#!/usr/bin/env python

import subprocess
import cPickle
import os.path
import os
import sys
import pygtk
pygtk.require('2.0')
import gtk

defaults={}
actions={}

#decorator truff
def action(validator,name=None):
    if name is None:
        def wrapper(action):
            actions[action.__name__]=(action,validator)
    else:
        def wrapper(action):
            actions[name]=(action,validator)
    return wrapper

#validator helper
def has_child_dir(dirname,recursion=0):
    def wrapper(path):
        k=recursion
        ii=""
        while k>=0:
            if os.path.isdir(os.path.join(path,ii,dirname)): return True
            k-=1
            ii=os.path.join("..",ii)
        return False
    return wrapper


def has_child_file(filename):
    def wrapper(path):
        return os.path.isfile(os.path.join(path,filename))
    return wrapper

#do the work
def load_paths(filename="~/.autojump_py",maxpath=10):
    dic_file=os.path.expanduser(filename)

    try:
        aj_file=open(dic_file)
        path_dict=cPickle.load(aj_file)
        aj_file.close()
    except IOError:
        pass

    path_dict=path_dict.items()
    path_dict.sort(key=lambda x: x[1],reverse=True)

    return [path for path,score in path_dict[:maxpath]]

def load_defaults(filename="~/.jumpapplet_py"):
    print "loading settings"
    global defaults
    dic_file=os.path.expanduser(filename)

    try:
        aj_file=open(dic_file,'r')
        defaults=cPickle.load(aj_file)
        aj_file.close()
    except IOError:
        print "no config file"
        pass

    if not "terminal" in defaults: defaults["terminal"]="gnome-terminal"
    if not "navigator" in defaults: defaults["navigator"]="nautilus"

    create_actions()

def save_defaults(filename="~/.jumpapplet_py"):
    print "saving settings"
    dic_file=os.path.expanduser(filename)

    aj_file=open(dic_file,'w')
    cPickle.dump(defaults,aj_file)
    aj_file.close()


def get_actions(path):
    return [(name,action) for name,(action,validator) in actions.items() if validator(path)]

def popup(sender,button,activation):
    paths=load_paths()

    menu=gtk.Menu()
    for path in paths:
        actions=get_actions(path)
        if not actions: continue

        item=gtk.MenuItem(path)
        submenu=gtk.Menu()
        item.set_submenu(submenu)
        for name,action in actions:
            subitem=gtk.MenuItem(name)
            subitem.connect("activate",action,path)
            submenu.append(subitem)
        menu.append(item)

    menu.append(gtk.SeparatorMenuItem())
    
    item=gtk.MenuItem("settings")
    item.connect("activate",settings)
    menu.append(item)
    item=gtk.MenuItem("quit")
    item.connect("activate",quit)
    menu.append(item)

    menu.show_all()
    menu.popup(None,None,gtk.status_icon_position_menu,button,activation,sender)

def settings(sender):
    window=gtk.Window(gtk.WINDOW_TOPLEVEL)
    window.set_title("jump applet settings")

    vbox=gtk.VBox()
    window.add(vbox)
    def add_setting(name):
        label=gtk.Label("%10s: " %name)
        entry=gtk.Entry()
        if name in defaults: entry.set_text(defaults[name])

        hbox=gtk.HBox()
        hbox.add(label)
        hbox.add(entry)
        vbox.add(hbox)
        return (name,entry)

    entries=[]
    entries.append(add_setting("terminal"))
    entries.append(add_setting("navigator"))
    button=gtk.Button("save")
    button.connect("clicked",save_settings,entries,window)
    vbox.add(button)

    window.show_all();

def save_settings(sender,entries,window):
    window.hide_all()
    global defaults
    for name,entry in entries:
        defaults[name]=entry.get_text()

    save_defaults()
    create_actions()
        

def init():
    load_defaults()
    if os.path.isfile("icon.png"): icon=gtk.status_icon_new_from_file("icon.png")
    elif os.path.isfile("/usr/share/autojump/icon.png"): icon=gtk.status_icon_new_from_file("/usr/share/autojump/icon.png")
    icon.set_visible(True)
    icon.connect("popup-menu",popup)

def quit(sender):
    gtk.main_quit()

######################################################
#insert other actions here using the action decorator#
######################################################
def create_actions():
    global actions
    actions={}

    @action(has_child_dir(".git",recursion=3))
    def gitk(sender,path):
        if not os.fork():
            os.chdir(path)
            subprocess.Popen(['gitk']).wait()
            sys.exit()

    @action(has_child_file("CMakeCache.txt"),"configure")
    def cmake(sender,path):
        if not os.fork():
            os.chdir(path)
            subprocess.Popen(['cmake-gui','.']).wait()
            sys.exit()

    @action(os.path.isdir)
    def terminal(sender,path):
        print "launch terminal '%s'" % defaults["terminal"]
        if not os.fork():
            try:
                os.chdir(path)
                subprocess.Popen([defaults["terminal"]]).wait()
            except OSError:
                pass
            sys.exit()

    @action(os.path.isdir)
    def navigator(sender,path):
        print "launch navigator '%s'" % defaults["navigator"]
        if not os.fork():
            try:
                subprocess.Popen([defaults["navigator"],path]).wait()
            except OSError:
                pass
            sys.exit()

if __name__=='__main__':
    init()
    gtk.main()