added new system module

* allows to shutdown/reboot the system

bumblebee/modules/system.py

@@ -0,0 +1,77 @@
+# -*- coding: utf-8 -*- 
+# pylint: disable=C0111,R0903
+
+""" system module
+
+adds the possibility to
+	* shutdown
+	* reboot
+the system.
+	
+Per default a confirmation dialog is shown before the actual action is performed.
+	
+Paramters:
+	* system.confirm: show confirmation dialog before performing any action (default: true) 
+"""
+
+import logging
+import bumblebee.input
+import bumblebee.output
+import bumblebee.engine
+import bumblebee.popup_v2
+import functools
+
+try:
+    import Tkinter as tk
+    import tkMessageBox as tkmessagebox
+except ImportError:
+    # python 3
+    try:
+        import tkinter as tk
+        from tkinter import messagebox as tkmessagebox
+    except ImportError:
+        logging.warning("failed to import tkinter - bumblebee popups won't work!")
+
+
+class Module(bumblebee.engine.Module):
+    def __init__(self, engine, config):
+        super(Module, self).__init__(engine, config,
+            bumblebee.output.Widget(full_text=self.text)
+        )
+
+        self._confirm = True
+        if self.parameter("confirm", "true") == "false":
+            self._confirm = False
+
+        engine.input.register_callback(self, button=bumblebee.input.LEFT_MOUSE,
+                                       cmd=self.popup)
+
+    def update(self, widgets):
+       pass 
+
+    def text(self, widget):
+		return ""
+
+    def _on_command(self, header, text, command):
+        do_it = True
+        if self._confirm:
+            root = tk.Tk()
+            root.withdraw()
+            root.focus_set()
+				
+            do_it = tkmessagebox.askyesno(header, text)
+		
+        if do_it:
+            bumblebee.util.execute(command)
+        root.destroy()
+
+
+    def popup(self, widget):
+        menu = bumblebee.popup_v2.PopupMenu()
+        menu.add_menuitem("shutdown", callback=functools.partial(self._on_command, "Shutdown", "Shutdown?", "shutdown -h now"))
+        menu.add_menuitem("reboot", callback=functools.partial(self._on_command, "Reboot", "Reboot?", "reboot"))
+
+        menu.show(widget)
+
+    def state(self, widget):
+        return []

themes/icons/ascii.json

@@ -128,6 +128,9 @@
     "dunst": {
         "muted": { "prefix": "dunst(muted)"},
         "unmuted": { "prefix": "dunst" }
+    },
+	"system": {
+		"prefix": "system"	
 	}
 
 }

themes/icons/awesome-fonts.json

@@ -202,5 +202,8 @@
     },
     "vpn": {
         "prefix": ""
+    },
+	"system": {
+		"prefix": "    "
 	}
 }

themes/icons/ionicons.json

@@ -162,6 +162,9 @@
   "dunst": {
         "muted": { "prefix": "\uf39a"},
         "unmuted": { "prefix": "\uf39b" }
+    },
+  "system": {
+	"prefix": "  \uf2a9  "
   }
 
 }