mirror of
https://github.com/mozilla/gecko-dev.git
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299 lines
8.8 KiB
C++
299 lines
8.8 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 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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*
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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 "nsDOMCSSDeclaration.h"
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#include "nsIDOMCSSRule.h"
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#include "nsICSSParser.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 "nsContentUtils.h"
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nsDOMCSSDeclaration::nsDOMCSSDeclaration()
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: mInner(nsnull)
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{
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}
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nsDOMCSSDeclaration::~nsDOMCSSDeclaration()
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{
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}
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NS_IMETHODIMP
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nsDOMCSSDeclaration::QueryInterface(REFNSIID aIID, void** aInstancePtr)
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{
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if (!aInstancePtr) {
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NS_ERROR("QueryInterface requires a non-NULL destination!");
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return NS_ERROR_NULL_POINTER;
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}
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nsISupports* inst;
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if (aIID.Equals(NS_GET_IID(nsIDOMCSSStyleDeclaration))) {
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inst = NS_STATIC_CAST(nsIDOMCSSStyleDeclaration*, this);
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} else if (aIID.Equals(NS_GET_IID(nsIDOMCSS2Properties))) {
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if (!mInner) {
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mInner = new CSS2PropertiesTearoff(this);
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NS_ENSURE_TRUE(mInner, NS_ERROR_OUT_OF_MEMORY);
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}
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inst = NS_STATIC_CAST(nsIDOMCSS2Properties*,
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NS_STATIC_CAST(nsISupports*, mInner));
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} else if (aIID.Equals(NS_GET_IID(nsIDOMNSCSS2Properties))) {
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if (!mInner) {
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mInner = new CSS2PropertiesTearoff(this);
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NS_ENSURE_TRUE(mInner, NS_ERROR_OUT_OF_MEMORY);
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}
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inst = NS_STATIC_CAST(nsIDOMNSCSS2Properties*,
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NS_STATIC_CAST(nsISupports*, mInner));
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} else if (aIID.Equals(NS_GET_IID(nsISupports))) {
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inst = NS_STATIC_CAST(nsISupports*,
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NS_STATIC_CAST(nsIDOMCSSStyleDeclaration*, this));
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} else if (aIID.Equals(NS_GET_IID(nsIClassInfo))) {
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inst = nsContentUtils::GetClassInfoInstance(eDOMClassInfo_CSSStyleDeclaration_id);
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NS_ENSURE_TRUE(inst, NS_ERROR_OUT_OF_MEMORY);
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} else {
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inst = nsnull;
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}
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nsresult rv;
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if (!inst) {
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rv = NS_NOINTERFACE;
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} else {
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NS_ADDREF(inst);
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rv = NS_OK;
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}
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*aInstancePtr = inst;
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return rv;
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}
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NS_IMPL_ADDREF(nsDOMCSSDeclaration);
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NS_IMPL_RELEASE(nsDOMCSSDeclaration);
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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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NS_ASSERTION(decl, "null CSSDeclaration");
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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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*aLength = 0;
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if ((NS_OK == result) && (nsnull != decl)) {
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*aLength = decl->Count();
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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::GetParentRule(nsIDOMCSSRule** aParentRule)
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{
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NS_ENSURE_ARG_POINTER(aParentRule);
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*aParentRule = nsnull;
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nsCOMPtr<nsISupports> parent;
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GetParent(getter_AddRefs(parent));
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if (parent) {
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CallQueryInterface(parent, aParentRule);
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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::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 ((NS_OK == result) && (nsnull != 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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nsCSSValue val;
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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 ((NS_OK == result) && (nsnull != decl)) {
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result = decl->GetValue(aPropertyName, 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::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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PRBool isImportant = PR_FALSE;
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if ((NS_OK == result) && (nsnull != decl)) {
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isImportant = decl->GetValueIsImportant(aPropertyName);
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}
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if ((NS_OK == result) && isImportant) {
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aReturn.Assign(NS_LITERAL_STRING("important"));
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}
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else {
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aReturn.SetLength(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::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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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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nsAutoString tmp;
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return RemoveProperty(aPropertyName, tmp);
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}
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if (aPriority.IsEmpty()) {
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return ParsePropertyValue(aPropertyName, aValue);
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}
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// ParsePropertyValue does not handle priorities correctly -- it's
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// optimized for speed. And the priority is not part of the
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// property value anyway.... So we have to use the full-blown
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// ParseDeclaration()
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return ParseDeclaration(aPropertyName + NS_LITERAL_STRING(":") +
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aValue + NS_LITERAL_STRING("!") + aPriority,
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PR_TRUE, PR_FALSE);
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}
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//////////////////////////////////////////////////////////////////////////////
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CSS2PropertiesTearoff::CSS2PropertiesTearoff(nsISupports *aOuter)
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{
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NS_INIT_AGGREGATED(aOuter);
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}
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CSS2PropertiesTearoff::~CSS2PropertiesTearoff()
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{
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}
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NS_IMPL_AGGREGATED(CSS2PropertiesTearoff);
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NS_INTERFACE_MAP_BEGIN_AGGREGATED(CSS2PropertiesTearoff)
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NS_INTERFACE_MAP_ENTRY(nsIDOMCSS2Properties)
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NS_INTERFACE_MAP_ENTRY(nsIDOMNSCSS2Properties)
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NS_INTERFACE_MAP_END_AGGREGATED(fOuter)
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// nsIDOMCSS2Properties
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// nsIDOMNSCSS2Properties
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#define CSS_PROP(name_, id_, method_, hint_) \
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NS_IMETHODIMP \
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CSS2PropertiesTearoff::Get##method_(nsAString& aValue) \
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{ \
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return NS_STATIC_CAST(nsIDOMCSSStyleDeclaration*, fOuter)-> \
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GetPropertyValue(NS_LITERAL_STRING(#name_), 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 NS_STATIC_CAST(nsIDOMCSSStyleDeclaration*, fOuter)-> \
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SetProperty(NS_LITERAL_STRING(#name_), aValue, \
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NS_LITERAL_STRING("")); \
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}
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#define CSS_PROP_INTERNAL(name_, id_, method_, hint_) /* nothing */
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#define CSS_PROP_NOTIMPLEMENTED(name_, id_, method_, hint_) \
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CSS_PROP(name_, id_, method_, hint_)
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#include "nsCSSPropList.h"
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#undef CSS_PROP_INTERNAL
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#undef CSS_PROP
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