class ShowingDetailScreen(State):
def enter_state(self, context=None):
print 'ShowingDetailScreen/enter_state'
if not 'Detail' in self.statechart.app.sm.screen_names:
self.app = self.statechart.app
view = BoxLayout(orientation='vertical', spacing=10)
toolbar = BoxLayout(size_hint=(1.0, None), height=50)
button = Button(text='Lists')
button.bind(on_press=self.go_to_lists)
toolbar.add_widget(button)
button = Button(text='Search')
button.bind(on_press=self.go_to_search)
toolbar.add_widget(button)
button = Button(text='Data')
button.bind(on_press=self.go_to_data)
toolbar.add_widget(button)
label = Label(text='Detail', color=[.8, .8, .8, .8], bold=True)
toolbar.add_widget(label)
view.add_widget(toolbar)
selected_fruit = \
self.statechart.fruits_dict_adapter.selection[0].text
self.detail_view = FruitDetailView(
fruit_name=selected_fruit,
size_hint=(.6, 1.0))
view.add_widget(self.detail_view)
screen = Screen(name='Detail')
screen.add_widget(view)
self.app.sm.add_widget(screen)
if self.app.sm.current != 'Detail':
self.detail_view.fruit_name = \
self.statechart.fruits_dict_adapter.selection[0].text
self.detail_view.redraw()
self.app.sm.current = 'Detail'
def exit_state(self, context=None):
print 'ShowingDetailScreen/exit_state'
def go_to_lists(self, *args):
self.go_to_state('ShowingListsScreen')
def go_to_search(self, *args):
self.go_to_state('ShowingSearchScreen')
def go_to_data(self, *args):
self.go_to_state('ShowingDataScreen')
class ShowingDetailScreen(State):
def enter_state(self, context=None):
print 'ShowingDetailScreen/enter_state'
if not 'Detail' in self.statechart.app.sm.screen_names:
self.app = self.statechart.app
view = BoxLayout(orientation='vertical', spacing=10)
toolbar = BoxLayout(size_hint=(1.0, None), height=50)
button = Button(text='Lists')
button.bind(on_press=self.go_to_lists)
toolbar.add_widget(button)
button = Button(text='Search')
button.bind(on_press=self.go_to_search)
toolbar.add_widget(button)
button = Button(text='Data')
button.bind(on_press=self.go_to_data)
toolbar.add_widget(button)
label = Label(text='Detail', color=[.8, .8, .8, .8], bold=True)
toolbar.add_widget(label)
view.add_widget(toolbar)
selected_fruit = \
self.statechart.fruits_dict_adapter.selection[0].text
self.detail_view = FruitDetailView(fruit_name=selected_fruit,
size_hint=(.6, 1.0))
view.add_widget(self.detail_view)
screen = Screen(name='Detail')
screen.add_widget(view)
self.app.sm.add_widget(screen)
if self.app.sm.current != 'Detail':
self.detail_view.fruit_name = \
self.statechart.fruits_dict_adapter.selection[0].text
self.detail_view.redraw()
self.app.sm.current = 'Detail'
def exit_state(self, context=None):
print 'ShowingDetailScreen/exit_state'
def go_to_lists(self, *args):
self.go_to_state('ShowingListsScreen')
def go_to_search(self, *args):
self.go_to_state('ShowingSearchScreen')
def go_to_data(self, *args):
self.go_to_state('ShowingDataScreen')
def enter_state(self, context=None):
print 'ShowingListsScreen/enter_state'
if not 'Lists' in self.statechart.app.sm.screen_names:
# Convenience references:
self.app = self.statechart.app
view = BoxLayout(orientation='vertical', spacing=10)
toolbar = BoxLayout(size_hint=(1.0, None), height=50)
label = Label(text='Lists', color=[.8, .8, .8, .8], bold=True)
toolbar.add_widget(label)
button = Button(text='Search')
button.bind(on_press=self.go_to_search)
toolbar.add_widget(button)
button = Button(text='Data')
button.bind(on_press=self.go_to_data)
toolbar.add_widget(button)
button = Button(text='Detail')
button.bind(on_press=self.go_to_detail)
toolbar.add_widget(button)
view.add_widget(toolbar)
lists_view = GridLayout(cols=3, size_hint=(1.0, 1.0))
lists_view.add_widget(
ListView(adapter=self.statechart.fruit_categories_dict_adapter,
size_hint=(.2, 1.0)))
lists_view.add_widget(
ListView(adapter=self.statechart.fruits_dict_adapter,
size_hint=(.2, 1.0)))
selected_fruit = \
self.statechart.fruits_dict_adapter.selection[0].text
self.detail_view = FruitDetailView(fruit_name=selected_fruit,
size_hint=(.6, 1.0))
lists_view.add_widget(self.detail_view)
view.add_widget(lists_view)
self.create_adapter_bindings()
screen = Screen(name='Lists')
screen.add_widget(view)
self.app.sm.add_widget(screen)
if self.app.sm.current != 'Lists':
self.app.sm.current = 'Lists'
def __init__(self, items, **kwargs):
kwargs['cols'] = 2
kwargs['size_hint'] = (1.0, 1.0)
super(MasterDetailView, self).__init__(**kwargs)
list_item_args_converter = \
lambda row_index, rec: {'text': rec['name'],
'size_hint_y': None,
'height': 25}
dict_adapter = DictAdapter(sorted_keys=sorted(fruit_data.keys()),
data=fruit_data,
args_converter=list_item_args_converter,
selection_mode='single',
allow_empty_selection=False,
cls=ListItemButton)
master_list_view = ListView(adapter=dict_adapter, size_hint=(.3, 1.0))
self.add_widget(master_list_view)
detail_view = FruitDetailView(
fruit_name=dict_adapter.selection[0].text, size_hint=(.7, 1.0))
dict_adapter.bind(on_selection_change=detail_view.fruit_changed)
self.add_widget(detail_view)
def enter_state(self, context=None):
print 'ShowingListsScreen/enter_state'
if not 'Lists' in self.statechart.app.sm.screen_names:
# Convenience references:
self.app = self.statechart.app
view = BoxLayout(orientation='vertical', spacing=10)
toolbar = BoxLayout(size_hint=(1.0, None), height=50)
label = Label(text='Lists', color=[.8, .8, .8, .8], bold=True)
toolbar.add_widget(label)
button = Button(text='Search')
button.bind(on_press=self.go_to_search)
toolbar.add_widget(button)
button = Button(text='Data')
button.bind(on_press=self.go_to_data)
toolbar.add_widget(button)
button = Button(text='Detail')
button.bind(on_press=self.go_to_detail)
toolbar.add_widget(button)
view.add_widget(toolbar)
lists_view = GridLayout(cols=3, size_hint=(1.0, 1.0))
lists_view.add_widget(ListView(
adapter=self.statechart.fruit_categories_dict_adapter,
size_hint=(.2, 1.0)))
lists_view.add_widget(ListView(
adapter=self.statechart.fruits_dict_adapter,
size_hint=(.2, 1.0)))
selected_fruit = \
self.statechart.fruits_dict_adapter.selection[0].text
self.detail_view = FruitDetailView(fruit_name=selected_fruit,
size_hint=(.6, 1.0))
lists_view.add_widget(self.detail_view)
view.add_widget(lists_view)
self.create_adapter_bindings()
screen = Screen(name='Lists')
screen.add_widget(view)
self.app.sm.add_widget(screen)
if self.app.sm.current != 'Lists':
self.app.sm.current = 'Lists'
def __init__(self, **kwargs):
kwargs['cols'] = 3
super(CascadingView, self).__init__(**kwargs)
list_item_args_converter = \
lambda row_index, rec: {'text': rec['name'],
'size_hint_y': None,
'height': 25}
# Fruit categories list on the left:
#
categories = sorted(fruit_categories.keys())
fruit_categories_dict_adapter = \
DictAdapter(
sorted_keys=categories,
data=fruit_categories,
args_converter=list_item_args_converter,
selection_mode='single',
allow_empty_selection=False,
cls=ListItemButton)
fruit_categories_list_view = \
ListView(adapter=fruit_categories_dict_adapter,
size_hint=(.2, 1.0))
self.add_widget(fruit_categories_list_view)
fruits_dict_adapter = \
FruitsDictAdapter(
sorted_keys=fruit_categories[categories[0]]['fruits'],
data=fruit_data,
args_converter=list_item_args_converter,
selection_mode='single',
allow_empty_selection=False,
cls=ListItemButton)
fruit_categories_dict_adapter.bind(
on_selection_change=fruits_dict_adapter.fruit_category_changed)
fruits_list_view = \
ListView(adapter=fruits_dict_adapter,
size_hint=(.2, 1.0))
self.add_widget(fruits_list_view)
# Detail view, for a given fruit, on the right:
#
detail_view = FruitDetailView(
fruit_name=fruits_dict_adapter.selection[0].text,
size_hint=(.6, 1.0))
fruits_dict_adapter.bind(
on_selection_change=detail_view.fruit_changed)
self.add_widget(detail_view)
class ShowingListsScreen(State):
'''Implementation of a cascading style display, with a scrollable
list of fruit categories on the left, a list of fruits for the
selected category in the middle, and a fruit detail view on the
right.
'''
def enter_state(self, context=None):
print 'ShowingListsScreen/enter_state'
if not 'Lists' in self.statechart.app.sm.screen_names:
# Convenience references:
self.app = self.statechart.app
view = BoxLayout(orientation='vertical', spacing=10)
toolbar = BoxLayout(size_hint=(1.0, None), height=50)
label = Label(text='Lists', color=[.8, .8, .8, .8], bold=True)
toolbar.add_widget(label)
button = Button(text='Search')
button.bind(on_press=self.go_to_search)
toolbar.add_widget(button)
button = Button(text='Data')
button.bind(on_press=self.go_to_data)
toolbar.add_widget(button)
button = Button(text='Detail')
button.bind(on_press=self.go_to_detail)
toolbar.add_widget(button)
view.add_widget(toolbar)
lists_view = GridLayout(cols=3, size_hint=(1.0, 1.0))
lists_view.add_widget(ListView(
adapter=self.statechart.fruit_categories_dict_adapter,
size_hint=(.2, 1.0)))
lists_view.add_widget(ListView(
adapter=self.statechart.fruits_dict_adapter,
size_hint=(.2, 1.0)))
selected_fruit = \
self.statechart.fruits_dict_adapter.selection[0].text
self.detail_view = FruitDetailView(fruit_name=selected_fruit,
size_hint=(.6, 1.0))
lists_view.add_widget(self.detail_view)
view.add_widget(lists_view)
self.create_adapter_bindings()
screen = Screen(name='Lists')
screen.add_widget(view)
self.app.sm.add_widget(screen)
if self.app.sm.current != 'Lists':
self.app.sm.current = 'Lists'
def exit_state(self, context=None):
print 'ShowingListsScreen/exit_state'
def create_adapter_bindings(self):
# Create bindings from selection in adapters to
# action callback functions here:
self.statechart.fruit_categories_dict_adapter.bind(
on_selection_change=self.fruit_category_changed)
self.statechart.fruits_dict_adapter.bind(
on_selection_change=self.fruit_changed)
def fruit_category_changed(self, fruit_categories_adapter, *args):
if len(fruit_categories_adapter.selection) == 0:
self.statechart.fruits_dict_adapter.data = {}
return
key = fruit_categories_adapter.selection[0].text
category = fruit_categories[key]
self.statechart.fruits_dict_adapter.sorted_keys = category['fruits']
def fruit_changed(self, list_adapter, *args):
if len(list_adapter.selection) == 0:
self.detail_view.fruit_name = None
else:
selected_object = list_adapter.selection[0]
if type(selected_object) is str:
self.detail_view.fruit_name = selected_object
else:
self.detail_view.fruit_name = selected_object.text
self.detail_view.redraw()
def go_to_search(self, *args):
self.go_to_state('ShowingSearchScreen')
def go_to_data(self, *args):
self.go_to_state('ShowingDataScreen')
def go_to_detail(self, *args):
self.go_to_state('ShowingDetailScreen')
def __init__(self, **kwargs):
kwargs['cols'] = 3
super(CascadingView, self).__init__(**kwargs)
list_item_args_converter = \
lambda row_index, selectable: {'text': selectable.name,
'size_hint_y': None,
'height': 25}
# Add a fruit categories list on the left. We use ListAdapter, for
# which we set the data argument to the list of CategoryItem
# instances from above. The args_converter only pulls the name
# property from these instances, adding also size_hint_y and height.
# selection_mode is single, because this list will "drive" the second
# list defined below. allow_empty_selection is False, because we
# always want a selected category, so that the second list will be
# populated. Finally, we instruct ListAdapter to build list item views
# using the provided cls, ListItemButton.
#
fruit_categories_list_adapter = \
ListAdapter(data=category_data_items,
args_converter=list_item_args_converter,
selection_mode='single',
allow_empty_selection=False,
cls=ListItemButton)
fruit_categories_list_view = \
ListView(adapter=fruit_categories_list_adapter,
size_hint=(.2, 1.0))
self.add_widget(fruit_categories_list_view)
# Fruits, for a given category, are in a list in the middle, which
# uses FruitsListsAdapter, defined above. FruitsListAdapter has a
# fruit_changed() method that updates the data list. The binding
# to the fruit_categories_list_adapter is set up after
# instantiation of the fruit_list_adapter.
#
first_category_fruits = \
fruit_categories[fruit_categories.keys()[0]]['fruits']
first_category_fruit_data_items = \
[f for f in fruit_data_items if f.name in first_category_fruits]
fruits_list_adapter = \
FruitsListAdapter(data=first_category_fruit_data_items,
args_converter=list_item_args_converter,
selection_mode='single',
allow_empty_selection=False,
cls=ListItemButton)
fruit_categories_list_adapter.bind(
on_selection_change=fruits_list_adapter.fruit_category_changed)
fruits_list_view = \
ListView(adapter=fruits_list_adapter, size_hint=(.2, 1.0))
self.add_widget(fruits_list_view)
# Detail view, for a given fruit, on the right:
#
detail_view = FruitDetailView(
fruit_name=fruits_list_adapter.selection[0].text,
size_hint=(.6, 1.0))
fruits_list_adapter.bind(on_selection_change=detail_view.fruit_changed)
self.add_widget(detail_view)
class ShowingListsScreen(State):
'''Implementation of a cascading style display, with a scrollable
list of fruit categories on the left, a list of fruits for the
selected category in the middle, and a fruit detail view on the
right.
'''
def enter_state(self, context=None):
print 'ShowingListsScreen/enter_state'
if not 'Lists' in self.statechart.app.sm.screen_names:
# Convenience references:
self.app = self.statechart.app
view = BoxLayout(orientation='vertical', spacing=10)
toolbar = BoxLayout(size_hint=(1.0, None), height=50)
label = Label(text='Lists', color=[.8, .8, .8, .8], bold=True)
toolbar.add_widget(label)
button = Button(text='Search')
button.bind(on_press=self.go_to_search)
toolbar.add_widget(button)
button = Button(text='Data')
button.bind(on_press=self.go_to_data)
toolbar.add_widget(button)
button = Button(text='Detail')
button.bind(on_press=self.go_to_detail)
toolbar.add_widget(button)
view.add_widget(toolbar)
lists_view = GridLayout(cols=3, size_hint=(1.0, 1.0))
lists_view.add_widget(
ListView(adapter=self.statechart.fruit_categories_dict_adapter,
size_hint=(.2, 1.0)))
lists_view.add_widget(
ListView(adapter=self.statechart.fruits_dict_adapter,
size_hint=(.2, 1.0)))
selected_fruit = \
self.statechart.fruits_dict_adapter.selection[0].text
self.detail_view = FruitDetailView(fruit_name=selected_fruit,
size_hint=(.6, 1.0))
lists_view.add_widget(self.detail_view)
view.add_widget(lists_view)
self.create_adapter_bindings()
screen = Screen(name='Lists')
screen.add_widget(view)
self.app.sm.add_widget(screen)
if self.app.sm.current != 'Lists':
self.app.sm.current = 'Lists'
def exit_state(self, context=None):
print 'ShowingListsScreen/exit_state'
def create_adapter_bindings(self):
# Create bindings from selection in adapters to
# action callback functions here:
self.statechart.fruit_categories_dict_adapter.bind(
on_selection_change=self.fruit_category_changed)
self.statechart.fruits_dict_adapter.bind(
on_selection_change=self.fruit_changed)
def fruit_category_changed(self, fruit_categories_adapter, *args):
if len(fruit_categories_adapter.selection) == 0:
self.statechart.fruits_dict_adapter.data = {}
return
key = fruit_categories_adapter.selection[0].text
category = fruit_categories[key]
self.statechart.fruits_dict_adapter.sorted_keys = category['fruits']
def fruit_changed(self, list_adapter, *args):
if len(list_adapter.selection) == 0:
self.detail_view.fruit_name = None
else:
selected_object = list_adapter.selection[0]
if type(selected_object) is str:
self.detail_view.fruit_name = selected_object
else:
self.detail_view.fruit_name = selected_object.text
self.detail_view.redraw()
def go_to_search(self, *args):
self.go_to_state('ShowingSearchScreen')
def go_to_data(self, *args):
self.go_to_state('ShowingDataScreen')
def go_to_detail(self, *args):
self.go_to_state('ShowingDetailScreen')
