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path: root/examples/elementary/test_genlist_reusable.py
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#!/usr/bin/env python
# encoding: utf-8


from efl import elementary as elm
from efl.evas import EXPAND_BOTH, EXPAND_HORIZ, FILL_BOTH


class MyItemClass(elm.GenlistItemClass):
    def __init__(self):
        elm.GenlistItemClass.__init__(self, item_style='default')

    def text_get(self, obj, part, item_data):
        return 'Item # %i' % item_data

    def content_get(self, obj, part, item_data):
        if part == 'elm.swallow.icon':
            print('Creating NEW content (icon) for item #%d' % item_data)
            txt = 'Content for item %i' % item_data
            return elm.Label(obj, text=txt, color=(255, 0, 0, 255))

        if part == 'elm.swallow.end':
            print('Creating NEW content (end) for item #%d' % item_data)
            txt = 'Content for item %i' % item_data
            return elm.Label(obj, text=txt, color=(0, 255, 0, 255))

        return None

    def reusable_content_get(self, obj, part, item_data, old):
        if obj.data['reusable_enabled'] == False:
            return None

        if old and part == 'elm.swallow.icon':
            print('REUSING content (icon) for item # %i' % item_data)
            old.text = 'Content for item %i' % item_data
            return old

        if old and part == 'elm.swallow.end':
            print('REUSING content (end) for item # %i' % item_data)
            old.text = 'Content for item %i' % item_data
            return old

        return None

itc = MyItemClass()


def check_changed_cb(ck, gl):
    gl.data['reusable_enabled'] = ck.state
    gl.realized_items_update()

def test_genlist_reusable(parent):
    win = elm.StandardWindow('GenlistReusable', 'Genlist Reusable Contents',
                             size=(400, 400), autodel=True)

    # main vertical box
    box = elm.Box(win, size_hint_weight=EXPAND_BOTH)
    win.resize_object_add(box)
    box.show()

    # info frame
    txt = 'Labels in left content (icon) must be red.<br>' \
          'Labels in right content (end) must be green.<br>' \
          'The 3 numbers in one row should always match.'
    fr = elm.Frame(win, text='Information',  size_hint_expand=EXPAND_HORIZ,
                   size_hint_fill=FILL_BOTH)
    fr.content = elm.Label(fr, text=txt)
    box.pack_end(fr)
    fr.show()

    # genlist
    gl = elm.Genlist(win, homogeneous=True,
                     size_hint_expand=EXPAND_BOTH, size_hint_fill=FILL_BOTH)
    gl.data['reusable_enabled'] = True
    box.pack_end(gl)
    for i in range(0, 2000):
        gl.item_append(itc, i)
    gl.show()

    # buttons
    ck = elm.Check(win, text='Enable reusable contents', state=True)
    ck.callback_changed_add(check_changed_cb, gl)
    box.pack_end(ck)
    ck.show()

    win.show()


if __name__ == '__main__':
    elm.policy_set(elm.ELM_POLICY_QUIT, elm.ELM_POLICY_QUIT_LAST_WINDOW_CLOSED)
    test_genlist_reusable(None)
    elm.run()