parser/html/nsHtml5SVGLoadDispatcher.cpp

   1 /* ***** BEGIN LICENSE BLOCK *****
   2  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
   3  *
   4  * The contents of this file are subject to the Mozilla Public License Version
   5  * 1.1 (the "License"); you may not use this file except in compliance with
   6  * the License. You may obtain a copy of the License at
   7  * http://www.mozilla.org/MPL/
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   9  * Software distributed under the License is distributed on an "AS IS" basis,
  10  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
  11  * for the specific language governing rights and limitations under the
  12  * License.
  13  *
  14  * The Original Code is Mozilla Communicator client code.
  15  *
  16  * The Initial Developer of the Original Code is
  17  * Netscape Communications Corporation.
  18  * Portions created by the Initial Developer are Copyright (C) 1998
  19  * the Initial Developer. All Rights Reserved.
  20  *
  21  * Contributor(s):
  22  *   Pierre Phaneuf <pp@ludusdesign.com>
  23  *   Henri Sivonen <hsivonen@iki.fi>
  24  *
  25  * Alternatively, the contents of this file may be used under the terms of
  26  * either of the GNU General Public License Version 2 or later (the "GPL"),
  27  * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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  35  * the terms of any one of the MPL, the GPL or the LGPL.
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  37  * ***** END LICENSE BLOCK ***** */
  38
  39 #include "nsHtml5SVGLoadDispatcher.h"
  40 #include "nsPresContext.h"
  41 #include "nsEventDispatcher.h"
  42 #include "nsIPresShell.h"
  43 #include "nsGUIEvent.h"
  44
  45 nsHtml5SVGLoadDispatcher::nsHtml5SVGLoadDispatcher(nsIContent* aElement)
  46   : mElement(aElement)
  47   , mDocument(mElement->GetOwnerDoc())
  48 {
  49   mDocument->BlockOnload();
  50 }
  51
  52 NS_IMETHODIMP
  53 nsHtml5SVGLoadDispatcher::Run()
  54 {
  55   nsEvent event(PR_TRUE, NS_SVG_LOAD);
  56   event.eventStructType = NS_SVG_EVENT;
  57   event.flags |= NS_EVENT_FLAG_CANT_BUBBLE;
  58   // Do we care about forcing presshell creation if it hasn't happened yet?
  59   // That is, should this code flush or something?  Does it really matter?
  60   // For that matter, do we really want to try getting the prescontext?
  61   // Does this event ever want one?
  62   nsRefPtr<nsPresContext> ctx;
  63   nsCOMPtr<nsIPresShell> shell = mElement->GetOwnerDoc()->GetShell();
  64   if (shell) {
  65     ctx = shell->GetPresContext();
  66   }
  67   nsEventDispatcher::Dispatch(mElement, ctx, &event);
  68   // Unblocking onload on the same document that it was blocked even if
  69   // the element has moved between docs since blocking.
  70   mDocument->UnblockOnload(PR_FALSE);
  71   return NS_OK;
  72 }