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"""PytSite Select Widgets
"""
__author__ = 'Oleksandr Shepetko'
__email__ = 'a@shepetko.com'
__license__ = 'MIT'
import htmler
from typing import Union, List, Tuple
from collections import OrderedDict
from math import ceil
from datetime import datetime
from json import dumps as json_dumps
from pytsite import lang, validation, util, router
from plugins import hreflang
from ._base import Abstract
from ._input import Text
class Checkbox(Abstract):
"""Single Checkbox Widget
"""
def __init__(self, uid: str, **kwargs):
"""Init
"""
# Widget's label is disabled because it will be created in _get_element()
kwargs.setdefault('label_disabled', True)
super().__init__(uid, **kwargs)
self._bootstrap_version = kwargs.get('bootstrap_version', 3)
if self._bootstrap_version not in (3, 4):
self._bootstrap_version = 3
def set_val(self, value):
# If checkbox is checked on client side, we get list of 2 two items: ['', 'True'],
# or empty string otherwise
if isinstance(value, list):
value = value[-1] if value else False
super().set_val(True if value in (True, 'True', 'true') else False)
@property
def checked(self) -> bool:
return self.get_val()
@checked.setter
def checked(self, value: bool):
self.set_val(value)
def _get_element(self, **kwargs) -> htmler.Element:
div = htmler.Div(css='form-check' if self._bootstrap_version == 4 else 'checkbox')
div.append_child(htmler.Input(type='hidden', name=self._name))
inp = htmler.Input(id=self._uid, name=self._name, type='checkbox', value='True', checked=self.checked,
required=self.required)
label = htmler.Label(label_for=self._uid)
if self._bootstrap_version == 3:
label.append_child(inp)
label.append_text(self._label)
div.append_child(label)
elif self._bootstrap_version == 4:
inp.set_attr('css', 'form-check-input')
label.set_attr('css', 'form-check-label')
label.append_text(self._label)
div.append_child(inp)
div.append_child(label)
return div
class Select(Abstract):
"""Select Widget.
"""
def __init__(self, uid: str, **kwargs):
"""Init
"""
self._multiple = kwargs.get('multiple')
if self._multiple:
kwargs.setdefault('default', [])
self._int_keys = kwargs.get('int_keys', False)
super().__init__(uid, **kwargs)
if self._multiple and not self._name.endswith('[]'):
self._name += '[]'
self._append_none_item = kwargs.get('append_none_item', not self.required)
self._none_item_title = kwargs.get('none_item_title', '--- ' + lang.t('widget@select_none_item') + ' ---')
self._exclude = kwargs.get('exclude', [])
self._items = []
items = kwargs.get('items', [])
if not isinstance(items, (list, tuple)):
raise TypeError('List or tuple expected')
for item in items:
if not (isinstance(item, (list, tuple)) and len(item) == 2):
raise TypeError('Each item must be a list or tuple and have exactly 2 elements')
self._items.append((int(item[0]) if self._int_keys else item[0], item[1]))
def set_val(self, value: Union[int, str, list, tuple, None]):
"""Set value of the widget
"""
if value is not None:
if self._multiple:
if isinstance(value, tuple):
value = list(value)
if not isinstance(value, list):
value = [value]
value = util.cleanup_list(value, True)
if self._int_keys:
if self._multiple:
for i in range(len(value)):
value[i] = int(value[i])
else:
value = int(value)
super().set_val(value)
def _get_select_html_em(self) -> htmler.Element:
select = htmler.Select(
id=self._uid,
name=self.name,
css='form-control',
required=self._required
)
if self._multiple:
select.set_attr('multiple', 'multiple')
if not self._enabled:
select.set_attr('disabled', 'disabled')
if self._placeholder:
select.append_child(htmler.Option(self._placeholder, disabled=True, selected=True, value=''))
if self._append_none_item:
select.append_child(htmler.Option(self._none_item_title, value=''))
for item in self._items:
if self._exclude and item[0] in self._exclude:
continue
option = htmler.Option(item[1], value=item[0])
if self._multiple:
if item[0] in self._value:
option.set_attr('selected', 'true')
else:
if item[0] == self._value:
option.set_attr('selected', 'true')
select.append_child(option)
return select
def _get_element(self, **kwargs) -> htmler.Element:
r = htmler.TagLessElement()
if self._multiple:
r.append_child(htmler.Input(type='hidden', name=self._name))
r.append_child(self._get_select_html_em())
return r
class Select2(Select):
def __init__(self, uid: str, **kwargs):
"""Init
"""
self._theme = kwargs.get('theme', 'default')
self._ajax_url = kwargs.get('ajax_url')
self._ajax_url_query = kwargs.get('ajax_url_query', {})
self._ajax_delay = kwargs.get('ajax_delay', 250)
self._ajax_cache = kwargs.get('ajax_cache', True)
self._linked_select = kwargs.get('linked_select') # type: Select2
self._linked_select_ajax_query_attr = kwargs.get('linked_select_ajax_query_attr')
self._maximum_selection_length = kwargs.get('maximum_selection_length', 0)
self._minimum_input_length = kwargs.get('minimum_input_length', 0)
self._multiple = kwargs.get('multiple', False)
self._tags = kwargs.get('tags', False)
if self._linked_select and not isinstance(self._linked_select, Select2):
raise TypeError('Instance of {} expected, got {}'.format(Select2, type(self._linked_select)))
super().__init__(uid, **kwargs)
def _get_element(self, **kwargs) -> htmler.Element:
select = self._get_select_html_em()
select.set_attr('style', 'width: 100%;')
self._data['linked_select_ajax_query_attr'] = self._linked_select_ajax_query_attr
if self._multiple:
self._data['multiple'] = True
if self._exclude:
exclude = json_dumps([str(excl) for excl in self._exclude])
self._data['exclude'] = exclude
self._ajax_url_query['exclude'] = exclude
if self._linked_select:
self._data['linked_select'] = self._linked_select.uid
self._data['linked_select_value'] = self._linked_select.value
if self._append_none_item:
self._data['append_none_item'] = self._append_none_item
self._data['none_item_title'] = self._none_item_title
if self._ajax_url:
self._data['ajax_url'] = self._ajax_url
self._data['ajax_url_query'] = json_dumps(self._ajax_url_query)
self._data['ajax_delay'] = self._ajax_delay
self._data['ajax_cache'] = self._ajax_cache
select.set_attr('data_theme', self._theme)
select.set_attr('data_minimum_input_length', self._minimum_input_length)
select.set_attr('data_maximum_selection_length', self._maximum_selection_length)
if self._tags:
select.set_attr('data_tags', 'true')
if self._placeholder:
select.set_attr('data_placeholder', self._placeholder)
r = htmler.TagLessElement()
if self._multiple:
r.append_child(htmler.Input(type='hidden', name=self._name))
r.append_child(select)
return r
class Checkboxes(Select):
"""Group of Checkboxes Widget
"""
def __init__(self, uid: str, **kwargs):
"""Init
"""
super().__init__(uid, multiple=True, **kwargs)
self._bootstrap_version = kwargs.get('bootstrap_version', 3)
if self._bootstrap_version not in (3, 4):
self._bootstrap_version = 3
self._item_renderer = kwargs.get('item_renderer', self._default_item_renderer)
def _default_item_renderer(self, item: Tuple[str, str]) -> htmler.Element:
checked = True if item[0] in self.value else False
div = htmler.Div(css='form-check' if self._bootstrap_version == 4 else 'checkbox')
inp = htmler.Input(type='checkbox', name=self.name, value=item[0], checked=checked,
required=self.required)
label = htmler.Label()
if self._bootstrap_version == 3:
label.append_child(inp)
label.append_text(item[1])
div.append_child(label)
elif self._bootstrap_version == 4:
inp.set_attr('css', 'form-check-input')
label.set_attr('css', 'form-check-label')
label.append_text(item[1])
div.append_child(inp)
div.append_child(label)
return div
def _get_element(self, **kwargs) -> htmler.Element:
"""Render the widget
"""
container = htmler.TagLessElement()
container.append_child(htmler.Input(type='hidden', name=self.name)) # It is important to have an empty input!
for item in self._items:
container.append_child(self._item_renderer(item))
return container
class Language(Select):
"""Select Language Widget
"""
def __init__(self, uid: str, **kwargs):
"""Init
"""
super().__init__(uid, **kwargs)
self._items = kwargs.get('items', [])
for code in lang.langs():
self._items.append_child((code, lang.lang_title(code)))
class LanguageNav(Abstract):
"""Language Nav Widget
"""
def __init__(self, uid: str, **kwargs):
"""Init
"""
super().__init__(uid, **kwargs)
self._wrap_em = htmler.Ul()
self._form_group = False
self._has_messages = False
self._dropdown = kwargs.get('dropdown')
self._dropup = kwargs.get('dropup')
self._css += ' nav widget-select-language-nav'
self._language_titles = kwargs.get('language_titles', {})
self._bs_version = kwargs.get('bs_version', 4)
def _get_element(self, **kwargs) -> htmler.Element:
if len(lang.langs()) == 1:
return htmler.TagLessElement()
root = htmler.TagLessElement()
# Dropdown menu
if self._dropdown or self._dropup:
# Root element
if self._bs_version == 3:
self._css += ' navbar-nav'
dropdown_root = htmler.Li(css='dropdown' if self._dropdown else 'dropup')
toggler = htmler.A(
self._language_titles.get(self._language) or lang.lang_title(self.language),
css='dropdown-toggle lang-' + self.language,
data_toggle='dropdown',
role='button',
aria_haspopup='true',
aria_expanded='false',
href='#',
content_first=True)
toggler.append_child(htmler.Span(css='caret'))
dropdown_root.append_child(toggler)
else:
dropdown_root = htmler.Div(css='dropdown' if self._dropdown else 'dropup')
toggler = htmler.Button(
self._language_titles.get(self._language) or lang.lang_title(self.language),
type='button',
css='btn btn-link dropdown-toggle',
data_toggle='dropdown',
aria_haspopup='true',
aria_expanded='false',
)
dropdown_root.append_child(toggler)
# Children
menu_cont_em = htmler.Ul if self._bs_version == 3 else htmler.Div
menu_cont = menu_cont_em(css='dropdown-menu')
for lng in lang.langs(False):
lng_title = self._language_titles.get(lng) or lang.lang_title(lng)
a = htmler.A(lng_title, css='dropdown-item lang-' + lng, href=router.base_url(lang=lng))
hl = hreflang.get(lng)
if hl:
a.set_attr('href', hl)
menu_cont.append_child(htmler.Li(a) if self._bs_version == 3 else a)
dropdown_root.append_child(menu_cont)
root.append_child(dropdown_root)
# Simple list
else:
self._css += ' nav-pills'
for lng in lang.langs():
lng_title = self._language_titles.get(lng) or lang.lang_title(lng)
li = htmler.Li(css='nav-item {}'.format('active' if lng == self._language else ''))
a = htmler.A(lng_title, css='nav-link lang-' + lng, href=router.base_url(lang=lng), title=lng_title)
# Active language
if lng == self._language:
a.set_attr('css', '{} active'.format(a.get_attr('css'))).set_attr('href', router.current_url())
# Inactive language, related link
elif hreflang.get(lng):
a.set_attr('href', hreflang.get(lng))
li.append_child(a)
root.append_child(li)
return root
class DateTime(Text):
"""Date/Time Select Widget
"""
def __init__(self, uid: str, **kwargs):
"""Init
"""
self._datepicker = kwargs.get('datepicker', True)
self._timepicker = kwargs.get('timepicker', True)
self._mask = kwargs.get('mask', True)
self._format = kwargs.get('format')
if not self._format:
c_lang = lang.get_current()
if self._datepicker and self._timepicker:
self._format = '%d.%m.%Y %H:%M' if c_lang in ('ru', 'uk') else '%Y-%m-%d %H:%M'
elif self._datepicker:
self._format = '%d.%m.%Y' if c_lang in ('ru', 'uk') else '%Y-%m-%d'
elif self._timepicker:
self._format = '%H:%M'
super().__init__(uid, **kwargs)
self._autocomplete = 'off'
self.add_rule(validation.rule.DateTime(formats=[self._format]))
def set_val(self, value):
"""Set value of the widget.
"""
if isinstance(value, str) and value:
value = util.parse_date_time(value, [self._format] if self._format else None)
return super().set_val(value)
def get_val(self, **kwargs) -> datetime:
"""Get value of the widget.
"""
return super().get_val(**kwargs)
def _get_element(self, **kwargs) -> htmler.Input:
"""Render the widget
:param **kwargs:
"""
value = self.get_val()
self._data.update({
'datepicker': self._datepicker,
'timepicker': self._timepicker,
'format': self._format.replace('%M', 'i').replace('%', ''),
'mask': self._mask,
})
return super()._get_element(**kwargs).set_attr('value', value.strftime(self._format) if value else '')
class Pager(Abstract):
"""Pagination Widget
"""
def __init__(self, uid: str, total_items: int, per_page: int = 100, visible_numbers: int = 5,
http_api_ep: str = None, **kwargs):
"""Init.
"""
super().__init__(uid, **kwargs)
self._form_group = False
self._has_messages = False
self._total_items = total_items
self._items_per_page = per_page
self._http_api_ep = http_api_ep
self._total_pages = int(ceil(self._total_items / self._items_per_page))
self._visible_numbers = visible_numbers
if self._visible_numbers > self._total_pages:
self._visible_numbers = self._total_pages
# Detect current page
try:
self._current_page = int(router.request().inp.get('page', 1))
except ValueError:
self._current_page = 1
if self._current_page > self._total_pages:
self._current_page = self._total_pages
if self._current_page < 1:
self._current_page = 1
self._data['http_api_ep'] = self._http_api_ep
self._data['total_items'] = self._total_items
self._data['current_page'] = self._current_page
self._data['total_pages'] = self._total_pages
self._data['per_page'] = self._items_per_page
self._data['visible_numbers'] = self._visible_numbers
def _get_element(self, **kwargs) -> htmler.Element:
"""Get widget's HTML element
"""
if self._total_pages == 0:
return htmler.TagLessElement()
start_visible_num = self._current_page - ceil((self._visible_numbers - 1) / 2)
if start_visible_num < 1:
start_visible_num = 1
end_visible_num = start_visible_num + (self._visible_numbers - 1)
if end_visible_num > self._total_pages:
end_visible_num = self._total_pages
start_visible_num = end_visible_num - (self._visible_numbers - 1)
ul = htmler.Ul(css='pagination ' + self._css)
links_url = router.current_url()
# Link to the first page
if start_visible_num > 1:
li = htmler.Li(css='first-page page-item')
a = htmler.A('«', css='page-link', title=lang.t('plugins.widget@first_page'),
href=router.url(links_url, query={'page': 1}))
li.append_child(a)
ul.append_child(li)
# Link to the previous page
li = htmler.Li(css='previous-page page-item')
a = htmler.A('‹', css='page-link', title=lang.t('plugins.widget@previous_page'),
href=router.url(links_url, query={'page': self._current_page - 1}))
li.append_child(a)
ul.append_child(li)
# Links to visible pages
for num in range(start_visible_num, end_visible_num + 1):
li = htmler.Li(css='page page-item', data_page=num)
if self._current_page == num:
li.set_attr('css', 'page page-item active')
a = htmler.A(str(num), css='page-link', title=lang.t('plugins.widget@page_num', {'num': num}),
href=router.url(links_url, query={'page': num}))
li.append_child(a)
ul.append_child(li)
if end_visible_num < self._total_pages:
# Link to the next page
li = htmler.Li(css='next-page page-item')
a = htmler.A('›', css='page-link', title=lang.t('plugins.widget@next_page'),
href=router.url(links_url, query={'page': self._current_page + 1}))
li.append_child(a)
ul.append_child(li)
# Link to the last page
li = htmler.Li(css='last-page page-item')
a = htmler.A('»', css='page-link', title=lang.t('plugins.widget@page_num', {'num': self._total_pages}),
href=router.url(links_url, query={'page': self._total_pages}))
li.append_child(a)
ul.append_child(li)
return ul
def render(self):
if self._total_pages == 1:
self.hide()
return super().render()
@property
def skip(self):
skip = (self._current_page - 1) * self._items_per_page
return skip if skip >= 0 else 0
@property
def limit(self):
return self._items_per_page
@property
def total_items(self):
return self._total_items
@property
def total_pages(self):
return self._total_pages
class Tabs(Abstract):
"""Tabs Widget
"""
def __init__(self, uid: str, **kwargs):
"""Init
"""
super().__init__(uid, **kwargs)
self._tabs = OrderedDict()
def add_tab(self, tab_id: str, title: str):
"""Add a tab.
"""
tab_id = tab_id.replace('.', '-')
if tab_id in self._tabs:
raise RuntimeError("Tab '{}' is already added".format(tab_id))
self._tabs[tab_id] = {'title': title, 'widgets': []}
return self
def add_widget(self, widget: Abstract, tab_id: str = None) -> Abstract:
"""Add a child widget.
"""
if not self._tabs:
raise RuntimeError('At least one tab should exists before you can add widgets')
if not tab_id:
tab_id = list(self._tabs.keys())[0]
self._tabs[tab_id]['widgets'].append(widget)
return widget
def _get_element(self, **kwargs) -> htmler.Element:
tab_panel = htmler.Div(role='tabpanel')
tabs_nav = htmler.Ul(css='nav nav-tabs', role='tablist')
tabs_content = htmler.Div(css='tab-content')
tab_panel.append_child(tabs_nav)
tab_panel.append_child(tabs_content)
tab_count = 0
for tab_id, tab in self._tabs.items():
li = htmler.Li(role='presentation', css='active' if tab_count == 0 else '')
li.append_child(htmler.A(tab['title'], href='#tab-uid-' + tab_id, role='tab', data_toggle='tab'))
tabs_nav.append_child(li)
tab_content_css = 'tabpanel tab-pane'
tab_content_css += ' active' if tab_count == 0 else ''
tab_content_div = htmler.Div('', css=tab_content_css, id='tab-uid-' + tab_id)
tabs_content.append_child(tab_content_div)
for widget in sorted(tab['widgets'], key=lambda x: x.weight): # type: Abstract
tab_content_div.append_child(widget.renderable())
tab_count += 1
return tab_panel
class Score(Abstract):
def __init__(self, uid: str, **kwargs):
"""Init
"""
kwargs['default'] = kwargs.get('default', 3)
super().__init__(uid, **kwargs)
self._min = kwargs.get('min', 1)
self._max = kwargs.get('max', 5)
self._show_numbers = kwargs.get('show_numbers', True)
def _get_element(self, **kwargs) -> htmler.Element:
cont = htmler.Div(css='switches-wrap')
if self._enabled:
cont.append_child(htmler.Input(name=self.uid, type='hidden', value=self.get_val()))
self.css += ' enabled'
for i in range(self._min, self._max + 1):
a = htmler.Span(css='switch score-' + str(i), data_score=str(i))
if self._show_numbers:
a.append_text(str(i))
if i == self.get_val():
a.set_attr('css', a.get_attr('css') + ' active')
cont.append_child(a)
return cont
class TrafficLightScore(Score):
def __init__(self, uid: str, **kwargs):
"""Init
"""
kwargs['default'] = kwargs.get('default', 2)
super().__init__(uid, max=3, show_numbers=False, **kwargs)
class ColorPicker(Text):
def __init__(self, uid: str, **kwargs):
"""Init
"""
super().__init__(uid, **kwargs)
def _get_element(self, **kwargs):
self._data['color'] = self.value
return super()._get_element()
class Breadcrumb(Abstract):
"""Breadcrumb Widget
"""
def __init__(self, uid: str, **kwargs):
"""Init
"""
super().__init__(uid, **kwargs)
self._form_group = False
self._has_messages = False
self._items = list(kwargs.get('items', []))
def _get_element(self) -> htmler.Element:
"""Hook
"""
nav = htmler.Nav(aria_label=self.label, role='navigation')
if self._items:
ol = nav.append_child(htmler.Ol(css='breadcrumb'))
for item in self._items:
item_len = len(item)
if item_len > 1 and item[1]:
ol.append_child(
htmler.Li(htmler.A(util.escape_html(item[0]), href=item[1]), css='breadcrumb-item'))
elif item_len == 1 or (item_len > 1 and not item[1]):
ol.append_child(htmler.Li(util.escape_html(item[0]), css='breadcrumb-item active'))
break
return nav
@property
def items(self) -> List[List[str]]:
"""Get items
"""
return self._items.copy()
def append_item(self, title: str, link: str = None):
"""append_child an item
"""
self._items.append([title, link])
return self
def insert_item(self, title: str, link: str = None, index: int = 0):
"""Insert an item
"""
self._items.insert(index, [title, link])
def pop_item(self, index: int = -1) -> List[str]:
"""Pop an item
"""
return self._items.pop(index)