Add really basic ticker search bar

kivy_mainline_and_py3.8
Tyler Goodlet 2018-03-02 21:23:12 -05:00
parent 1e7dc38a50
commit 7f3ee8c728
1 changed files with 59 additions and 10 deletions

View File

@ -1,5 +1,5 @@
""" """
Keyboard controls Pager widget + kb controls
""" """
import inspect import inspect
from functools import partial from functools import partial
@ -75,30 +75,74 @@ async def handle_input(widget, patts2funcs: dict, patt_len_limit=3):
class SearchBar(TextInput): class SearchBar(TextInput):
def __init__(self, kbctls: dict, parent, **kwargs): def __init__(self, kbctls: dict, container: 'Widget', pager: 'PagerView',
searcher, **kwargs):
super(SearchBar, self).__init__( super(SearchBar, self).__init__(
multiline=False, multiline=False,
# text='/', hint_text='Ticker Search',
cursor_blink=False,
**kwargs **kwargs
) )
self.foreground_color = self.hint_text_color # actually readable
self.kbctls = kbctls self.kbctls = kbctls
self._container = parent self._container = container
self._pager = pager
self._searcher = searcher
# indicate to ``handle_input`` that search is activated on '/' # indicate to ``handle_input`` that search is activated on '/'
self.kbctls.update({ self.kbctls.update({
('/',): self.handle_input ('/',): self.handle_input
}) })
self._sugg_template = ' '*4 + '{} matches: '
self._matched = []
def suggest(self, matches):
self.suggestion_text = ''
suffix = self._sugg_template.format(len(matches) or "No")
self.suggestion_text = suffix + ' '.join(matches)
def on_text(self, instance, value): def on_text(self, instance, value):
# ``scroll.scroll_to()`` looks super awesome here for when we
# our interproc-ticker protocol def unhighlight(cells):
# async for item in self.async_bind('text'): for cell in cells:
print(value) cell.outline_color = [0]*3
cell.outline_width = 0
self._matched.remove(cell)
if not value:
if self._matched:
unhighlight(self._matched.copy())
return
if not value.isupper():
self.text = value.upper()
return
text = self.text
matches = self._searcher.search(text)
self.suggest(matches.keys())
if matches:
# unhighlight old matches
unmatched = set(self._matched) - set(matches.keys())
unhighlight(unmatched)
for key, widget in matches.items():
cell = widget.get_cell('symbol')
# cell.background_color = [0.4]*3 + [1]
cell.outline_width = 2
cell.outline_color = [0.6] * 3
self._matched.append(cell)
key, widget = list(matches.items())[0]
# ensure first match widget is displayed
self._pager.scroll_to(widget)
async def handle_input(self): async def handle_input(self):
self._container.add_widget(self) # display it self._container.add_widget(self) # display it
self.focus = True # focus immediately (doesn't work from __init__) self.focus = True # focus immediately (doesn't work from __init__)
# wait for <enter> to close search bar # wait for <enter> to close search bar
await self.async_bind('on_text_validate').__aiter__().__anext__() await self.async_bind('on_text_validate').__aiter__().__anext__()
log.debug(f"Seach text is {self.text}")
log.debug("Closing search bar") log.debug("Closing search bar")
self._container.remove_widget(self) # stop displaying self._container.remove_widget(self) # stop displaying
@ -108,7 +152,8 @@ class SearchBar(TextInput):
class PagerView(ScrollView): class PagerView(ScrollView):
"""Pager view that adds less-like scrolling and search. """Pager view that adds less-like scrolling and search.
""" """
def __init__(self, container, nursery, kbctls: dict = None, **kwargs): def __init__(self, container, contained, nursery, kbctls: dict = None,
**kwargs):
super(PagerView, self).__init__(**kwargs) super(PagerView, self).__init__(**kwargs)
self._container = container self._container = container
self.kbctls = kbctls or {} self.kbctls = kbctls or {}
@ -119,7 +164,11 @@ class PagerView(ScrollView):
('d',): partial(self.halfpage_y, 'd'), ('d',): partial(self.halfpage_y, 'd'),
# ('?',): # ('?',):
}) })
self.search = SearchBar(self.kbctls, container) # add contained child widget (can only be one)
self._contained = contained
self.add_widget(contained)
self.search = SearchBar(
self.kbctls, container, self, searcher=contained)
# spawn kb handler task # spawn kb handler task
nursery.start_soon(handle_input, self, self.kbctls) nursery.start_soon(handle_input, self, self.kbctls)