Early prototype for _LV2UI_Request_Parameter extension

[ardour.git] / gtk2_ardour / gui_object.cc

diff --git a/gtk2_ardour/gui_object.cc b/gtk2_ardour/gui_object.cc
index b00cd5ae5484c445f4ce19780d3ea4efff0eba02..e9f93e0ebccaf21099f000990e15ee5770f89e44 100644 (file)
--- a/gtk2_ardour/gui_object.cc
+++ b/gtk2_ardour/gui_object.cc
@@ -21,86 +21,81 @@
 #include <sstream>
 
 #include "gui_object.h"
-#include "i18n.h"
+#include "pbd/i18n.h"
 
 using std::string;
 
-const string GUIObjectState::xml_node_name (X_("GUIObjectState"));
-
-GUIObjectState::GUIObjectState ()
-       : _state (X_("GUIObjectState"))
-{
-
-}
-
-XMLNode *
+/*static*/ XMLNode *
 GUIObjectState::get_node (const XMLNode* parent, const string& id)
 {
        XMLNodeList const & children = parent->children ();
        for (XMLNodeList::const_iterator i = children.begin(); i != children.end(); ++i) {
-
                if ((*i)->name() != X_("Object")) {
                        continue;
                }
-
-               XMLProperty* p = (*i)->property (X_("id"));
-               if (p && p->value() == id) {
+               if ((*i)->has_property_with_value(X_("id"), id)) {
                        return *i;
                }
        }
-
        return 0;
 }
 
-XMLNode *
+/*static*/ XMLNode *
 GUIObjectState::get_or_add_node (XMLNode* parent, const string& id)
 {
        XMLNode* child = get_node (parent, id);
        if (!child) {
                child = new XMLNode (X_("Object"));
-               child->add_property (X_("id"), id);
+               child->set_property (X_("id"), id);
                parent->add_child_nocopy (*child);
        }
-
        return child;
 }
 
+
+const string GUIObjectState::xml_node_name (X_("GUIObjectState"));
+
+GUIObjectState::GUIObjectState ()
+       : _state (X_("GUIObjectState"))
+{
+}
+
 XMLNode *
 GUIObjectState::get_or_add_node (const string& id)
 {
-       return get_or_add_node (&_state, id);
+       std::map <std::string, XMLNode*>::iterator i = object_map.find (id);
+       if (i != object_map.end()) {
+               return i->second;
+       }
+       //assert (get_node (&_state, id) == 0); // XXX performance penalty due to get_node()
+       XMLNode* child = new XMLNode (X_("Object"));
+       child->set_property (X_("id"), id);
+       _state.add_child_nocopy (*child);
+       object_map[id] = child;
+       return child;
 }
 
-/** Remove node with provided id.
- *  @param id property of Object node to look for.
- */
-
 void
 GUIObjectState::remove_node (const std::string& id)
 {
+       object_map.erase (id);
        _state.remove_nodes_and_delete(X_("id"), id );
 }
 
-/** Get a string from our state.
- *  @param id property of Object node to look for.
- *  @param prop_name name of the Object property to return.
- *  @param empty if non-0, filled in with true if the property is currently non-existant, otherwise false.
- *  @return value of property `prop_name', or empty.
- */
-
-string 
+string
 GUIObjectState::get_string (const string& id, const string& prop_name, bool* empty)
 {
-       XMLNode* child = get_node (&_state, id);
-
-       if (!child) {
+       std::map <std::string, XMLNode*>::const_iterator i = object_map.find (id);
+       if (i == object_map.end()) {
+               //assert (get_node (&_state, id) == 0); // XXX performance penalty due to get_node()
                if (empty) {
                        *empty = true;
                }
                return string ();
        }
+       //assert (get_node (&_state, id) == i->second); // XXX performance penalty due to get_node()
 
-       XMLProperty* p = child->property (prop_name);
+       XMLProperty const * p (i->second->property (prop_name));
        if (!p) {
                if (empty) {
                        *empty = true;
@@ -128,7 +123,20 @@ GUIObjectState::set_state (const XMLNode& node)
                return -1;
        }
 
+       object_map.clear ();
        _state = node;
+
+       XMLNodeList const & children (_state.children ());
+       for (XMLNodeList::const_iterator i = children.begin(); i != children.end(); ++i) {
+               if ((*i)->name() != X_("Object")) {
+                       continue;
+               }
+               XMLProperty const * prop = (*i)->property (X_("id"));
+               if (!prop) {
+                       continue;
+               }
+               object_map[prop->value ()] = *i;
+       }
        return 0;
 }
 
@@ -142,19 +150,9 @@ std::list<string>
 GUIObjectState::all_ids () const
 {
        std::list<string> ids;
-       XMLNodeList const & children = _state.children ();
-       for (XMLNodeList::const_iterator i = children.begin(); i != children.end(); ++i) {
-               if ((*i)->name() != X_("Object")) {
-                       continue;
-               }
-
-               XMLProperty* p = (*i)->property (X_("id"));
-               if (p) {
-                       ids.push_back (p->value ());
-               }
+       for (std::map <std::string, XMLNode*>::const_iterator i = object_map.begin ();
+                       i != object_map.end (); ++i) {
+               ids.push_back (i->first);
        }
-
        return ids;
 }
-
-