70 lines
2 KiB
Python
70 lines
2 KiB
Python
# pylint: disable=R0201
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"""Output classes"""
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import sys
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import json
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class Widget(object):
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"""Represents a single visible block in the status bar"""
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def __init__(self, full_text):
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self._full_text = full_text
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self.module = None
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def link_module(self, module):
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"""Set the module that spawned this widget
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This is done outside the constructor to avoid having to
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pass in the module name in every concrete module implementation"""
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self.module = module.name
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def full_text(self):
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"""Retrieve the full text to display in the widget"""
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if callable(self._full_text):
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return self._full_text()
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else:
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return self._full_text
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class I3BarOutput(object):
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"""Manage output according to the i3bar protocol"""
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def __init__(self, theme):
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self._theme = theme
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self._widgets = []
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def start(self):
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"""Print start preamble for i3bar protocol"""
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sys.stdout.write(json.dumps({"version": 1, "click_events": True}) + "[\n")
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def stop(self):
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"""Finish i3bar protocol"""
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sys.stdout.write("]\n")
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def draw(self, widget, engine=None):
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"""Draw a single widget"""
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full_text = widget.full_text()
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prefix = self._theme.prefix(widget)
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suffix = self._theme.suffix(widget)
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if prefix:
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full_text = u"{}{}".format(prefix, full_text)
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if suffix:
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full_text = u"{}{}".format(full_text, suffix)
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self._widgets.append({
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u"full_text": u"{}".format(full_text),
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"color": self._theme.fg(widget),
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"background": self._theme.bg(widget),
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})
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def begin(self):
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"""Start one output iteration"""
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self._widgets = []
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def flush(self):
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"""Flushes output"""
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sys.stdout.write(json.dumps(self._widgets))
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def end(self):
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"""Finalizes output"""
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sys.stdout.write(",\n")
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sys.stdout.flush()
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# vim: tabstop=8 expandtab shiftwidth=4 softtabstop=4
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