126 lines
3.3 KiB
Python
126 lines
3.3 KiB
Python
#!/bin/env python3
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import urwid as u
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class ListItem(u.WidgetWrap):
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def __init__ (self, country):
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self.content = country
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name = country["name"]
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t = u.AttrWrap(u.Text(name), "country", "country_selected")
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u.WidgetWrap.__init__(self, t)
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def selectable (self):
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return True
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def keypress(self, size, key):
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return key
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class ListView(u.WidgetWrap):
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def __init__(self):
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u.register_signal(self.__class__, ['show_details'])
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self.walker = u.SimpleFocusListWalker([])
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lb = u.ListBox(self.walker)
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u.WidgetWrap.__init__(self, lb)
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def modified(self):
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focus_w, _ = self.walker.get_focus()
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u.emit_signal(self, 'show_details', focus_w.content)
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def set_data(self, countries):
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countries_widgets = [ListItem(c) for c in countries]
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u.disconnect_signal(self.walker, 'modified', self.modified)
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while len(self.walker) > 0:
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self.walker.pop()
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self.walker.extend(countries_widgets)
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u.connect_signal(self.walker, "modified", self.modified)
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self.walker.set_focus(0)
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class DetailView(u.WidgetWrap):
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def __init__ (self):
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t = u.Text("")
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u.WidgetWrap.__init__(self, t)
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def set_country(self, c):
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s = f'Name: {c["name"]}\nPop: {c["pop"]}\nGDP: {c["gdp"]}'
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self._w.set_text(s)
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class App(object):
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def unhandled_input(self, key):
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if key in ('q',):
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raise u.ExitMainLoop()
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def show_details(self, country):
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self.detail_view.set_country(country)
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def __init__(self):
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self.palette = {
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("bg", "black", "white"),
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("country", "black", "white"),
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("country_selected", "black", "yellow"),
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("footer", "white, bold", "dark red")
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}
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self.list_view = ListView()
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self.detail_view = DetailView()
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u.connect_signal(self.list_view, 'show_details', self.show_details)
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footer = u.AttrWrap(u.Text(" Q to exit"), "footer")
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col_rows = u.raw_display.Screen().get_cols_rows()
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h = col_rows[0] - 2
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f1 = u.Filler(self.list_view, valign='top', height=h)
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f2 = u.Filler(self.detail_view, valign='top')
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c_list = u.LineBox(f1, title="Countries")
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c_details = u.LineBox(f2, title="Country Details")
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columns = u.Columns([('weight', 30, c_list), ('weight', 70, c_details)])
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frame = u.AttrMap(u.Frame(body=columns, footer=footer), 'bg')
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self.loop = u.MainLoop(frame, self.palette, unhandled_input=self.unhandled_input)
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def update_data(self):
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l = [] # https://databank.worldbank.org/embed/Population-and-GDP-by-Country/id/29c4df41
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l.append({"name":"USA", "pop":"325,084,756", "gdp":"$ 19.485 trillion"})
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l.append({"name":"China", "pop":"1,421,021,791", "gdp":"$ 12.238 trillion"})
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l.append({"name":"Japan", "pop":"127,502,725", "gdp":"$ 4.872 trillion"})
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l.append({"name":"Germany", "pop":"82,658,409", "gdp":"$ 3.693 trillion"})
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l.append({"name":"India", "pop":"1,338,676,785", "gdp":"$ 2.651 trillion"})
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self.list_view.set_data(l)
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def start(self):
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self.update_data()
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self.loop.run()
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if __name__ == '__main__':
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app = App()
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app.start()
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