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"Dialog to specify or edit the parameters for a user configured help source."
import os
import sys
from tkinter import *
import tkinter.messagebox as tkMessageBox
import tkinter.filedialog as tkFileDialog
class GetHelpSourceDialog(Toplevel):
def __init__(self, parent, title, menuItem='', filePath=''):
"""Get menu entry and url/ local file location for Additional Help
User selects a name for the Help resource and provides a web url
or a local file as its source. The user can enter a url or browse
for the file.
"""
Toplevel.__init__(self, parent)
self.configure(borderwidth=5)
self.resizable(height=FALSE, width=FALSE)
self.title(title)
self.transient(parent)
self.grab_set()
self.protocol("WM_DELETE_WINDOW", self.Cancel)
self.parent = parent
self.result = None
self.CreateWidgets()
self.menu.set(menuItem)
self.path.set(filePath)
self.withdraw() #hide while setting geometry
#needs to be done here so that the winfo_reqwidth is valid
self.update_idletasks()
#centre dialog over parent:
self.geometry("+%d+%d" %
((parent.winfo_rootx() + ((parent.winfo_width()/2)
-(self.winfo_reqwidth()/2)),
parent.winfo_rooty() + ((parent.winfo_height()/2)
-(self.winfo_reqheight()/2)))))
self.deiconify() #geometry set, unhide
self.bind('<Return>', self.Ok)
self.wait_window()
def CreateWidgets(self):
self.menu = StringVar(self)
self.path = StringVar(self)
self.fontSize = StringVar(self)
self.frameMain = Frame(self, borderwidth=2, relief=GROOVE)
self.frameMain.pack(side=TOP, expand=TRUE, fill=BOTH)
labelMenu = Label(self.frameMain, anchor=W, justify=LEFT,
text='Menu Item:')
self.entryMenu = Entry(self.frameMain, textvariable=self.menu,
width=30)
self.entryMenu.focus_set()
labelPath = Label(self.frameMain, anchor=W, justify=LEFT,
text='Help File Path: Enter URL or browse for file')
self.entryPath = Entry(self.frameMain, textvariable=self.path,
width=40)
self.entryMenu.focus_set()
labelMenu.pack(anchor=W, padx=5, pady=3)
self.entryMenu.pack(anchor=W, padx=5, pady=3)
labelPath.pack(anchor=W, padx=5, pady=3)
self.entryPath.pack(anchor=W, padx=5, pady=3)
browseButton = Button(self.frameMain, text='Browse', width=8,
command=self.browseFile)
browseButton.pack(pady=3)
frameButtons = Frame(self)
frameButtons.pack(side=BOTTOM, fill=X)
self.buttonOk = Button(frameButtons, text='OK',
width=8, default=ACTIVE, command=self.Ok)
self.buttonOk.grid(row=0, column=0, padx=5,pady=5)
self.buttonCancel = Button(frameButtons, text='Cancel',
width=8, command=self.Cancel)
self.buttonCancel.grid(row=0, column=1, padx=5, pady=5)
def browseFile(self):
filetypes = [
("HTML Files", "*.htm *.html", "TEXT"),
("PDF Files", "*.pdf", "TEXT"),
("Windows Help Files", "*.chm"),
("Text Files", "*.txt", "TEXT"),
("All Files", "*")]
path = self.path.get()
if path:
dir, base = os.path.split(path)
else:
base = None
if sys.platform[:3] == 'win':
dir = os.path.join(os.path.dirname(sys.executable), 'Doc')
if not os.path.isdir(dir):
dir = os.getcwd()
else:
dir = os.getcwd()
opendialog = tkFileDialog.Open(parent=self, filetypes=filetypes)
file = opendialog.show(initialdir=dir, initialfile=base)
if file:
self.path.set(file)
def MenuOk(self):
"Simple validity check for a sensible menu item name"
menuOk = True
menu = self.menu.get()
menu.strip()
if not menu:
tkMessageBox.showerror(title='Menu Item Error',
message='No menu item specified',
parent=self)
self.entryMenu.focus_set()
menuOk = False
elif len(menu) > 30:
tkMessageBox.showerror(title='Menu Item Error',
message='Menu item too long:'
'\nLimit 30 characters.',
parent=self)
self.entryMenu.focus_set()
menuOk = False
return menuOk
def PathOk(self):
"Simple validity check for menu file path"
pathOk = True
path = self.path.get()
path.strip()
if not path: #no path specified
tkMessageBox.showerror(title='File Path Error',
message='No help file path specified.',
parent=self)
self.entryPath.focus_set()
pathOk = False
elif path.startswith(('www.', 'http')):
pass
else:
if path[:5] == 'file:':
path = path[5:]
if not os.path.exists(path):
tkMessageBox.showerror(title='File Path Error',
message='Help file path does not exist.',
parent=self)
self.entryPath.focus_set()
pathOk = False
return pathOk
def Ok(self, event=None):
if self.MenuOk() and self.PathOk():
self.result = (self.menu.get().strip(),
self.path.get().strip())
if sys.platform == 'darwin':
path = self.result[1]
if path.startswith(('www', 'file:', 'http:')):
pass
else:
# Mac Safari insists on using the URI form for local files
self.result = list(self.result)
self.result[1] = "file://" + path
self.destroy()
def Cancel(self, event=None):
self.result = None
self.destroy()
if __name__ == '__main__':
#test the dialog
root = Tk()
def run():
keySeq = ''
dlg = GetHelpSourceDialog(root, 'Get Help Source')
print(dlg.result)
Button(root,text='Dialog', command=run).pack()
root.mainloop()
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