"""
##################################################################
a reusable form class, used by getfilegui (and others)
##################################################################
"""
from tkinter import *
entrysize = 40
class Form: # add non-modal form box
def init(self, labels, parent=None): # pass field labels list
labelsize = max(len(x) for x in labels) + 2
box = Frame(parent) # box has rows, buttons
box.pack(expand=YES, fill=X) # rows has row frames
rows = Frame(box, bd=2, relief=GROOVE) # go=button or return key
rows.pack(side=TOP, expand=YES, fill=X) # runs onSubmit method
self.content = {}
for label in labels:
row = Frame(rows)
row.pack(fill=X)
Label(row, text=label, width=labelsize).pack(side=LEFT)
entry = Entry(row, width=entrysize)
entry.pack(side=RIGHT, expand=YES, fill=X)
self.content[label] = entry
Button(box, text='Cancel', command=self.onCancel).pack(side=RIGHT)
Button(box, text='Submit', command=self.onSubmit).pack(side=RIGHT)
box.master.bind('<Return>', (lambda event: self.onSubmit()))
def onSubmit(self): # override this
for key in self.content: # user inputs in
print(key, '\t=>\t', self.content[key].get()) # self.content[k]
def onCancel(self): # override if need
Tk().quit() # default is exit
class DynamicForm(Form):
def init(self, labels=None):
labels = input('Enter field names: ').split()
Form.init(self, labels)
def onSubmit(self):
print('Field values...')
Form.onSubmit(self)
self.onCancel()
if name == 'main':
import sys
if len(sys.argv) == 1:
Form(['Name', 'Age', 'Job']) # precoded fields, stay after submit
else:
DynamicForm() # input fields, go away after submit
mainloop()
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image.png
使用
from form import Form
from tkinter import Tk, mainloop
from tkinter.messagebox import showinfo
import getfile, os
class GetfileForm(Form):
def init(self, oneshot=False):
root = Tk()
root.title('getfilegui')
labels = ['Server Name', 'Port Number', 'File Name', 'Local Dir?']
Form.init(self, labels, root)
self.oneshot = oneshot
def onSubmit(self):
Form.onSubmit(self)
localdir = self.content['Local Dir?'].get()
portnumber = self.content['Port Number'].get()
servername = self.content['Server Name'].get()
filename = self.content['File Name'].get()
if localdir:
os.chdir(localdir)
portnumber = int(portnumber)
getfile.client(servername, portnumber, filename)
showinfo('getfilegui', 'Download complete')
if self.oneshot: Tk().quit() # else stay in last localdir
if name == 'main':
GetfileForm()
mainloop()
