gecko-dev/parser/html/nsHtml5SVGLoadDispatcher.cpp

/* ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
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 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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 * License.
 *
 * The Original Code is Mozilla Communicator client code.
 *
 * The Initial Developer of the Original Code is
 * Netscape Communications Corporation.
 * Portions created by the Initial Developer are Copyright (C) 1998
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *   Pierre Phaneuf <pp@ludusdesign.com>
 *   Henri Sivonen <hsivonen@iki.fi>
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 * either of the GNU General Public License Version 2 or later (the "GPL"),
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#include "nsHtml5SVGLoadDispatcher.h"
#include "nsPresContext.h"
#include "nsEventDispatcher.h"
#include "nsIPresShell.h"
#include "nsGUIEvent.h"

nsHtml5SVGLoadDispatcher::nsHtml5SVGLoadDispatcher(nsIContent* aElement)
  : mElement(aElement)
  , mDocument(mElement->OwnerDoc())
{
  mDocument->BlockOnload();
}

NS_IMETHODIMP
nsHtml5SVGLoadDispatcher::Run()
{
  nsEvent event(true, NS_SVG_LOAD);
  event.eventStructType = NS_SVG_EVENT;
  event.flags |= NS_EVENT_FLAG_CANT_BUBBLE;
  // Do we care about forcing presshell creation if it hasn't happened yet?
  // That is, should this code flush or something?  Does it really matter?
  // For that matter, do we really want to try getting the prescontext?
  // Does this event ever want one?
  nsRefPtr<nsPresContext> ctx;
  nsCOMPtr<nsIPresShell> shell = mElement->OwnerDoc()->GetShell();
  if (shell) {
    ctx = shell->GetPresContext();
  }
  nsEventDispatcher::Dispatch(mElement, ctx, &event);
  // Unblocking onload on the same document that it was blocked even if
  // the element has moved between docs since blocking.
  mDocument->UnblockOnload(false);
  return NS_OK;
}