On Thursday, November 8, 2018 at 7:04:05 AM UTC-6, Edward K. Ream wrote: *How to communicate between components?* >
[big snip] Happily, flexx properties provide everything needed. Apparently, > properties must be used to communicate even between different flx.Widgets. > That is, the ivars of one widget are not accessible to other flx.Widgets. > So the example code above might better be rewritten this way: > > class LeoMainWindow(flx.Widget): > > """ > Leo's main window, that is, root.main_window. > > Each property x below is accessible as root.main_window.x. > """ > > body = flx.AnyProp(settable=True) > log = flx.AnyProp(settable=True) > minibuffer = flx.AnyProp(settable=True) > status_line = flx.AnyProp(settable=True) > tree = flx.AnyProp(settable=True) > > def init(self, body, outline): > with flx.VBox(): > with flx.HBox(flex=1): > tree = LeoTree(outline, flex=1) > log = LeoLog(flex=1) > body = LeoBody(body, flex=1) > minibuffer = LeoMiniBuffer() > status_line = LeoStatusLine() > self._mutate_body(body) > self._mutate_log(log) > self._mutate_minibuffer(minibuffer) > self._mutate_status_line(status_line) > self._mutate_tree(tree) > I buried the lede big time here. I wanted to emphasize that *all* flx.Widgets have a root ivar <https://flexx.readthedocs.io/en/stable/guide/widgets_components.html#the-root-component>, which is the LeoApp instance. So it's easy to add to the log widget! For example, here is the event handler in the LeoTree class: @flx.reaction( 'tree.children**.checked', 'tree.children**.selected', 'tree.children**.collapsed', ) def on_event(self, *events): log = self.root.main_window.log for ev in events: id_ = ev.source.title or ev.source.text kind = '' if ev.new_value else 'un-' s = kind + ev.type log.put('%s: %s' % (lpad(s, 15), id_)) Recall that pscript does not support features such as "10%s" which is why the code above does padding by hand using the global lpad function. Finally, here is log.put: def put(self, s): self.ace.setValue(self.ace.getValue() + '\n' + s) Edward -- You received this message because you are subscribed to the Google Groups "leo-editor" group. To unsubscribe from this group and stop receiving emails from it, send an email to leo-editor+unsubscr...@googlegroups.com. To post to this group, send email to leo-editor@googlegroups.com. Visit this group at https://groups.google.com/group/leo-editor. For more options, visit https://groups.google.com/d/optout.
