зеркало из https://github.com/mozilla/pjs.git
1402 строки
54 KiB
C++
1402 строки
54 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Daniel Glazman <glazman@netscape.com>
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* Mats Palmgren <mats.palmgren@bredband.net>
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* Jonathon Jongsma <jonathon.jongsma@collabora.co.uk>, Collabora Ltd.
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* L. David Baron <dbaron@dbaron.org>, Mozilla Corporation
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either of the GNU General Public License Version 2 or later (the "GPL"),
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* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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/*
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* representation of a declaration block (or style attribute) in a CSS
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* stylesheet
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*/
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#include "nscore.h"
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#include "prlog.h"
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#include "mozilla/css/Declaration.h"
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#include "nsString.h"
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#include "nsIAtom.h"
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#include "nsUnicharUtils.h"
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#include "nsReadableUtils.h"
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#include "nsCRT.h"
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#include "nsCSSProps.h"
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#include "nsFont.h"
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#include "nsReadableUtils.h"
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#include "nsStyleUtil.h"
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#include "nsStyleConsts.h"
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#include "nsCOMPtr.h"
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#include "CSSCalc.h"
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namespace mozilla {
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namespace css {
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Declaration::Declaration()
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{
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// check that we can fit all the CSS properties into a PRUint8
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// for the mOrder array - if not, might need to use PRUint16!
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PR_STATIC_ASSERT(eCSSProperty_COUNT_no_shorthands - 1 <= PR_UINT8_MAX);
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MOZ_COUNT_CTOR(mozilla::css::Declaration);
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}
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Declaration::Declaration(const Declaration& aCopy)
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: mOrder(aCopy.mOrder),
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mData(aCopy.mData ? aCopy.mData->Clone()
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: already_AddRefed<nsCSSCompressedDataBlock>(nsnull)),
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mImportantData(aCopy.mImportantData
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? aCopy.mImportantData->Clone()
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: already_AddRefed<nsCSSCompressedDataBlock>(nsnull))
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{
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MOZ_COUNT_CTOR(mozilla::css::Declaration);
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}
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Declaration::~Declaration()
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{
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MOZ_COUNT_DTOR(mozilla::css::Declaration);
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}
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nsresult
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Declaration::ValueAppended(nsCSSProperty aProperty)
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{
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NS_ABORT_IF_FALSE(!nsCSSProps::IsShorthand(aProperty),
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"shorthands forbidden");
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// order IS important for CSS, so remove and add to the end
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mOrder.RemoveElement(aProperty);
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mOrder.AppendElement(aProperty);
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return NS_OK;
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}
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nsresult
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Declaration::RemoveProperty(nsCSSProperty aProperty)
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{
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nsCSSExpandedDataBlock data;
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ExpandTo(&data);
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NS_ASSERTION(!mData && !mImportantData, "Expand didn't null things out");
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if (nsCSSProps::IsShorthand(aProperty)) {
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CSSPROPS_FOR_SHORTHAND_SUBPROPERTIES(p, aProperty) {
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data.ClearProperty(*p);
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mOrder.RemoveElement(*p);
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}
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} else {
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data.ClearProperty(aProperty);
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mOrder.RemoveElement(aProperty);
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}
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CompressFrom(&data);
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return NS_OK;
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}
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PRBool Declaration::AppendValueToString(nsCSSProperty aProperty,
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nsAString& aResult) const
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{
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nsCSSCompressedDataBlock *data = GetValueIsImportant(aProperty)
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? mImportantData : mData;
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const void *storage = data->StorageFor(aProperty);
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return Declaration::AppendStorageToString(aProperty, storage, aResult);
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}
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/* static */ PRBool
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Declaration::AppendStorageToString(nsCSSProperty aProperty,
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const void* aStorage,
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nsAString& aResult)
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{
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if (aStorage) {
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switch (nsCSSProps::kTypeTable[aProperty]) {
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case eCSSType_Value: {
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const nsCSSValue *val = static_cast<const nsCSSValue*>(aStorage);
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AppendCSSValueToString(aProperty, *val, aResult);
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} break;
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case eCSSType_Rect: {
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const nsCSSRect *rect = static_cast<const nsCSSRect*>(aStorage);
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const nsCSSUnit topUnit = rect->mTop.GetUnit();
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if (topUnit == eCSSUnit_Inherit ||
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topUnit == eCSSUnit_Initial ||
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topUnit == eCSSUnit_RectIsAuto) {
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NS_ASSERTION(rect->mRight.GetUnit() == topUnit &&
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rect->mBottom.GetUnit() == topUnit &&
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rect->mLeft.GetUnit() == topUnit,
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"parser should make all sides have the same unit");
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if (topUnit == eCSSUnit_RectIsAuto)
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aResult.AppendLiteral("auto");
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else
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AppendCSSValueToString(aProperty, rect->mTop, aResult);
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} else {
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aResult.AppendLiteral("rect(");
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AppendCSSValueToString(aProperty, rect->mTop, aResult);
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NS_NAMED_LITERAL_STRING(comma, ", ");
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aResult.Append(comma);
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AppendCSSValueToString(aProperty, rect->mRight, aResult);
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aResult.Append(comma);
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AppendCSSValueToString(aProperty, rect->mBottom, aResult);
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aResult.Append(comma);
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AppendCSSValueToString(aProperty, rect->mLeft, aResult);
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aResult.Append(PRUnichar(')'));
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}
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} break;
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case eCSSType_ValuePair: {
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const nsCSSValuePair *pair = static_cast<const nsCSSValuePair*>(aStorage);
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AppendCSSValueToString(aProperty, pair->mXValue, aResult);
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if (pair->mYValue != pair->mXValue ||
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((aProperty == eCSSProperty_background_position ||
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aProperty == eCSSProperty__moz_transform_origin) &&
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pair->mXValue.GetUnit() != eCSSUnit_Inherit &&
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pair->mXValue.GetUnit() != eCSSUnit_Initial) ||
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(aProperty == eCSSProperty_background_size &&
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pair->mXValue.GetUnit() != eCSSUnit_Inherit &&
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pair->mXValue.GetUnit() != eCSSUnit_Initial &&
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pair->mXValue.GetUnit() != eCSSUnit_Enumerated)) {
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// Only output a Y value if it's different from the X value,
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// or if it's a background-position value other than 'initial'
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// or 'inherit', or if it's a -moz-transform-origin value other
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// than 'initial' or 'inherit', or if it's a background-size
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// value other than 'initial' or 'inherit' or 'contain' or 'cover'.
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aResult.Append(PRUnichar(' '));
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AppendCSSValueToString(aProperty, pair->mYValue, aResult);
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}
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} break;
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case eCSSType_ValueList: {
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const nsCSSValueList* val =
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*static_cast<nsCSSValueList*const*>(aStorage);
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do {
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AppendCSSValueToString(aProperty, val->mValue, aResult);
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val = val->mNext;
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if (val) {
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if (nsCSSProps::PropHasFlags(aProperty,
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CSS_PROPERTY_VALUE_LIST_USES_COMMAS))
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aResult.Append(PRUnichar(','));
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aResult.Append(PRUnichar(' '));
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}
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} while (val);
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} break;
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case eCSSType_ValuePairList: {
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const nsCSSValuePairList* item =
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*static_cast<nsCSSValuePairList*const*>(aStorage);
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do {
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NS_ASSERTION(item->mXValue.GetUnit() != eCSSUnit_Null,
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"unexpected null unit");
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AppendCSSValueToString(aProperty, item->mXValue, aResult);
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if (item->mXValue.GetUnit() != eCSSUnit_Inherit &&
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item->mXValue.GetUnit() != eCSSUnit_Initial &&
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item->mYValue.GetUnit() != eCSSUnit_Null) {
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aResult.Append(PRUnichar(' '));
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AppendCSSValueToString(aProperty, item->mYValue, aResult);
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}
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item = item->mNext;
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if (item) {
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if (nsCSSProps::PropHasFlags(aProperty,
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CSS_PROPERTY_VALUE_LIST_USES_COMMAS))
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aResult.Append(PRUnichar(','));
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aResult.Append(PRUnichar(' '));
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}
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} while (item);
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} break;
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}
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}
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return aStorage != nsnull;
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}
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struct CSSValueSerializeCalcOps {
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CSSValueSerializeCalcOps(nsCSSProperty aProperty, nsAString& aResult)
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: mProperty(aProperty),
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mResult(aResult)
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{
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}
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typedef nsCSSValue input_type;
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typedef nsCSSValue::Array input_array_type;
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static nsCSSUnit GetUnit(const input_type& aValue) {
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return aValue.GetUnit();
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}
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void Append(const char* aString)
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{
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mResult.AppendASCII(aString);
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}
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void AppendLeafValue(const input_type& aValue)
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{
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NS_ABORT_IF_FALSE(aValue.GetUnit() == eCSSUnit_Percent ||
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aValue.IsLengthUnit(), "unexpected unit");
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Declaration::AppendCSSValueToString(mProperty, aValue, mResult);
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}
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void AppendNumber(const input_type& aValue)
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{
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NS_ABORT_IF_FALSE(aValue.GetUnit() == eCSSUnit_Number, "unexpected unit");
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Declaration::AppendCSSValueToString(mProperty, aValue, mResult);
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}
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private:
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nsCSSProperty mProperty;
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nsAString &mResult;
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};
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/* static */ PRBool
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Declaration::AppendCSSValueToString(nsCSSProperty aProperty,
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const nsCSSValue& aValue,
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nsAString& aResult)
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{
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nsCSSUnit unit = aValue.GetUnit();
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if (eCSSUnit_Null == unit) {
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return PR_FALSE;
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}
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if (eCSSUnit_String <= unit && unit <= eCSSUnit_Attr) {
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if (unit == eCSSUnit_Attr) {
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aResult.AppendLiteral("attr(");
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}
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nsAutoString buffer;
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aValue.GetStringValue(buffer);
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if (unit == eCSSUnit_String) {
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nsStyleUtil::AppendEscapedCSSString(buffer, aResult);
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} else if (unit == eCSSUnit_Families) {
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// XXX We really need to do *some* escaping.
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aResult.Append(buffer);
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} else {
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nsStyleUtil::AppendEscapedCSSIdent(buffer, aResult);
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}
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}
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else if (eCSSUnit_Array <= unit && unit <= eCSSUnit_Cubic_Bezier) {
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switch (unit) {
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case eCSSUnit_Counter: aResult.AppendLiteral("counter("); break;
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case eCSSUnit_Counters: aResult.AppendLiteral("counters("); break;
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case eCSSUnit_Cubic_Bezier: aResult.AppendLiteral("cubic-bezier("); break;
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default: break;
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}
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nsCSSValue::Array *array = aValue.GetArrayValue();
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PRBool mark = PR_FALSE;
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for (size_t i = 0, i_end = array->Count(); i < i_end; ++i) {
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if (aProperty == eCSSProperty_border_image && i >= 5) {
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if (array->Item(i).GetUnit() == eCSSUnit_Null) {
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continue;
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}
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if (i == 5) {
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aResult.AppendLiteral(" /");
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}
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}
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if (mark && array->Item(i).GetUnit() != eCSSUnit_Null) {
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if (unit == eCSSUnit_Array &&
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eCSSProperty_transition_timing_function != aProperty)
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aResult.AppendLiteral(" ");
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else
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aResult.AppendLiteral(", ");
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}
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nsCSSProperty prop =
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((eCSSUnit_Counter <= unit && unit <= eCSSUnit_Counters) &&
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i == array->Count() - 1)
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? eCSSProperty_list_style_type : aProperty;
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if (AppendCSSValueToString(prop, array->Item(i), aResult)) {
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mark = PR_TRUE;
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}
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}
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if (eCSSUnit_Array == unit && aProperty == eCSSProperty_transition_timing_function) {
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aResult.AppendLiteral(")");
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}
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}
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/* Although Function is backed by an Array, we'll handle it separately
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* because it's a bit quirky.
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*/
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else if (eCSSUnit_Function == unit) {
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const nsCSSValue::Array* array = aValue.GetArrayValue();
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NS_ASSERTION(array->Count() >= 1, "Functions must have at least one element for the name.");
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/* Append the function name. */
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const nsCSSValue& functionName = array->Item(0);
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if (functionName.GetUnit() == eCSSUnit_Enumerated) {
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// We assume that the first argument is always of nsCSSKeyword type.
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const nsCSSKeyword functionId =
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static_cast<nsCSSKeyword>(functionName.GetIntValue());
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nsStyleUtil::AppendEscapedCSSIdent(
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NS_ConvertASCIItoUTF16(nsCSSKeywords::GetStringValue(functionId)),
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aResult);
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} else {
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AppendCSSValueToString(aProperty, functionName, aResult);
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}
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aResult.AppendLiteral("(");
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/* Now, step through the function contents, writing each of them as we go. */
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for (size_t index = 1; index < array->Count(); ++index) {
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AppendCSSValueToString(aProperty, array->Item(index), aResult);
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/* If we're not at the final element, append a comma. */
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if (index + 1 != array->Count())
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aResult.AppendLiteral(", ");
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}
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/* Finally, append the closing parenthesis. */
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aResult.AppendLiteral(")");
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}
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else if (aValue.IsCalcUnit()) {
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NS_ABORT_IF_FALSE(aValue.GetUnit() == eCSSUnit_Calc ||
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aValue.GetUnit() == eCSSUnit_Calc_Maximum ||
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aValue.GetUnit() == eCSSUnit_Calc_Minimum,
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"unexpected unit");
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CSSValueSerializeCalcOps ops(aProperty, aResult);
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css::SerializeCalc(aValue, ops);
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}
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else if (eCSSUnit_Integer == unit) {
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nsAutoString tmpStr;
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tmpStr.AppendInt(aValue.GetIntValue(), 10);
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aResult.Append(tmpStr);
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}
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else if (eCSSUnit_Enumerated == unit) {
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if (eCSSProperty_text_decoration == aProperty) {
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PRInt32 intValue = aValue.GetIntValue();
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if (NS_STYLE_TEXT_DECORATION_NONE == intValue) {
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AppendASCIItoUTF16(nsCSSProps::LookupPropertyValue(aProperty, intValue),
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aResult);
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} else {
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// Ignore the "override all" internal value.
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// (It doesn't have a string representation.)
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intValue &= ~NS_STYLE_TEXT_DECORATION_OVERRIDE_ALL;
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nsStyleUtil::AppendBitmaskCSSValue(
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aProperty, intValue,
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NS_STYLE_TEXT_DECORATION_UNDERLINE,
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NS_STYLE_TEXT_DECORATION_PREF_ANCHORS,
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aResult);
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}
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}
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else if (eCSSProperty_azimuth == aProperty) {
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PRInt32 intValue = aValue.GetIntValue();
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AppendASCIItoUTF16(nsCSSProps::LookupPropertyValue(aProperty, (intValue & ~NS_STYLE_AZIMUTH_BEHIND)), aResult);
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if ((NS_STYLE_AZIMUTH_BEHIND & intValue) != 0) {
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aResult.Append(PRUnichar(' '));
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AppendASCIItoUTF16(nsCSSProps::LookupPropertyValue(aProperty, NS_STYLE_AZIMUTH_BEHIND), aResult);
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}
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}
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else if (eCSSProperty_marks == aProperty) {
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PRInt32 intValue = aValue.GetIntValue();
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if (intValue == NS_STYLE_PAGE_MARKS_NONE) {
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AppendASCIItoUTF16(nsCSSProps::LookupPropertyValue(aProperty, intValue),
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aResult);
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} else {
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nsStyleUtil::AppendBitmaskCSSValue(aProperty, intValue,
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NS_STYLE_PAGE_MARKS_CROP,
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NS_STYLE_PAGE_MARKS_REGISTER,
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aResult);
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}
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}
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else {
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const nsAFlatCString& name = nsCSSProps::LookupPropertyValue(aProperty, aValue.GetIntValue());
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AppendASCIItoUTF16(name, aResult);
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}
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}
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else if (eCSSUnit_EnumColor == unit) {
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// we can lookup the property in the ColorTable and then
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// get a string mapping the name
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nsCAutoString str;
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if (nsCSSProps::GetColorName(aValue.GetIntValue(), str)){
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AppendASCIItoUTF16(str, aResult);
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} else {
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NS_NOTREACHED("bad color value");
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}
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}
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else if (eCSSUnit_Color == unit) {
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nscolor color = aValue.GetColorValue();
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if (color == NS_RGBA(0, 0, 0, 0)) {
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// Use the strictest match for 'transparent' so we do correct
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// round-tripping of all other rgba() values.
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aResult.AppendLiteral("transparent");
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} else {
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nsAutoString tmpStr;
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PRUint8 a = NS_GET_A(color);
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if (a < 255) {
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tmpStr.AppendLiteral("rgba(");
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} else {
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tmpStr.AppendLiteral("rgb(");
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}
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NS_NAMED_LITERAL_STRING(comma, ", ");
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tmpStr.AppendInt(NS_GET_R(color), 10);
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tmpStr.Append(comma);
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tmpStr.AppendInt(NS_GET_G(color), 10);
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tmpStr.Append(comma);
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tmpStr.AppendInt(NS_GET_B(color), 10);
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if (a < 255) {
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tmpStr.Append(comma);
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tmpStr.AppendFloat(nsStyleUtil::ColorComponentToFloat(a));
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}
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tmpStr.Append(PRUnichar(')'));
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aResult.Append(tmpStr);
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}
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}
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else if (eCSSUnit_URL == unit || eCSSUnit_Image == unit) {
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aResult.Append(NS_LITERAL_STRING("url("));
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nsStyleUtil::AppendEscapedCSSString(
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nsDependentString(aValue.GetOriginalURLValue()), aResult);
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aResult.Append(NS_LITERAL_STRING(")"));
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}
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else if (eCSSUnit_Percent == unit) {
|
|
nsAutoString tmpStr;
|
|
tmpStr.AppendFloat(aValue.GetPercentValue() * 100.0f);
|
|
aResult.Append(tmpStr);
|
|
}
|
|
else if (eCSSUnit_Percent < unit) { // length unit
|
|
nsAutoString tmpStr;
|
|
tmpStr.AppendFloat(aValue.GetFloatValue());
|
|
aResult.Append(tmpStr);
|
|
}
|
|
else if (eCSSUnit_Gradient == unit) {
|
|
nsCSSValueGradient* gradient = aValue.GetGradientValue();
|
|
|
|
if (gradient->mIsRepeating) {
|
|
if (gradient->mIsRadial)
|
|
aResult.AppendLiteral("-moz-repeating-radial-gradient(");
|
|
else
|
|
aResult.AppendLiteral("-moz-repeating-linear-gradient(");
|
|
} else {
|
|
if (gradient->mIsRadial)
|
|
aResult.AppendLiteral("-moz-radial-gradient(");
|
|
else
|
|
aResult.AppendLiteral("-moz-linear-gradient(");
|
|
}
|
|
|
|
if (gradient->mBgPosX.GetUnit() != eCSSUnit_None ||
|
|
gradient->mBgPosY.GetUnit() != eCSSUnit_None ||
|
|
gradient->mAngle.GetUnit() != eCSSUnit_None) {
|
|
if (gradient->mBgPosX.GetUnit() != eCSSUnit_None) {
|
|
AppendCSSValueToString(eCSSProperty_background_position,
|
|
gradient->mBgPosX, aResult);
|
|
aResult.AppendLiteral(" ");
|
|
}
|
|
if (gradient->mBgPosY.GetUnit() != eCSSUnit_None) {
|
|
AppendCSSValueToString(eCSSProperty_background_position,
|
|
gradient->mBgPosY, aResult);
|
|
aResult.AppendLiteral(" ");
|
|
}
|
|
if (gradient->mAngle.GetUnit() != eCSSUnit_None) {
|
|
AppendCSSValueToString(aProperty, gradient->mAngle, aResult);
|
|
}
|
|
aResult.AppendLiteral(", ");
|
|
}
|
|
|
|
if (gradient->mIsRadial &&
|
|
(gradient->mRadialShape.GetUnit() != eCSSUnit_None ||
|
|
gradient->mRadialSize.GetUnit() != eCSSUnit_None)) {
|
|
if (gradient->mRadialShape.GetUnit() != eCSSUnit_None) {
|
|
NS_ASSERTION(gradient->mRadialShape.GetUnit() == eCSSUnit_Enumerated,
|
|
"bad unit for radial gradient shape");
|
|
PRInt32 intValue = gradient->mRadialShape.GetIntValue();
|
|
NS_ASSERTION(intValue != NS_STYLE_GRADIENT_SHAPE_LINEAR,
|
|
"radial gradient with linear shape?!");
|
|
AppendASCIItoUTF16(nsCSSProps::ValueToKeyword(intValue,
|
|
nsCSSProps::kRadialGradientShapeKTable),
|
|
aResult);
|
|
aResult.AppendLiteral(" ");
|
|
}
|
|
|
|
if (gradient->mRadialSize.GetUnit() != eCSSUnit_None) {
|
|
NS_ASSERTION(gradient->mRadialSize.GetUnit() == eCSSUnit_Enumerated,
|
|
"bad unit for radial gradient size");
|
|
PRInt32 intValue = gradient->mRadialSize.GetIntValue();
|
|
AppendASCIItoUTF16(nsCSSProps::ValueToKeyword(intValue,
|
|
nsCSSProps::kRadialGradientSizeKTable),
|
|
aResult);
|
|
}
|
|
aResult.AppendLiteral(", ");
|
|
}
|
|
|
|
for (PRUint32 i = 0 ;;) {
|
|
AppendCSSValueToString(aProperty, gradient->mStops[i].mColor, aResult);
|
|
if (gradient->mStops[i].mLocation.GetUnit() != eCSSUnit_None) {
|
|
aResult.AppendLiteral(" ");
|
|
AppendCSSValueToString(aProperty, gradient->mStops[i].mLocation,
|
|
aResult);
|
|
}
|
|
if (++i == gradient->mStops.Length()) {
|
|
break;
|
|
}
|
|
aResult.AppendLiteral(", ");
|
|
}
|
|
|
|
aResult.AppendLiteral(")");
|
|
}
|
|
|
|
switch (unit) {
|
|
case eCSSUnit_Null: break;
|
|
case eCSSUnit_Auto: aResult.AppendLiteral("auto"); break;
|
|
case eCSSUnit_Inherit: aResult.AppendLiteral("inherit"); break;
|
|
case eCSSUnit_Initial: aResult.AppendLiteral("-moz-initial"); break;
|
|
case eCSSUnit_None: aResult.AppendLiteral("none"); break;
|
|
case eCSSUnit_Normal: aResult.AppendLiteral("normal"); break;
|
|
case eCSSUnit_System_Font: aResult.AppendLiteral("-moz-use-system-font"); break;
|
|
case eCSSUnit_All: aResult.AppendLiteral("all"); break;
|
|
case eCSSUnit_Dummy:
|
|
case eCSSUnit_DummyInherit:
|
|
case eCSSUnit_RectIsAuto:
|
|
NS_NOTREACHED("should never serialize");
|
|
break;
|
|
|
|
case eCSSUnit_String: break;
|
|
case eCSSUnit_Ident: break;
|
|
case eCSSUnit_Families: break;
|
|
case eCSSUnit_URL: break;
|
|
case eCSSUnit_Image: break;
|
|
case eCSSUnit_Array: break;
|
|
case eCSSUnit_Attr:
|
|
case eCSSUnit_Cubic_Bezier:
|
|
case eCSSUnit_Counter:
|
|
case eCSSUnit_Counters: aResult.Append(PRUnichar(')')); break;
|
|
case eCSSUnit_Local_Font: break;
|
|
case eCSSUnit_Font_Format: break;
|
|
case eCSSUnit_Function: break;
|
|
case eCSSUnit_Calc: break;
|
|
case eCSSUnit_Calc_Plus: break;
|
|
case eCSSUnit_Calc_Minus: break;
|
|
case eCSSUnit_Calc_Times_L: break;
|
|
case eCSSUnit_Calc_Times_R: break;
|
|
case eCSSUnit_Calc_Divided: break;
|
|
case eCSSUnit_Calc_Minimum: break;
|
|
case eCSSUnit_Calc_Maximum: break;
|
|
case eCSSUnit_Integer: break;
|
|
case eCSSUnit_Enumerated: break;
|
|
case eCSSUnit_EnumColor: break;
|
|
case eCSSUnit_Color: break;
|
|
case eCSSUnit_Percent: aResult.Append(PRUnichar('%')); break;
|
|
case eCSSUnit_Number: break;
|
|
case eCSSUnit_Gradient: break;
|
|
|
|
case eCSSUnit_Inch: aResult.AppendLiteral("in"); break;
|
|
case eCSSUnit_Millimeter: aResult.AppendLiteral("mm"); break;
|
|
case eCSSUnit_Centimeter: aResult.AppendLiteral("cm"); break;
|
|
case eCSSUnit_Point: aResult.AppendLiteral("pt"); break;
|
|
case eCSSUnit_Pica: aResult.AppendLiteral("pc"); break;
|
|
|
|
case eCSSUnit_EM: aResult.AppendLiteral("em"); break;
|
|
case eCSSUnit_XHeight: aResult.AppendLiteral("ex"); break;
|
|
case eCSSUnit_Char: aResult.AppendLiteral("ch"); break;
|
|
case eCSSUnit_RootEM: aResult.AppendLiteral("rem"); break;
|
|
|
|
case eCSSUnit_Pixel: aResult.AppendLiteral("px"); break;
|
|
|
|
case eCSSUnit_Degree: aResult.AppendLiteral("deg"); break;
|
|
case eCSSUnit_Grad: aResult.AppendLiteral("grad"); break;
|
|
case eCSSUnit_Radian: aResult.AppendLiteral("rad"); break;
|
|
|
|
case eCSSUnit_Hertz: aResult.AppendLiteral("Hz"); break;
|
|
case eCSSUnit_Kilohertz: aResult.AppendLiteral("kHz"); break;
|
|
|
|
case eCSSUnit_Seconds: aResult.Append(PRUnichar('s')); break;
|
|
case eCSSUnit_Milliseconds: aResult.AppendLiteral("ms"); break;
|
|
}
|
|
|
|
return PR_TRUE;
|
|
}
|
|
|
|
nsresult
|
|
Declaration::GetValue(nsCSSProperty aProperty, nsAString& aValue) const
|
|
{
|
|
aValue.Truncate(0);
|
|
|
|
// simple properties are easy.
|
|
if (!nsCSSProps::IsShorthand(aProperty)) {
|
|
AppendValueToString(aProperty, aValue);
|
|
return NS_OK;
|
|
}
|
|
|
|
// DOM Level 2 Style says (when describing CSS2Properties, although
|
|
// not CSSStyleDeclaration.getPropertyValue):
|
|
// However, if there is no shorthand declaration that could be added
|
|
// to the ruleset without changing in any way the rules already
|
|
// declared in the ruleset (i.e., by adding longhand rules that were
|
|
// previously not declared in the ruleset), then the empty string
|
|
// should be returned for the shorthand property.
|
|
// This means we need to check a number of cases:
|
|
// (1) Since a shorthand sets all sub-properties, if some of its
|
|
// subproperties were not specified, we must return the empty
|
|
// string.
|
|
// (2) Since 'inherit' and 'initial' can only be specified as the
|
|
// values for entire properties, we need to return the empty
|
|
// string if some but not all of the subproperties have one of
|
|
// those values.
|
|
// (3) Since a single value only makes sense with or without
|
|
// !important, we return the empty string if some values are
|
|
// !important and some are not.
|
|
// Since we're doing this check for 'inherit' and 'initial' up front,
|
|
// we can also simplify the property serialization code by serializing
|
|
// those values up front as well.
|
|
PRUint32 totalCount = 0, importantCount = 0,
|
|
initialCount = 0, inheritCount = 0;
|
|
CSSPROPS_FOR_SHORTHAND_SUBPROPERTIES(p, aProperty) {
|
|
if (*p == eCSSProperty__x_system_font ||
|
|
nsCSSProps::PropHasFlags(*p, CSS_PROPERTY_DIRECTIONAL_SOURCE)) {
|
|
// The system-font subproperty and the *-source properties don't count.
|
|
continue;
|
|
}
|
|
++totalCount;
|
|
const void *storage = mData->StorageFor(*p);
|
|
NS_ASSERTION(!storage || !mImportantData || !mImportantData->StorageFor(*p),
|
|
"can't be in both blocks");
|
|
if (!storage && mImportantData) {
|
|
++importantCount;
|
|
storage = mImportantData->StorageFor(*p);
|
|
}
|
|
if (!storage) {
|
|
// Case (1) above: some subproperties not specified.
|
|
return NS_OK;
|
|
}
|
|
nsCSSUnit unit;
|
|
switch (nsCSSProps::kTypeTable[*p]) {
|
|
case eCSSType_Value: {
|
|
const nsCSSValue *val = static_cast<const nsCSSValue*>(storage);
|
|
unit = val->GetUnit();
|
|
} break;
|
|
case eCSSType_Rect: {
|
|
const nsCSSRect *rect = static_cast<const nsCSSRect*>(storage);
|
|
unit = rect->mTop.GetUnit();
|
|
} break;
|
|
case eCSSType_ValuePair: {
|
|
const nsCSSValuePair *pair = static_cast<const nsCSSValuePair*>(storage);
|
|
unit = pair->mXValue.GetUnit();
|
|
} break;
|
|
case eCSSType_ValueList: {
|
|
const nsCSSValueList* item =
|
|
*static_cast<nsCSSValueList*const*>(storage);
|
|
NS_ABORT_IF_FALSE(item, "null not allowed in compressed block");
|
|
unit = item->mValue.GetUnit();
|
|
} break;
|
|
case eCSSType_ValuePairList: {
|
|
const nsCSSValuePairList* item =
|
|
*static_cast<nsCSSValuePairList*const*>(storage);
|
|
NS_ABORT_IF_FALSE(item, "null not allowed in compressed block");
|
|
unit = item->mXValue.GetUnit();
|
|
} break;
|
|
}
|
|
if (unit == eCSSUnit_Inherit) {
|
|
++inheritCount;
|
|
} else if (unit == eCSSUnit_Initial) {
|
|
++initialCount;
|
|
}
|
|
}
|
|
if (importantCount != 0 && importantCount != totalCount) {
|
|
// Case (3), no consistent importance.
|
|
return NS_OK;
|
|
}
|
|
if (initialCount == totalCount) {
|
|
// Simplify serialization below by serializing initial up-front.
|
|
AppendCSSValueToString(eCSSProperty_UNKNOWN, nsCSSValue(eCSSUnit_Initial),
|
|
aValue);
|
|
return NS_OK;
|
|
}
|
|
if (inheritCount == totalCount) {
|
|
// Simplify serialization below by serializing inherit up-front.
|
|
AppendCSSValueToString(eCSSProperty_UNKNOWN, nsCSSValue(eCSSUnit_Inherit),
|
|
aValue);
|
|
return NS_OK;
|
|
}
|
|
if (initialCount != 0 || inheritCount != 0) {
|
|
// Case (2): partially initial or inherit.
|
|
return NS_OK;
|
|
}
|
|
|
|
nsCSSCompressedDataBlock *data = importantCount ? mImportantData : mData;
|
|
switch (aProperty) {
|
|
case eCSSProperty_margin:
|
|
case eCSSProperty_padding:
|
|
case eCSSProperty_border_color:
|
|
case eCSSProperty_border_style:
|
|
case eCSSProperty_border_width: {
|
|
const nsCSSProperty* subprops =
|
|
nsCSSProps::SubpropertyEntryFor(aProperty);
|
|
NS_ASSERTION(nsCSSProps::kTypeTable[subprops[0]] == eCSSType_Value &&
|
|
nsCSSProps::kTypeTable[subprops[1]] == eCSSType_Value &&
|
|
nsCSSProps::kTypeTable[subprops[2]] == eCSSType_Value &&
|
|
nsCSSProps::kTypeTable[subprops[3]] == eCSSType_Value,
|
|
"type mismatch");
|
|
NS_ASSERTION(nsCSSProps::GetStringValue(subprops[0]).Find("-top") !=
|
|
kNotFound, "first subprop must be top");
|
|
NS_ASSERTION(nsCSSProps::GetStringValue(subprops[1]).Find("-right") !=
|
|
kNotFound, "second subprop must be right");
|
|
NS_ASSERTION(nsCSSProps::GetStringValue(subprops[2]).Find("-bottom") !=
|
|
kNotFound, "third subprop must be bottom");
|
|
NS_ASSERTION(nsCSSProps::GetStringValue(subprops[3]).Find("-left") !=
|
|
kNotFound, "fourth subprop must be left");
|
|
const nsCSSValue &topValue = *data->ValueStorageFor(subprops[0]);
|
|
const nsCSSValue &rightValue = *data->ValueStorageFor(subprops[1]);
|
|
const nsCSSValue &bottomValue = *data->ValueStorageFor(subprops[2]);
|
|
const nsCSSValue &leftValue = *data->ValueStorageFor(subprops[3]);
|
|
PRBool haveValue;
|
|
haveValue = AppendCSSValueToString(subprops[0], topValue, aValue);
|
|
NS_ASSERTION(haveValue, "should have bailed before");
|
|
if (topValue != rightValue || topValue != leftValue ||
|
|
topValue != bottomValue) {
|
|
aValue.Append(PRUnichar(' '));
|
|
haveValue = AppendCSSValueToString(subprops[1], rightValue, aValue);
|
|
NS_ASSERTION(haveValue, "should have bailed before");
|
|
if (topValue != bottomValue || rightValue != leftValue) {
|
|
aValue.Append(PRUnichar(' '));
|
|
haveValue = AppendCSSValueToString(subprops[2], bottomValue, aValue);
|
|
NS_ASSERTION(haveValue, "should have bailed before");
|
|
if (rightValue != leftValue) {
|
|
aValue.Append(PRUnichar(' '));
|
|
haveValue = AppendCSSValueToString(subprops[3], leftValue, aValue);
|
|
NS_ASSERTION(haveValue, "should have bailed before");
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
case eCSSProperty__moz_border_radius:
|
|
case eCSSProperty__moz_outline_radius: {
|
|
const nsCSSProperty* subprops =
|
|
nsCSSProps::SubpropertyEntryFor(aProperty);
|
|
NS_ASSERTION(nsCSSProps::kTypeTable[subprops[0]] == eCSSType_ValuePair &&
|
|
nsCSSProps::kTypeTable[subprops[1]] == eCSSType_ValuePair &&
|
|
nsCSSProps::kTypeTable[subprops[2]] == eCSSType_ValuePair &&
|
|
nsCSSProps::kTypeTable[subprops[3]] == eCSSType_ValuePair,
|
|
"type mismatch");
|
|
const nsCSSValuePair* vals[4] = {
|
|
data->ValuePairStorageFor(subprops[0]),
|
|
data->ValuePairStorageFor(subprops[1]),
|
|
data->ValuePairStorageFor(subprops[2]),
|
|
data->ValuePairStorageFor(subprops[3])
|
|
};
|
|
|
|
AppendCSSValueToString(aProperty, vals[0]->mXValue, aValue);
|
|
aValue.Append(PRUnichar(' '));
|
|
AppendCSSValueToString(aProperty, vals[1]->mXValue, aValue);
|
|
aValue.Append(PRUnichar(' '));
|
|
AppendCSSValueToString(aProperty, vals[2]->mXValue, aValue);
|
|
aValue.Append(PRUnichar(' '));
|
|
AppendCSSValueToString(aProperty, vals[3]->mXValue, aValue);
|
|
|
|
// For compatibility, only write a slash and the y-values
|
|
// if they're not identical to the x-values.
|
|
if (vals[0]->mXValue != vals[0]->mYValue ||
|
|
vals[1]->mXValue != vals[1]->mYValue ||
|
|
vals[2]->mXValue != vals[2]->mYValue ||
|
|
vals[3]->mXValue != vals[3]->mYValue) {
|
|
aValue.AppendLiteral(" / ");
|
|
AppendCSSValueToString(aProperty, vals[0]->mYValue, aValue);
|
|
aValue.Append(PRUnichar(' '));
|
|
AppendCSSValueToString(aProperty, vals[1]->mYValue, aValue);
|
|
aValue.Append(PRUnichar(' '));
|
|
AppendCSSValueToString(aProperty, vals[2]->mYValue, aValue);
|
|
aValue.Append(PRUnichar(' '));
|
|
AppendCSSValueToString(aProperty, vals[3]->mYValue, aValue);
|
|
}
|
|
break;
|
|
}
|
|
case eCSSProperty_border: {
|
|
const nsCSSProperty* subproptables[3] = {
|
|
nsCSSProps::SubpropertyEntryFor(eCSSProperty_border_color),
|
|
nsCSSProps::SubpropertyEntryFor(eCSSProperty_border_style),
|
|
nsCSSProps::SubpropertyEntryFor(eCSSProperty_border_width)
|
|
};
|
|
PRBool match = PR_TRUE;
|
|
for (const nsCSSProperty** subprops = subproptables,
|
|
**subprops_end = subproptables + NS_ARRAY_LENGTH(subproptables);
|
|
subprops < subprops_end; ++subprops) {
|
|
// Check only the first four subprops in each table, since the
|
|
// others are extras for dimensional box properties.
|
|
const nsCSSValue *firstSide = data->ValueStorageFor((*subprops)[0]);
|
|
for (PRInt32 side = 1; side < 4; ++side) {
|
|
const nsCSSValue *otherSide =
|
|
data->ValueStorageFor((*subprops)[side]);
|
|
if (*firstSide != *otherSide)
|
|
match = PR_FALSE;
|
|
}
|
|
}
|
|
if (!match) {
|
|
// We can't express what we have in the border shorthand
|
|
break;
|
|
}
|
|
// tweak aProperty and fall through
|
|
aProperty = eCSSProperty_border_top;
|
|
}
|
|
case eCSSProperty_border_top:
|
|
case eCSSProperty_border_right:
|
|
case eCSSProperty_border_bottom:
|
|
case eCSSProperty_border_left:
|
|
case eCSSProperty_border_start:
|
|
case eCSSProperty_border_end:
|
|
case eCSSProperty__moz_column_rule:
|
|
case eCSSProperty_outline: {
|
|
const nsCSSProperty* subprops =
|
|
nsCSSProps::SubpropertyEntryFor(aProperty);
|
|
NS_ASSERTION(nsCSSProps::kTypeTable[subprops[0]] == eCSSType_Value &&
|
|
nsCSSProps::kTypeTable[subprops[1]] == eCSSType_Value &&
|
|
nsCSSProps::kTypeTable[subprops[2]] == eCSSType_Value,
|
|
"type mismatch");
|
|
NS_ASSERTION(StringEndsWith(nsCSSProps::GetStringValue(subprops[2]),
|
|
NS_LITERAL_CSTRING("-color")) ||
|
|
StringEndsWith(nsCSSProps::GetStringValue(subprops[2]),
|
|
NS_LITERAL_CSTRING("-color-value")),
|
|
"third subprop must be the color property");
|
|
const nsCSSValue *colorValue = data->ValueStorageFor(subprops[2]);
|
|
PRBool isMozUseTextColor =
|
|
colorValue->GetUnit() == eCSSUnit_Enumerated &&
|
|
colorValue->GetIntValue() == NS_STYLE_COLOR_MOZ_USE_TEXT_COLOR;
|
|
if (!AppendValueToString(subprops[0], aValue) ||
|
|
!(aValue.Append(PRUnichar(' ')),
|
|
AppendValueToString(subprops[1], aValue)) ||
|
|
// Don't output a third value when it's -moz-use-text-color.
|
|
!(isMozUseTextColor ||
|
|
(aValue.Append(PRUnichar(' ')),
|
|
AppendValueToString(subprops[2], aValue)))) {
|
|
aValue.Truncate();
|
|
}
|
|
break;
|
|
}
|
|
case eCSSProperty_margin_left:
|
|
case eCSSProperty_margin_right:
|
|
case eCSSProperty_margin_start:
|
|
case eCSSProperty_margin_end:
|
|
case eCSSProperty_padding_left:
|
|
case eCSSProperty_padding_right:
|
|
case eCSSProperty_padding_start:
|
|
case eCSSProperty_padding_end:
|
|
case eCSSProperty_border_left_color:
|
|
case eCSSProperty_border_left_style:
|
|
case eCSSProperty_border_left_width:
|
|
case eCSSProperty_border_right_color:
|
|
case eCSSProperty_border_right_style:
|
|
case eCSSProperty_border_right_width:
|
|
case eCSSProperty_border_start_color:
|
|
case eCSSProperty_border_start_style:
|
|
case eCSSProperty_border_start_width:
|
|
case eCSSProperty_border_end_color:
|
|
case eCSSProperty_border_end_style:
|
|
case eCSSProperty_border_end_width: {
|
|
const nsCSSProperty* subprops =
|
|
nsCSSProps::SubpropertyEntryFor(aProperty);
|
|
NS_ASSERTION(subprops[3] == eCSSProperty_UNKNOWN,
|
|
"not box property with physical vs. logical cascading");
|
|
AppendValueToString(subprops[0], aValue);
|
|
break;
|
|
}
|
|
case eCSSProperty_background: {
|
|
// We know from above that all subproperties were specified.
|
|
// However, we still can't represent that in the shorthand unless
|
|
// they're all lists of the same length. So if they're different
|
|
// lengths, we need to bail out.
|
|
// We also need to bail out if an item has background-clip and
|
|
// background-origin that are different and not the default
|
|
// values. (We omit them if they're both default.)
|
|
const nsCSSValueList *image =
|
|
* data->ValueListStorageFor(eCSSProperty_background_image);
|
|
const nsCSSValueList *repeat =
|
|
* data->ValueListStorageFor(eCSSProperty_background_repeat);
|
|
const nsCSSValueList *attachment =
|
|
* data->ValueListStorageFor(eCSSProperty_background_attachment);
|
|
const nsCSSValuePairList *position =
|
|
* data->ValuePairListStorageFor(eCSSProperty_background_position);
|
|
const nsCSSValueList *clip =
|
|
* data->ValueListStorageFor(eCSSProperty_background_clip);
|
|
const nsCSSValueList *origin =
|
|
* data->ValueListStorageFor(eCSSProperty_background_origin);
|
|
const nsCSSValuePairList *size =
|
|
* data->ValuePairListStorageFor(eCSSProperty_background_size);
|
|
for (;;) {
|
|
if (size->mXValue.GetUnit() != eCSSUnit_Auto ||
|
|
size->mYValue.GetUnit() != eCSSUnit_Auto) {
|
|
// Non-default background-size, so can't be serialized as shorthand.
|
|
aValue.Truncate();
|
|
return NS_OK;
|
|
}
|
|
AppendCSSValueToString(eCSSProperty_background_image,
|
|
image->mValue, aValue);
|
|
aValue.Append(PRUnichar(' '));
|
|
AppendCSSValueToString(eCSSProperty_background_repeat,
|
|
repeat->mValue, aValue);
|
|
aValue.Append(PRUnichar(' '));
|
|
AppendCSSValueToString(eCSSProperty_background_attachment,
|
|
attachment->mValue, aValue);
|
|
aValue.Append(PRUnichar(' '));
|
|
AppendCSSValueToString(eCSSProperty_background_position,
|
|
position->mXValue, aValue);
|
|
aValue.Append(PRUnichar(' '));
|
|
AppendCSSValueToString(eCSSProperty_background_position,
|
|
position->mYValue, aValue);
|
|
NS_ASSERTION(clip->mValue.GetUnit() == eCSSUnit_Enumerated &&
|
|
origin->mValue.GetUnit() == eCSSUnit_Enumerated,
|
|
"should not be inherit/initial within list and "
|
|
"should have returned early for real inherit/initial");
|
|
if (clip->mValue.GetIntValue() != NS_STYLE_BG_CLIP_BORDER ||
|
|
origin->mValue.GetIntValue() != NS_STYLE_BG_ORIGIN_PADDING) {
|
|
PR_STATIC_ASSERT(NS_STYLE_BG_CLIP_BORDER ==
|
|
NS_STYLE_BG_ORIGIN_BORDER);
|
|
PR_STATIC_ASSERT(NS_STYLE_BG_CLIP_PADDING ==
|
|
NS_STYLE_BG_ORIGIN_PADDING);
|
|
PR_STATIC_ASSERT(NS_STYLE_BG_CLIP_CONTENT ==
|
|
NS_STYLE_BG_ORIGIN_CONTENT);
|
|
// The shorthand only has a single clip/origin value which
|
|
// sets both properties. So if they're different (and
|
|
// non-default), we can't represent the state using the
|
|
// shorthand.
|
|
if (clip->mValue != origin->mValue) {
|
|
aValue.Truncate();
|
|
return NS_OK;
|
|
}
|
|
|
|
aValue.Append(PRUnichar(' '));
|
|
AppendCSSValueToString(eCSSProperty_background_clip,
|
|
clip->mValue, aValue);
|
|
}
|
|
|
|
image = image->mNext;
|
|
repeat = repeat->mNext;
|
|
attachment = attachment->mNext;
|
|
position = position->mNext;
|
|
clip = clip->mNext;
|
|
origin = origin->mNext;
|
|
size = size->mNext;
|
|
|
|
if (!image) {
|
|
if (repeat || attachment || position || clip || origin || size) {
|
|
// Uneven length lists, so can't be serialized as shorthand.
|
|
aValue.Truncate();
|
|
return NS_OK;
|
|
}
|
|
break;
|
|
}
|
|
if (!repeat || !attachment || !position || !clip || !origin || !size) {
|
|
// Uneven length lists, so can't be serialized as shorthand.
|
|
aValue.Truncate();
|
|
return NS_OK;
|
|
}
|
|
aValue.Append(PRUnichar(','));
|
|
aValue.Append(PRUnichar(' '));
|
|
}
|
|
|
|
aValue.Append(PRUnichar(' '));
|
|
AppendValueToString(eCSSProperty_background_color, aValue);
|
|
break;
|
|
}
|
|
case eCSSProperty_cue: {
|
|
if (AppendValueToString(eCSSProperty_cue_before, aValue)) {
|
|
aValue.Append(PRUnichar(' '));
|
|
if (!AppendValueToString(eCSSProperty_cue_after, aValue))
|
|
aValue.Truncate();
|
|
}
|
|
break;
|
|
}
|
|
case eCSSProperty_font: {
|
|
// systemFont might not be present; the others are guaranteed to be
|
|
// based on the shorthand check at the beginning of the function
|
|
const nsCSSValue *systemFont =
|
|
data->ValueStorageFor(eCSSProperty__x_system_font);
|
|
const nsCSSValue &style =
|
|
*data->ValueStorageFor(eCSSProperty_font_style);
|
|
const nsCSSValue &variant =
|
|
*data->ValueStorageFor(eCSSProperty_font_variant);
|
|
const nsCSSValue &weight =
|
|
*data->ValueStorageFor(eCSSProperty_font_weight);
|
|
const nsCSSValue &size =
|
|
*data->ValueStorageFor(eCSSProperty_font_size);
|
|
const nsCSSValue &lh =
|
|
*data->ValueStorageFor(eCSSProperty_line_height);
|
|
const nsCSSValue &family =
|
|
*data->ValueStorageFor(eCSSProperty_font_family);
|
|
const nsCSSValue &stretch =
|
|
*data->ValueStorageFor(eCSSProperty_font_stretch);
|
|
const nsCSSValue &sizeAdjust =
|
|
*data->ValueStorageFor(eCSSProperty_font_size_adjust);
|
|
const nsCSSValue &featureSettings =
|
|
*data->ValueStorageFor(eCSSProperty_font_feature_settings);
|
|
const nsCSSValue &languageOverride =
|
|
*data->ValueStorageFor(eCSSProperty_font_language_override);
|
|
|
|
if (systemFont &&
|
|
systemFont->GetUnit() != eCSSUnit_None &&
|
|
systemFont->GetUnit() != eCSSUnit_Null) {
|
|
if (style.GetUnit() != eCSSUnit_System_Font ||
|
|
variant.GetUnit() != eCSSUnit_System_Font ||
|
|
weight.GetUnit() != eCSSUnit_System_Font ||
|
|
size.GetUnit() != eCSSUnit_System_Font ||
|
|
lh.GetUnit() != eCSSUnit_System_Font ||
|
|
family.GetUnit() != eCSSUnit_System_Font ||
|
|
stretch.GetUnit() != eCSSUnit_System_Font ||
|
|
sizeAdjust.GetUnit() != eCSSUnit_System_Font ||
|
|
featureSettings.GetUnit() != eCSSUnit_System_Font ||
|
|
languageOverride.GetUnit() != eCSSUnit_System_Font) {
|
|
// This can't be represented as a shorthand.
|
|
return NS_OK;
|
|
}
|
|
AppendCSSValueToString(eCSSProperty__x_system_font, *systemFont,
|
|
aValue);
|
|
} else {
|
|
// The font-stretch, font-size-adjust,
|
|
// -moz-font-feature-settings, and -moz-font-language-override
|
|
// properties are reset by this shorthand property to their
|
|
// initial values, but can't be represented in its syntax.
|
|
if (stretch.GetUnit() != eCSSUnit_Enumerated ||
|
|
stretch.GetIntValue() != NS_STYLE_FONT_STRETCH_NORMAL ||
|
|
sizeAdjust.GetUnit() != eCSSUnit_None ||
|
|
featureSettings.GetUnit() != eCSSUnit_Normal ||
|
|
languageOverride.GetUnit() != eCSSUnit_Normal) {
|
|
return NS_OK;
|
|
}
|
|
|
|
if (style.GetUnit() != eCSSUnit_Enumerated ||
|
|
style.GetIntValue() != NS_FONT_STYLE_NORMAL) {
|
|
AppendCSSValueToString(eCSSProperty_font_style, style, aValue);
|
|
aValue.Append(PRUnichar(' '));
|
|
}
|
|
if (variant.GetUnit() != eCSSUnit_Enumerated ||
|
|
variant.GetIntValue() != NS_FONT_VARIANT_NORMAL) {
|
|
AppendCSSValueToString(eCSSProperty_font_variant, variant, aValue);
|
|
aValue.Append(PRUnichar(' '));
|
|
}
|
|
if (weight.GetUnit() != eCSSUnit_Enumerated ||
|
|
weight.GetIntValue() != NS_FONT_WEIGHT_NORMAL) {
|
|
AppendCSSValueToString(eCSSProperty_font_weight, weight, aValue);
|
|
aValue.Append(PRUnichar(' '));
|
|
}
|
|
AppendCSSValueToString(eCSSProperty_font_size, size, aValue);
|
|
if (lh.GetUnit() != eCSSUnit_Normal) {
|
|
aValue.Append(PRUnichar('/'));
|
|
AppendCSSValueToString(eCSSProperty_line_height, lh, aValue);
|
|
}
|
|
aValue.Append(PRUnichar(' '));
|
|
AppendCSSValueToString(eCSSProperty_font_family, family, aValue);
|
|
}
|
|
break;
|
|
}
|
|
case eCSSProperty_list_style:
|
|
if (AppendValueToString(eCSSProperty_list_style_type, aValue))
|
|
aValue.Append(PRUnichar(' '));
|
|
if (AppendValueToString(eCSSProperty_list_style_position, aValue))
|
|
aValue.Append(PRUnichar(' '));
|
|
AppendValueToString(eCSSProperty_list_style_image, aValue);
|
|
break;
|
|
case eCSSProperty_overflow: {
|
|
const nsCSSValue &xValue =
|
|
*data->ValueStorageFor(eCSSProperty_overflow_x);
|
|
const nsCSSValue &yValue =
|
|
*data->ValueStorageFor(eCSSProperty_overflow_y);
|
|
if (xValue == yValue)
|
|
AppendCSSValueToString(eCSSProperty_overflow_x, xValue, aValue);
|
|
break;
|
|
}
|
|
case eCSSProperty_pause: {
|
|
if (AppendValueToString(eCSSProperty_pause_before, aValue)) {
|
|
aValue.Append(PRUnichar(' '));
|
|
if (!AppendValueToString(eCSSProperty_pause_after, aValue))
|
|
aValue.Truncate();
|
|
}
|
|
break;
|
|
}
|
|
case eCSSProperty_transition: {
|
|
#define NUM_TRANSITION_SUBPROPS 4
|
|
const nsCSSProperty* subprops =
|
|
nsCSSProps::SubpropertyEntryFor(aProperty);
|
|
#ifdef DEBUG
|
|
for (int i = 0; i < NUM_TRANSITION_SUBPROPS; ++i) {
|
|
NS_ASSERTION(nsCSSProps::kTypeTable[subprops[i]] == eCSSType_ValueList,
|
|
"type mismatch");
|
|
}
|
|
NS_ASSERTION(subprops[NUM_TRANSITION_SUBPROPS] == eCSSProperty_UNKNOWN,
|
|
"length mismatch");
|
|
#endif
|
|
const nsCSSValueList* val[NUM_TRANSITION_SUBPROPS];
|
|
for (int i = 0; i < NUM_TRANSITION_SUBPROPS; ++i) {
|
|
val[i] = *data->ValueListStorageFor(subprops[i]);
|
|
}
|
|
// Merge the lists of the subproperties into a single list.
|
|
for (;;) {
|
|
for (int i = 0; i < NUM_TRANSITION_SUBPROPS; ++i) {
|
|
AppendCSSValueToString(subprops[i], val[i]->mValue, aValue);
|
|
aValue.Append(PRUnichar(' '));
|
|
val[i] = val[i]->mNext;
|
|
}
|
|
// Remove the last space.
|
|
aValue.Truncate(aValue.Length() - 1);
|
|
|
|
PR_STATIC_ASSERT(NUM_TRANSITION_SUBPROPS == 4);
|
|
if (!val[0] || !val[1] || !val[2] || !val[3]) {
|
|
break;
|
|
}
|
|
aValue.AppendLiteral(", ");
|
|
}
|
|
|
|
PR_STATIC_ASSERT(NUM_TRANSITION_SUBPROPS == 4);
|
|
if (val[0] || val[1] || val[2] || val[3]) {
|
|
// The sublists are different lengths, so this can't be
|
|
// represented as the shorthand.
|
|
aValue.Truncate();
|
|
}
|
|
#undef NUM_TRANSITION_SUBPROPS
|
|
break;
|
|
}
|
|
|
|
case eCSSProperty_marker: {
|
|
const nsCSSValue &endValue =
|
|
*data->ValueStorageFor(eCSSProperty_marker_end);
|
|
const nsCSSValue &midValue =
|
|
*data->ValueStorageFor(eCSSProperty_marker_mid);
|
|
const nsCSSValue &startValue =
|
|
*data->ValueStorageFor(eCSSProperty_marker_start);
|
|
if (endValue == midValue && midValue == startValue)
|
|
AppendValueToString(eCSSProperty_marker_end, aValue);
|
|
break;
|
|
}
|
|
default:
|
|
NS_NOTREACHED("no other shorthands");
|
|
break;
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
PRBool
|
|
Declaration::GetValueIsImportant(const nsAString& aProperty) const
|
|
{
|
|
nsCSSProperty propID = nsCSSProps::LookupProperty(aProperty);
|
|
return GetValueIsImportant(propID);
|
|
}
|
|
|
|
PRBool
|
|
Declaration::GetValueIsImportant(nsCSSProperty aProperty) const
|
|
{
|
|
if (!mImportantData)
|
|
return PR_FALSE;
|
|
|
|
// Calling StorageFor is inefficient, but we can assume '!important'
|
|
// is rare.
|
|
|
|
if (nsCSSProps::IsShorthand(aProperty)) {
|
|
CSSPROPS_FOR_SHORTHAND_SUBPROPERTIES(p, aProperty) {
|
|
if (*p == eCSSProperty__x_system_font) {
|
|
// The system_font subproperty doesn't count.
|
|
continue;
|
|
}
|
|
if (!mImportantData->StorageFor(*p)) {
|
|
return PR_FALSE;
|
|
}
|
|
}
|
|
return PR_TRUE;
|
|
}
|
|
|
|
return mImportantData->StorageFor(aProperty) != nsnull;
|
|
}
|
|
|
|
/* static */ void
|
|
Declaration::AppendImportanceToString(PRBool aIsImportant,
|
|
nsAString& aString)
|
|
{
|
|
if (aIsImportant) {
|
|
aString.AppendLiteral(" ! important");
|
|
}
|
|
}
|
|
|
|
void
|
|
Declaration::AppendPropertyAndValueToString(nsCSSProperty aProperty,
|
|
nsAutoString& aValue,
|
|
nsAString& aResult) const
|
|
{
|
|
NS_ASSERTION(0 <= aProperty && aProperty < eCSSProperty_COUNT,
|
|
"property enum out of range");
|
|
NS_ASSERTION((aProperty < eCSSProperty_COUNT_no_shorthands) ==
|
|
aValue.IsEmpty(),
|
|
"aValue should be given for shorthands but not longhands");
|
|
AppendASCIItoUTF16(nsCSSProps::GetStringValue(aProperty), aResult);
|
|
aResult.AppendLiteral(": ");
|
|
if (aValue.IsEmpty())
|
|
AppendValueToString(aProperty, aResult);
|
|
else
|
|
aResult.Append(aValue);
|
|
PRBool isImportant = GetValueIsImportant(aProperty);
|
|
AppendImportanceToString(isImportant, aResult);
|
|
aResult.AppendLiteral("; ");
|
|
}
|
|
|
|
nsresult
|
|
Declaration::ToString(nsAString& aString) const
|
|
{
|
|
nsCSSCompressedDataBlock *systemFontData =
|
|
GetValueIsImportant(eCSSProperty__x_system_font) ? mImportantData : mData;
|
|
const nsCSSValue *systemFont =
|
|
systemFontData->ValueStorageFor(eCSSProperty__x_system_font);
|
|
const PRBool haveSystemFont = systemFont &&
|
|
systemFont->GetUnit() != eCSSUnit_None &&
|
|
systemFont->GetUnit() != eCSSUnit_Null;
|
|
PRBool didSystemFont = PR_FALSE;
|
|
|
|
PRInt32 count = mOrder.Length();
|
|
PRInt32 index;
|
|
nsAutoTArray<nsCSSProperty, 16> shorthandsUsed;
|
|
for (index = 0; index < count; index++) {
|
|
nsCSSProperty property = OrderValueAt(index);
|
|
PRBool doneProperty = PR_FALSE;
|
|
|
|
// If we already used this property in a shorthand, skip it.
|
|
if (shorthandsUsed.Length() > 0) {
|
|
for (const nsCSSProperty *shorthands =
|
|
nsCSSProps::ShorthandsContaining(property);
|
|
*shorthands != eCSSProperty_UNKNOWN; ++shorthands) {
|
|
if (shorthandsUsed.Contains(*shorthands)) {
|
|
doneProperty = PR_TRUE;
|
|
break;
|
|
}
|
|
}
|
|
if (doneProperty)
|
|
continue;
|
|
}
|
|
|
|
// Try to use this property in a shorthand.
|
|
nsAutoString value;
|
|
for (const nsCSSProperty *shorthands =
|
|
nsCSSProps::ShorthandsContaining(property);
|
|
*shorthands != eCSSProperty_UNKNOWN; ++shorthands) {
|
|
// ShorthandsContaining returns the shorthands in order from those
|
|
// that contain the most subproperties to those that contain the
|
|
// least, which is exactly the order we want to test them.
|
|
nsCSSProperty shorthand = *shorthands;
|
|
|
|
// If GetValue gives us a non-empty string back, we can use that
|
|
// value; otherwise it's not possible to use this shorthand.
|
|
GetValue(shorthand, value);
|
|
if (!value.IsEmpty()) {
|
|
AppendPropertyAndValueToString(shorthand, value, aString);
|
|
shorthandsUsed.AppendElement(shorthand);
|
|
doneProperty = PR_TRUE;
|
|
break;
|
|
}
|
|
|
|
NS_ASSERTION(shorthand != eCSSProperty_font ||
|
|
*(shorthands + 1) == eCSSProperty_UNKNOWN,
|
|
"font should always be the only containing shorthand");
|
|
if (shorthand == eCSSProperty_font) {
|
|
if (haveSystemFont && !didSystemFont) {
|
|
// Output the shorthand font declaration that we will
|
|
// partially override later. But don't add it to
|
|
// |shorthandsUsed|, since we will have to override it.
|
|
AppendCSSValueToString(eCSSProperty__x_system_font, *systemFont,
|
|
value);
|
|
AppendPropertyAndValueToString(eCSSProperty_font, value, aString);
|
|
value.Truncate();
|
|
didSystemFont = PR_TRUE;
|
|
}
|
|
|
|
// That we output the system font is enough for this property if:
|
|
// (1) it's the hidden system font subproperty (which either
|
|
// means we output it or we don't have it), or
|
|
// (2) its value is the hidden system font value and it matches
|
|
// the hidden system font subproperty in importance, and
|
|
// we output the system font subproperty.
|
|
NS_ASSERTION(nsCSSProps::kTypeTable[property] == eCSSType_Value,
|
|
"not a value typed subproperty");
|
|
const nsCSSValue *val =
|
|
systemFontData->ValueStorageFor(property);
|
|
if (property == eCSSProperty__x_system_font ||
|
|
(haveSystemFont && val && val->GetUnit() == eCSSUnit_System_Font)) {
|
|
doneProperty = PR_TRUE;
|
|
}
|
|
}
|
|
}
|
|
if (doneProperty)
|
|
continue;
|
|
|
|
NS_ASSERTION(value.IsEmpty(), "value should be empty now");
|
|
AppendPropertyAndValueToString(property, value, aString);
|
|
}
|
|
if (! aString.IsEmpty()) {
|
|
// if the string is not empty, we have a trailing whitespace we should remove
|
|
aString.Truncate(aString.Length() - 1);
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
void Declaration::List(FILE* out, PRInt32 aIndent) const
|
|
{
|
|
for (PRInt32 index = aIndent; --index >= 0; ) fputs(" ", out);
|
|
|
|
fputs("{ ", out);
|
|
nsAutoString s;
|
|
ToString(s);
|
|
fputs(NS_ConvertUTF16toUTF8(s).get(), out);
|
|
fputs("}", out);
|
|
}
|
|
#endif
|
|
|
|
nsresult
|
|
Declaration::GetNthProperty(PRUint32 aIndex, nsAString& aReturn) const
|
|
{
|
|
aReturn.Truncate();
|
|
if (aIndex < mOrder.Length()) {
|
|
nsCSSProperty property = OrderValueAt(aIndex);
|
|
if (0 <= property) {
|
|
AppendASCIItoUTF16(nsCSSProps::GetStringValue(property), aReturn);
|
|
}
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
Declaration*
|
|
Declaration::Clone() const
|
|
{
|
|
return new Declaration(*this);
|
|
}
|
|
|
|
PRBool
|
|
Declaration::InitializeEmpty()
|
|
{
|
|
NS_ASSERTION(!mData && !mImportantData, "already initialized");
|
|
mData = nsCSSCompressedDataBlock::CreateEmptyBlock();
|
|
return mData != nsnull;
|
|
}
|
|
|
|
PRBool
|
|
Declaration::EnsureMutable()
|
|
{
|
|
if (!mData->IsMutable()) {
|
|
nsRefPtr<nsCSSCompressedDataBlock> newBlock = mData->Clone();
|
|
if (!newBlock) {
|
|
return PR_FALSE;
|
|
}
|
|
newBlock.swap(mData);
|
|
}
|
|
if (mImportantData && !mImportantData->IsMutable()) {
|
|
nsRefPtr<nsCSSCompressedDataBlock> newBlock = mImportantData->Clone();
|
|
if (!newBlock) {
|
|
return PR_FALSE;
|
|
}
|
|
newBlock.swap(mImportantData);
|
|
}
|
|
return PR_TRUE;
|
|
}
|
|
|
|
} // namespace mozilla::css
|
|
} // namespace mozilla
|