gecko/layout/style/nsDOMCSSValueList.cpp

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2012-05-21 04:12:37 -07:00
/* 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 "mozilla/dom/CSSValueListBinding.h"
#include "nsAutoPtr.h"
using namespace mozilla;
nsDOMCSSValueList::nsDOMCSSValueList(bool aCommaDelimited, bool aReadonly)
: CSSValue(), mCommaDelimited(aCommaDelimited), mReadonly(aReadonly)
{
}
nsDOMCSSValueList::~nsDOMCSSValueList()
{
}
NS_IMPL_CYCLE_COLLECTING_ADDREF(nsDOMCSSValueList)
NS_IMPL_CYCLE_COLLECTING_RELEASE(nsDOMCSSValueList)
// QueryInterface implementation for nsDOMCSSValueList
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(nsDOMCSSValueList)
NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
NS_INTERFACE_MAP_ENTRY(nsIDOMCSSValue)
NS_INTERFACE_MAP_ENTRY(nsIDOMCSSValueList)
NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, CSSValue)
NS_INTERFACE_MAP_END
NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(nsDOMCSSValueList, mCSSValues)
JSObject*
nsDOMCSSValueList::WrapObject(JSContext *cx)
{
return dom::CSSValueListBinding::Wrap(cx, this);
}
void
nsDOMCSSValueList::AppendCSSValue(CSSValue* aValue)
{
mCSSValues.AppendElement(aValue);
}
// nsIDOMCSSValue
NS_IMETHODIMP
nsDOMCSSValueList::GetCssText(nsAString& aCssText)
{
aCssText.Truncate();
uint32_t count = mCSSValues.Length();
nsAutoString separator;
if (mCommaDelimited) {
separator.AssignLiteral(", ");
}
else {
separator.Assign(char16_t(' '));
}
nsAutoString tmpStr;
for (uint32_t i = 0; i < count; ++i) {
CSSValue *cssValue = mCSSValues[i];
NS_ASSERTION(cssValue, "Eek! Someone filled the value list with null CSSValues!");
ErrorResult dummy;
if (cssValue) {
cssValue->GetCssText(tmpStr, dummy);
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;
}
void
nsDOMCSSValueList::GetCssText(nsString& aText, ErrorResult& aRv)
{
aRv = GetCssText(aText);
}
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;
}
void
nsDOMCSSValueList::SetCssText(const nsAString& aText, ErrorResult& aRv)
{
aRv = SetCssText(aText);
}
NS_IMETHODIMP
nsDOMCSSValueList::GetCssValueType(uint16_t* aValueType)
{
NS_ENSURE_ARG_POINTER(aValueType);
*aValueType = nsIDOMCSSValue::CSS_VALUE_LIST;
return NS_OK;
}
uint16_t
nsDOMCSSValueList::CssValueType() const
{
return nsIDOMCSSValue::CSS_VALUE_LIST;
}