pjs/layout/style/nsDOMCSSValueList.cpp

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4.2 KiB
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/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 2002
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Christopher A. Aillon <christopher@aillon.com> (original author)
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
/* DOM object representing lists of values in DOM computed style */
#include "nsDOMCSSValueList.h"
#include "nsCOMPtr.h"
#include "nsDOMError.h"
#include "prtypes.h"
#include "nsContentUtils.h"
nsDOMCSSValueList::nsDOMCSSValueList(PRBool aCommaDelimited, PRBool aReadonly)
: mCommaDelimited(aCommaDelimited), mReadonly(aReadonly)
{
}
nsDOMCSSValueList::~nsDOMCSSValueList()
{
}
NS_IMPL_ADDREF(nsDOMCSSValueList)
NS_IMPL_RELEASE(nsDOMCSSValueList)
// QueryInterface implementation for nsDOMCSSValueList
NS_INTERFACE_MAP_BEGIN(nsDOMCSSValueList)
NS_INTERFACE_MAP_ENTRY(nsIDOMCSSValueList)
NS_INTERFACE_MAP_ENTRY(nsIDOMCSSValue)
NS_INTERFACE_MAP_ENTRY(nsISupports)
NS_INTERFACE_MAP_ENTRY_CONTENT_CLASSINFO(CSSValueList)
NS_INTERFACE_MAP_END
PRBool
nsDOMCSSValueList::AppendCSSValue(nsIDOMCSSValue* aValue)
{
return mCSSValues.AppendObject(aValue);
}
// nsIDOMCSSValueList
NS_IMETHODIMP
nsDOMCSSValueList::GetLength(PRUint32* aLength)
{
*aLength = mCSSValues.Count();
return NS_OK;
}
NS_IMETHODIMP
nsDOMCSSValueList::Item(PRUint32 aIndex, nsIDOMCSSValue **aReturn)
{
NS_ENSURE_ARG_POINTER(aReturn);
NS_IF_ADDREF(*aReturn = GetItemAt(aIndex));
return NS_OK;
}
// nsIDOMCSSValue
NS_IMETHODIMP
nsDOMCSSValueList::GetCssText(nsAString& aCssText)
{
aCssText.Truncate();
PRUint32 count = mCSSValues.Count();
nsAutoString separator;
if (mCommaDelimited) {
separator.AssignLiteral(", ");
}
else {
separator.Assign(PRUnichar(' '));
}
nsCOMPtr<nsIDOMCSSValue> cssValue;
nsAutoString tmpStr;
for (PRUint32 i = 0; i < count; ++i) {
cssValue = mCSSValues[i];
NS_ASSERTION(cssValue, "Eek! Someone filled the value list with null CSSValues!");
if (cssValue) {
cssValue->GetCssText(tmpStr);
if (tmpStr.IsEmpty()) {
#ifdef DEBUG_caillon
NS_ERROR("Eek! An empty CSSValue! Bad!");
#endif
continue;
}
// If this isn't the first item in the list, then
// it's ok to append a separator.
if (!aCssText.IsEmpty()) {
aCssText.Append(separator);
}
aCssText.Append(tmpStr);
}
}
return NS_OK;
}
NS_IMETHODIMP
nsDOMCSSValueList::SetCssText(const nsAString& aCssText)
{
if (mReadonly) {
return NS_ERROR_DOM_NO_MODIFICATION_ALLOWED_ERR;
}
NS_NOTYETIMPLEMENTED("Can't SetCssText yet: please write me!");
return NS_OK;
}
NS_IMETHODIMP
nsDOMCSSValueList::GetCssValueType(PRUint16* aValueType)
{
NS_ENSURE_ARG_POINTER(aValueType);
*aValueType = nsIDOMCSSValue::CSS_VALUE_LIST;
return NS_OK;
}