toggle_windows.py

# Window toggling (switch back and forth between last two focused windows) for Sublime
# Add to Key Bindings - User:
# {
#    "keys": ["f3"],
#    "command": "toggle_windows"
#  },
# then put toggle_windows.py (this file) into ~/Library/Application Support/Sublime Text 3/Packages/User

import os
import sublime
import sublime_plugin

windows = []
def plugin_loaded():
  global windows
  for window in sublime.windows():
    windows.append(window.id())
  windows = windows[-2:]

def workaround_bug_on_activated():
  id = sublime.active_window().id()
  global windows
  if not windows or windows[-1] != id:
    windows.append(id)
  windows = windows[-2:]

def save_window_id():
  workaround_bug_on_activated()

class toggle_windows_listener(sublime_plugin.EventListener):
  def on_activated(self, view):
    workaround_bug_on_activated()

class toggle_windows_command(sublime_plugin.WindowCommand):
  def run(self):
    current_window = sublime.active_window().id()
    save_window_id()
    switch_to = windows[-1] if windows[-1] != current_window else (windows[-2] if len(windows) > 1 else None)
    if switch_to:
      for window in sublime.windows():
        if window.id() == switch_to:
          window.bring_to_front()
          break

  def focus(self, window_to_move_to):
    print(window_to_move_to.id())
    active_view = window_to_move_to.active_view()
    active_group = window_to_move_to.active_group()

    # In Sublime Text 2 if a folder has no open files in it the active view
    # will return None. This tries to use the actives view and falls back
    # to using the active group

    # Calling focus then the command then focus again is needed to make this
    # work on Windows
    if active_view is not None:
        window_to_move_to.focus_view(active_view)
        window_to_move_to.run_command('focus_neighboring_group')
        window_to_move_to.focus_view(active_view)
        return

    if active_group is not None:
        window_to_move_to.focus_group(active_group)
        window_to_move_to.run_command('focus_neighboring_group')
        window_to_move_to.focus_group(active_group)