+ //print(JSON.stringify(methods,null,4)); Seed.exit();
+ // dump out a usage file..
+
+ function verifyUsageMethod(parent,child,method)
+ {
+ // currently only verifies add on container.
+ if (method !='Gtk.Container:add') {
+ return true;
+ }
+ var ar = parent.split('.')
+ var cls =ar[1];
+ var ns =ar[0];
+
+ /*
+ if (parent == 'Gtk.Bin' || methods['Gtk.Bin'].extendsClasses.indexOf(parent) > -1) {
+ return false;
+ }
+ if (['GtkSource.CompletionInfo',
+ 'Gtk.MenuShell',
+ 'GtkSource.View', // ??? nothing can be added to it?
+ 'WebKit.WebView', // ??? nothing can be added to it?
+ 'GtkClutter.Embed'
+ ].indexOf(parent) > -1) {
+ return false;
+ }
+ */
+
+
+ try {
+ var x = new imports.gi[ns][cls]();
+ } catch(e) {
+ print("TRY ctor: " + parent );
+ print(e.toString());
+ return false;
+ }
+
+ //print("TRY child type: " + parent);
+
+ print(parent + " : says children are of type : " + x.child_type());
+ // get the Gtype for the child?
+
+ print ("matching?" + GObject.type_From_name(ar.join('')));
+
+
+ return true;
+
+ }
+
+ function is_a(cls, instance_of) {
+ return methods[cls].extendsClasses.indexOf(instance_of) > -1;
+ }
+
+ function verifyUsage(parent,child)
+ {
+ // find all the methods that child can be added to parent.
+ var mts = methods[parent].can_contain_using;
+ for(var i =0;i<mts.length;i++) {
+ var m = mts[i].split(':');
+ if (!is_a(child,m[0])) {
+ continue;
+
+ }
+ if (verifyUsageMethod(parent,child,mts[i])) {
+ return true;
+ }
+ }
+ return false;
+
+
+ }
+
+
+
+
+
+
+ // basically anything that is a Gtk.Container, should be available at the top.
+ /*
+left:
+ *top
+right:
+ Gtk.Window
+ Gtk.Dialog
+ Gtk.MessageDialog
+ Gtk.AboutDialog
+ Gtk.Dialog
+ Gtk.FontSelectionDialog
+ Gtk.InputDialog
+ Gtk.ColorSelectionDialog
+ Gtk.FileChooserDialog
+ Gtk.Menu
+ GtkClutter.Window
+ Gtk.OffScreenWindow
+ */
+// these should really be based on heirachy..
+ usage = {};
+ tops = {}
+ usage['*top'] = implementations['Gtk.Container'];
+ usage['*top'].forEach(function(ch) {
+ tops[ch] = [ '*top' ];
+ });
+ for(var cls in methods) {
+ if (cls =='Gtk.Builder') {
+ continue;
+ }
+ for (var par in methods[cls].can_be_added_to_as) {
+
+ if (!verifyUsage(par,cls)) {
+ continue;
+ }
+
+ if (typeof(usage[par]) == 'undefined') {
+ usage[par] = [];
+ }
+
+
+
+ usage[par].pushUnique(cls);
+ if (typeof(tops[cls]) == 'undefined') {
+ tops[cls] = [];
+ }
+ tops[cls].pushUnique(par);
+ }
+ }
+ function canTop(cls, rec) {
+
+ rec = rec || 0;
+ //print('CANTOP: ' + cls + ' =' + rec);
+ if (rec > 5) {
+ // print('SKIP : ' + cls);
+ }
+ if (typeof(tops[cls]) == 'undefined') {
+ return false;
+ }
+ for (var i =0; i < tops[cls].length; i++) {
+ if (tops[cls][i] == '*top') {
+ return true;
+ }
+ if (cls == tops[cls][i]) {
+ continue;
+ }
+ if (canTop(tops[cls][i], rec+1)) {
+ return true;
+ }
+ }
+ return false;
+
+ }
+