gecko-dev/layout/style/nsDOMCSSValueList.cpp
2012-05-21 12:12:37 +01:00

127 lines
2.7 KiB
C++

/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
/* 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(bool aCommaDelimited, bool aReadonly)
: mCommaDelimited(aCommaDelimited), mReadonly(aReadonly)
{
}
nsDOMCSSValueList::~nsDOMCSSValueList()
{
}
NS_IMPL_ADDREF(nsDOMCSSValueList)
NS_IMPL_RELEASE(nsDOMCSSValueList)
DOMCI_DATA(CSSValueList, 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_DOM_INTERFACE_MAP_ENTRY_CLASSINFO(CSSValueList)
NS_INTERFACE_MAP_END
void
nsDOMCSSValueList::AppendCSSValue(nsIDOMCSSValue* aValue)
{
mCSSValues.AppendElement(aValue);
}
// nsIDOMCSSValueList
NS_IMETHODIMP
nsDOMCSSValueList::GetLength(PRUint32* aLength)
{
*aLength = mCSSValues.Length();
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.Length();
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;
}