sublime_view_auto_name.py

import os.path

import sublime
import sublime_plugin

# build 3176: this does not work properly. self.view.set_name() works but it
# seems to sort-of "unlinks" the view from its physical file path, so that if
# the "Save" command is invoked upon this view, a "Save As" dialog will pop up
# even though the view was loaded from an existing file.

# def _dbg(*obj):
#     import datetime
#     print(str(datetime.datetime.now()) + ':', *obj)

class ViewAutoName(sublime_plugin.ViewEventListener):
    @classmethod
    def is_applicable(cls, settings):
        return True

    @classmethod
    def applies_to_primary_view_only(cls):
        return False

    def __init__(self, *args, **kwargs):
        super().__init__(*args, **kwargs)
        self._display_name = None

    def on_load(self):
        # _dbg('ON_LOAD')
        self._auto_name()

    def _auto_name(self):
        if self._display_name:
            if not self.view.name():
                self.view.set_name(self._display_name)
            else:
                self._display_name = None
        else:
            path = self.view.file_name()
            if not path:
                return

            view_name = self.view.name()
            if view_name is not None and view_name[-4:] == '/.py':
                return

            file_name = os.path.basename(path)
            if file_name != '__init__.py':
                return

            parent_dir_name = os.path.basename(os.path.dirname(path))

            self._display_name = parent_dir_name + '/.py'
            self.view.set_name(self._display_name)