{
* UHTTPProtocol.pas
*
* Implements a handler for the "http" URL protocol that displays the URL in the
* default browser.
*
* v1.0 of 14 Nov 2006 - Original version based on code extracted from former
* UProtocolHandler (now UProtocols) unit.
* v1.1 of 04 Nov 2007 - Changed to use TBrowseURL action rather than
* TShellExecAction to display URL in browser.
* v2.0 of 04 Jul 2009 - THTTPProtocol heavily revised:
* - Now implements new abstract SupportsProtocol method
* inherited from revised TProtocol.
* - Now descends from TBrowseProtocol instead of
* directly from TProtocol. Execute method removed as
* inherited method from TBrowseProtocol now used.
* - Class now sealed.
* - Protocol name is now a class constant.
* - Changed call to register protocol to pass only class
* name: protocol prefix no longer required.
*
*
* ***** BEGIN LICENSE BLOCK *****
*
* Version: MPL 1.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at http://www.mozilla.org/MPL/
*
* 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.
*
* The Original Code is UHTTPProtocol.pas
*
* The Initial Developer of the Original Code is Peter Johnson
* (http://www.delphidabbler.com/).
*
* Portions created by the Initial Developer are Copyright (C) 2006-2009 Peter
* Johnson. All Rights Reserved.
*
* ***** END LICENSE BLOCK *****
}
unit UHTTPProtocol;
interface
implementation
uses
// Delphi
StrUtils, ExtActns,
// Project
UBrowseProtocol, UProtocols;
type
{
THTTPProtocol:
Implements a handler for the "HTTP" protocol that causes URL to be displayed
in the default web browser.
}
THTTPProtocol = class sealed(TBrowseProtocol)
strict private
const
cHTTPProtocol = 'http://'; // URL prefix identifying http: protocol
public
class function SupportsProtocol(const URL: string): Boolean; override;
{Checks if a URL uses the http: protocol.
@param URL [in] URL whose protocol is to be checked.
@return True if URL's protocol is http:, False if not.
}
end;
{ THTTPProtocol }
class function THTTPProtocol.SupportsProtocol(const URL: string): Boolean;
{Checks if a URL uses the http: protocol.
@param URL [in] URL whose protocol is to be checked.
@return True if URL's protocol is http:, False if not.
}
begin
Result := AnsiStartsStr(cHTTPProtocol, URL);
end;
initialization
// Register the protocol with the protocol factory
TProtocolFactory.RegisterProtocol(THTTPProtocol);
end.