Add a marquee plugin

Using the power of last message corrections

plugins/marquee.py

@@ -0,0 +1,70 @@
+"""
+Marquee plugin: replicate the html <marquee/> tag with message corrections.
+
+Usage of this plugin is not recommended.
+
+Commands
+--------
+
+.. glossary::
+
+    /marquee <text>
+        Send the following text with <marquee/> behavior
+
+Configuration
+-------------
+
+.. glossary::
+    :sorted:
+
+    refresh
+        **Default:** ``1``
+
+        Interval between each correction (the closest to 0 is the fastest)
+
+    total_duration
+        **Default:** ``30``
+
+        Total duration of the animation.
+
+    padding
+        **Default:** ``20``
+
+        Padding to use to move the text.
+
+
+"""
+from plugin import BasePlugin
+import tabs
+from decorators import command_args_parser
+
+def move(text, step, spacing):
+    new_text = text + (" " * spacing)
+    return new_text[-(step % len(new_text)):] + new_text[:-(step % len(new_text))]
+
+class Plugin(BasePlugin):
+    default_config = {"marquee": {"refresh": 1, "total_duration": 30, "padding": 20}}
+
+    def init(self):
+        self.add_tab_command(tabs.MucTab, 'marquee', self.command_marquee, 'Replicate the <marquee/> behavior in a message')
+
+    @command_args_parser.raw
+    def command_marquee(self, args):
+        tab = self.api.current_tab()
+        tab.command_say(args)
+        msg_id = tab.last_sent_message["id"]
+        jid = tab.name
+
+        self.api.add_timed_event(self.api.create_delayed_event(self.config.get("refresh"), self.delayed_event, jid, args, msg_id, 0))
+
+    def delayed_event(self, jid, body, msg_id, duration):
+        if duration >= self.config.get("total_duration"):
+            return
+        message = self.core.xmpp.make_message(jid)
+        message["type"] = "groupchat"
+        message["body"] = move(body, duration, self.config.get("padding"))
+        message["replace"]["id"] = msg_id
+        message.send()
+        self.api.add_timed_event(self.api.create_delayed_event(self.config.get("refresh"), self.delayed_event, jid, body, message["id"], duration + 1))
+
+