kivy/examples/widgets/tabbed_panel_test.py

'''
TabbedPannel
======

Test of the widget TabbedPannel.
'''

from kivy.app import App
from kivy.uix.floatlayout import FloatLayout
from kivy.uix.button import Button
from kivy.lang import Builder
from kivy.uix.tabbedpannel import TabbedPannel
from kivy.properties import ObjectProperty

Builder.load_string('''
<cut_copy_paste>
    size_hint: (None, None)
    size: (350, 250)
    pos_hint: {'center_x': .25, 'y': .55}
    tab_pos: 'top_left'
    tab_height: 20
    tab_width: 70
    default_tab_text: 'tab1'
    default_content: cut
    BubbleButton:
        id: cut
        text: 'Cut'
    BubbleButton:
        id: copy
        text: 'Copy'
    BubbleButton:
        id: paste
        text: 'Paste'
    Tab_Heading:
        text: 'tab2'
        on_release: root.change_tab_contents(copy)
    Tab_Heading:
        text: 'tab3'
        on_release: root.change_tab_contents(paste)
    #Tab_Heading:
    #    text: 'tab4'
    #    on_release: root.clear_widgets()
    #Tab_Heading:
    #    text: 'tab5'
    #    on_release: root.clear_widgets()
''')


class cut_copy_paste(TabbedPannel):

    default_content = ObjectProperty(None)

    def on_default_tab(self, *l):
        self.change_tab_contents(self.default_content)

    def change_tab_contents(self, *l):
        self.clear_widgets()
        self.add_widget(l[0])


class TabShowcase(FloatLayout):

    def __init__(self, **kwargs):
        super(TabShowcase, self).__init__(**kwargs)
        self.but = Button(text='Press to show Tabbed Pannel')
        self.but.bind(on_release=self.show_tab)
        self.add_widget(self.but)

    def show_tab(self, *l):
        if not hasattr(self, 'tab'):
            self.tab = tab = cut_copy_paste()
            self.add_widget(tab)
        else:
            values = ('left_top', 'left_mid', 'left_bottom', 'top_left',
                'top_mid', 'top_right', 'right_top', 'right_mid',
                'right_bottom', 'bottom_left', 'bottom_mid', 'bottom_right')
            index = values.index(self.tab.tab_pos)
            self.tab.tab_pos = values[(index + 1) % len(values)]
        self.but.text='Tabs in \'%s\' position,\n press to change to next pos'\
                %self.tab.tab_pos


class TestTabApp(App):

    def build(self):
        return TabShowcase()

if __name__ in ('__main__', '__android__'):
    TestTabApp().run()