class SongApp(App):
# Using StringProperty to for 2 status label in the main screen and 1 status label for pop up screen
# Using ListProperty for sorted song button
status_text = StringProperty()
status_text1 = StringProperty()
status_text2 = StringProperty()
current_song = StringProperty()
song_codes = ListProperty()
def __init__(self, **kwargs):
super(SongApp, self).__init__(**kwargs)
# open csv file:
datafile = open("songs.csv", "r")
data = datafile.readlines()
newsongs = []
for n in data:
values = n.strip().split(',')
newsongs.append(values)
datafile.close()
self.list_song = Songlist()
# convert list of list into list of object
self.list_song.convert_list(newsongs)
self.song_list_data = self.list_song.print()
# Sort a list of song button
def press_sort_button(self, song_code):
# sort song by name
if song_code == "list of song: (name)":
self.list_song.sort_name()
# sort song by artist
elif song_code == "list of song: (artist)":
self.list_song.sort_artist()
#sort song by year
else:
self.list_song.sort_year()
self.root.ids.entries_box.clear_widgets()
self.create_entry_buttons()
def build(self):
self.title = "Song Application"
self.root = Builder.load_file('app.kv')
self.create_entry_buttons()
self.song_codes = sorted_song.keys()
print(self.song_codes)
self.current_song = self.song_codes[0]
return self.root
def create_entry_buttons(self):
# display if the song is already learned and unlearned, they will display in different color and text
for n in self.song_list_data:
if n.status == "y":
text = '"{}" by {} ({}) (learned)'.format(
n.name, n.artist, int(n.year))
temp_button = Button(text=text, background_color=(0, 1, 0, 1))
temp_button.bind(on_release=self.press_learned)
self.root.ids.entries_box.add_widget(temp_button)
else:
id_song = n.name
text = '"{}" by {} ({})'.format(n.name, n.artist, int(n.year))
temp_button = Button(id=id_song,
text=text,
background_color=(1, 0, 0, 1))
temp_button.bind(on_release=self.press_entry)
self.root.ids.entries_box.add_widget(temp_button)
self.songlabel = self.list_song.get_total_label()
self.status_text1 = self.songlabel
# this function is if the user lick the learned song, the status text will display to notice the user know this song is already learned
def press_learned(self, instance):
n = instance.text
self.status_text2 = "You have already learned this song"
def press_entry(self, instance):
# update status text
n = instance.text
self.list_song.get_songs(instance.id).mark_learned()
self.root.ids.entries_box.clear_widgets()
self.create_entry_buttons()
save_csv = self.list_song.get_song_list()
datafile = open("songs.csv", "w")
for n in save_csv:
datafile.write("{},{},{},{}\n".format(n[0], n[1], n[2], n[3]))
datafile.close()
# function for clear the status
def press_clear(self):
for instance in self.root.ids.entries_box.children:
instance.state = 'normal'
self.status_text2 = ""
def press_add(self):
self.status_text = "Enter details for new Song entry"
# this opens the popup
self.root.ids.popup.open()
# save the song when the user fill in all the information to the table and click save
def press_save(self, added_name, added_number, added_artist):
if self.root.ids.added_name.text == "" or self.root.ids.added_artist.text == "" or self.root.ids.added_number.text == "":
self.status_text = "All fields must be completed"
else:
new_name = self.root.ids.added_name.text
new_artist = self.root.ids.added_artist.text
new_number = self.root.ids.added_number.text
try:
if float(new_number) <= 0:
self.status_text = "Please enter a valid number"
else:
newsong = []
newsong.append(new_name)
newsong.append(new_artist)
newsong.append(new_number)
newsong.append("n")
newsonglist = self.list_song.add_song(newsong)
self.root.ids.entries_box.clear_widgets()
self.create_entry_buttons()
# close popup
self.root.ids.popup.dismiss()
self.clear_fields()
except ValueError:
self.status_text = "Please enter a valid number"
save_csv = self.list_song.get_song_list()
datafile = open("songs.csv", "w")
for n in save_csv:
datafile.write("{},{},{},{}\n".format(n[0], n[1], n[2], n[3]))
datafile.close()
def clear_fields(self):
self.root.ids.added_name.text = ""
self.root.ids.added_artist.text = ""
self.root.ids.added_number.text = ""
def press_cancel(self):
self.root.ids.popup.dismiss()
self.clear_fields()
self.status_text = ""
song_list1 = Songlist()
print(song_list1)
assert len(song_list1.song_lists) == 0
# test loading songs
datafile = open("songs.csv", "r")
data = datafile.readlines()
newsongs = []
for n in data:
values = n.strip().split(',')
newsongs.append(values)
datafile.close
print(newsongs)
assert len(newsongs) > 0 # assuming CSV file is not empty
# TODO: add tests below to show the various required methods work as expected
# test sorting songs
song_list1.sort_name()
print(song_list1.sort_name)
song_list1.sort_artist()
print(song_list1.sort_artist)
song_list1.sort_year()
print(song_list1.sort_year)
# test adding a new Song
# test get_song()
# test getting the number of required and learned songs (separately)
# test saving songs (check CSV file manually to see results)