pjs/dom/public/nsIScriptObjectOwner.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.org 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 nsIScriptObjectOwner_h__
#define nsIScriptObjectOwner_h__
#include "nsISupports.h"
#include "nsIScriptContext.h"
#include "nsAReadableString.h"
#define NS_ISCRIPTOBJECTOWNER_IID \
{ /* 8f6bca7e-ce42-11d1-b724-00600891d8c9 */ \
0x8f6bca7e, 0xce42, 0x11d1, \
{0xb7, 0x24, 0x00, 0x60, 0x08, 0x91, 0xd8, 0xc9} } \
/**
* Creates a link between the script object and its native implementation
*<P>
* Every object that wants to be exposed in a script environment should
* implement this interface. This interface should guarantee that the same
* script object is returned in the context of the same script.
* <P><I>It does have a bit too much java script information now, that
* should be removed in a short time. Ideally this interface will be
* language neutral</I>
*/
class nsIScriptObjectOwner : public nsISupports {
public:
NS_DEFINE_STATIC_IID_ACCESSOR(NS_ISCRIPTOBJECTOWNER_IID)
/**
* Return the script object associated with this object.
* Create a script object if not present.
*
* @param aContext the context the script object has to be created in
* @param aScriptObject on return will contain the script object
*
* @return nsresult NS_OK if the script object is successfully returned
*
**/
NS_IMETHOD GetScriptObject(nsIScriptContext *aContext, void** aScriptObject) = 0;
/**
* Set the script object associated with this object.
* Often used to either reset the object to null or initially
* set it in cases where the object comes before the owner.
*
* @param aScriptObject the script object to set
*
* @return nsresult NS_OK if the script object is successfully set
*
**/
NS_IMETHOD SetScriptObject(void* aScriptObject) = 0;
};
class nsIAtom;
#define NS_ISCRIPTEVENTHANDLEROWNER_IID \
{ /* 2ad54ae0-a839-11d3-ba97-00104ba02d3d */ \
0x2ad54ae0, 0xa839, 0x11d3, \
{0xba, 0x97, 0x00, 0x10, 0x4b, 0xa0, 0x2d, 0x3d} }
/**
* Associate a compiled event handler with its target object, which owns it
* This is an adjunct to nsIScriptObjectOwner that nsIEventListenerManager's
* implementation queries for, in order to avoid recompiling a recurrent or
* prototype-inherited event handler.
*/
class nsIScriptEventHandlerOwner : public nsISupports
{
public:
NS_DEFINE_STATIC_IID_ACCESSOR(NS_ISCRIPTEVENTHANDLEROWNER_IID)
/**
* Compile the specified event handler, and bind it to aTarget using
* aContext.
*
* @param aContext the context to use when creating event handler
* @param aTarget the object to which to bind the event handler
* @param aName the name of the handler
* @param aBody the handler script body
* @param aHandler the compiled, bound handler object
*/
NS_IMETHOD CompileEventHandler(nsIScriptContext* aContext,
void* aTarget,
nsIAtom *aName,
const nsAReadableString& aBody,
void** aHandler) = 0;
/**
* Retrieve an already-compiled event handler that can be bound to a
* target object using a script context.
*
* @param aName the name of the event handler to retrieve
* @param aHandler the compiled event handler
*/
NS_IMETHOD GetCompiledEventHandler(nsIAtom *aName, void** aHandler) = 0;
};
#endif // nsIScriptObjectOwner_h__