# vim:fileencoding=utf-8
# License: GPL v3 Copyright: 2015, Kovid Goyal <kovid at kovidgoyal.net>

from dom import build_rule
from elementmaker import E

from book_list.theme import get_color

def create_button(text, icon=None, action=None, tooltip=None):
    cls = ''
    if icon:
        cls = str.format('fa fa-{} fa-lg', icon)
        text = '\xa0' + text
    ans = E.button(E.i(class_=cls), text, class_='calibre-push-button', type='button', title=tooltip or '')
    if action is not None:
        ans.addEventListener('click', def(event): event.preventDefault(), action(event);)
    return ans

create_button.style = build_rule('button.calibre-push-button',
    border_radius='1em', background_clip='padding-box', background_color=get_color('button-start'),
    background_image=str.format('linear-gradient(to bottom, {}, {})', get_color('button-start'), get_color('button-end')),
    padding='1ex 1em', color=get_color('button-text'), cursor='pointer', font_size='inherit'
)
create_button.style += build_rule('button.calibre-push-button:hover', transform='scale(1.2)')
create_button.style += build_rule('button.calibre-push-button:active', transform='scale(2)')
create_button.style += build_rule('button.calibre-push-button:focus', outline='none')
create_button.style += build_rule('button.calibre-push-button::-moz-focus-inner', border='0')

def create_spinner():
    return E.i(class_='fa fa-spin fa-spinner')

def get_widget_css():
    ans = create_button.style
    return ans