layout/printing/nsPrintPreviewListener.h
author Markus Stange <mstange@themasta.com>
Fri, 18 May 2018 17:36:30 -0400
changeset 421027 1d38a4cf5a4a7e54adbdb5ffa31c944e41e27e18
parent 388790 905239391e05483e8fb221378dd2092c5a0df8b7
child 448947 6f3709b3878117466168c40affa7bca0b60cf75b
permissions -rw-r--r--
Bug 1462784 - Remove EVENTS category. r=njn Categories are useful to indicate: This much % of time was spent in this category. The EVENTS category isn't a very good match for this. This category is currently only set on labels of functions that handle the processing of an event. But those functions are usually closer to the base of the stack, and the actual CPU work during the processing of an event is usually in another category closer to the top of the stack, e.g. in JS if we're running an event handler, or in LAYOUT if we're hit testing the position of the event. This changeset removes the EVENTS category and replaces all uses of it with the OTHER category. MozReview-Commit-ID: JPm5hQiBkvp

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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 nsPrintPreviewListener_h__
#define nsPrintPreviewListener_h__

// Interfaces needed to be included
#include "nsIDOMEventListener.h"
// Helper Classes
#include "nsCOMPtr.h"
#include "mozilla/Attributes.h"

namespace mozilla {
namespace dom {
class EventTarget;
} // namespace dom
} // namespace mozilla

//
// class nsPrintPreviewListener
//
// The class that listens to the chrome events and tells the embedding
// chrome to show context menus, as appropriate. Handles registering itself
// with the DOM with AddChromeListeners() and removing itself with
// RemoveChromeListeners().
//
class nsPrintPreviewListener final : public nsIDOMEventListener

{
public:
  NS_DECL_ISUPPORTS
  NS_DECL_NSIDOMEVENTLISTENER

  explicit nsPrintPreviewListener(mozilla::dom::EventTarget* aTarget);

  // Add/remove the relevant listeners, based on what interfaces
  // the embedding chrome implements.
  nsresult AddListeners();
  nsresult RemoveListeners();

private:
  ~nsPrintPreviewListener();

  nsCOMPtr<mozilla::dom::EventTarget> mEventTarget;

}; // class nsPrintPreviewListener



#endif /* nsPrintPreviewListener_h__ */