Newton_Editor/plugins/autopairs/plugin.py

166 lines
5.0 KiB
Python

# Python imports
import os
import threading
import subprocess
import time
# Lib imports
import gi
gi.require_version('Gtk', '3.0')
from gi.repository import Gtk
# Application imports
from plugins.plugin_base import PluginBase
# NOTE: Threads WILL NOT die with parent's destruction.
def threaded(fn):
def wrapper(*args, **kwargs):
threading.Thread(target=fn, args=args, kwargs=kwargs, daemon=False).start()
return wrapper
# NOTE: Threads WILL die with parent's destruction.
def daemon_threaded(fn):
def wrapper(*args, **kwargs):
threading.Thread(target=fn, args=args, kwargs=kwargs, daemon=True).start()
return wrapper
class Plugin(PluginBase):
def __init__(self):
super().__init__()
self.name = "Autopairs" # NOTE: Need to remove after establishing private bidirectional 1-1 message bus
# where self.name should not be needed for message comms
self.chars = {
"quotedbl": "\"",
"apostrophe": "'",
"parenleft": "(",
"bracketleft": "[",
"braceleft": "{",
"less": "<",
"grave": "`",
}
self.close = {
"\"": "\"",
"'": "'",
"(": ")",
"[": "]",
"{": "}",
"<": ">",
"`": "`",
}
def generate_reference_ui_element(self):
...
def run(self):
...
def subscribe_to_events(self):
self._event_system.subscribe("set_active_src_view", self._set_active_src_view)
self._event_system.subscribe("autopairs", self._autopairs)
def _set_active_src_view(self, source_view):
self._active_src_view = source_view
self._buffer = self._active_src_view.get_buffer()
self._tag_table = self._buffer.get_tag_table()
def _buffer_changed_first_load(self, buffer):
self._do_colorize(buffer)
def _buffer_changed(self, buffer):
tag_table = buffer.get_tag_table()
mark = buffer.get_insert()
iter = buffer.get_iter_at_mark(mark)
tags = iter.get_tags()
def _autopairs(self, keyval_name, ctrl, alt, shift):
if keyval_name in self.chars:
return self.text_insert(self._buffer, keyval_name)
elif ctrl and keyval_name == "Return":
self.move_to_next_line(self._buffer)
# NOTE: All of below to EOF, lovingly taken from Hamad Al Marri's Gamma
# text editor. I did do some cleanup of comments but otherwise pretty
# much the same code just fitted to my plugin architecture.
# Link: https://gitlab.com/hamadmarri/gamma-text-editor
def move_to_next_line(self, buffer):
selection = buffer.get_selection_bounds()
if selection != (): return False
position = buffer.get_iter_at_mark(buffer.get_insert())
if position.ends_line(): return False
position.forward_to_line_end()
buffer.place_cursor(position)
return False
def text_insert(self, buffer, text):
selection = buffer.get_selection_bounds()
if selection == ():
return self.add_close(buffer, text, )
else:
return self.add_enclose(buffer, text, selection)
def add_close(self, buffer, text):
text = self.chars[text]
text += self.close[text]
position = buffer.get_iter_at_mark(buffer.get_insert())
c = position.get_char()
if not c in (" ", "", ";", ":", "\t", ",", ".", "\n", "\r") \
and not c in list(self.close.values()):
return False
buffer.insert(position, text)
position = buffer.get_iter_at_mark(buffer.get_insert())
position.backward_char()
buffer.place_cursor(position)
return True
def add_enclose(self, buffer, text, selection):
(start, end) = selection
selected = buffer.get_text(start, end, False)
if len(selected) <= 3 and selected in ("<", ">", ">>>"
"<<", ">>",
"\"", "'", "`",
"(", ")",
"[", "]",
"{", "}",
"=", "==",
"!=", "==="):
return False
start_mark = buffer.create_mark("startclose", start, False)
end_mark = buffer.create_mark("endclose", end, False)
buffer.begin_user_action()
t = self.chars[text]
buffer.insert(start, t)
end = buffer.get_iter_at_mark(end_mark)
t = self.close[t]
buffer.insert(end, t)
start = buffer.get_iter_at_mark(start_mark)
end = buffer.get_iter_at_mark(end_mark)
end.backward_char()
buffer.select_range(start, end)
buffer.end_user_action()
return True