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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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/. */
/* DOM object holding utility CSS functions */
#include "CSS.h"
#include "mozilla/dom/BindingDeclarations.h"
#include "nsCSSParser.h"
#include "nsGlobalWindow.h"
#include "nsIDocument.h"
#include "nsIURI.h"
namespace mozilla {
namespace dom {
struct SupportsParsingInfo
{
nsIURI* mDocURI;
nsIURI* mBaseURI;
nsIPrincipal* mPrincipal;
};
static nsresult
GetParsingInfo(nsISupports* aGlobal,
SupportsParsingInfo& aInfo)
{
if (!aGlobal) {
return NS_ERROR_FAILURE;
}
nsGlobalWindow* win = nsGlobalWindow::FromSupports(aGlobal);
nsCOMPtr<nsIDocument> doc = win->GetDoc();
if (!doc) {
return NS_ERROR_FAILURE;
}
aInfo.mDocURI = nsCOMPtr<nsIURI>(doc->GetDocumentURI());
aInfo.mBaseURI = nsCOMPtr<nsIURI>(doc->GetBaseURI());
aInfo.mPrincipal = win->GetPrincipal();
return NS_OK;
}
/* static */ bool
CSS::Supports(const GlobalObject& aGlobal,
const nsAString& aProperty,
const nsAString& aValue,
ErrorResult& aRv)
{
nsCSSParser parser;
SupportsParsingInfo info;
nsresult rv = GetParsingInfo(aGlobal.Get(), info);
if (NS_FAILED(rv)) {
aRv.Throw(rv);
return false;
}
return parser.EvaluateSupportsDeclaration(aProperty, aValue, info.mDocURI,
info.mBaseURI, info.mPrincipal);
}
/* static */ bool
CSS::Supports(const GlobalObject& aGlobal,
const nsAString& aCondition,
ErrorResult& aRv)
{
nsCSSParser parser;
SupportsParsingInfo info;
nsresult rv = GetParsingInfo(aGlobal.Get(), info);
if (NS_FAILED(rv)) {
aRv.Throw(rv);
return false;
}
return parser.EvaluateSupportsCondition(aCondition, info.mDocURI,
info.mBaseURI, info.mPrincipal);
}
} // dom
} // mozilla
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