Sublime Text 2 better mouse handling

Default (OSX).sublime-mousemap

[
	// Basic drag select
	{
		"button": "button1", "count": 1,
		"press_command": "drag_select_callback"
	},
	{
		// Select between selection and click location
		"button": "button1", "modifiers": ["shift"],
		"press_command": "drag_select_callback",
		"press_args": {"extend": true}
	},
	{
		"button": "button1", "count": 1, "modifiers": ["super"],
		"press_command": "drag_select_callback",
		"press_args": {"additive": true}
	},
	{
		"button": "button1", "count": 1, "modifiers": ["shift", "super"],
		"press_command": "drag_select_callback",
		"press_args": {"subtractive": true}
	},

	// Drag select by words
	{
		"button": "button1", "count": 2,
		"press_command": "drag_select_callback",
		"press_args": {"by": "words"}
	},
	{
		"button": "button1", "count": 2, "modifiers": ["super"],
		"press_command": "drag_select_callback",
		"press_args": {"by": "words", "additive": true}
	},
	{
		"button": "button1", "count": 2, "modifiers": ["shift", "super"],
		"press_command": "drag_select_callback",
		"press_args": {"by": "words", "subtractive": true}
	},

	// Drag select by lines
	{
		"button": "button1", "count": 3,
		"press_command": "drag_select_callback",
		"press_args": {"by": "lines"}
	},
	{
		"button": "button1", "count": 3, "modifiers": ["super"],
		"press_command": "drag_select_callback",
		"press_args": {"by": "lines", "additive": true}
	},
	{
		"button": "button1", "count": 3, "modifiers": ["shift", "super"],
		"press_command": "drag_select_callback",
		"press_args": {"by": "lines", "subtractive": true}
	},

	// Alt + Mouse 1 Column select
	{
		"button": "button1", "modifiers": ["alt"],
		"press_command": "drag_select_callback",
		"press_args": {"by": "columns"}
	},
	{
		"button": "button1", "modifiers": ["alt", "super"],
		"press_command": "drag_select_callback",
		"press_args": {"by": "columns", "additive": true}
	},
	{
		"button": "button1", "modifiers": ["alt", "shift", "super"],
		"press_command": "drag_select_callback",
		"press_args": {"by": "columns", "subtractive": true}
	},

	// Mouse 3 column select
	{
		"button": "button3",
		"press_command": "drag_select_callback",
		"press_args": {"by": "columns"}
	},
	{
		"button": "button3", "modifiers": ["super"],
		"press_command": "drag_select_callback",
		"press_args": {"by": "columns", "additive": true}
	},
	{
		"button": "button3", "modifiers": ["shift", "super"],
		"press_command": "drag_select_callback",
		"press_args": {"by": "columns", "subtractive": true}
	}
]

mousetest.py

import sublime, sublime_plugin

class DragSelectCallbackCommand(sublime_plugin.TextCommand):
	def run_(self, args):
		for c in sublime_plugin.all_callbacks.setdefault('on_pre_click',[]):
			c.on_pre_click(args)
		
		#We have to make a copy of the selection, otherwise we'll just have
		#a *reference* to the selection which is useless if we're trying to
		#roll back to a previous one.
		old_sel = [r for r in self.view.sel()]
		
		#Only send the event so we don't do an extend or subtract or
		#whatever. We want the only selection to be where they clicked.
		self.view.run_command("drag_select", {'event': args['event']})
		new_sel = self.view.sel()
		click_point = new_sel[0].a
		new_sel.clear()
		map(new_sel.add, old_sel)
		
		self.view.run_command("drag_select", args)
		for c in sublime_plugin.all_callbacks.setdefault('on_post_click',[]):
			c.on_post_click(click_point)

class MouseEventListener(sublime_plugin.EventListener):
	#If we add the callback names to the list of all callbacks, Sublime
	#Text will automatically search for them in future imported classes.
	#You don't actually *need* to inherit from MouseEventListener, but
	#doing so forces you to import this file and therefore forces Sublime
	#to add these to its callback list.
	sublime_plugin.all_callbacks.setdefault('on_pre_click', [])
	sublime_plugin.all_callbacks.setdefault('on_post_click', [])

class MouseEventProcessor(MouseEventListener):
	def on_pre_click(self, args):
		print "on pre click!", args
	def on_post_click(self, point):
		print "on post click!", point