bool IAttributes::isLockedAttributeColumn(const char *attribute)
{
AttributeTable *table = (AttributeTable *)m_data;
int n = table->getColumnIndex(pstring(attribute));
if (n != -1 && !table->isColumnLocked(n)) {
return table->isColumnLocked(n);
}
// n.b., this should really throw an exception:
return false;
}
bool IAttributes::renameAttributeColumn(const char *oldname, const char *newname)
{
AttributeTable *table = (AttributeTable *)m_data;
int n = table->getColumnIndex(pstring(oldname));
if (n != -1 && !table->isColumnLocked(n)) {
table->renameColumn(n,newname);
return true;
}
return false;
}
bool IAttributes::insertAttributeColumn(const char *attribute)
{
if (strcmp(attribute,"Ref Number") != 0) {
AttributeTable *table = (AttributeTable *)m_data;
int n = table->getColumnIndex(pstring(attribute));
if (n == -1 || !table->isColumnLocked(n)) {
table->insertColumn(pstring(attribute));
return true;
}
}
return false;
}
bool IAttributes::deleteAttributeColumn(const char *attribute)
{
AttributeTable *table = (AttributeTable *)m_data;
int n = table->getColumnIndex(pstring(attribute));
if (n != -1 && !table->isColumnLocked(n)) {
table->removeColumn(n);
if (n >= table->getDisplayColumn()) {
// there is a problem here: the associated geometry layer will be out of step when it comes to display
// this is corrected in "getDisplayedAttribute" (untidy, but works)
table->setDisplayColumn(n-1,true);
}
return true;
}
return false;
}