gecko-dev/dom/base/nsIJSEventListener.h

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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* The Original Code is mozilla.org code.
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#ifndef nsIJSEventListener_h__
#define nsIJSEventListener_h__
#include "nsIScriptContext.h"
#include "jsapi.h"
#include "nsIDOMEventListener.h"
class nsIScriptObjectOwner;
class nsIAtom;
#define NS_IJSEVENTLISTENER_IID \
{ 0x468406d2, 0xf6aa, 0x404f, \
{ 0x92, 0xa1, 0x53, 0xd1, 0x5f, 0x6e, 0x5e, 0x19 } }
// 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)
class nsIJSEventListener : public nsIDOMEventListener
{
public:
NS_DECLARE_STATIC_IID_ACCESSOR(NS_IJSEVENTLISTENER_IID)
nsIJSEventListener(nsIScriptContext *aContext, void *aScopeObject,
nsISupports *aTarget, void *aHandler)
: mContext(aContext), mScopeObject(aScopeObject),
mTarget(do_QueryInterface(aTarget)), mHandler(aHandler)
{
}
nsIScriptContext *GetEventContext() const
{
return mContext;
}
nsISupports *GetEventTarget() const
{
return mTarget;
}
void *GetEventScope() const
{
return mScopeObject;
}
void *GetHandler() const
{
return 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(void *aHandler) = 0;
virtual PRInt64 SizeOf() const = 0;
protected:
virtual ~nsIJSEventListener()
{
}
nsCOMPtr<nsIScriptContext> mContext;
void *mScopeObject;
nsCOMPtr<nsISupports> mTarget;
void *mHandler;
};
NS_DEFINE_STATIC_IID_ACCESSOR(nsIJSEventListener, NS_IJSEVENTLISTENER_IID)
/* factory function. aHandler must already be bound to aTarget */
nsresult NS_NewJSEventListener(nsIScriptContext *aContext,
void *aScopeObject, nsISupports *aTarget,
nsIAtom* aType, void *aHandler,
nsIDOMEventListener **aReturn);
#endif // nsIJSEventListener_h__