pjs/webshell/public/nsILinkHandler.h

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: NPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Netscape 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/NPL/
*
* 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 Mozilla Communicator client code.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the NPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the NPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#ifndef nsILinkHandler_h___
#define nsILinkHandler_h___
#include "nsISupports.h"
class nsIInputStream;
class nsIDocShell;
class nsIRequest;
class nsIContent;
class nsString;
struct nsGUIEvent;
// Interface ID for nsILinkHandler
#define NS_ILINKHANDLER_IID \
{ 0xa6cf905b, 0x15b3, 0x11d2,{0x93, 0x2e, 0x00, 0x80, 0x5f, 0x8a, 0xdd, 0x32}}
enum nsLinkState {
eLinkState_Unknown = 0,
eLinkState_Unvisited = 1,
eLinkState_Visited = 2,
eLinkState_NotLink = 3
};
// XXX Verb to use for link actuation. These are the verbs specified
// in the current XLink draft. We may actually want to support more
// (especially for extended links).
enum nsLinkVerb {
eLinkVerb_Replace = 0,
eLinkVerb_New = 1,
eLinkVerb_Embed = 2,
eLinkVerb_Undefined = 3
};
/**
* Interface used for handling clicks on links
*/
class nsILinkHandler : public nsISupports {
public:
NS_DEFINE_STATIC_IID_ACCESSOR(NS_ILINKHANDLER_IID)
/**
* Process a click on a link.
*
* @param aContent the content for the frame that generated the trigger
* @param aVerb the verb to use when the link is triggered
* @param aURI a URI object that defines the destination for the link
* @param aTargetSpec indicates where the link is targeted (may be an empty
* string)
* @param aPostDataStream the POST data to send
* @param aHeadersDataStream ???
*/
NS_IMETHOD OnLinkClick(nsIContent* aContent,
nsLinkVerb aVerb,
nsIURI* aURI,
const PRUnichar* aTargetSpec,
nsIInputStream* aPostDataStream = 0,
nsIInputStream* aHeadersDataStream = 0) = 0;
/**
* Process a click on a link.
*
* Works the same as OnLinkClick() except it happens immediately rather than
* through an event.
*
* @param aContent the content for the frame that generated the trigger
* @param aVerb the verb to use when the link is triggered
* @param aURI a URI obect that defines the destination for the link
* @param aTargetSpec indicates where the link is targeted (may be an empty
* string)
* @param aPostDataStream the POST data to send
* @param aHeadersDataStream ???
* @param aDocShell (out-param) the DocShell that the request was opened on
* @param aRequest the request that was opened
*/
NS_IMETHOD OnLinkClickSync(nsIContent* aContent,
nsLinkVerb aVerb,
nsIURI* aURI,
const PRUnichar* aTargetSpec,
nsIInputStream* aPostDataStream = 0,
nsIInputStream* aHeadersDataStream = 0,
nsIDocShell** aDocShell = 0,
nsIRequest** aRequest = 0) = 0;
/**
* Process a mouse-over a link.
*
* @param aContent the linked content.
* @param aURI an URI object that defines the destination for the link
* @param aTargetSpec indicates where the link is targeted (it may be an empty
* string)
*/
NS_IMETHOD OnOverLink(nsIContent* aContent,
nsIURI* aURLSpec,
const PRUnichar* aTargetSpec) = 0;
/**
* Process the mouse leaving a link.
*/
NS_IMETHOD OnLeaveLink() = 0;
/**
* Get the state of a link to a given absolute URL
*/
NS_IMETHOD GetLinkState(const nsACString& aLinkURI, nsLinkState& aState) = 0;
};
#endif /* nsILinkHandler_h___ */