2004-09-10 03:26:58 +00:00
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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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2003-06-07 22:14:42 +00:00
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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 nsCSSDataBlock.cpp.
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*
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* The Initial Developer of the Original Code is L. David Baron.
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* Portions created by the Initial Developer are Copyright (C) 2003
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* L. David Baron <dbaron@dbaron.org> (original author)
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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 the GNU General Public License Version 2 or later (the "GPL"), or
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* 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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2006-03-25 05:47:31 +00:00
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/*
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* compact representation of the property-value pairs within a CSS
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* declaration, and the code for expanding and compacting it
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*/
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2003-06-07 22:14:42 +00:00
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#include "nsCSSDataBlock.h"
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2010-07-23 18:00:44 +00:00
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#include "mozilla/css/Declaration.h"
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2004-07-20 06:11:27 +00:00
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#include "nsRuleData.h"
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2007-05-16 21:10:31 +00:00
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#include "nsStyleSet.h"
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2010-04-06 19:42:41 +00:00
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#include "nsStyleContext.h"
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2003-06-07 22:14:42 +00:00
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2010-07-23 18:00:44 +00:00
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namespace css = mozilla::css;
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2010-08-19 19:33:44 +00:00
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/**
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* Does a fast move of aSource to aDest. The previous value in
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* aDest is cleanly destroyed, and aSource is cleared. Returns
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* true if, before the copy, the value at aSource compared unequal
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* to the value at aDest; false otherwise.
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*/
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2011-09-29 06:19:26 +00:00
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static bool
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2010-08-19 19:33:44 +00:00
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MoveValue(nsCSSValue* aSource, nsCSSValue* aDest)
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{
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2011-09-29 06:19:26 +00:00
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bool changed = (*aSource != *aDest);
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2010-08-19 19:33:44 +00:00
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aDest->~nsCSSValue();
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memcpy(aDest, aSource, sizeof(nsCSSValue));
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new (aSource) nsCSSValue();
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return changed;
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}
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2011-09-29 06:19:26 +00:00
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static bool
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2007-05-16 21:10:31 +00:00
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ShouldIgnoreColors(nsRuleData *aRuleData)
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{
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return aRuleData->mLevel != nsStyleSet::eAgentSheet &&
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aRuleData->mLevel != nsStyleSet::eUserSheet &&
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2007-11-16 03:46:42 +00:00
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!aRuleData->mPresContext->UseDocumentColors();
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2007-05-16 21:10:31 +00:00
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}
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2009-08-21 20:39:25 +00:00
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/**
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* Tries to call |nsCSSValue::StartImageLoad()| on an image source.
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* Image sources are specified by |url()| or |-moz-image-rect()| function.
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*/
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static void
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2009-11-15 03:16:59 +00:00
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TryToStartImageLoadOnValue(const nsCSSValue& aValue, nsIDocument* aDocument)
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2009-08-21 20:39:25 +00:00
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{
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if (aValue.GetUnit() == eCSSUnit_URL) {
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aValue.StartImageLoad(aDocument);
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}
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else if (aValue.EqualsFunction(eCSSKeyword__moz_image_rect)) {
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nsCSSValue::Array* arguments = aValue.GetArrayValue();
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NS_ABORT_IF_FALSE(arguments->Count() == 6, "unexpected num of arguments");
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const nsCSSValue& image = arguments->Item(1);
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2012-04-07 17:36:49 +00:00
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if (image.GetUnit() == eCSSUnit_URL)
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image.StartImageLoad(aDocument);
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2009-08-21 20:39:25 +00:00
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}
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}
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2009-11-15 03:16:59 +00:00
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static void
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TryToStartImageLoad(const nsCSSValue& aValue, nsIDocument* aDocument,
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nsCSSProperty aProperty)
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{
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2010-08-19 19:33:44 +00:00
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if (aValue.GetUnit() == eCSSUnit_List) {
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for (const nsCSSValueList* l = aValue.GetListValue(); l; l = l->mNext) {
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TryToStartImageLoad(l->mValue, aDocument, aProperty);
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}
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} else if (nsCSSProps::PropHasFlags(aProperty,
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CSS_PROPERTY_IMAGE_IS_IN_ARRAY_0)) {
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2009-11-15 03:16:59 +00:00
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if (aValue.GetUnit() == eCSSUnit_Array) {
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TryToStartImageLoadOnValue(aValue.GetArrayValue()->Item(0), aDocument);
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}
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} else {
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TryToStartImageLoadOnValue(aValue, aDocument);
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}
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}
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2011-09-29 06:19:26 +00:00
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static inline bool
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2010-04-06 19:42:41 +00:00
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ShouldStartImageLoads(nsRuleData *aRuleData, nsCSSProperty aProperty)
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{
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// Don't initiate image loads for if-visited styles. This is
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// important because:
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// (1) it's a waste of CPU and bandwidth
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// (2) in some cases we'd start the image load on a style change
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// where we wouldn't have started the load initially, which makes
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// which links are visited detectable to Web pages (see bug
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// 557287)
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return !aRuleData->mStyleContext->IsStyleIfVisited() &&
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nsCSSProps::PropHasFlags(aProperty, CSS_PROPERTY_START_IMAGE_LOADS);
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}
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2010-05-20 02:28:00 +00:00
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void
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2003-06-07 22:14:42 +00:00
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nsCSSCompressedDataBlock::MapRuleInfoInto(nsRuleData *aRuleData) const
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{
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2007-10-08 21:58:22 +00:00
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// If we have no data for these structs, then return immediately.
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2003-06-07 22:14:42 +00:00
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// This optimization should make us return most of the time, so we
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// have to worry much less (although still some) about the speed of
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// the rest of the function.
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2007-10-08 21:58:22 +00:00
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if (!(aRuleData->mSIDs & mStyleBits))
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2010-05-20 02:28:00 +00:00
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return;
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2003-06-07 22:14:42 +00:00
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2009-08-21 20:39:25 +00:00
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nsIDocument* doc = aRuleData->mPresContext->Document();
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2012-03-19 08:39:15 +00:00
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for (PRUint32 i = 0; i < mNumProps; i++) {
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nsCSSProperty iProp = PropertyAtIndex(i);
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2007-10-08 21:58:22 +00:00
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if (nsCachedStyleData::GetBitForSID(nsCSSProps::kSIDTable[iProp]) &
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aRuleData->mSIDs) {
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2010-08-19 19:33:44 +00:00
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nsCSSValue* target = aRuleData->ValueFor(iProp);
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if (target->GetUnit() == eCSSUnit_Null) {
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2012-03-19 08:39:15 +00:00
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const nsCSSValue *val = ValueAtIndex(i);
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2010-08-19 19:33:44 +00:00
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NS_ABORT_IF_FALSE(val->GetUnit() != eCSSUnit_Null, "oops");
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2010-08-19 19:33:44 +00:00
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if (ShouldStartImageLoads(aRuleData, iProp)) {
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TryToStartImageLoad(*val, doc, iProp);
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}
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*target = *val;
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if (nsCSSProps::PropHasFlags(iProp,
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CSS_PROPERTY_IGNORED_WHEN_COLORS_DISABLED) &&
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ShouldIgnoreColors(aRuleData))
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{
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if (iProp == eCSSProperty_background_color) {
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// Force non-'transparent' background
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// colors to the user's default.
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if (target->IsNonTransparentColor()) {
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target->SetColorValue(aRuleData->mPresContext->
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DefaultBackgroundColor());
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2007-05-16 21:10:31 +00:00
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}
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2010-08-19 19:33:44 +00:00
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} else {
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// Ignore 'color', 'border-*-color', etc.
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*target = nsCSSValue();
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2003-06-07 22:14:42 +00:00
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}
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2010-08-19 19:33:44 +00:00
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}
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2003-06-07 22:14:42 +00:00
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}
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}
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}
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}
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2010-08-19 19:33:44 +00:00
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const nsCSSValue*
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nsCSSCompressedDataBlock::ValueFor(nsCSSProperty aProperty) const
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2003-06-07 22:14:42 +00:00
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{
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2010-08-19 19:33:44 +00:00
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NS_ABORT_IF_FALSE(!nsCSSProps::IsShorthand(aProperty),
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"Don't call for shorthands");
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2009-07-09 21:50:39 +00:00
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2003-06-07 22:14:42 +00:00
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// If we have no data for this struct, then return immediately.
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// This optimization should make us return most of the time, so we
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// have to worry much less (although still some) about the speed of
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// the rest of the function.
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if (!(nsCachedStyleData::GetBitForSID(nsCSSProps::kSIDTable[aProperty]) &
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mStyleBits))
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return nsnull;
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2012-03-19 08:39:15 +00:00
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for (PRUint32 i = 0; i < mNumProps; i++) {
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if (PropertyAtIndex(i) == aProperty) {
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return ValueAtIndex(i);
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2003-06-07 22:14:42 +00:00
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}
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}
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return nsnull;
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}
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2011-09-29 06:19:26 +00:00
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bool
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2010-08-19 19:33:44 +00:00
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nsCSSCompressedDataBlock::TryReplaceValue(nsCSSProperty aProperty,
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nsCSSExpandedDataBlock& aFromBlock,
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2011-09-29 06:19:26 +00:00
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bool *aChanged)
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2010-08-19 19:33:44 +00:00
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{
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nsCSSValue* newValue = aFromBlock.PropertyAt(aProperty);
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NS_ABORT_IF_FALSE(newValue && newValue->GetUnit() != eCSSUnit_Null,
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"cannot replace with empty value");
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const nsCSSValue* oldValue = ValueFor(aProperty);
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if (!oldValue) {
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2011-10-17 14:59:28 +00:00
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*aChanged = false;
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return false;
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2010-08-19 19:33:44 +00:00
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}
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*aChanged = MoveValue(newValue, const_cast<nsCSSValue*>(oldValue));
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aFromBlock.ClearPropertyBit(aProperty);
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2011-10-17 14:59:28 +00:00
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return true;
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2010-08-19 19:33:44 +00:00
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}
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2010-07-23 18:00:52 +00:00
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nsCSSCompressedDataBlock*
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2003-06-07 22:14:42 +00:00
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nsCSSCompressedDataBlock::Clone() const
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{
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2012-03-19 08:39:15 +00:00
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nsAutoPtr<nsCSSCompressedDataBlock>
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result(new(mNumProps) nsCSSCompressedDataBlock(mNumProps));
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2003-06-07 22:14:42 +00:00
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2012-03-19 08:39:15 +00:00
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result->mStyleBits = mStyleBits;
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2012-03-19 05:53:20 +00:00
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2012-03-19 08:39:15 +00:00
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for (PRUint32 i = 0; i < mNumProps; i++) {
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result->SetPropertyAtIndex(i, PropertyAtIndex(i));
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result->CopyValueToIndex(i, ValueAtIndex(i));
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2003-06-07 22:14:42 +00:00
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}
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2009-12-11 16:13:19 +00:00
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2010-07-23 18:00:52 +00:00
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return result.forget();
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2003-06-07 22:14:42 +00:00
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}
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2010-07-23 18:00:52 +00:00
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nsCSSCompressedDataBlock::~nsCSSCompressedDataBlock()
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2003-06-07 22:14:42 +00:00
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{
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2012-03-19 08:39:15 +00:00
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for (PRUint32 i = 0; i < mNumProps; i++) {
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#ifdef DEBUG
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(void)PropertyAtIndex(i); // this checks the property is in range
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#endif
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const nsCSSValue* val = ValueAtIndex(i);
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2010-08-19 19:33:44 +00:00
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NS_ABORT_IF_FALSE(val->GetUnit() != eCSSUnit_Null, "oops");
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2010-08-19 19:33:44 +00:00
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val->~nsCSSValue();
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2003-06-07 22:14:42 +00:00
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}
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}
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2010-07-23 18:00:52 +00:00
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/* static */ nsCSSCompressedDataBlock*
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2003-06-07 22:14:42 +00:00
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nsCSSCompressedDataBlock::CreateEmptyBlock()
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{
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2012-03-19 08:39:15 +00:00
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nsCSSCompressedDataBlock *result = new(0) nsCSSCompressedDataBlock(0);
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2003-06-07 22:14:42 +00:00
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return result;
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}
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2012-01-03 02:19:14 +00:00
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size_t
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nsCSSCompressedDataBlock::SizeOfIncludingThis(nsMallocSizeOfFun aMallocSizeOf) const
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{
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size_t n = aMallocSizeOf(this);
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2012-03-19 08:39:15 +00:00
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for (PRUint32 i = 0; i < mNumProps; i++) {
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n += ValueAtIndex(i)->SizeOfExcludingThis(aMallocSizeOf);
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2012-01-03 02:19:14 +00:00
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}
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return n;
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}
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2003-06-07 22:14:42 +00:00
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/*****************************************************************************/
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nsCSSExpandedDataBlock::nsCSSExpandedDataBlock()
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{
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AssertInitialState();
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}
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nsCSSExpandedDataBlock::~nsCSSExpandedDataBlock()
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{
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AssertInitialState();
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}
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void
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2010-07-23 18:00:52 +00:00
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nsCSSExpandedDataBlock::DoExpand(nsCSSCompressedDataBlock *aBlock,
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2011-09-29 06:19:26 +00:00
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bool aImportant)
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2003-06-07 22:14:42 +00:00
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{
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/*
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* Save needless copying and allocation by copying the memory
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2010-07-23 18:00:52 +00:00
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* corresponding to the stored data in the compressed block.
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2003-06-07 22:14:42 +00:00
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*/
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2012-03-19 08:39:15 +00:00
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for (PRUint32 i = 0; i < aBlock->mNumProps; i++) {
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nsCSSProperty iProp = aBlock->PropertyAtIndex(i);
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2010-08-19 19:33:44 +00:00
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NS_ABORT_IF_FALSE(!nsCSSProps::IsShorthand(iProp), "out of range");
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NS_ABORT_IF_FALSE(!HasPropertyBit(iProp),
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"compressed block has property multiple times");
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2003-06-07 22:14:42 +00:00
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SetPropertyBit(iProp);
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if (aImportant)
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SetImportantBit(iProp);
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2012-03-19 08:39:15 +00:00
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const nsCSSValue* val = aBlock->ValueAtIndex(i);
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2010-08-19 19:33:44 +00:00
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nsCSSValue* dest = PropertyAt(iProp);
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2010-08-19 19:33:44 +00:00
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NS_ABORT_IF_FALSE(val->GetUnit() != eCSSUnit_Null, "oops");
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NS_ABORT_IF_FALSE(dest->GetUnit() == eCSSUnit_Null,
|
|
|
|
"expanding into non-empty block");
|
2007-08-28 06:47:32 +00:00
|
|
|
#ifdef NS_BUILD_REFCNT_LOGGING
|
2010-08-19 19:33:44 +00:00
|
|
|
dest->~nsCSSValue();
|
2007-08-28 06:47:32 +00:00
|
|
|
#endif
|
2010-08-19 19:33:44 +00:00
|
|
|
memcpy(dest, val, sizeof(nsCSSValue));
|
2003-06-07 22:14:42 +00:00
|
|
|
}
|
|
|
|
|
2012-03-19 08:39:15 +00:00
|
|
|
// Set the number of properties to zero so that we don't destroy the
|
|
|
|
// remnants of what we just copied.
|
|
|
|
aBlock->SetNumPropsToZero();
|
2010-07-23 18:00:52 +00:00
|
|
|
delete aBlock;
|
2003-06-07 22:14:42 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
void
|
2010-07-23 18:00:52 +00:00
|
|
|
nsCSSExpandedDataBlock::Expand(nsCSSCompressedDataBlock *aNormalBlock,
|
|
|
|
nsCSSCompressedDataBlock *aImportantBlock)
|
2003-06-07 22:14:42 +00:00
|
|
|
{
|
2010-08-19 19:33:44 +00:00
|
|
|
NS_ABORT_IF_FALSE(aNormalBlock, "unexpected null block");
|
2003-06-07 22:14:42 +00:00
|
|
|
AssertInitialState();
|
|
|
|
|
2011-10-17 14:59:28 +00:00
|
|
|
DoExpand(aNormalBlock, false);
|
2010-07-23 18:00:52 +00:00
|
|
|
if (aImportantBlock) {
|
2011-10-17 14:59:28 +00:00
|
|
|
DoExpand(aImportantBlock, true);
|
2003-06-07 22:14:42 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2012-03-19 08:39:15 +00:00
|
|
|
void
|
|
|
|
nsCSSExpandedDataBlock::ComputeNumProps(PRUint32* aNumPropsNormal,
|
|
|
|
PRUint32* aNumPropsImportant)
|
2003-06-07 22:14:42 +00:00
|
|
|
{
|
2012-03-19 08:39:15 +00:00
|
|
|
*aNumPropsNormal = *aNumPropsImportant = 0;
|
2010-04-23 19:59:15 +00:00
|
|
|
for (size_t iHigh = 0; iHigh < nsCSSPropertySet::kChunkCount; ++iHigh) {
|
2009-09-11 10:46:36 +00:00
|
|
|
if (!mPropertiesSet.HasPropertyInChunk(iHigh))
|
2003-06-07 22:14:42 +00:00
|
|
|
continue;
|
2010-04-23 19:59:15 +00:00
|
|
|
for (size_t iLow = 0; iLow < nsCSSPropertySet::kBitsInChunk; ++iLow) {
|
2009-09-11 10:46:36 +00:00
|
|
|
if (!mPropertiesSet.HasPropertyAt(iHigh, iLow))
|
2003-06-07 22:14:42 +00:00
|
|
|
continue;
|
2011-06-22 16:00:56 +00:00
|
|
|
#ifdef DEBUG
|
2009-09-11 10:46:36 +00:00
|
|
|
nsCSSProperty iProp = nsCSSPropertySet::CSSPropertyAt(iHigh, iLow);
|
2011-06-22 16:00:56 +00:00
|
|
|
#endif
|
2010-08-19 19:33:44 +00:00
|
|
|
NS_ABORT_IF_FALSE(!nsCSSProps::IsShorthand(iProp), "out of range");
|
|
|
|
NS_ABORT_IF_FALSE(PropertyAt(iProp)->GetUnit() != eCSSUnit_Null,
|
|
|
|
"null value while computing size");
|
2009-09-11 10:46:36 +00:00
|
|
|
if (mPropertiesImportant.HasPropertyAt(iHigh, iLow))
|
2012-03-19 08:39:15 +00:00
|
|
|
(*aNumPropsImportant)++;
|
2009-09-11 10:46:36 +00:00
|
|
|
else
|
2012-03-19 08:39:15 +00:00
|
|
|
(*aNumPropsNormal)++;
|
2003-06-07 22:14:42 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
nsCSSExpandedDataBlock::Compress(nsCSSCompressedDataBlock **aNormalBlock,
|
|
|
|
nsCSSCompressedDataBlock **aImportantBlock)
|
|
|
|
{
|
2010-07-23 18:00:52 +00:00
|
|
|
nsAutoPtr<nsCSSCompressedDataBlock> result_normal, result_important;
|
2012-03-19 08:39:15 +00:00
|
|
|
PRUint32 i_normal = 0, i_important = 0;
|
2003-06-07 22:14:42 +00:00
|
|
|
|
2012-03-19 08:39:15 +00:00
|
|
|
PRUint32 numPropsNormal, numPropsImportant;
|
|
|
|
ComputeNumProps(&numPropsNormal, &numPropsImportant);
|
2010-07-23 18:00:52 +00:00
|
|
|
|
2012-03-19 08:39:15 +00:00
|
|
|
result_normal =
|
|
|
|
new(numPropsNormal) nsCSSCompressedDataBlock(numPropsNormal);
|
2003-06-07 22:14:42 +00:00
|
|
|
|
2012-03-19 08:39:15 +00:00
|
|
|
if (numPropsImportant != 0) {
|
|
|
|
result_important =
|
|
|
|
new(numPropsImportant) nsCSSCompressedDataBlock(numPropsImportant);
|
2003-06-07 22:14:42 +00:00
|
|
|
} else {
|
|
|
|
result_important = nsnull;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Save needless copying and allocation by copying the memory
|
|
|
|
* corresponding to the stored data in the expanded block, and then
|
|
|
|
* clearing the data in the expanded block.
|
|
|
|
*/
|
2010-04-23 19:59:15 +00:00
|
|
|
for (size_t iHigh = 0; iHigh < nsCSSPropertySet::kChunkCount; ++iHigh) {
|
2009-09-11 10:46:36 +00:00
|
|
|
if (!mPropertiesSet.HasPropertyInChunk(iHigh))
|
2003-06-07 22:14:42 +00:00
|
|
|
continue;
|
2010-04-23 19:59:15 +00:00
|
|
|
for (size_t iLow = 0; iLow < nsCSSPropertySet::kBitsInChunk; ++iLow) {
|
2009-09-11 10:46:36 +00:00
|
|
|
if (!mPropertiesSet.HasPropertyAt(iHigh, iLow))
|
2003-06-07 22:14:42 +00:00
|
|
|
continue;
|
2009-09-11 10:46:36 +00:00
|
|
|
nsCSSProperty iProp = nsCSSPropertySet::CSSPropertyAt(iHigh, iLow);
|
2010-08-19 19:33:44 +00:00
|
|
|
NS_ABORT_IF_FALSE(!nsCSSProps::IsShorthand(iProp), "out of range");
|
2011-09-29 06:19:26 +00:00
|
|
|
bool important =
|
2009-09-11 10:46:36 +00:00
|
|
|
mPropertiesImportant.HasPropertyAt(iHigh, iLow);
|
2003-06-07 22:14:42 +00:00
|
|
|
nsCSSCompressedDataBlock *result =
|
|
|
|
important ? result_important : result_normal;
|
2012-03-19 08:39:15 +00:00
|
|
|
PRUint32* ip = important ? &i_important : &i_normal;
|
2010-08-19 19:33:44 +00:00
|
|
|
nsCSSValue* val = PropertyAt(iProp);
|
2010-08-19 19:33:44 +00:00
|
|
|
NS_ABORT_IF_FALSE(val->GetUnit() != eCSSUnit_Null,
|
|
|
|
"Null value while compressing");
|
2012-03-19 08:39:15 +00:00
|
|
|
result->SetPropertyAtIndex(*ip, iProp);
|
|
|
|
result->RawCopyValueToIndex(*ip, val);
|
2010-08-19 19:33:44 +00:00
|
|
|
new (val) nsCSSValue();
|
2012-03-19 08:39:15 +00:00
|
|
|
(*ip)++;
|
2005-04-28 20:19:24 +00:00
|
|
|
result->mStyleBits |=
|
|
|
|
nsCachedStyleData::GetBitForSID(nsCSSProps::kSIDTable[iProp]);
|
2003-06-07 22:14:42 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2012-03-19 08:39:15 +00:00
|
|
|
NS_ABORT_IF_FALSE(numPropsNormal == i_normal, "bad numProps");
|
2010-08-19 19:33:44 +00:00
|
|
|
|
2003-06-07 22:14:42 +00:00
|
|
|
if (result_important) {
|
2012-03-19 08:39:15 +00:00
|
|
|
NS_ABORT_IF_FALSE(numPropsImportant == i_important, "bad numProps");
|
2003-06-07 22:14:42 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
ClearSets();
|
|
|
|
AssertInitialState();
|
2010-07-23 18:00:52 +00:00
|
|
|
*aNormalBlock = result_normal.forget();
|
|
|
|
*aImportantBlock = result_important.forget();
|
2003-06-07 22:14:42 +00:00
|
|
|
}
|
|
|
|
|
2010-08-19 19:33:44 +00:00
|
|
|
void
|
|
|
|
nsCSSExpandedDataBlock::AddLonghandProperty(nsCSSProperty aProperty,
|
|
|
|
const nsCSSValue& aValue)
|
|
|
|
{
|
2010-08-19 19:33:44 +00:00
|
|
|
NS_ABORT_IF_FALSE(!nsCSSProps::IsShorthand(aProperty),
|
|
|
|
"property out of range");
|
2010-08-19 19:33:44 +00:00
|
|
|
nsCSSValue& storage = *static_cast<nsCSSValue*>(PropertyAt(aProperty));
|
|
|
|
storage = aValue;
|
|
|
|
SetPropertyBit(aProperty);
|
|
|
|
}
|
|
|
|
|
2003-06-07 22:14:42 +00:00
|
|
|
void
|
|
|
|
nsCSSExpandedDataBlock::Clear()
|
|
|
|
{
|
2010-04-23 19:59:15 +00:00
|
|
|
for (size_t iHigh = 0; iHigh < nsCSSPropertySet::kChunkCount; ++iHigh) {
|
2009-09-11 10:46:36 +00:00
|
|
|
if (!mPropertiesSet.HasPropertyInChunk(iHigh))
|
2003-06-07 22:14:42 +00:00
|
|
|
continue;
|
2010-04-23 19:59:15 +00:00
|
|
|
for (size_t iLow = 0; iLow < nsCSSPropertySet::kBitsInChunk; ++iLow) {
|
2009-09-11 10:46:36 +00:00
|
|
|
if (!mPropertiesSet.HasPropertyAt(iHigh, iLow))
|
2003-06-07 22:14:42 +00:00
|
|
|
continue;
|
2009-09-11 10:46:36 +00:00
|
|
|
nsCSSProperty iProp = nsCSSPropertySet::CSSPropertyAt(iHigh, iLow);
|
2010-07-23 18:00:42 +00:00
|
|
|
ClearLonghandProperty(iProp);
|
2003-06-07 22:14:42 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
AssertInitialState();
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
nsCSSExpandedDataBlock::ClearProperty(nsCSSProperty aPropID)
|
|
|
|
{
|
2010-07-23 18:00:42 +00:00
|
|
|
if (nsCSSProps::IsShorthand(aPropID)) {
|
|
|
|
CSSPROPS_FOR_SHORTHAND_SUBPROPERTIES(p, aPropID) {
|
|
|
|
ClearLonghandProperty(*p);
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
ClearLonghandProperty(aPropID);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
nsCSSExpandedDataBlock::ClearLonghandProperty(nsCSSProperty aPropID)
|
|
|
|
{
|
2010-08-19 19:33:44 +00:00
|
|
|
NS_ABORT_IF_FALSE(!nsCSSProps::IsShorthand(aPropID), "out of range");
|
2003-06-07 22:14:42 +00:00
|
|
|
|
|
|
|
ClearPropertyBit(aPropID);
|
|
|
|
ClearImportantBit(aPropID);
|
2010-08-19 19:33:44 +00:00
|
|
|
PropertyAt(aPropID)->Reset();
|
2003-06-07 22:14:42 +00:00
|
|
|
}
|
|
|
|
|
2011-09-29 06:19:26 +00:00
|
|
|
bool
|
2010-07-23 18:00:44 +00:00
|
|
|
nsCSSExpandedDataBlock::TransferFromBlock(nsCSSExpandedDataBlock& aFromBlock,
|
|
|
|
nsCSSProperty aPropID,
|
2011-09-29 06:19:26 +00:00
|
|
|
bool aIsImportant,
|
|
|
|
bool aOverrideImportant,
|
|
|
|
bool aMustCallValueAppended,
|
2010-08-19 19:33:44 +00:00
|
|
|
css::Declaration* aDeclaration)
|
2010-07-23 18:00:44 +00:00
|
|
|
{
|
2010-08-19 19:33:44 +00:00
|
|
|
if (!nsCSSProps::IsShorthand(aPropID)) {
|
|
|
|
return DoTransferFromBlock(aFromBlock, aPropID,
|
|
|
|
aIsImportant, aOverrideImportant,
|
|
|
|
aMustCallValueAppended, aDeclaration);
|
|
|
|
}
|
|
|
|
|
2011-09-29 06:19:26 +00:00
|
|
|
bool changed = false;
|
2010-07-23 18:00:44 +00:00
|
|
|
CSSPROPS_FOR_SHORTHAND_SUBPROPERTIES(p, aPropID) {
|
2010-08-19 19:33:44 +00:00
|
|
|
changed |= DoTransferFromBlock(aFromBlock, *p,
|
|
|
|
aIsImportant, aOverrideImportant,
|
|
|
|
aMustCallValueAppended, aDeclaration);
|
2010-07-23 18:00:44 +00:00
|
|
|
}
|
2010-08-19 19:33:44 +00:00
|
|
|
return changed;
|
2010-07-23 18:00:44 +00:00
|
|
|
}
|
|
|
|
|
2011-09-29 06:19:26 +00:00
|
|
|
bool
|
2010-07-23 18:00:44 +00:00
|
|
|
nsCSSExpandedDataBlock::DoTransferFromBlock(nsCSSExpandedDataBlock& aFromBlock,
|
|
|
|
nsCSSProperty aPropID,
|
2011-09-29 06:19:26 +00:00
|
|
|
bool aIsImportant,
|
|
|
|
bool aOverrideImportant,
|
|
|
|
bool aMustCallValueAppended,
|
2010-08-19 19:33:44 +00:00
|
|
|
css::Declaration* aDeclaration)
|
2010-07-23 18:00:44 +00:00
|
|
|
{
|
2011-09-29 06:19:26 +00:00
|
|
|
bool changed = false;
|
2010-08-19 19:33:44 +00:00
|
|
|
NS_ABORT_IF_FALSE(aFromBlock.HasPropertyBit(aPropID), "oops");
|
2010-07-23 18:00:44 +00:00
|
|
|
if (aIsImportant) {
|
|
|
|
if (!HasImportantBit(aPropID))
|
2011-10-17 14:59:28 +00:00
|
|
|
changed = true;
|
2010-07-23 18:00:44 +00:00
|
|
|
SetImportantBit(aPropID);
|
|
|
|
} else {
|
|
|
|
if (HasImportantBit(aPropID)) {
|
|
|
|
// When parsing a declaration block, an !important declaration
|
|
|
|
// is not overwritten by an ordinary declaration of the same
|
|
|
|
// property later in the block. However, CSSOM manipulations
|
|
|
|
// come through here too, and in that case we do want to
|
|
|
|
// overwrite the property.
|
|
|
|
if (!aOverrideImportant) {
|
|
|
|
aFromBlock.ClearLonghandProperty(aPropID);
|
2011-10-17 14:59:28 +00:00
|
|
|
return false;
|
2010-07-23 18:00:44 +00:00
|
|
|
}
|
2011-10-17 14:59:28 +00:00
|
|
|
changed = true;
|
2010-07-23 18:00:44 +00:00
|
|
|
ClearImportantBit(aPropID);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
if (aMustCallValueAppended || !HasPropertyBit(aPropID)) {
|
|
|
|
aDeclaration->ValueAppended(aPropID);
|
|
|
|
}
|
|
|
|
|
|
|
|
SetPropertyBit(aPropID);
|
|
|
|
aFromBlock.ClearPropertyBit(aPropID);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Save needless copying and allocation by calling the destructor in
|
|
|
|
* the destination, copying memory directly, and then using placement
|
|
|
|
* new.
|
|
|
|
*/
|
2010-08-19 19:33:44 +00:00
|
|
|
changed |= MoveValue(aFromBlock.PropertyAt(aPropID), PropertyAt(aPropID));
|
2010-08-19 19:33:44 +00:00
|
|
|
return changed;
|
2010-07-23 18:00:44 +00:00
|
|
|
}
|
|
|
|
|
2003-06-07 22:14:42 +00:00
|
|
|
#ifdef DEBUG
|
|
|
|
void
|
|
|
|
nsCSSExpandedDataBlock::DoAssertInitialState()
|
|
|
|
{
|
2009-09-11 10:46:36 +00:00
|
|
|
mPropertiesSet.AssertIsEmpty("not initial state");
|
|
|
|
mPropertiesImportant.AssertIsEmpty("not initial state");
|
2003-06-07 22:14:42 +00:00
|
|
|
|
2009-09-11 10:46:36 +00:00
|
|
|
for (PRUint32 i = 0; i < eCSSProperty_COUNT_no_shorthands; ++i) {
|
2011-03-18 04:58:26 +00:00
|
|
|
nsCSSProperty prop = nsCSSProperty(i);
|
2011-03-28 23:07:26 +00:00
|
|
|
NS_ABORT_IF_FALSE(PropertyAt(prop)->GetUnit() == eCSSUnit_Null,
|
2011-03-18 04:58:26 +00:00
|
|
|
"not initial state");
|
2003-06-07 22:14:42 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
#endif
|