read form and save config when Panel is hidden

Author: newville

larch/wxxas/taskpanel.py

@@ -306,15 +306,29 @@ def show_subframe(self, name, frameclass, **opts):
             self.subframes[name] = frameclass(self, **opts)
 
     def onPanelExposed(self, **kws):
-        # called when notebook is selected
+        # called when notebook is selected: process group
         fname = self.controller.filelist.GetStringSelection()
         if fname in self.controller.file_groups:
             gname = self.controller.file_groups[fname]
             dgroup = self.controller.get_group(gname)
-            self.ensure_xas_processed(dgroup)
+            if dgroup.datatype == 'xas':
+                self.ensure_xas_processed(dgroup)
             self.fill_form(dgroup)
             self.process(dgroup=dgroup)
 
+    def onPanelHidden(self, **kws):
+        # called when notebook is de-selected: save config
+        fname = self.controller.filelist.GetStringSelection()
+        if fname in self.controller.file_groups:
+            gname = self.controller.file_groups[fname]
+            dgroup = self.controller.get_group(gname)
+            if dgroup is None:
+                return
+            conf = self.get_config()
+            conf.update(self.read_form())
+            setattr(dgroup.config, self.configname, conf)
+
+
     def write_message(self, msg, panel=0):
         self.controller.write_message(msg, panel=panel)
 

larch/wxxas/xasgui.py

@@ -579,9 +579,15 @@ def get_nbpage(self, name):
         return ipage, self.nb.GetPage(ipage)
 
     def onNBChanged(self, event=None):
-        callback = getattr(self.nb.GetCurrentPage(), 'onPanelExposed', None)
-        if callable(callback):
-            callback()
+        oldpage = self.nb.GetPage(event.GetOldSelection())
+        newpage = self.nb.GetPage(event.GetSelection())
+        on_hide = getattr(oldpage, 'onPanelHidden', None)
+        if callable(on_hide):
+            on_hide()
+
+        on_expose = getattr(newpage, 'onPanelExposed', None)
+        if callable(on_expose):
+            on_expose()
 
     def onSelAll(self, event=None):
         self.controller.filelist.select_all()