e7ad4f7000
start loading the background images when we resolve style on an object that needs them instead of when we scroll down and see it for the first time. Bug 57607, r=pavlov, sr=dbaron git-svn-id: svn://10.0.0.236/trunk@153725 18797224-902f-48f8-a5cc-f745e15eee43
536 lines
16 KiB
C++
536 lines
16 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: NPL 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 Netscape Public License
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* Version 1.1 (the "License"); you may not use this file except in
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* compliance with the License. You may obtain a copy of the License at
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* http://www.mozilla.org/NPL/
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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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*
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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 NPL, 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 NPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "nsCSSValue.h"
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#include "nsString.h"
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#include "nsCSSProps.h"
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#include "nsReadableUtils.h"
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#include "imgIRequest.h"
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#include "nsIDocument.h"
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#include "nsContentUtils.h"
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// Paint forcing
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#include "prenv.h"
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//#include "nsStyleConsts.h"
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nsCSSValue::nsCSSValue(PRInt32 aValue, nsCSSUnit aUnit)
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: mUnit(aUnit)
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{
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NS_ASSERTION((eCSSUnit_Integer == aUnit) ||
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(eCSSUnit_Enumerated == aUnit), "not an int value");
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if ((eCSSUnit_Integer == aUnit) ||
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(eCSSUnit_Enumerated == aUnit)) {
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mValue.mInt = aValue;
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}
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else {
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mUnit = eCSSUnit_Null;
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mValue.mInt = 0;
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}
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}
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nsCSSValue::nsCSSValue(float aValue, nsCSSUnit aUnit)
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: mUnit(aUnit)
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{
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NS_ASSERTION(eCSSUnit_Percent <= aUnit, "not a float value");
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if (eCSSUnit_Percent <= aUnit) {
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mValue.mFloat = aValue;
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}
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else {
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mUnit = eCSSUnit_Null;
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mValue.mInt = 0;
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}
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}
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nsCSSValue::nsCSSValue(const nsAString& aValue, nsCSSUnit aUnit)
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: mUnit(aUnit)
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{
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NS_ASSERTION((eCSSUnit_String <= aUnit) && (aUnit <= eCSSUnit_Counters), "not a string value");
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if ((eCSSUnit_String <= aUnit) && (aUnit <= eCSSUnit_Counters)) {
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mValue.mString = ToNewUnicode(aValue);
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}
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else {
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mUnit = eCSSUnit_Null;
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mValue.mInt = 0;
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}
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}
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nsCSSValue::nsCSSValue(nscolor aValue)
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: mUnit(eCSSUnit_Color)
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{
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mValue.mColor = aValue;
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}
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nsCSSValue::nsCSSValue(nsCSSValue::URL* aValue)
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: mUnit(eCSSUnit_URL)
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{
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mValue.mURL = aValue;
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mValue.mURL->AddRef();
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}
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nsCSSValue::nsCSSValue(nsCSSValue::Image* aValue)
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: mUnit(eCSSUnit_Image)
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{
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mValue.mImage = aValue;
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mValue.mImage->AddRef();
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}
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nsCSSValue::nsCSSValue(const nsCSSValue& aCopy)
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: mUnit(aCopy.mUnit)
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{
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if ((eCSSUnit_String <= mUnit) && (mUnit <= eCSSUnit_Counters)) {
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if (nsnull != aCopy.mValue.mString) {
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mValue.mString = nsCRT::strdup(aCopy.mValue.mString);
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}
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else {
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mValue.mString = nsnull;
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}
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}
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else if ((eCSSUnit_Integer <= mUnit) && (mUnit <= eCSSUnit_Enumerated)) {
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mValue.mInt = aCopy.mValue.mInt;
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}
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else if (eCSSUnit_Color == mUnit){
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mValue.mColor = aCopy.mValue.mColor;
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}
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else if (eCSSUnit_URL == mUnit){
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mValue.mURL = aCopy.mValue.mURL;
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mValue.mURL->AddRef();
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}
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else if (eCSSUnit_Image == mUnit){
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mValue.mImage = aCopy.mValue.mImage;
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mValue.mImage->AddRef();
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}
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else {
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mValue.mFloat = aCopy.mValue.mFloat;
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}
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}
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nsCSSValue::~nsCSSValue()
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{
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Reset();
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}
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nsCSSValue& nsCSSValue::operator=(const nsCSSValue& aCopy)
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{
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Reset();
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mUnit = aCopy.mUnit;
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if ((eCSSUnit_String <= mUnit) && (mUnit <= eCSSUnit_Counters)) {
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if (nsnull != aCopy.mValue.mString) {
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mValue.mString = nsCRT::strdup(aCopy.mValue.mString);
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}
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}
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else if ((eCSSUnit_Integer <= mUnit) && (mUnit <= eCSSUnit_Enumerated)) {
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mValue.mInt = aCopy.mValue.mInt;
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}
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else if (eCSSUnit_Color == mUnit){
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mValue.mColor = aCopy.mValue.mColor;
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}
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else if (eCSSUnit_URL == mUnit){
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mValue.mURL = aCopy.mValue.mURL;
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mValue.mURL->AddRef();
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}
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else if (eCSSUnit_Image == mUnit){
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mValue.mImage = aCopy.mValue.mImage;
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mValue.mImage->AddRef();
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}
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else {
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mValue.mFloat = aCopy.mValue.mFloat;
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}
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return *this;
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}
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PRBool nsCSSValue::operator==(const nsCSSValue& aOther) const
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{
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if (mUnit == aOther.mUnit) {
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if ((eCSSUnit_String <= mUnit) && (mUnit <= eCSSUnit_Counters)) {
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if (nsnull == mValue.mString) {
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if (nsnull == aOther.mValue.mString) {
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return PR_TRUE;
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}
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}
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else if (nsnull != aOther.mValue.mString) {
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return (nsCRT::strcmp(mValue.mString, aOther.mValue.mString) == 0);
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}
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}
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else if ((eCSSUnit_Integer <= mUnit) && (mUnit <= eCSSUnit_Enumerated)) {
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return mValue.mInt == aOther.mValue.mInt;
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}
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else if (eCSSUnit_Color == mUnit) {
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return mValue.mColor == aOther.mValue.mColor;
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}
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else if (eCSSUnit_URL == mUnit) {
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return *mValue.mURL == *aOther.mValue.mURL;
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}
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else if (eCSSUnit_Image == mUnit) {
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return *mValue.mImage == *aOther.mValue.mImage;
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}
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else {
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return mValue.mFloat == aOther.mValue.mFloat;
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}
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}
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return PR_FALSE;
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}
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imgIRequest* nsCSSValue::GetImageValue() const
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{
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NS_ASSERTION(mUnit == eCSSUnit_Image, "not an Image value");
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return mValue.mImage->mRequest;
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}
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nscoord nsCSSValue::GetLengthTwips() const
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{
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NS_ASSERTION(IsFixedLengthUnit(), "not a fixed length unit");
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if (IsFixedLengthUnit()) {
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switch (mUnit) {
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case eCSSUnit_Inch:
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return NS_INCHES_TO_TWIPS(mValue.mFloat);
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case eCSSUnit_Foot:
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return NS_FEET_TO_TWIPS(mValue.mFloat);
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case eCSSUnit_Mile:
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return NS_MILES_TO_TWIPS(mValue.mFloat);
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case eCSSUnit_Millimeter:
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return NS_MILLIMETERS_TO_TWIPS(mValue.mFloat);
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case eCSSUnit_Centimeter:
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return NS_CENTIMETERS_TO_TWIPS(mValue.mFloat);
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case eCSSUnit_Meter:
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return NS_METERS_TO_TWIPS(mValue.mFloat);
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case eCSSUnit_Kilometer:
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return NS_KILOMETERS_TO_TWIPS(mValue.mFloat);
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case eCSSUnit_Point:
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return NSFloatPointsToTwips(mValue.mFloat);
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case eCSSUnit_Pica:
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return NS_PICAS_TO_TWIPS(mValue.mFloat);
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case eCSSUnit_Didot:
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return NS_DIDOTS_TO_TWIPS(mValue.mFloat);
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case eCSSUnit_Cicero:
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return NS_CICEROS_TO_TWIPS(mValue.mFloat);
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default:
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NS_ERROR("should never get here");
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break;
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}
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}
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return 0;
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}
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void nsCSSValue::SetIntValue(PRInt32 aValue, nsCSSUnit aUnit)
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{
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NS_ASSERTION((eCSSUnit_Integer == aUnit) ||
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(eCSSUnit_Enumerated == aUnit), "not an int value");
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Reset();
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if ((eCSSUnit_Integer == aUnit) ||
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(eCSSUnit_Enumerated == aUnit)) {
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mUnit = aUnit;
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mValue.mInt = aValue;
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}
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}
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void nsCSSValue::SetPercentValue(float aValue)
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{
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Reset();
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mUnit = eCSSUnit_Percent;
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mValue.mFloat = aValue;
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}
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void nsCSSValue::SetFloatValue(float aValue, nsCSSUnit aUnit)
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{
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NS_ASSERTION(eCSSUnit_Number <= aUnit, "not a float value");
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Reset();
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if (eCSSUnit_Number <= aUnit) {
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mUnit = aUnit;
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mValue.mFloat = aValue;
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}
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}
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void nsCSSValue::SetStringValue(const nsAString& aValue,
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nsCSSUnit aUnit)
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{
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NS_ASSERTION((eCSSUnit_String <= aUnit) && (aUnit <= eCSSUnit_Counters), "not a string unit");
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Reset();
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if ((eCSSUnit_String <= aUnit) && (aUnit <= eCSSUnit_Counters)) {
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mUnit = aUnit;
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mValue.mString = ToNewUnicode(aValue);
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}
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}
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void nsCSSValue::SetColorValue(nscolor aValue)
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{
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Reset();
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mUnit = eCSSUnit_Color;
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mValue.mColor = aValue;
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}
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void nsCSSValue::SetURLValue(nsCSSValue::URL* aValue)
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{
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Reset();
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mUnit = eCSSUnit_URL;
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mValue.mURL = aValue;
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mValue.mURL->AddRef();
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}
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void nsCSSValue::SetImageValue(nsCSSValue::Image* aValue)
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{
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Reset();
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mUnit = eCSSUnit_Image;
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mValue.mImage = aValue;
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mValue.mImage->AddRef();
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}
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void nsCSSValue::SetAutoValue()
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{
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Reset();
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mUnit = eCSSUnit_Auto;
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}
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void nsCSSValue::SetInheritValue()
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{
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Reset();
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mUnit = eCSSUnit_Inherit;
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}
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void nsCSSValue::SetInitialValue()
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{
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Reset();
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mUnit = eCSSUnit_Initial;
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}
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void nsCSSValue::SetNoneValue()
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{
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Reset();
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mUnit = eCSSUnit_None;
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}
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void nsCSSValue::SetNormalValue()
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{
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Reset();
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mUnit = eCSSUnit_Normal;
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}
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void nsCSSValue::StartImageLoad(nsIDocument* aDocument) const
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{
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NS_PRECONDITION(eCSSUnit_URL == mUnit, "Not a URL value!");
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nsCSSValue::Image* image =
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new nsCSSValue::Image(mValue.mURL->mURI,
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mValue.mURL->mString,
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aDocument);
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if (image) {
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if (image->mString) {
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nsCSSValue* writable = NS_CONST_CAST(nsCSSValue*, this);
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writable->SetImageValue(image);
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} else {
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delete image;
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}
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}
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}
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nsCSSValue::Image::Image(nsIURI* aURI, const PRUnichar* aString,
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nsIDocument* aDocument)
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: URL(aURI, aString)
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{
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MOZ_COUNT_CTOR(nsCSSValue::Image);
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// Check for failed mString allocation first
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if (!mString)
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return;
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// If Paint Forcing is enabled, then force all background image loads to
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// complete before firing onload for the document
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static PRInt32 loadFlag = PR_GetEnv("MOZ_FORCE_PAINT_AFTER_ONLOAD")
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? (PRInt32)nsIRequest::LOAD_NORMAL
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: (PRInt32)nsIRequest::LOAD_BACKGROUND;
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if (mURI &&
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NS_SUCCEEDED(nsContentUtils::CanLoadImage(mURI, nsnull, aDocument))) {
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nsContentUtils::LoadImage(mURI, aDocument, nsnull,
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loadFlag,
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getter_AddRefs(mRequest));
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}
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}
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nsCSSValue::Image::~Image()
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{
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MOZ_COUNT_DTOR(nsCSSValue::Image);
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}
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#ifdef DEBUG
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void nsCSSValue::AppendToString(nsAString& aBuffer,
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nsCSSProperty aPropID) const
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{
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if (eCSSUnit_Null == mUnit) {
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return;
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}
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if (-1 < aPropID) {
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AppendASCIItoUTF16(nsCSSProps::GetStringValue(aPropID), aBuffer);
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aBuffer.Append(NS_LITERAL_STRING(": "));
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}
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switch (mUnit) {
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case eCSSUnit_Image:
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case eCSSUnit_URL: aBuffer.Append(NS_LITERAL_STRING("url(")); break;
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case eCSSUnit_Attr: aBuffer.Append(NS_LITERAL_STRING("attr(")); break;
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case eCSSUnit_Counter: aBuffer.Append(NS_LITERAL_STRING("counter(")); break;
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case eCSSUnit_Counters: aBuffer.Append(NS_LITERAL_STRING("counters(")); break;
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default: break;
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}
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if ((eCSSUnit_String <= mUnit) && (mUnit <= eCSSUnit_Counters)) {
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if (nsnull != mValue.mString) {
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aBuffer.Append(PRUnichar('"'));
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aBuffer.Append(mValue.mString);
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aBuffer.Append(PRUnichar('"'));
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}
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else {
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aBuffer.Append(NS_LITERAL_STRING("null str"));
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}
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}
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else if ((eCSSUnit_Integer <= mUnit) && (mUnit <= eCSSUnit_Enumerated)) {
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nsAutoString intStr;
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intStr.AppendInt(mValue.mInt, 10);
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aBuffer.Append(intStr);
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aBuffer.Append(NS_LITERAL_STRING("[0x"));
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intStr.Truncate();
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intStr.AppendInt(mValue.mInt, 16);
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aBuffer.Append(intStr);
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aBuffer.Append(PRUnichar(']'));
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}
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else if (eCSSUnit_Color == mUnit) {
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aBuffer.Append(NS_LITERAL_STRING("(0x"));
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nsAutoString intStr;
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intStr.AppendInt(NS_GET_R(mValue.mColor), 16);
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aBuffer.Append(intStr);
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aBuffer.Append(NS_LITERAL_STRING(" 0x"));
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intStr.Truncate();
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intStr.AppendInt(NS_GET_G(mValue.mColor), 16);
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aBuffer.Append(intStr);
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aBuffer.Append(NS_LITERAL_STRING(" 0x"));
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intStr.Truncate();
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intStr.AppendInt(NS_GET_B(mValue.mColor), 16);
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aBuffer.Append(intStr);
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aBuffer.Append(NS_LITERAL_STRING(" 0x"));
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intStr.Truncate();
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intStr.AppendInt(NS_GET_A(mValue.mColor), 16);
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aBuffer.Append(intStr);
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aBuffer.Append(PRUnichar(')'));
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}
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else if (eCSSUnit_URL == mUnit) {
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aBuffer.Append(mValue.mURL->mString);
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}
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else if (eCSSUnit_Image == mUnit) {
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aBuffer.Append(mValue.mImage->mString);
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}
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else if (eCSSUnit_Percent == mUnit) {
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nsAutoString floatString;
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floatString.AppendFloat(mValue.mFloat * 100.0f);
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aBuffer.Append(floatString);
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}
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else if (eCSSUnit_Percent < mUnit) {
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nsAutoString floatString;
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floatString.AppendFloat(mValue.mFloat);
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aBuffer.Append(floatString);
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}
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switch (mUnit) {
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case eCSSUnit_Null: break;
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case eCSSUnit_Auto: aBuffer.Append(NS_LITERAL_STRING("auto")); break;
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case eCSSUnit_Inherit: aBuffer.Append(NS_LITERAL_STRING("inherit")); break;
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case eCSSUnit_Initial: aBuffer.Append(NS_LITERAL_STRING("initial")); break;
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case eCSSUnit_None: aBuffer.Append(NS_LITERAL_STRING("none")); break;
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case eCSSUnit_Normal: aBuffer.Append(NS_LITERAL_STRING("normal")); break;
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case eCSSUnit_String: break;
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case eCSSUnit_URL:
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case eCSSUnit_Image:
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case eCSSUnit_Attr:
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case eCSSUnit_Counter:
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case eCSSUnit_Counters: aBuffer.Append(NS_LITERAL_STRING(")")); break;
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case eCSSUnit_Integer: aBuffer.Append(NS_LITERAL_STRING("int")); break;
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case eCSSUnit_Enumerated: aBuffer.Append(NS_LITERAL_STRING("enum")); break;
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case eCSSUnit_Color: aBuffer.Append(NS_LITERAL_STRING("rbga")); break;
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case eCSSUnit_Percent: aBuffer.Append(NS_LITERAL_STRING("%")); break;
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|
case eCSSUnit_Number: aBuffer.Append(NS_LITERAL_STRING("#")); break;
|
|
case eCSSUnit_Inch: aBuffer.Append(NS_LITERAL_STRING("in")); break;
|
|
case eCSSUnit_Foot: aBuffer.Append(NS_LITERAL_STRING("ft")); break;
|
|
case eCSSUnit_Mile: aBuffer.Append(NS_LITERAL_STRING("mi")); break;
|
|
case eCSSUnit_Millimeter: aBuffer.Append(NS_LITERAL_STRING("mm")); break;
|
|
case eCSSUnit_Centimeter: aBuffer.Append(NS_LITERAL_STRING("cm")); break;
|
|
case eCSSUnit_Meter: aBuffer.Append(NS_LITERAL_STRING("m")); break;
|
|
case eCSSUnit_Kilometer: aBuffer.Append(NS_LITERAL_STRING("km")); break;
|
|
case eCSSUnit_Point: aBuffer.Append(NS_LITERAL_STRING("pt")); break;
|
|
case eCSSUnit_Pica: aBuffer.Append(NS_LITERAL_STRING("pc")); break;
|
|
case eCSSUnit_Didot: aBuffer.Append(NS_LITERAL_STRING("dt")); break;
|
|
case eCSSUnit_Cicero: aBuffer.Append(NS_LITERAL_STRING("cc")); break;
|
|
case eCSSUnit_EM: aBuffer.Append(NS_LITERAL_STRING("em")); break;
|
|
case eCSSUnit_EN: aBuffer.Append(NS_LITERAL_STRING("en")); break;
|
|
case eCSSUnit_XHeight: aBuffer.Append(NS_LITERAL_STRING("ex")); break;
|
|
case eCSSUnit_CapHeight: aBuffer.Append(NS_LITERAL_STRING("cap")); break;
|
|
case eCSSUnit_Char: aBuffer.Append(NS_LITERAL_STRING("ch")); break;
|
|
case eCSSUnit_Pixel: aBuffer.Append(NS_LITERAL_STRING("px")); break;
|
|
case eCSSUnit_Proportional: aBuffer.Append(NS_LITERAL_STRING("*")); break;
|
|
case eCSSUnit_Degree: aBuffer.Append(NS_LITERAL_STRING("deg")); break;
|
|
case eCSSUnit_Grad: aBuffer.Append(NS_LITERAL_STRING("grad")); break;
|
|
case eCSSUnit_Radian: aBuffer.Append(NS_LITERAL_STRING("rad")); break;
|
|
case eCSSUnit_Hertz: aBuffer.Append(NS_LITERAL_STRING("Hz")); break;
|
|
case eCSSUnit_Kilohertz: aBuffer.Append(NS_LITERAL_STRING("kHz")); break;
|
|
case eCSSUnit_Seconds: aBuffer.Append(NS_LITERAL_STRING("s")); break;
|
|
case eCSSUnit_Milliseconds: aBuffer.Append(NS_LITERAL_STRING("ms")); break;
|
|
}
|
|
aBuffer.Append(NS_LITERAL_STRING(" "));
|
|
}
|
|
|
|
void nsCSSValue::ToString(nsAString& aBuffer,
|
|
nsCSSProperty aPropID) const
|
|
{
|
|
aBuffer.Truncate();
|
|
AppendToString(aBuffer, aPropID);
|
|
}
|
|
|
|
#endif /* defined(DEBUG) */
|