/*! Create a new AttrProp based upon the given one, adding or replacing the items given.
\return NULL on failure, the newly-created PP_AttrProp clone otherwise.
*/
PP_AttrProp * PP_AttrProp::cloneWithReplacements(const gchar ** attributes,
const gchar ** properties,
bool bClearProps) const
{
bool bIgnoreProps = false; // see below
// first, create a new AttrProp using just the values given.
PP_AttrProp * papNew = new PP_AttrProp();
if (!papNew)
goto Failed;
if (!papNew->setAttributes(attributes) || !papNew->setProperties(properties))
goto Failed;
// next, add any items that we have that are not present
// (have not been overridden) in the new one.
UT_uint32 k;
const gchar * n;
const gchar * v;
const gchar * vNew;
k = 0;
while (getNthAttribute(k++,n,v))
{
// TODO decide if/whether to allow PT_PROPS_ATTRIBUTE_NAME here.
// TODO The issue is: we use it to store the CSS properties and
// TODO when we see it, we expand the value into one or more
// TODO properties. if we allow it to be given here, should
// TODO we blowaway all of the existing properties and create
// TODO them from this? or should we expand it and override
// TODO individual properties?
// TODO for now, we just barf on it.
UT_return_val_if_fail (strcmp(n,PT_PROPS_ATTRIBUTE_NAME)!=0, false); // cannot handle PROPS here
if (!papNew->getAttribute(n,vNew))
if (!papNew->setAttribute(n,v))
goto Failed;
}
// we want to be able to remove all properties by setting the
// props attribute to ""; in order for that to work, we need to
// skip the following loop if props is set to ""
const gchar * szValue;
if(papNew->getAttribute("props", szValue) && !*szValue)
bIgnoreProps = true;
if (!bClearProps && !bIgnoreProps)
{
k = 0;
while (getNthProperty(k++,n,v))
{
if (!papNew->getProperty(n,vNew))
if (!papNew->setProperty(n,v))
goto Failed;
}
}
// the following will remove all properties set to ""; this allows us
// to remove properties by setting them to ""
papNew->_clearEmptyProperties();
papNew->_clearEmptyAttributes();
return papNew;
Failed:
DELETEP(papNew);
return NULL;
}
/*! Create a new AttrProp based upon the given one, removing the items given
if their value is equal to that given. See also PP_AttrProp::cloneWithElimination,
which does similarly but removes the items given regardless of whether or not
their value is equal to the value given.
\return NULL on failure, the newly-created PP_AttrProp clone otherwise.
*/
PP_AttrProp * PP_AttrProp::cloneWithEliminationIfEqual(const gchar ** attributes,
const gchar ** properties) const
{
// first, create an empty AttrProp.
PP_AttrProp * papNew = new PP_AttrProp();
if (!papNew)
goto Failed;
UT_uint32 k;
const gchar * n;
const gchar * v;
k = 0;
while (getNthAttribute(k++,n,v))
{
// for each attribute in the old set, add it to the
// new set only if it is not present in the given array.
if (attributes && *attributes)
{
const gchar ** p = attributes;
while (*p)
{
if(strcmp(p[0],PT_PROPS_ATTRIBUTE_NAME)!=0)
goto DoNotIncludeAttribute; // cannot handle PROPS here
if (strcmp(n,p[0])==0 && strcmp(n,p[1])==0) // found it, so we don't put it in the result.
goto DoNotIncludeAttribute;
p += 2; // skip over value
}
}
// we didn't find it in the given array, add it to the new set.
if (!papNew->setAttribute(n,v))
goto Failed;
DoNotIncludeAttribute:
;
}
k = 0;
while (getNthProperty(k++,n,v))
{
// for each property in the old set, add it to the
// new set only if it is not present in the given array.
if (properties && *properties)
{
const gchar ** p = properties;
while (*p)
{
if (strcmp(n,p[0])==0 && strcmp(n,p[1])==0) // found it, so we don't put it in the result.
goto DoNotIncludeProperty;
p += 2;
}
}
// we didn't find it in the given array, add it to the new set.
if (!papNew->setProperty(n,v))
goto Failed;
DoNotIncludeProperty:
;
}
return papNew;
Failed:
DELETEP(papNew);
return NULL;
}