[Java-gnome-developer] GtkContainer::children()

[Julian F. <jfi...@ho...>]

I needed to use the children() method of GtkContainer but the code being
generated returned a GStringList and it was set to null.

Because we needed it, we wrote the method but I don't even know where to
being trying to fix the generator so it generates appropriate code and I
don't think I have the spare time to figure it out.  I thought I'd include
our code in case it helps you to have something to model off of or
something.

I'm not 100% sure of the Signature in the comment block... my understanding
is a GtkWidget[] has the same type as a GtkWidget but...

Julian

------------snip------------------

    /*
     * Class:     gnu.gtk.GtkContainer
     * Method:    children
     * Signature: ()Lgnu/gtk/GtkWidget;
     */
    JNIEXPORT jobjectArray JNICALL Java_gnu_gtk_GtkContainer_children
(JNIEnv 
        *env, jobject obj) 
    {
        GtkContainer *cptr = peerOfBaseObject (env, obj);
        GList* children = gtk_container_children (cptr);
        int childrenLength = g_list_length(children);
        jclass widget_cls = (*env)->FindClass(env, "gnu/gtk/GtkWidget");

        jobjectArray array;
        jclass result_jc;
        jobject widget;
        GtkWidget *native_widget;
        char classname[100];

        if (childrenLength > 0)
          { 
            int i;
            
            native_widget = (GtkWidget*)g_list_nth_data(children, 0);
            sprintf(classname, "gnu/gtk/%s",
gtk_type_name(GTK_OBJECT_TYPE(native_widget)));
            result_jc = (*env)->FindClass (env, classname);
            widget = makeBaseObjectSubclass (env, result_jc,
native_widget);

            array = (*env)->NewObjectArray(env, childrenLength, widget_cls,
widget);

            for (i = 1;i < childrenLength;i++)
            {
              native_widget = (GtkWidget*)g_list_nth_data(children, i);
              sprintf(classname, "gnu/gtk/%s",
gtk_type_name(GTK_OBJECT_TYPE(native_widget)));
              result_jc = (*env)->FindClass (env, classname);
              widget = makeBaseObjectSubclass (env, result_jc,
native_widget);

              (*env)->SetObjectArrayElement(env, array, i, widget);
            }
          }
          return array;
    }