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from kivy.event import EventDispatcher
from kivy.uix.abstractview import AbstractView
from kivy.properties import ListProperty, NumericProperty
from kivy.adapters.simplelistadapter import SimpleListAdapter
from kivy.utils import escape_markup
from kivy.clock import Clock
from kivy.uix.label import Label
# from utils import log_method
from textutils import (links_to_markup, replace_emotes, preprocess,
remove_formatting)
class ChatLog(AbstractView, EventDispatcher):
def __init__(self, **kwargs):
# Check for adapter argument
if 'adapter' not in kwargs:
list_adapter = SimpleListAdapter(data=[], cls=Label)
kwargs['adapter'] = list_adapter
super(ChatLog, self).__init__(**kwargs)
self._views = []
populate = self._trigger_populate = Clock.create_trigger(
self._populate, -1)
fbind = self.fbind
fbind('adapter', populate)
fbind('size', populate)
fbind('pos', populate)
max_lines = NumericProperty(100)
cut_lines = NumericProperty(10)
def _populate(self, *args):
container = self.container
adapter = self.adapter
container.clear_widgets()
self._views = []
for index in range(adapter.get_count()):
item_view = adapter.get_view(index)
self.container.add_widget(item_view)
self._views.append(item_view)
container.height = self._container_height()
def _append(self, msg):
container = self.container
adapter = self.adapter
views = self._views
cl = self.cut_lines
if len(views) >= self.max_lines:
container.clear_widgets(views[:cl])
self._views = views[cl:]
adapter.data = adapter.data[cl:]
adapter.data.append(msg)
item_view = adapter.get_view(adapter.get_count() - 1)
item_view.texture_update()
self._views.append(item_view)
container.add_widget(item_view)
def _container_height(self, *args):
h = 0
for v in self._views:
h += v.height
return h
def append_message(self, msg):
msg = preprocess(msg, (replace_emotes,
remove_formatting))
msg = links_to_markup(escape_markup(msg))
self._append(msg)
self.container.height = self._container_height()
self.children[0].scroll_y = 0
def msg_converter(self, index, msg):
b = (index % 2) * 0.04
return {'text': msg,
'width': self.width,
'background_color': (0 + b, 0.17 + b, 0.21 + b, 1)}
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