71582cbcd7
Show RTT measured by ICMP echo request/replies for a given host. For that to work correctly, change the "full_text" callback for a widget so that the widget itself is also passed as argument in the callback method. That actually makes a lot of sense, since the widget can now be used as a repository of state information. see #23
105 lines
3.3 KiB
Python
105 lines
3.3 KiB
Python
# pylint: disable=R0201
|
|
|
|
"""Output classes"""
|
|
|
|
import sys
|
|
import json
|
|
import uuid
|
|
|
|
import bumblebee.store
|
|
|
|
class Widget(bumblebee.store.Store):
|
|
"""Represents a single visible block in the status bar"""
|
|
def __init__(self, full_text="", name=""):
|
|
super(Widget, self).__init__()
|
|
self._full_text = full_text
|
|
self.module = None
|
|
self._module = None
|
|
self.name = name
|
|
self.id = str(uuid.uuid4())
|
|
|
|
def link_module(self, module):
|
|
"""Set the module that spawned this widget
|
|
|
|
This is done outside the constructor to avoid having to
|
|
pass in the module name in every concrete module implementation"""
|
|
self.module = module.name
|
|
self._module = module
|
|
|
|
def state(self):
|
|
"""Return the widget's state"""
|
|
if self._module and hasattr(self._module, "state"):
|
|
states = self._module.state(self)
|
|
if not isinstance(states, list):
|
|
return [states]
|
|
return states
|
|
return []
|
|
|
|
def full_text(self, value=None):
|
|
"""Set or retrieve the full text to display in the widget"""
|
|
if value:
|
|
self._full_text = value
|
|
else:
|
|
if callable(self._full_text):
|
|
return self._full_text(self)
|
|
else:
|
|
return self._full_text
|
|
|
|
class I3BarOutput(object):
|
|
"""Manage output according to the i3bar protocol"""
|
|
def __init__(self, theme):
|
|
self._theme = theme
|
|
self._widgets = []
|
|
|
|
def start(self):
|
|
"""Print start preamble for i3bar protocol"""
|
|
sys.stdout.write(json.dumps({"version": 1, "click_events": True}) + "[\n")
|
|
|
|
def stop(self):
|
|
"""Finish i3bar protocol"""
|
|
sys.stdout.write("]\n")
|
|
|
|
def draw(self, widget, module=None, engine=None):
|
|
"""Draw a single widget"""
|
|
full_text = widget.full_text()
|
|
padding = self._theme.padding(widget)
|
|
prefix = self._theme.prefix(widget, padding)
|
|
suffix = self._theme.suffix(widget, padding)
|
|
if prefix:
|
|
full_text = u"{}{}".format(prefix, full_text)
|
|
if suffix:
|
|
full_text = u"{}{}".format(full_text, suffix)
|
|
separator = self._theme.separator(widget)
|
|
if separator:
|
|
self._widgets.append({
|
|
u"full_text": separator,
|
|
"separator": False,
|
|
"color": self._theme.separator_fg(widget),
|
|
"background": self._theme.separator_bg(widget),
|
|
"separator_block_width": self._theme.separator_block_width(widget),
|
|
})
|
|
self._widgets.append({
|
|
u"full_text": full_text,
|
|
"color": self._theme.fg(widget),
|
|
"background": self._theme.bg(widget),
|
|
"separator_block_width": self._theme.separator_block_width(widget),
|
|
"separator": True if separator is None else False,
|
|
"instance": widget.id,
|
|
"name": module.id,
|
|
})
|
|
|
|
def begin(self):
|
|
"""Start one output iteration"""
|
|
self._widgets = []
|
|
self._theme.reset()
|
|
|
|
def flush(self):
|
|
"""Flushes output"""
|
|
sys.stdout.write(json.dumps(self._widgets))
|
|
|
|
def end(self):
|
|
"""Finalizes output"""
|
|
sys.stdout.write(",\n")
|
|
sys.stdout.flush()
|
|
|
|
# vim: tabstop=8 expandtab shiftwidth=4 softtabstop=4
|