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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* 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 nsAutoCopyListener_h_
#define nsAutoCopyListener_h_
#include "nsISelectionListener.h"
#include "nsISelectionPrivate.h"
#include "mozilla/Attributes.h"
class nsAutoCopyListener final : public nsISelectionListener
{
public:
NS_DECL_ISUPPORTS
NS_DECL_NSISELECTIONLISTENER
explicit nsAutoCopyListener(int16_t aClipboardID)
: mCachedClipboard(aClipboardID)
{}
void Listen(nsISelectionPrivate *aSelection)
{
NS_ASSERTION(aSelection, "Null selection passed to Listen()");
aSelection->AddSelectionListener(this);
}
static nsAutoCopyListener* GetInstance(int16_t aClipboardID)
{
if (!sInstance) {
sInstance = new nsAutoCopyListener(aClipboardID);
NS_ADDREF(sInstance);
}
return sInstance;
}
static void Shutdown()
{
NS_IF_RELEASE(sInstance);
}
private:
~nsAutoCopyListener() {}
static nsAutoCopyListener* sInstance;
int16_t mCachedClipboard;
};
#endif
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