mirror of
https://github.com/mozilla/gecko-dev.git
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425 lines
14 KiB
C++
425 lines
14 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 Communicator client 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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* Mats Palmgren <mats.palmgren@bredband.net>
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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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/* base class for DOM objects for element.style and cssStyleRule.style */
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#include "nsDOMCSSDeclaration.h"
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#include "nsIDOMCSSRule.h"
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#include "nsCSSParser.h"
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#include "nsCSSLoader.h"
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#include "nsIStyleRule.h"
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#include "nsCSSDeclaration.h"
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#include "nsCSSProps.h"
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#include "nsCOMPtr.h"
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#include "nsIURL.h"
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#include "nsReadableUtils.h"
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#include "nsIPrincipal.h"
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#include "nsContentUtils.h"
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#include "mozAutoDocUpdate.h"
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namespace css = mozilla::css;
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nsDOMCSSDeclaration::~nsDOMCSSDeclaration()
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{
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}
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DOMCI_DATA(CSSStyleDeclaration, nsDOMCSSDeclaration)
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NS_INTERFACE_TABLE_HEAD(nsDOMCSSDeclaration)
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NS_OFFSET_AND_INTERFACE_TABLE_BEGIN(nsDOMCSSDeclaration)
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NS_INTERFACE_TABLE_ENTRY(nsDOMCSSDeclaration, nsICSSDeclaration)
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NS_INTERFACE_TABLE_ENTRY(nsDOMCSSDeclaration, nsIDOMCSSStyleDeclaration)
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NS_INTERFACE_TABLE_ENTRY(nsDOMCSSDeclaration, nsISupports)
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NS_OFFSET_AND_INTERFACE_TABLE_END
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NS_OFFSET_AND_INTERFACE_TABLE_TO_MAP_SEGUE
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NS_INTERFACE_MAP_ENTRY_AGGREGATED(nsIDOMCSS2Properties,
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new CSS2PropertiesTearoff(this))
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NS_INTERFACE_MAP_ENTRY_AGGREGATED(nsIDOMSVGCSS2Properties,
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new CSS2PropertiesTearoff(this))
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NS_INTERFACE_MAP_ENTRY_AGGREGATED(nsIDOMNSCSS2Properties,
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new CSS2PropertiesTearoff(this))
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NS_DOM_INTERFACE_MAP_ENTRY_CLASSINFO(CSSStyleDeclaration)
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NS_INTERFACE_MAP_END
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NS_IMETHODIMP
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nsDOMCSSDeclaration::GetPropertyValue(const nsCSSProperty aPropID,
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nsAString& aValue)
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{
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NS_PRECONDITION(aPropID != eCSSProperty_UNKNOWN,
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"Should never pass eCSSProperty_UNKNOWN around");
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nsCSSDeclaration *decl;
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nsresult result = GetCSSDeclaration(&decl, PR_FALSE);
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aValue.Truncate();
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if (decl) {
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result = decl->GetValue(aPropID, aValue);
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}
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return result;
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}
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NS_IMETHODIMP
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nsDOMCSSDeclaration::SetPropertyValue(const nsCSSProperty aPropID,
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const nsAString& aValue)
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{
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if (aValue.IsEmpty()) {
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// If the new value of the property is an empty string we remove the
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// property.
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return RemoveProperty(aPropID);
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}
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return ParsePropertyValue(aPropID, aValue, PR_FALSE);
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}
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NS_IMETHODIMP
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nsDOMCSSDeclaration::GetCssText(nsAString& aCssText)
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{
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nsCSSDeclaration* decl;
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aCssText.Truncate();
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GetCSSDeclaration(&decl, PR_FALSE);
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if (decl) {
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decl->ToString(aCssText);
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}
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return NS_OK;
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}
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NS_IMETHODIMP
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nsDOMCSSDeclaration::SetCssText(const nsAString& aCssText)
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{
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return ParseDeclaration(aCssText, PR_FALSE, PR_TRUE);
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}
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NS_IMETHODIMP
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nsDOMCSSDeclaration::GetLength(PRUint32* aLength)
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{
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nsCSSDeclaration *decl;
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nsresult result = GetCSSDeclaration(&decl, PR_FALSE);
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if (decl) {
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*aLength = decl->Count();
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} else {
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*aLength = 0;
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}
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return result;
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}
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NS_IMETHODIMP
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nsDOMCSSDeclaration::GetPropertyCSSValue(const nsAString& aPropertyName,
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nsIDOMCSSValue** aReturn)
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{
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NS_ENSURE_ARG_POINTER(aReturn);
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// We don't support CSSValue yet so we'll just return null...
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*aReturn = nsnull;
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return NS_OK;
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}
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NS_IMETHODIMP
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nsDOMCSSDeclaration::Item(PRUint32 aIndex, nsAString& aReturn)
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{
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nsCSSDeclaration *decl;
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nsresult result = GetCSSDeclaration(&decl, PR_FALSE);
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aReturn.SetLength(0);
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if (decl) {
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result = decl->GetNthProperty(aIndex, aReturn);
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}
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return result;
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}
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NS_IMETHODIMP
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nsDOMCSSDeclaration::GetPropertyValue(const nsAString& aPropertyName,
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nsAString& aReturn)
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{
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const nsCSSProperty propID = nsCSSProps::LookupProperty(aPropertyName);
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if (propID == eCSSProperty_UNKNOWN) {
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aReturn.Truncate();
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return NS_OK;
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}
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return GetPropertyValue(propID, aReturn);
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}
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NS_IMETHODIMP
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nsDOMCSSDeclaration::GetPropertyPriority(const nsAString& aPropertyName,
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nsAString& aReturn)
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{
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nsCSSDeclaration *decl;
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nsresult result = GetCSSDeclaration(&decl, PR_FALSE);
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aReturn.Truncate();
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if (decl && decl->GetValueIsImportant(aPropertyName)) {
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aReturn.AssignLiteral("important");
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}
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return result;
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}
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NS_IMETHODIMP
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nsDOMCSSDeclaration::SetProperty(const nsAString& aPropertyName,
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const nsAString& aValue,
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const nsAString& aPriority)
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{
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// In the common (and fast) cases we can use the property id
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nsCSSProperty propID = nsCSSProps::LookupProperty(aPropertyName);
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if (propID == eCSSProperty_UNKNOWN) {
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return NS_OK;
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}
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if (aValue.IsEmpty()) {
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// If the new value of the property is an empty string we remove the
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// property.
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// XXX this ignores the priority string, should it?
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return RemoveProperty(propID);
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}
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if (aPriority.IsEmpty()) {
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return ParsePropertyValue(propID, aValue, PR_FALSE);
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}
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if (aPriority.EqualsLiteral("important")) {
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return ParsePropertyValue(propID, aValue, PR_TRUE);
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}
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// XXX silent failure?
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return NS_OK;
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}
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NS_IMETHODIMP
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nsDOMCSSDeclaration::RemoveProperty(const nsAString& aPropertyName,
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nsAString& aReturn)
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{
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const nsCSSProperty propID = nsCSSProps::LookupProperty(aPropertyName);
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if (propID == eCSSProperty_UNKNOWN) {
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aReturn.Truncate();
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return NS_OK;
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}
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nsresult rv = GetPropertyValue(propID, aReturn);
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NS_ENSURE_SUCCESS(rv, rv);
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rv = RemoveProperty(propID);
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return rv;
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}
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nsresult
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nsDOMCSSDeclaration::ParsePropertyValue(const nsCSSProperty aPropID,
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const nsAString& aPropValue,
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PRBool aIsImportant)
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{
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nsCSSDeclaration* decl;
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nsresult result = GetCSSDeclaration(&decl, PR_TRUE);
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if (!decl) {
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return result;
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}
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nsRefPtr<css::Loader> cssLoader;
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nsCOMPtr<nsIURI> baseURI, sheetURI;
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nsCOMPtr<nsIPrincipal> sheetPrincipal;
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result = GetCSSParsingEnvironment(getter_AddRefs(sheetURI),
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getter_AddRefs(baseURI),
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getter_AddRefs(sheetPrincipal),
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getter_AddRefs(cssLoader));
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if (NS_FAILED(result)) {
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return result;
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}
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// For nsDOMCSSAttributeDeclaration, DeclarationChanged will lead to
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// Attribute setting code, which leads in turn to BeginUpdate. We
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// need to start the update now so that the old rule doesn't get used
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// between when we mutate the declaration and when we set the new
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// rule (see stack in bug 209575).
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mozAutoDocConditionalContentUpdateBatch autoUpdate(DocToUpdate(), PR_TRUE);
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nsCSSParser cssParser(cssLoader);
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PRBool changed;
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result = cssParser.ParseProperty(aPropID, aPropValue, sheetURI, baseURI,
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sheetPrincipal, decl, &changed,
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aIsImportant);
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if (NS_SUCCEEDED(result) && changed) {
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result = DeclarationChanged();
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}
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return result;
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}
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nsresult
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nsDOMCSSDeclaration::ParseDeclaration(const nsAString& aDecl,
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PRBool aParseOnlyOneDecl,
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PRBool aClearOldDecl)
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{
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nsCSSDeclaration* decl;
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nsresult result = GetCSSDeclaration(&decl, PR_TRUE);
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if (!decl) {
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return result;
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}
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nsRefPtr<css::Loader> cssLoader;
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nsCOMPtr<nsIURI> baseURI, sheetURI;
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nsCOMPtr<nsIPrincipal> sheetPrincipal;
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result = GetCSSParsingEnvironment(getter_AddRefs(sheetURI),
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getter_AddRefs(baseURI),
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getter_AddRefs(sheetPrincipal),
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getter_AddRefs(cssLoader));
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if (NS_FAILED(result)) {
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return result;
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}
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// For nsDOMCSSAttributeDeclaration, DeclarationChanged will lead to
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// Attribute setting code, which leads in turn to BeginUpdate. We
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// need to start the update now so that the old rule doesn't get used
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// between when we mutate the declaration and when we set the new
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// rule (see stack in bug 209575).
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mozAutoDocConditionalContentUpdateBatch autoUpdate(DocToUpdate(), PR_TRUE);
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nsCSSParser cssParser(cssLoader);
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PRBool changed;
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result = cssParser.ParseAndAppendDeclaration(aDecl, sheetURI, baseURI,
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sheetPrincipal, decl,
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aParseOnlyOneDecl,
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&changed,
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aClearOldDecl);
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if (NS_SUCCEEDED(result) && changed) {
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result = DeclarationChanged();
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}
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return result;
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}
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nsresult
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nsDOMCSSDeclaration::RemoveProperty(const nsCSSProperty aPropID)
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{
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nsCSSDeclaration* decl;
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nsresult rv = GetCSSDeclaration(&decl, PR_FALSE);
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if (!decl) {
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return rv;
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}
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// For nsDOMCSSAttributeDeclaration, DeclarationChanged will lead to
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// Attribute setting code, which leads in turn to BeginUpdate. We
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// need to start the update now so that the old rule doesn't get used
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// between when we mutate the declaration and when we set the new
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// rule (see stack in bug 209575).
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mozAutoDocConditionalContentUpdateBatch autoUpdate(DocToUpdate(), PR_TRUE);
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rv = decl->RemoveProperty(aPropID);
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if (NS_SUCCEEDED(rv)) {
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rv = DeclarationChanged();
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} else {
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// RemoveProperty used to throw in all sorts of situations -- e.g.
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// if the property was a shorthand one. Do not propagate its return
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// value to callers. (XXX or should we propagate it again now?)
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rv = NS_OK;
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}
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return rv;
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}
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//////////////////////////////////////////////////////////////////////////////
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CSS2PropertiesTearoff::CSS2PropertiesTearoff(nsICSSDeclaration *aOuter)
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: mOuter(aOuter)
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{
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NS_ASSERTION(mOuter, "must have outer");
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}
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CSS2PropertiesTearoff::~CSS2PropertiesTearoff()
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{
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}
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NS_IMPL_CYCLE_COLLECTION_1(CSS2PropertiesTearoff, mOuter)
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NS_IMPL_CYCLE_COLLECTING_ADDREF(CSS2PropertiesTearoff)
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NS_IMPL_CYCLE_COLLECTING_RELEASE(CSS2PropertiesTearoff)
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NS_INTERFACE_TABLE_HEAD(CSS2PropertiesTearoff)
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NS_INTERFACE_TABLE_INHERITED3(CSS2PropertiesTearoff,
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nsIDOMCSS2Properties,
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nsIDOMSVGCSS2Properties,
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nsIDOMNSCSS2Properties)
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NS_INTERFACE_TABLE_TO_MAP_SEGUE_CYCLE_COLLECTION(CSS2PropertiesTearoff)
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NS_INTERFACE_MAP_END_AGGREGATED(mOuter)
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// nsIDOMCSS2Properties
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// nsIDOMSVGCSS2Properties
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// nsIDOMNSCSS2Properties
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#define CSS_PROP(name_, id_, method_, flags_, datastruct_, member_, type_, \
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kwtable_, stylestruct_, stylestructoffset_, animtype_) \
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NS_IMETHODIMP \
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CSS2PropertiesTearoff::Get##method_(nsAString& aValue) \
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{ \
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return mOuter->GetPropertyValue(eCSSProperty_##id_, aValue); \
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} \
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\
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NS_IMETHODIMP \
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CSS2PropertiesTearoff::Set##method_(const nsAString& aValue) \
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{ \
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return mOuter->SetPropertyValue(eCSSProperty_##id_, aValue); \
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}
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#define CSS_PROP_LIST_EXCLUDE_INTERNAL
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#define CSS_PROP_SHORTHAND(name_, id_, method_, flags_) \
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CSS_PROP(name_, id_, method_, flags_, X, X, X, X, X, X, X)
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#include "nsCSSPropList.h"
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// Aliases
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CSS_PROP(X, opacity, MozOpacity, 0, X, X, X, X, X, X, X)
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CSS_PROP(X, outline, MozOutline, 0, X, X, X, X, X, X, X)
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CSS_PROP(X, outline_color, MozOutlineColor, 0, X, X, X, X, X, X, X)
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CSS_PROP(X, outline_style, MozOutlineStyle, 0, X, X, X, X, X, X, X)
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CSS_PROP(X, outline_width, MozOutlineWidth, 0, X, X, X, X, X, X, X)
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CSS_PROP(X, outline_offset, MozOutlineOffset, 0, X, X, X, X, X, X, X)
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#undef CSS_PROP_SHORTHAND
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#undef CSS_PROP_LIST_EXCLUDE_INTERNAL
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#undef CSS_PROP
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