108 lines
2.8 KiB
C++
108 lines
2.8 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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/* DOM object holding utility CSS functions */
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#include "CSS.h"
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#include "mozilla/dom/BindingDeclarations.h"
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#include "mozilla/ServoBindings.h"
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#include "nsCSSParser.h"
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#include "nsGlobalWindow.h"
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#include "nsIDocument.h"
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#include "nsIURI.h"
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#include "nsStyleUtil.h"
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#include "xpcpublic.h"
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namespace mozilla {
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namespace dom {
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struct SupportsParsingInfo
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{
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nsIURI* mDocURI;
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nsIURI* mBaseURI;
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nsIPrincipal* mPrincipal;
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StyleBackendType mStyleBackendType;
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};
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static nsresult
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GetParsingInfo(const GlobalObject& aGlobal,
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SupportsParsingInfo& aInfo)
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{
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nsGlobalWindow* win = xpc::WindowOrNull(aGlobal.Get());
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if (!win) {
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return NS_ERROR_FAILURE;
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}
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nsCOMPtr<nsIDocument> doc = win->GetDoc();
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if (!doc) {
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return NS_ERROR_FAILURE;
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}
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aInfo.mDocURI = nsCOMPtr<nsIURI>(doc->GetDocumentURI()).get();
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aInfo.mBaseURI = nsCOMPtr<nsIURI>(doc->GetBaseURI()).get();
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aInfo.mPrincipal = win->GetPrincipal();
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aInfo.mStyleBackendType = doc->GetStyleBackendType();
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return NS_OK;
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}
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/* static */ bool
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CSS::Supports(const GlobalObject& aGlobal,
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const nsAString& aProperty,
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const nsAString& aValue,
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ErrorResult& aRv)
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{
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SupportsParsingInfo info;
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nsresult rv = GetParsingInfo(aGlobal, info);
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if (NS_FAILED(rv)) {
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aRv.Throw(rv);
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return false;
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}
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if (info.mStyleBackendType == StyleBackendType::Servo) {
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NS_ConvertUTF16toUTF8 property(aProperty);
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NS_ConvertUTF16toUTF8 value(aValue);
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return Servo_CSSSupports(&property, &value);
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}
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nsCSSParser parser;
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return parser.EvaluateSupportsDeclaration(aProperty, aValue, info.mDocURI,
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info.mBaseURI, info.mPrincipal);
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}
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/* static */ bool
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CSS::Supports(const GlobalObject& aGlobal,
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const nsAString& aCondition,
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ErrorResult& aRv)
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{
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SupportsParsingInfo info;
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nsresult rv = GetParsingInfo(aGlobal, info);
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if (NS_FAILED(rv)) {
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aRv.Throw(rv);
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return false;
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}
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if (info.mStyleBackendType == StyleBackendType::Servo) {
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MOZ_CRASH("stylo: CSS.supports() with arguments is not yet implemented");
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}
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nsCSSParser parser;
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return parser.EvaluateSupportsCondition(aCondition, info.mDocURI,
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info.mBaseURI, info.mPrincipal);
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}
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/* static */ void
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CSS::Escape(const GlobalObject& aGlobal,
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const nsAString& aIdent,
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nsAString& aReturn)
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{
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nsStyleUtil::AppendEscapedCSSIdent(aIdent, aReturn);
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}
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} // namespace dom
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} // namespace mozilla
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