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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 "mozilla/ServoBindings.h"
#include "nsCSSParser.h"
#include "nsGlobalWindow.h"
#include "nsIDocument.h"
#include "nsIURI.h"
#include "nsStyleUtil.h"
#include "xpcpublic.h"
namespace mozilla {
namespace dom {
struct SupportsParsingInfo
{
nsIURI* mDocURI;
nsIURI* mBaseURI;
nsIPrincipal* mPrincipal;
StyleBackendType mStyleBackendType;
};
static nsresult
GetParsingInfo(const GlobalObject& aGlobal,
SupportsParsingInfo& aInfo)
{
nsGlobalWindow* win = xpc::WindowOrNull(aGlobal.Get());
if (!win) {
return NS_ERROR_FAILURE;
}
nsCOMPtr<nsIDocument> doc = win->GetDoc();
if (!doc) {
return NS_ERROR_FAILURE;
}
aInfo.mDocURI = nsCOMPtr<nsIURI>(doc->GetDocumentURI()).get();
aInfo.mBaseURI = nsCOMPtr<nsIURI>(doc->GetBaseURI()).get();
aInfo.mPrincipal = win->GetPrincipal();
aInfo.mStyleBackendType = doc->GetStyleBackendType();
return NS_OK;
}
/* static */ bool
CSS::Supports(const GlobalObject& aGlobal,
const nsAString& aProperty,
const nsAString& aValue,
ErrorResult& aRv)
{
SupportsParsingInfo info;
nsresult rv = GetParsingInfo(aGlobal, info);
if (NS_FAILED(rv)) {
aRv.Throw(rv);
return false;
}
if (info.mStyleBackendType == StyleBackendType::Servo) {
NS_ConvertUTF16toUTF8 property(aProperty);
NS_ConvertUTF16toUTF8 value(aValue);
return Servo_CSSSupports(&property, &value);
}
nsCSSParser parser;
return parser.EvaluateSupportsDeclaration(aProperty, aValue, info.mDocURI,
info.mBaseURI, info.mPrincipal);
}
/* static */ bool
CSS::Supports(const GlobalObject& aGlobal,
const nsAString& aCondition,
ErrorResult& aRv)
{
SupportsParsingInfo info;
nsresult rv = GetParsingInfo(aGlobal, info);
if (NS_FAILED(rv)) {
aRv.Throw(rv);
return false;
}
if (info.mStyleBackendType == StyleBackendType::Servo) {
MOZ_CRASH("stylo: CSS.supports() with arguments is not yet implemented");
}
nsCSSParser parser;
return parser.EvaluateSupportsCondition(aCondition, info.mDocURI,
info.mBaseURI, info.mPrincipal);
}
/* static */ void
CSS::Escape(const GlobalObject& aGlobal,
const nsAString& aIdent,
nsAString& aReturn)
{
nsStyleUtil::AppendEscapedCSSIdent(aIdent, aReturn);
}
} // namespace dom
} // namespace mozilla
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