1 files changed, 86 insertions, 0 deletions
diff --git a/gui/chatlog.py b/gui/chatlog.py
new file mode 100644
index 0000000..aca9564
--- /dev/null
+++ b/gui/chatlog.py
@@ -0,0 +1,86 @@
+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)}