#!/usr/bin/python3
''' a widget that shows only a dir listing
 '''

import sys,os,argparse
from tkinter import *

class DirWidget(Listbox):
	''' a simple widget that shows a list of directories, staring
	at the directory passed into the constructor

	a mouse click or 'enter' key will send a 'selected' signal to
	anyone who connects to this.

	the .. parent directory is shown for all dirs except /

	the most interesting parts of the interface are:
	constructor - send in the directory to view
	method - currentPath() returns text of current path
	signal - selected calls a slot with a single arg: new path
	'''

	def __init__(self, parent, directory='.'):
		super(DirWidget,self).__init__(parent)
		self.directory = directory
		self.refill()
		self.bind("<Key>",self.quickFind)
		self.bind("<Double-Button-1>",self.hit)
		self.bind("<Return>",self.hit)
	def hit(self,event):
		if self.size()==0:
			return
		self.directory = os.path.abspath(self.directory + '/' + self.get(ACTIVE))
		self.refill()
		self.event_generate("<<DirChanged>>")
	def refill(self):
		current,dirs,files =  os.walk(self.directory,followlinks=True).__next__()
		dirs = sorted(dirs, key=lambda s: s.lower())
		if '/' not in dirs:
			dirs = ['..'] + dirs
		self.delete(0,END)
		for d in dirs:
			#li = QListWidgetItem(d,self)
			# replace this with an insert
			self.insert(END,d)
		self.selection_set(0)	
	def currentPath(self):
		return self.directory
	def quickFind(self,event):
		if event.char==None or event.char=='' or event.char==chr(13):
			return
		event.char = event.char.lower()
		if event.char not in 'abcdefghijklmnopqrstuvwxyz0123456789_-.%':
			return
		print("quickFind: "+event.char+"  ")
		for i in range(self.size()):
			print("qf get: " + self.get(i))
			if self.get(i)[0].lower()==event.char:
				self.activate(i)
				self.see(i)
				return
		
if __name__=="__main__":
	def alert(some_event):
		print("dirWidget hit" + str(some_event))
		os.system('notify-send -t 1500 "file: ' + 
			some_event.widget.currentPath() + '"')

	t = Tk()

	dw = DirWidget(t) 
	dw.pack()
	t.bind("<<DirChanged>>",alert)

	Button(t,text="quit",command=t.destroy).pack()
	mainloop()

'''
notes on Listbox
properties: can use []
archivestyle, bg, bd, cursor, disabledforeground, exportselection, font,
fg, height/width, highlightbacground, listvariable, relief, selectbackground,
selectforground, selectmode, state, takefocus, x(y)scrollcommand
methods:
activate(i),bbox(i),curselection(),delete(i,j),get(i,j),index(i),
insert(i,data), itemcget(i), itemconfig(i,option),nearest(y),scan_dragto(x,y),
scan_mark(x,y),see(i),selection_anchor(i),selection_clear(i,j),
selection_includes(i,j),size(),x/yview(),x/yview_moveto(),x/yview_scroll(),
inherit-methods:
after(t,cb),after_cancel(id),after_idle(cb),bell(),bind(seq,cb),
bind_all(seq,cb),bind_class(cn,seq,cb),bindtags(),cget(opt),clipboard_append(t),
clipboard_clear(),column_configure(),config[ure](opt),destroy(),
event_add(v,s),event_delete(v,s),event_generate(s,kw),event_info(),
focus_displayof(),_force(),_get(),_lastfor(),_set(),
grab_current(),_release(),_set(),_set_global(),_status(),
grid_forget(),_propagate(),_remove(),
image_names(),keys(),lift(),lower(),mainloop(),nametowidget(n),
option_add(),_clear(),_get(),_readfile(),
register(f),quit(),rowconfigure(),selection_clear(),_get(),_own(),_own_get(),
tk_focusFollowsMouse(),_focusNext(),_focusPrev(),
unbind(),unbind_all(),unbind_class(),update,update_idletasks(),
wait_variable(v),_visibility(w),_window(w),
winfo_children(),_class(),_containing(),_depth(),_fpixels(n),_geometry(),
 _height(),_id(),_ismapped(),_manager(),_name(),_parent(),_pathname(),_pixels(),
 _pointerx/y(),_reqheight/width(),_rgb(color),_rootx/y(),_screenheight/width(),
 _screenmmheight/width(),_screenvisual(),_toplevel(),_viewable(),x/y()


'''