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171 lines
6.9 KiB
Plaintext
171 lines
6.9 KiB
Plaintext
/* -*- Mode: C++; tab-width: 3; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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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
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is the Mozilla browser.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications, Inc.
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* Portions created by the Initial Developer are Copyright (C) 1999
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Scott MacGregor <mscott@netscape.com>
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* Myk Melez <myk@mozilla.org>
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* Dan Mosedale <dmose@mozilla.org>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either of the GNU General Public License Version 2 or later (the "GPL"),
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* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "nsISupports.idl"
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interface nsIURI;
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interface nsIFile;
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interface nsIInterfaceRequestor;
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interface nsIHandlerInfo;
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/**
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* The external protocol service is used for finding and launching
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* web handlers (a la registerProtocolHandler in the HTML5 draft) or
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* platform-specific applications for handling particular protocols.
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*
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* You can ask the external protocol service if it has an external
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* handler for a given protocol scheme. And you can ask it to load
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* the url using the default handler.
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*/
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[scriptable, uuid(70f93b7a-3ec6-4bcb-b093-92d9984c9f83)]
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interface nsIExternalProtocolService : nsISupports
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{
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/**
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* Check whether a handler for a specific protocol exists. Specifically,
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* this looks to see whether there are any known possible application handlers
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* in either the nsIHandlerService datastore or registered with the OS.
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*
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* @param aProtocolScheme The scheme from a url: http, ftp, mailto, etc.
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*
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* @return true if we have a handler and false otherwise.
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*
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* XXX shouldn't aProtocolScheme be an ACString like nsIURI::scheme?
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*/
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boolean externalProtocolHandlerExists(in string aProtocolScheme);
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/**
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* Check whether a handler for a specific protocol is "exposed" as a visible
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* feature of the current application.
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*
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* An exposed protocol handler is one that can be used in all contexts. A
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* non-exposed protocol handler is one that can only be used internally by the
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* application. For example, a non-exposed protocol would not be loaded by the
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* application in response to a link click or a X-remote openURL command.
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* Instead, it would be deferred to the system's external protocol handler.
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* XXX shouldn't aProtocolScheme be an ACString like nsIURI::scheme?
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*/
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boolean isExposedProtocol(in string aProtocolScheme);
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/**
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* Retrieve the handler for the given protocol. If neither the application
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* nor the OS knows about a handler for the protocol, the object this method
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* returns will represent a default handler for unknown content.
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*
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* @param aProtocolScheme the scheme from a URL: http, ftp, mailto, etc.
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*
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* Note: aProtocolScheme should not include a trailing colon, which is part
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* of the URI syntax, not part of the scheme itself (i.e. pass "mailto" not
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* "mailto:").
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*
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* @return the handler, if any; otherwise a default handler
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*/
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nsIHandlerInfo getProtocolHandlerInfo(in ACString aProtocolScheme);
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/**
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* Given a scheme, looks up the protocol info from the OS. This should be
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* overridden by each OS's implementation.
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*
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* @param aScheme The protocol scheme we are looking for.
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* @param aFound Was an OS default handler for this scheme found?
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* @return An nsIHanderInfo for the protocol.
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*/
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nsIHandlerInfo getProtocolHandlerInfoFromOS(in ACString aProtocolScheme,
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out boolean aFound);
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/**
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* Set some sane defaults for a protocol handler object.
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*
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* @param aHandlerInfo nsIHandlerInfo object, as returned by
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* getProtocolHandlerInfoFromOS
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* @param aOSHandlerExists was the object above created for an extant
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* OS default handler? This is generally the
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* value of the aFound out param from
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* getProtocolHandlerInfoFromOS.
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*/
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void setProtocolHandlerDefaults(in nsIHandlerInfo aHandlerInfo,
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in boolean aOSHandlerExists);
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/**
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* Used to load a url via an external protocol handler (if one exists)
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*
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* @param aURL The url to load
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*
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* @deprecated Use LoadURI instead (See Bug 389565 for removal)
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*/
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[deprecated] void loadUrl(in nsIURI aURL);
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/**
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* Used to load a URI via an external application. Might prompt the user for
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* permission to load the external application.
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*
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* @param aURI
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* The URI to load
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*
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* @param aWindowContext
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* The window to parent the dialog against, and, if a web handler
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* is chosen, it is loaded in this window as well. This parameter
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* may be ultimately passed nsIURILoader.openURI in the case of a
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* web handler, and aWindowContext is null or not present, web
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* handlers will fail. We need to do better than that; bug 394483
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* filed in order to track.
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*
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* @note Embedders that do not expose the http protocol should not currently
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* use web-based protocol handlers, as handoff won't work correctly
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* (bug 394479).
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*/
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void loadURI(in nsIURI aURI,
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[optional] in nsIInterfaceRequestor aWindowContext);
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/**
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* Gets a human-readable description for the application responsible for
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* handling a specific protocol.
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*
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* @param aScheme The scheme to look up. For example, "mms".
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*
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* @throw NS_ERROR_NOT_IMPLEMENTED
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* If getting descriptions for protocol helpers is not supported
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* @throw NS_ERROR_NOT_AVAILABLE
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* If no protocol helper exists for this scheme, or if it is not
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* possible to get a description for it.
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*/
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AString getApplicationDescription(in AUTF8String aScheme);
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};
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