class ParserGUI:
# Initialize the class by creating a window with various widgets.
def __init__(self, master):
self.master = master
master.title("JSON Parser")
# Create a Frame for the window that holds all the other widgets used below
mainframe = ttk.Frame(master, padding="5 5 12 12")
mainframe.grid(column=0, row=0, sticky=(N, W, E, S))
master.columnconfigure(0, weight=1)
master.rowconfigure(0, weight=1)
# Creates an empty list that will eventually hold all the keys found in the JSON File.
# Then create a Button that will load a JSON file to parse.
self.keylist = list()
file_button = ttk.Button(mainframe,
text="Load New File",
command=self.new_file)
file_button.grid(column=3, row=3, sticky=(E))
# A Label widget that will display the name of the file currently being parsed
self.name = ttk.Label(mainframe)
self.name.grid(column=5, row=3)
self.name.config(text="No File has Been Loaded")
# A Label and Combobox widget that displays the key the user would like to search for
ttk.Label(mainframe, text="Key to search: ").grid(column=0,
row=0,
sticky=(N, W))
keysearch = StringVar()
self.key_search = ttk.Combobox(mainframe, textvariable=keysearch)
self.key_search['values'] = self.keylist
self.key_search.grid(column=1, row=0)
# A Label and Combobox widget that displays the key the user would like returned to them
ttk.Label(mainframe, text="Key to extract: ").grid(column=0,
row=1,
sticky=(N, W))
keyextract = StringVar()
self.key_extract = ttk.Combobox(mainframe, textvariable=keyextract)
self.key_extract['values'] = self.keylist
self.key_extract.grid(column=1, row=1)
# An optional Label and Entry widget that allows the user to input a string that matches with the key they are searching with.
user_input = ttk.Label(mainframe, text="Content to look for: ")
user_input.grid(column=0, row=2)
self.user_string = StringVar()
string_input = ttk.Entry(mainframe, textvariable=self.user_string)
string_input.grid(column=1, row=2)
# A Button that will start the parsing process
search_button = ttk.Button(mainframe, text="Search", command=self.find)
search_button.grid(column=0, row=3, sticky=(W))
# A Text widget that will display the parsed information
self.results = tk.Text(master, height=10, width=200)
self.results.grid(column=0, row=4, sticky=(N, S, E, W))
# A Scrollbar widget created to easily move across the text box
yscroll = ttk.Scrollbar(master, command=self.results.yview)
yscroll.grid(column=1, row=4, sticky=(N, S, E, W))
self.results['yscrollcommand'] = yscroll.set
# Calls the 'parse' method in FileParser and gives it the search, extract, and uinput parameters
def find(self):
search = self.key_search.get()
extract = self.key_extract.get()
uinput = self.user_string.get()
self.content = self.parser.parse(search, extract, uinput)
self.results.delete(1.0, tk.END) # Clears the current text box
# If there was no content found in the file return a specified message
# Otherwise return the matching data
if not self.content:
self.results.insert(tk.END, "No Matchng Results Found.")
else:
for x in self.content:
self.results.insert(tk.END, x + '\n')
# Has the user select a file to parse, and sends the name of the file to FileParser
# Also resets the Comboboxes to the first key found in the JSON File
# We also set the name label initialized above to the file name found here
def new_file(self):
self.master.filename = filedialog.askopenfilename(
initialdir="./json",
title="Select file",
filetypes=(("json files", "*.json"), ("all files", "*.*")))
self.parser = FileParser(self.master.filename)
self.keylist = self.parser.findKeys()
self.key_search['values'] = self.keylist
self.key_extract['values'] = self.keylist
self.key_search.current(0)
self.key_extract.current(0)
file = os.path.basename(self.master.filename)
self.name.config(text="Current File: " + file)
