pjs/webshell/public/nsILinkHandler.h

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* 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 Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All
* Rights Reserved.
*
* Contributor(s):
*/
#ifndef nsILinkHandler_h___
#define nsILinkHandler_h___
#include "nsISupports.h"
class nsIInputStream;
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_OutOfDate = 3, // visited, but the cache is stale
eLinkState_NotLink = 4
};
// 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. aContent is the content for the frame
* that generated the trigger. aURLSpec is an absolute url spec that
* defines the destination for the link. aTargetSpec indicates where
* the link is targeted (it may be an empty string). aVerb indicates
* the verb to use when the link is triggered.
*/
NS_IMETHOD OnLinkClick(nsIContent* aContent,
nsLinkVerb aVerb,
const PRUnichar* aURLSpec,
const PRUnichar* aTargetSpec,
nsIInputStream* aPostDataStream = 0,
nsIInputStream* aHeadersDataStream = 0) = 0;
/**
* Process a mouse-over a link. aContent is the
* linked content. aURLSpec is an absolute url spec that defines the
* destination for the link. aTargetSpec indicates where the link is
* targeted (it may be an empty string).
*/
NS_IMETHOD OnOverLink(nsIContent* aContent,
const PRUnichar* aURLSpec,
const PRUnichar* aTargetSpec) = 0;
/**
* Get the state of a link to a given absolute URL
*/
NS_IMETHOD GetLinkState(const char* aLinkURI, nsLinkState& aState) = 0;
};
#endif /* nsILinkHandler_h___ */