1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/layout/style/CSS.cpp Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,98 @@
1.4 +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
1.5 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.8 +
1.9 +/* DOM object holding utility CSS functions */
1.10 +
1.11 +#include "CSS.h"
1.12 +
1.13 +#include "mozilla/dom/BindingDeclarations.h"
1.14 +#include "nsCSSParser.h"
1.15 +#include "nsGlobalWindow.h"
1.16 +#include "nsIDocument.h"
1.17 +#include "nsIURI.h"
1.18 +#include "nsStyleUtil.h"
1.19 +
1.20 +namespace mozilla {
1.21 +namespace dom {
1.22 +
1.23 +struct SupportsParsingInfo
1.24 +{
1.25 + nsIURI* mDocURI;
1.26 + nsIURI* mBaseURI;
1.27 + nsIPrincipal* mPrincipal;
1.28 +};
1.29 +
1.30 +static nsresult
1.31 +GetParsingInfo(nsISupports* aGlobal,
1.32 + SupportsParsingInfo& aInfo)
1.33 +{
1.34 + if (!aGlobal) {
1.35 + return NS_ERROR_FAILURE;
1.36 + }
1.37 +
1.38 + nsGlobalWindow* win = nsGlobalWindow::FromSupports(aGlobal);
1.39 + nsCOMPtr<nsIDocument> doc = win->GetDoc();
1.40 + if (!doc) {
1.41 + return NS_ERROR_FAILURE;
1.42 + }
1.43 +
1.44 + aInfo.mDocURI = nsCOMPtr<nsIURI>(doc->GetDocumentURI());
1.45 + aInfo.mBaseURI = nsCOMPtr<nsIURI>(doc->GetBaseURI());
1.46 + aInfo.mPrincipal = win->GetPrincipal();
1.47 + return NS_OK;
1.48 +}
1.49 +
1.50 +/* static */ bool
1.51 +CSS::Supports(const GlobalObject& aGlobal,
1.52 + const nsAString& aProperty,
1.53 + const nsAString& aValue,
1.54 + ErrorResult& aRv)
1.55 +{
1.56 + nsCSSParser parser;
1.57 + SupportsParsingInfo info;
1.58 +
1.59 + nsresult rv = GetParsingInfo(aGlobal.GetAsSupports(), info);
1.60 + if (NS_FAILED(rv)) {
1.61 + aRv.Throw(rv);
1.62 + return false;
1.63 + }
1.64 +
1.65 + return parser.EvaluateSupportsDeclaration(aProperty, aValue, info.mDocURI,
1.66 + info.mBaseURI, info.mPrincipal);
1.67 +}
1.68 +
1.69 +/* static */ bool
1.70 +CSS::Supports(const GlobalObject& aGlobal,
1.71 + const nsAString& aCondition,
1.72 + ErrorResult& aRv)
1.73 +{
1.74 + nsCSSParser parser;
1.75 + SupportsParsingInfo info;
1.76 +
1.77 + nsresult rv = GetParsingInfo(aGlobal.GetAsSupports(), info);
1.78 + if (NS_FAILED(rv)) {
1.79 + aRv.Throw(rv);
1.80 + return false;
1.81 + }
1.82 +
1.83 + return parser.EvaluateSupportsCondition(aCondition, info.mDocURI,
1.84 + info.mBaseURI, info.mPrincipal);
1.85 +}
1.86 +
1.87 +/* static */ void
1.88 +CSS::Escape(const GlobalObject& aGlobal,
1.89 + const nsAString& aIdent,
1.90 + nsAString& aReturn,
1.91 + ErrorResult& aRv)
1.92 +{
1.93 + bool success = nsStyleUtil::AppendEscapedCSSIdent(aIdent, aReturn);
1.94 +
1.95 + if (!success) {
1.96 + aRv.Throw(NS_ERROR_DOM_INVALID_CHARACTER_ERR);
1.97 + }
1.98 +}
1.99 +
1.100 +} // dom
1.101 +} // mozilla
