[modules] Re-enable nic module + allow widget states

All callback from a widget into a module (e.g. for retrieving the status
or the criticality state) now get a widget passed. This has the purpose
of allowing a module to store state/widget specific data somewhere. This
way, for instance, it is possible to store the interface name as part of
the widget, thus making it possible to show the status of the correct
interface.

bumblebee/module.py

@@ -36,24 +36,16 @@ class Module(object):
         self._config = config
         self._output = output
 
-    def data(self):
+    def critical(self, widget):
-        pass
-
-    def critical(self):
         return False
 
-    def warning(self):
+    def warning(self, widget):
         return False
 
-    def state(self):
+    def state(self, widget):
         return "default"
 
-    def instance(self):
+    def instance(self, widget):
         return None
 
-    def next(self):
-        return False
-
-
-
 # vim: tabstop=8 expandtab shiftwidth=4 softtabstop=4

bumblebee/modules/battery.py

@@ -24,13 +24,13 @@ class Module(bumblebee.module.Module):
 
         return bumblebee.output.Widget(self,"{:02d}%".format(self._capacity))
 
-    def warning(self):
+    def warning(self, widget):
         return self._capacity < self._config.parameter("battery.warning", 20)
 
-    def critical(self):
+    def critical(self, widget):
         return self._capacity < self._config.parameter("battery.critical", 10)
 
-    def state(self):
+    def state(self, widget):
         with open("/sys/class/power_supply/{}/status".format(self._battery)) as f:
             self._status = f.read().strip()
 

bumblebee/modules/cpu.py

@@ -23,10 +23,10 @@ class Module(bumblebee.module.Module):
         self._perc = psutil.cpu_percent(percpu=False)
         return bumblebee.output.Widget(self, "{:05.02f}%".format(self._perc))
 
-    def warning(self):
+    def warning(self, widget):
         return self._perc > self._config.parameter("cpu.warning", 70)
 
-    def critical(self):
+    def critical(self, widget):
         return self._perc > self._config.parameter("cpu.critical", 80)
 
 # vim: tabstop=8 expandtab shiftwidth=4 softtabstop=4

bumblebee/modules/disk.py

@@ -33,13 +33,13 @@ class Module(bumblebee.module.Module):
             bumblebee.util.bytefmt(self._size), self._perc)
         )
 
-    def instance(self):
+    def instance(self, widget):
         return self._path
 
-    def warning(self):
+    def warning(self, widget):
         return self._perc > self._config.parameter("disk.warning", 80)
 
-    def critical(self):
+    def critical(self, widget):
         return self._perc > self._config.parameter("disk.critical", 90)
 
 # vim: tabstop=8 expandtab shiftwidth=4 softtabstop=4

bumblebee/modules/memory.py

@@ -12,24 +12,28 @@ def description():
     return "Shows available RAM, total amount of RAM and the percentage of available RAM."
 
 class Module(bumblebee.module.Module):
-    def __init__(self, output, args):
+    def __init__(self, output, config):
-        super(Module, self).__init__(args)
+        super(Module, self).__init__(output, config)
         self._mem = psutil.virtual_memory()
 
         output.add_callback(module=self.__module__, button=1,
             cmd="gnome-system-monitor")
 
-    def data(self):
+    def widgets(self):
         self._mem = psutil.virtual_memory()
 
         used = self._mem.total - self._mem.available
 
-        return "{}/{} ({:05.02f}%)".format(bumblebee.util.bytefmt(used), bumblebee.util.bytefmt(self._mem.total), self._mem.percent)
+        return bumblebee.output.Widget(self, "{}/{} ({:05.02f}%)".format(
+            bumblebee.util.bytefmt(used),
+            bumblebee.util.bytefmt(self._mem.total),
+            self._mem.percent)
+        )
 
-    def warning(self):
+    def warning(self, widget):
-        return self._mem.percent < 20
+        return self._mem.percent < self._config.parameter("memory.warning", 20)
 
-    def critical(self):
+    def critical(self, widget):
-        return self._mem.percent < 10
+        return self._mem.percent < self._config.parameter("memory.critical", 10)
 
 # vim: tabstop=8 expandtab shiftwidth=4 softtabstop=4

bumblebee/modules/nic.py

@@ -12,72 +12,59 @@ def description():
     return "Displays the names, IP addresses and status of each available interface."
 
 class Module(bumblebee.module.Module):
-    def __init__(self, output, args):
+    def __init__(self, output, config):
-        super(Module, self).__init__(args)
+        super(Module, self).__init__(output, config)
         self._exclude = ( "lo", "virbr", "docker", "vboxnet" )
-        self._interfaces = [ i for i in netifaces.interfaces() if not i.startswith(self._exclude) ]
-        self._index = 0
-        self._intf = self._interfaces[0] if len(self._interfaces) > 0 else None
-        self._cache = {}
         self._state = "down"
 
-    def data(self):
+    def widgets(self):
-        if len(self._interfaces) <= self._index:
+        result = []
-            return "n/a"
+        interfaces = [ i for i in netifaces.interfaces() if not i.startswith(self._exclude) ]
-        self._intf = self._interfaces[self._index]
-        self._state = "down"
         addr = []
-
+        state = "down"
+        for intf in interfaces:
             try:
-            if netifaces.AF_INET in netifaces.ifaddresses(self._intf):
+                if netifaces.AF_INET in netifaces.ifaddresses(intf):
-                for ip in netifaces.ifaddresses(self._intf)[netifaces.AF_INET]:
+                    for ip in netifaces.ifaddresses(intf)[netifaces.AF_INET]:
                         if "addr" in ip and ip["addr"] != "":
                             addr.append(ip["addr"])
-                        self._state = "up"
+                            state = "up"
             except Exception as e:
-            self._state = "down"
                 addr = []
+            widget = bumblebee.output.Widget(self, "{} {} {}".format(
+                intf, state, ", ".join(addr)
+            ))
+            widget.set("intf", intf)
+            widget.set("state", state)
+            result.append(widget)
 
-        return "{} {} {}".format(self._intf, self._state, ", ".join(addr))
+        return result
-
-    def next(self):
-        self._index += 1
-        if self._index < len(self._interfaces):
-            return True
-        self._index = 0
-        # reload to support hotplug
-        self._interfaces = [ i for i in netifaces.interfaces() if not i.startswith(self._exclude) ]
-        return False
 
     def _iswlan(self, intf):
-        if not "wlan{}".format(intf) in self._cache:
         iw = pyroute2.IW()
         ip = pyroute2.IPRoute()
         idx = ip.link_lookup(ifname=intf)[0]
         try:
             iw.get_interface_by_ifindex(idx)
-                self._cache["wlan{}".format(intf)] = True
+            return True
         except Exception as e:
-                self._cache["wlan{}".format(intf)] = False
+            return False
-        return self._cache["wlan{}".format(intf)]
 
     def _istunnel(self, intf):
         return intf.startswith("tun")
 
-    def instance(self):
+    def state(self, widget):
-        return self._intf
+        intf = widget.get("intf")
+        t = "wireless" if self._iswlan(intf) else "wired"
 
-    def state(self):
+        t = "tunnel" if self._istunnel(intf) else t
-        t = "wireless" if self._iswlan(self._intf) else "wired"
 
-        t = "tunnel" if self._istunnel(self._intf) else t
+        return "{}-{}".format(t, widget.get("state"))
 
-        return "{}-{}".format(t, self._state)
+    def warning(self, widget):
+        return widget.get("state") != "up"
 
-    def warning(self):
+    def critical(self, widget):
-        return self._state != "up"
+        return widget.get("state") == "down"
-
-    def critical(self):
-        return self._state == "down"
 
 # vim: tabstop=8 expandtab shiftwidth=4 softtabstop=4

bumblebee/output.py

@@ -8,15 +8,22 @@ class Widget(object):
     def __init__(self, obj, text):
         self._obj = obj
         self._text = text
+        self._store = {}
+
+    def set(self, key, value):
+        self._store[key] = value
+
+    def get(self, key, default=None):
+        return self._store.get(key, default)
 
     def state(self):
-        return self._obj.state()
+        return self._obj.state(self)
 
     def warning(self):
-        return self._obj.warning()
+        return self._obj.warning(self)
 
     def critical(self):
-        return self._obj.critical()
+        return self._obj.critical(self)
 
     def module(self):
         return self._obj.__module__.split(".")[-1]
@@ -25,7 +32,7 @@ class Widget(object):
         return self._obj.__module__
 
     def instance(self):
-        rv = getattr(self._obj, "instance")()
+        rv = getattr(self._obj, "instance")(self)
 
     def text(self):
         return self._text