import sublime
import sublime_plugin

# This is a modified version of the Default/font.py file that ships with
# sublime, which includes versions of the increase and decrease font size
# commands that limit the size the font can be at each extreme.

# This includes an event listener that catches any attempt to use the
# "standard" font commands and rewrites the command to use these ones instead.

min_font_size = 14
max_font_size = 26

class IncreaseFontSizeLimitCommand(sublime_plugin.ApplicationCommand):
    def run(self):
        s = sublime.load_settings("Preferences.sublime-settings")
        current = s.get("font_size", 10)

        if current >= 36:
            current += 4
        elif current >= 24:
            current += 2
        else:
            current += 1

        if current > max_font_size:
            current = max_font_size
        s.set("font_size", current)

        sublime.save_settings("Preferences.sublime-settings")


class DecreaseFontSizeLimitCommand(sublime_plugin.ApplicationCommand):
    def run(self):
        s = sublime.load_settings("Preferences.sublime-settings")
        current = s.get("font_size", 10)
        # current -= 1

        if current >= 40:
            current -= 4
        elif current >= 26:
            current -= 2
        else:
            current -= 1

        if current < min_font_size:
            current = min_font_size
        s.set("font_size", current)

        sublime.save_settings("Preferences.sublime-settings")


class FontEventListener(sublime_plugin.EventListener):
    def on_window_command(self, window, command, args):
        if command == "increase_font_size":
            return ("increase_font_size_limit", args)
        elif command == "decrease_font_size":
            return ("decrease_font_size_limit", args)