NS_IMETHODIMP ChangeCSSInlineStyleTxn::DoTransaction(void)
{
NS_ASSERTION(mEditor && mElement, "bad state");
if (!mEditor || !mElement) { return NS_ERROR_NOT_INITIALIZED; }
nsCOMPtr<nsIDOMElementCSSInlineStyle> inlineStyles = do_QueryInterface(mElement);
NS_ENSURE_TRUE(inlineStyles, NS_ERROR_NULL_POINTER);
nsCOMPtr<nsIDOMCSSStyleDeclaration> cssDecl;
nsresult result = inlineStyles->GetStyle(getter_AddRefs(cssDecl));
NS_ENSURE_SUCCESS(result, result);
NS_ENSURE_TRUE(cssDecl, NS_ERROR_NULL_POINTER);
nsAutoString propertyNameString;
mProperty->ToString(propertyNameString);
NS_NAMED_LITERAL_STRING(styleAttr, "style");
result = mElement->HasAttribute(styleAttr, &mUndoAttributeWasSet);
NS_ENSURE_SUCCESS(result, result);
nsAutoString values;
result = cssDecl->GetPropertyValue(propertyNameString, values);
NS_ENSURE_SUCCESS(result, result);
mUndoValue.Assign(values);
// does this property accept more than 1 value ?
// we need to know that because of bug 62682
bool multiple = AcceptsMoreThanOneValue(mProperty);
if (mRemoveProperty) {
nsAutoString returnString;
if (multiple) {
// the property can have more than one value, let's remove only
// the value we have to remove and not the others
// the 2 lines below are a workaround because nsDOMCSSDeclaration::GetPropertyCSSValue
// is not yet implemented (bug 62682)
RemoveValueFromListOfValues(values, NS_LITERAL_STRING("none"));
RemoveValueFromListOfValues(values, mValue);
if (values.IsEmpty()) {
result = cssDecl->RemoveProperty(propertyNameString, returnString);
NS_ENSURE_SUCCESS(result, result);
}
else {
nsAutoString priority;
result = cssDecl->GetPropertyPriority(propertyNameString, priority);
NS_ENSURE_SUCCESS(result, result);
result = cssDecl->SetProperty(propertyNameString, values,
priority);
NS_ENSURE_SUCCESS(result, result);
}
}
else {
result = cssDecl->RemoveProperty(propertyNameString, returnString);
NS_ENSURE_SUCCESS(result, result);
}
}
else {
nsAutoString priority;
result = cssDecl->GetPropertyPriority(propertyNameString, priority);
NS_ENSURE_SUCCESS(result, result);
if (multiple) {
// the property can have more than one value, let's add
// the value we have to add to the others
// the line below is a workaround because nsDOMCSSDeclaration::GetPropertyCSSValue
// is not yet implemented (bug 62682)
AddValueToMultivalueProperty(values, mValue);
}
else
values.Assign(mValue);
result = cssDecl->SetProperty(propertyNameString, values,
priority);
NS_ENSURE_SUCCESS(result, result);
}
// let's be sure we don't keep an empty style attribute
PRUint32 length;
result = cssDecl->GetLength(&length);
NS_ENSURE_SUCCESS(result, result);
if (!length) {
result = mElement->RemoveAttribute(styleAttr);
NS_ENSURE_SUCCESS(result, result);
}
else
mRedoAttributeWasSet = true;
return cssDecl->GetPropertyValue(propertyNameString, mRedoValue);
}
NS_IMETHODIMP
ChangeStyleTransaction::DoTransaction()
{
nsCOMPtr<nsStyledElement> inlineStyles = do_QueryInterface(mElement);
NS_ENSURE_TRUE(inlineStyles, NS_ERROR_NULL_POINTER);
nsCOMPtr<nsICSSDeclaration> cssDecl = inlineStyles->Style();
nsAutoString propertyNameString;
mProperty->ToString(propertyNameString);
mUndoAttributeWasSet = mElement->HasAttr(kNameSpaceID_None,
nsGkAtoms::style);
nsAutoString values;
nsresult rv = cssDecl->GetPropertyValue(propertyNameString, values);
NS_ENSURE_SUCCESS(rv, rv);
mUndoValue.Assign(values);
// Does this property accept more than one value? (bug 62682)
bool multiple = AcceptsMoreThanOneValue(*mProperty);
if (mRemoveProperty) {
nsAutoString returnString;
if (multiple) {
// Let's remove only the value we have to remove and not the others
// The two lines below are a workaround because
// nsDOMCSSDeclaration::GetPropertyCSSValue is not yet implemented (bug
// 62682)
RemoveValueFromListOfValues(values, NS_LITERAL_STRING("none"));
RemoveValueFromListOfValues(values, mValue);
if (values.IsEmpty()) {
rv = cssDecl->RemoveProperty(propertyNameString, returnString);
NS_ENSURE_SUCCESS(rv, rv);
} else {
nsAutoString priority;
cssDecl->GetPropertyPriority(propertyNameString, priority);
rv = cssDecl->SetProperty(propertyNameString, values, priority);
NS_ENSURE_SUCCESS(rv, rv);
}
} else {
rv = cssDecl->RemoveProperty(propertyNameString, returnString);
NS_ENSURE_SUCCESS(rv, rv);
}
} else {
nsAutoString priority;
cssDecl->GetPropertyPriority(propertyNameString, priority);
if (multiple) {
// Let's add the value we have to add to the others
// The line below is a workaround because
// nsDOMCSSDeclaration::GetPropertyCSSValue is not yet implemented (bug
// 62682)
AddValueToMultivalueProperty(values, mValue);
} else {
values.Assign(mValue);
}
rv = cssDecl->SetProperty(propertyNameString, values, priority);
NS_ENSURE_SUCCESS(rv, rv);
}
// Let's be sure we don't keep an empty style attribute
uint32_t length = cssDecl->Length();
if (!length) {
rv = mElement->UnsetAttr(kNameSpaceID_None, nsGkAtoms::style, true);
NS_ENSURE_SUCCESS(rv, rv);
} else {
mRedoAttributeWasSet = true;
}
return cssDecl->GetPropertyValue(propertyNameString, mRedoValue);
}