefGetObject(self)) do
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Result := Ord(OnConsoleMessage(TCefBrowserRef.UnWrap(browser),
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CefString(message), CefString(source), line));
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end;
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constructor TCefDisplayHandlerOwn.Create;
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begin
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inherited CreateData(SizeOf(TCefDisplayHandler));
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with PCefDisplayHandler(FData)^ do
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begin
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on_address_change := cef_display_handler_on_address_change;
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on_title_change := cef_display_handler_on_title_change;
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on_favicon_urlchange := cef_display_handler_on_favicon_urlchange;
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on_fullscreen_mode_change := cef_display_handler_on_fullscreen_mode_change;
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on_tooltip := cef_display_handler_on_tooltip;
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on_status_message := cef_display_handler_on_status_message;
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on_console_message := cef_display_handler_on_console_message;
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end;
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end;
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procedure TCefDisplayHandlerOwn.OnAddressChange(const browser: ICefBrowser;
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const frame: ICefFrame; const url: ustring);
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begin
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end;
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function TCefDisplayHandlerOwn.OnConsoleMessage(const browser: ICefBrowser;
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const message, source: ustring; line: Integer): Boolean;
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begin
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Result := False;
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end;
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procedure TCefDisplayHandlerOwn.OnFaviconUrlChange(const browser: ICefBrowser;
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iconUrls: TStrings);
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begin
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end;
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procedure TCefDisplayHandlerOwn.OnFullScreenModeChange(
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const browser: ICefBrowser; fullscreen: Boolean);
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begin
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end;
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procedure TCefDisplayHandlerOwn.OnStatusMessage(const browser: ICefBrowser;
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const value: ustring);
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begin
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end;
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procedure TCefDisplayHandlerOwn.OnTitleChange(const browser: ICefBrowser;
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const title: ustring);
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begin
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end;
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function TCefDisplayHandlerOwn.OnTooltip(const browser: ICefBrowser;
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var text: ustring): Boolean;
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begin
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Result := False;
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end;
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// TCustomDisplayHandler
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constructor TCustomDisplayHandler.Create(const events: IChromiumEvents);
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begin
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inherited Create;
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FEvent := events;
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end;
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destructor TCustomDisplayHandler.Destroy;
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begin
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FEvent := nil;
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inherited Destroy;
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end;
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procedure TCustomDisplayHandler.OnAddressChange(const browser : ICefBrowser;
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const frame : ICefFrame;
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const url : ustring);
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begin
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if (FEvent <> nil) then FEvent.doOnAddressChange(browser, frame, url);
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end;
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function TCustomDisplayHandler.OnConsoleMessage(const browser : ICefBrowser;
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const message : ustring;
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const source : ustring;
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line : Integer): Boolean;
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begin
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if (FEvent <> nil) then
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Result := FEvent.doOnConsoleMessage(browser, message, source, line)
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else
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Result := inherited OnConsoleMessage(browser, message, source, line);
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end;
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procedure TCustomDisplayHandler.OnFaviconUrlChange(const browser: ICefBrowser; iconUrls: TStrings);
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begin
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if (FEvent <> nil) then FEvent.doOnFaviconUrlChange(browser, iconUrls);
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end;
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procedure TCustomDisplayHandler.OnFullScreenModeChange(const browser: ICefBrowser; fullscreen: Boolean);
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begin
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if (FEvent <> nil) then FEvent.doOnFullScreenModeChange(browser, fullscreen);
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end;
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procedure TCustomDisplayHandler.OnStatusMessage(const browser: ICefBrowser; const value: ustring);
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begin
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if (FEvent <> nil) then FEvent.doOnStatusMessage(browser, value);
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end;
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procedure TCustomDisplayHandler.OnTitleChange(const browser: ICefBrowser; const title: ustring);
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begin
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if (FEvent <> nil) then FEvent.doOnTitleChange(browser, title);
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end;
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function TCustomDisplayHandler.OnTooltip(const browser: ICefBrowser; var text: ustring): Boolean;
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begin
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if (FEvent <> nil) then
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Result := FEvent.doOnTooltip(browser, text)
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else
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Result := inherited OnTooltip(browser, text);
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end;
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end.
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