diff options
Diffstat (limited to 'libs/pbd/stateful.cc')
| -rw-r--r-- | libs/pbd/stateful.cc | 37 |
1 files changed, 26 insertions, 11 deletions
diff --git a/libs/pbd/stateful.cc b/libs/pbd/stateful.cc index 4eb8434af2..47d1e66ef4 100644 --- a/libs/pbd/stateful.cc +++ b/libs/pbd/stateful.cc @@ -68,22 +68,37 @@ Stateful::add_extra_xml (XMLNode& node) } XMLNode * -Stateful::extra_xml (const string& str) +Stateful::extra_xml (const string& str, bool add_if_missing) { - if (_extra_xml == 0) { - return 0; + XMLNode* node = 0; + + if (_extra_xml) { + node = _extra_xml->child (str.c_str()); } - const XMLNodeList& nlist = _extra_xml->children(); - XMLNodeConstIterator i; + if (!node && add_if_missing) { + node = new XMLNode (str); + add_extra_xml (*node); + } - for (i = nlist.begin(); i != nlist.end(); ++i) { - if ((*i)->name() == str) { - return (*i); - } - } + return node; +} - return 0; +void +Stateful::save_extra_xml (const XMLNode& node) +{ + /* Looks for the child node called "Extra" and makes _extra_xml + point to a copy of it. Will delete any existing node pointed + to by _extra_xml if a new Extra node is found, but not + otherwise. + */ + + const XMLNode* xtra = node.child ("Extra"); + + if (xtra) { + delete _extra_xml; + _extra_xml = new XMLNode (*xtra); + } } void |