Merge branch '921-scrolling-status-bar'

bumblebee_status/modules/core/scroll.py

@@ -0,0 +1,53 @@
+# pylint: disable=C0111,R0903
+
+"""Displays two widgets that can be used to scroll the whole status bar
+
+Parameters:
+    * scroll.width: Width (in number of widgets) to display
+"""
+
+import core.module
+import core.widget
+import core.input
+import core.event
+
+import util.format
+
+class Module(core.module.Module):
+    def __init__(self, config, theme):
+        super().__init__(config, theme, [])
+        self.__offset = 0
+        self.__widgetcount = 0
+        w = self.add_widget(full_text = "<")
+        core.input.register(w, button=core.input.LEFT_MOUSE, cmd=self.scroll_left)
+        w = self.add_widget(full_text = ">")
+        core.input.register(w, button=core.input.LEFT_MOUSE, cmd=self.scroll_right)
+        self.__width = util.format.asint(self.parameter("width"))
+        config.set("output.width", self.__width)
+        core.event.register("output.done", self.update_done)
+
+
+    def scroll_left(self, _):
+        if self.__offset > 0:
+            core.event.trigger("output.scroll-left")
+
+    def scroll_right(self, _):
+        if self.__offset + self.__width < self.__widgetcount:
+            core.event.trigger("output.scroll-right")
+
+    def update_done(self, offset, widgetcount):
+        self.__offset = offset
+        self.__widgetcount = widgetcount
+
+    def scroll(self):
+        return False
+
+    def state(self, widget):
+        if widget.id == self.widgets()[0].id:
+            if self.__offset == 0:
+                return ["warning"]
+        elif self.__offset + self.__width >= self.__widgetcount:
+            return ["warning"]
+        return []
+
+# vim: tabstop=8 expandtab shiftwidth=4 softtabstop=4