Add new object types "slider" and "dial".

Fix memory leaks (PUI doesn't make copies of lists, so we have to make
our own copies and keep pointers to them).

Adjust for new method names in NewGUI.

Move the GUIInfo struct into the cxx file so that it's not part of the
public interface.

src/GUI/dialog.cxx

@@ -11,6 +11,19 @@
 // Callbacks.
 ////////////////////////////////////////////////////////////////////////
 
+/**
+ * User data for a GUI object.
+ */
+struct GUIInfo
+{
+    GUIInfo (FGDialog * d);
+    virtual ~GUIInfo ();
+
+    FGDialog * dialog;
+    vector <FGBinding *> bindings;
+};
+
+
 /**
  * Action callback.
  */
@@ -19,14 +32,14 @@ action_callback (puObject * object)
 {
     GUIInfo * info = (GUIInfo *)object->getUserData();
     NewGUI * gui = (NewGUI *)globals->get_subsystem("gui");
-    gui->setCurrentWidget(info->widget);
+    gui->setActiveDialog(info->dialog);
     int nBindings = info->bindings.size();
     for (int i = 0; i < nBindings; i++) {
         info->bindings[i]->fire();
-        if (gui->getCurrentWidget() == 0)
+        if (gui->getActiveDialog() == 0)
             break;
     }
-    gui->setCurrentWidget(0);
+    gui->setActiveDialog(0);
 }
 
 
@@ -83,8 +96,8 @@ copy_from_pui (puObject * object, SGPropertyNode * node)
 // Implementation of GUIInfo.
 ////////////////////////////////////////////////////////////////////////
 
-GUIInfo::GUIInfo (FGDialog * w)
-    : widget(w)
+GUIInfo::GUIInfo (FGDialog * d)
+    : dialog(d)
 {
 }
 
@@ -110,14 +123,29 @@ FGDialog::FGDialog (SGPropertyNode_ptr props)
 
 FGDialog::~FGDialog ()
 {
-    delete _object;
+    puDeleteObject(_object);
 
     int i;
+
+                                // Delete all the arrays we made
+                                // and were forced to keep around
+                                // because PUI won't do its own
+                                // memory management.
+    for (i = 0; i < _char_arrays.size(); i++) {
+        for (int j = 0; _char_arrays[i][j] != 0; j++)
+            free(_char_arrays[i][j]); // added with strdup
+        delete _char_arrays[i];
+    }
+
+                                // Delete all the info objects we
+                                // were forced to keep around because
+                                // PUI cannot delete its own user data.
     for (i = 0; i < _info.size(); i++) {
-        delete _info[i];
+        delete (GUIInfo *)_info[i];
         _info[i] = 0;
     }
 
+                                // Finally, delete the property links.
     for (i = 0; i < _propertyObjects.size(); i++) {
         delete _propertyObjects[i];
         _propertyObjects[i] = 0;
@@ -232,18 +260,30 @@ FGDialog::makeObject (SGPropertyNode * props, int parentWidth, int parentHeight)
         return b;
     } else if (type == "combo") {
         vector<SGPropertyNode_ptr> value_nodes = props->getChildren("value");
-        char ** entries = new char*[value_nodes.size()+1];
+        char ** entries = make_char_array(value_nodes.size());
         for (int i = 0, j = value_nodes.size() - 1;
              i < value_nodes.size();
              i++, j--)
-            entries[i] = (char *)value_nodes[i]->getStringValue();
-        entries[value_nodes.size()] = 0;
+            entries[i] = strdup((char *)value_nodes[i]->getStringValue());
         puComboBox * combo =
             new puComboBox(x, y, x + width, y + height, entries,
                            props->getBoolValue("editable", false));
-//         delete entries;
         setupObject(combo, props);
         return combo;
+    } else if (type == "slider") {
+        bool vertical = props->getBoolValue("vertical", false);
+        puSlider * slider = new puSlider(x, y, (vertical ? height : width));
+        slider->setMinValue(props->getFloatValue("min", 0.0));
+        slider->setMaxValue(props->getFloatValue("max", 1.0));
+        setupObject(slider, props);
+        return slider;
+    } else if (type == "dial") {
+        puDial * dial = new puDial(x, y, width);
+        dial->setMinValue(props->getFloatValue("min", 0.0));
+        dial->setMaxValue(props->getFloatValue("max", 1.0));
+        dial->setWrap(props->getBoolValue("wrap", true));
+        setupObject(dial, props);
+        return dial;
     } else {
         return 0;
     }
@@ -298,6 +338,16 @@ FGDialog::setupGroup (puGroup * group, SGPropertyNode * props,
     group->close();
 }
 
+char **
+FGDialog::make_char_array (int size)
+{
+    char ** list = new char*[size+1];
+    for (int i = 0; i <= size; i++)
+        list[i] = 0;
+    _char_arrays.push_back(list);
+    return list;
+}
+
 
 
 ////////////////////////////////////////////////////////////////////////