"""This file makes every other line read-only.
This is an example of using overlays"""
# ??? For a real production script, this script should be based
# on gps_utils.highlighter.py, which provides on-the-fly highlighting
from GPS import parse_xml, EditorBuffer
parse_xml("""
readonly.make_readonly()
""")
def make_readonly():
"""Make every other line readonly in the current file"""
buffer = EditorBuffer.get()
loc = buffer.at(1, 1)
overlay = buffer.create_overlay("readonly")
overlay.set_property("editable", False)
while loc < buffer.end_of_buffer():
eol = loc.end_of_line()
buffer.apply_overlay(overlay, loc, eol - 1)
loc = loc.forward_line(2)