mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
114 lines
3.3 KiB
C++
114 lines
3.3 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
|
|
|
|
#ifndef nsIJSEventListener_h__
|
|
#define nsIJSEventListener_h__
|
|
|
|
#include "nsIScriptContext.h"
|
|
#include "jsapi.h"
|
|
#include "xpcpublic.h"
|
|
#include "nsIDOMEventListener.h"
|
|
|
|
class nsIAtom;
|
|
|
|
#define NS_IJSEVENTLISTENER_IID \
|
|
{ 0x92f9212b, 0xa6aa, 0x4867, \
|
|
{ 0x93, 0x8a, 0x56, 0xbe, 0x17, 0x67, 0x4f, 0xd4 } }
|
|
|
|
// Implemented by script event listeners. Used to retrieve the
|
|
// script object corresponding to the event target and the handler itself.
|
|
// (Note this interface is now used to store script objects for all
|
|
// script languages, so is no longer JS specific)
|
|
//
|
|
// Note, mTarget is a raw pointer and the owner of the nsIJSEventListener object
|
|
// is expected to call Disconnect()!
|
|
class nsIJSEventListener : public nsIDOMEventListener
|
|
{
|
|
public:
|
|
NS_DECLARE_STATIC_IID_ACCESSOR(NS_IJSEVENTLISTENER_IID)
|
|
|
|
nsIJSEventListener(nsIScriptContext* aContext, JSObject* aScopeObject,
|
|
nsISupports *aTarget, JSObject *aHandler)
|
|
: mContext(aContext), mScopeObject(aScopeObject), mHandler(aHandler)
|
|
{
|
|
nsCOMPtr<nsISupports> base = do_QueryInterface(aTarget);
|
|
mTarget = base.get();
|
|
}
|
|
|
|
nsIScriptContext *GetEventContext() const
|
|
{
|
|
return mContext;
|
|
}
|
|
|
|
nsISupports *GetEventTarget() const
|
|
{
|
|
return mTarget;
|
|
}
|
|
|
|
void Disconnect()
|
|
{
|
|
mTarget = nullptr;
|
|
}
|
|
|
|
JSObject* GetEventScope() const
|
|
{
|
|
return xpc_UnmarkGrayObject(mScopeObject);
|
|
}
|
|
|
|
JSObject *GetHandler() const
|
|
{
|
|
return xpc_UnmarkGrayObject(mHandler);
|
|
}
|
|
|
|
// Set a handler for this event listener. Must not be called if
|
|
// there is already a handler! The handler must already be bound to
|
|
// the right target.
|
|
virtual void SetHandler(JSObject *aHandler) = 0;
|
|
|
|
// Among the sub-classes that inherit (directly or indirectly) from nsINode,
|
|
// measurement of the following members may be added later if DMD finds it is
|
|
// worthwhile:
|
|
// - nsIJSEventListener: mEventName
|
|
//
|
|
virtual size_t SizeOfExcludingThis(nsMallocSizeOfFun aMallocSizeOf) const
|
|
{
|
|
return 0;
|
|
|
|
// Measurement of the following members may be added later if DMD finds it
|
|
// is worthwhile:
|
|
// - mContext
|
|
// - mTarget
|
|
//
|
|
// The following members are not measured:
|
|
// - mScopeObject, mHandler: because they're measured by the JS memory
|
|
// reporters
|
|
}
|
|
|
|
virtual size_t SizeOfIncludingThis(nsMallocSizeOfFun aMallocSizeOf) const
|
|
{
|
|
return aMallocSizeOf(this) + SizeOfExcludingThis(aMallocSizeOf);
|
|
}
|
|
|
|
protected:
|
|
virtual ~nsIJSEventListener()
|
|
{
|
|
NS_ASSERTION(!mTarget, "Should have called Disconnect()!");
|
|
}
|
|
nsCOMPtr<nsIScriptContext> mContext;
|
|
JSObject* mScopeObject;
|
|
nsISupports* mTarget;
|
|
JSObject *mHandler;
|
|
};
|
|
|
|
NS_DEFINE_STATIC_IID_ACCESSOR(nsIJSEventListener, NS_IJSEVENTLISTENER_IID)
|
|
|
|
/* factory function. aHandler must already be bound to aTarget */
|
|
nsresult NS_NewJSEventListener(nsIScriptContext *aContext,
|
|
JSObject* aScopeObject, nsISupports* aTarget,
|
|
nsIAtom* aType, JSObject* aHandler,
|
|
nsIJSEventListener **aReturn);
|
|
|
|
#endif // nsIJSEventListener_h__
|