gecko-dev/dom/svg/nsSVGFeatures.cpp

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C++
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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
2012-05-21 15:12:37 +04:00
/* 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/. */
/**
* This file contains code to help implement the Conditional Processing
* section of the SVG specification (i.e. the <switch> element and the
* requiredFeatures, requiredExtensions and systemLanguage attributes).
*
* http://www.w3.org/TR/SVG11/struct.html#ConditionalProcessing
*/
#include "nsSVGFeatures.h"
#include "nsIContent.h"
#include "nsIDocument.h"
#include "mozilla/Preferences.h"
using namespace mozilla;
/*static*/ bool
nsSVGFeatures::HasFeature(nsISupports* aObject, const nsAString& aFeature)
{
if (aFeature.EqualsLiteral("http://www.w3.org/TR/SVG11/feature#Script")) {
nsCOMPtr<nsIContent> content(do_QueryInterface(aObject));
if (content) {
nsIDocument* doc = content->GetUncomposedDoc();
if (doc && doc->IsResourceDoc()) {
// no scripting in SVG images or external resource documents
return false;
}
}
return Preferences::GetBool("javascript.enabled", false);
}
#define SVG_SUPPORTED_FEATURE(str) if (aFeature.EqualsLiteral(str)) return true;
#define SVG_UNSUPPORTED_FEATURE(str)
#include "nsSVGFeaturesList.h"
#undef SVG_SUPPORTED_FEATURE
#undef SVG_UNSUPPORTED_FEATURE
return false;
}
/*static*/ bool
nsSVGFeatures::HasExtension(const nsAString& aExtension)
{
#define SVG_SUPPORTED_EXTENSION(str) if (aExtension.EqualsLiteral(str)) return true;
SVG_SUPPORTED_EXTENSION("http://www.w3.org/1999/xhtml")
SVG_SUPPORTED_EXTENSION("http://www.w3.org/1998/Math/MathML")
#undef SVG_SUPPORTED_EXTENSION
return false;
}