"Dialog to specify or edit the parameters for a user configured help source."

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import os

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import sys

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from Tkinter import *

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import tkMessageBox

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import tkFileDialog

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class GetHelpSourceDialog(Toplevel):

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def __init__(self, parent, title, menuItem='', filePath='', _htest=False):

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"""Get menu entry and url/ local file location for Additional Help

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User selects a name for the Help resource and provides a web url

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or a local file as its source. The user can enter a url or browse

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for the file.

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_htest - bool, change box location when running htest

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"""

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Toplevel.__init__(self, parent)

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self.configure(borderwidth=5)

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self.resizable(height=FALSE, width=FALSE)

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self.title(title)

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self.transient(parent)

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self.grab_set()

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self.protocol("WM_DELETE_WINDOW", self.Cancel)

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self.parent = parent

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self.result = None

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self.CreateWidgets()

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self.menu.set(menuItem)

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self.path.set(filePath)

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self.withdraw() #hide while setting geometry

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#needs to be done here so that the winfo_reqwidth is valid

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self.update_idletasks()

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#centre dialog over parent. below parent if running htest.

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self.geometry(

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"+%d+%d" % (

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parent.winfo_rootx() +

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(parent.winfo_width()/2 - self.winfo_reqwidth()/2),

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parent.winfo_rooty() +

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((parent.winfo_height()/2 - self.winfo_reqheight()/2)

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if not _htest else 150)))

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self.deiconify() #geometry set, unhide

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self.bind('<Return>', self.Ok)

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self.wait_window()

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def CreateWidgets(self):

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self.menu = StringVar(self)

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self.path = StringVar(self)

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self.fontSize = StringVar(self)

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self.frameMain = Frame(self, borderwidth=2, relief=GROOVE)

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self.frameMain.pack(side=TOP, expand=TRUE, fill=BOTH)

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labelMenu = Label(self.frameMain, anchor=W, justify=LEFT,

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text='Menu Item:')

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self.entryMenu = Entry(self.frameMain, textvariable=self.menu,

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width=30)

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self.entryMenu.focus_set()

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labelPath = Label(self.frameMain, anchor=W, justify=LEFT,

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text='Help File Path: Enter URL or browse for file')

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self.entryPath = Entry(self.frameMain, textvariable=self.path,

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width=40)

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self.entryMenu.focus_set()

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labelMenu.pack(anchor=W, padx=5, pady=3)

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self.entryMenu.pack(anchor=W, padx=5, pady=3)

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labelPath.pack(anchor=W, padx=5, pady=3)

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self.entryPath.pack(anchor=W, padx=5, pady=3)

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browseButton = Button(self.frameMain, text='Browse', width=8,

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command=self.browseFile)

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browseButton.pack(pady=3)

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frameButtons = Frame(self)

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frameButtons.pack(side=BOTTOM, fill=X)

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self.buttonOk = Button(frameButtons, text='OK',

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width=8, default=ACTIVE, command=self.Ok)

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self.buttonOk.grid(row=0, column=0, padx=5,pady=5)

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self.buttonCancel = Button(frameButtons, text='Cancel',

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width=8, command=self.Cancel)

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self.buttonCancel.grid(row=0, column=1, padx=5, pady=5)

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def browseFile(self):

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filetypes = [

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("HTML Files", "*.htm *.html", "TEXT"),

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("PDF Files", "*.pdf", "TEXT"),

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("Windows Help Files", "*.chm"),

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("Text Files", "*.txt", "TEXT"),

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("All Files", "*")]

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path = self.path.get()

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if path:

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dir, base = os.path.split(path)

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else:

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base = None

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if sys.platform[:3] == 'win':

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dir = os.path.join(os.path.dirname(sys.executable), 'Doc')

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if not os.path.isdir(dir):

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dir = os.getcwd()

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else:

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dir = os.getcwd()

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opendialog = tkFileDialog.Open(parent=self, filetypes=filetypes)

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file = opendialog.show(initialdir=dir, initialfile=base)

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if file:

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self.path.set(file)

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def MenuOk(self):

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"Simple validity check for a sensible menu item name"

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menuOk = True

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menu = self.menu.get()

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menu.strip()

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if not menu:

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tkMessageBox.showerror(title='Menu Item Error',

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message='No menu item specified',

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parent=self)

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self.entryMenu.focus_set()

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menuOk = False

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elif len(menu) > 30:

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tkMessageBox.showerror(title='Menu Item Error',

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message='Menu item too long:'

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'\nLimit 30 characters.',

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parent=self)

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self.entryMenu.focus_set()

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menuOk = False

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return menuOk

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def PathOk(self):

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"Simple validity check for menu file path"

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pathOk = True

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path = self.path.get()

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path.strip()

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if not path: #no path specified

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tkMessageBox.showerror(title='File Path Error',

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message='No help file path specified.',

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parent=self)

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self.entryPath.focus_set()

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pathOk = False

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elif path.startswith(('www.', 'http')):

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pass

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else:

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if path[:5] == 'file:':

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path = path[5:]

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if not os.path.exists(path):

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tkMessageBox.showerror(title='File Path Error',

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message='Help file path does not exist.',

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parent=self)

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self.entryPath.focus_set()

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pathOk = False

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return pathOk

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def Ok(self, event=None):

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if self.MenuOk() and self.PathOk():

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self.result = (self.menu.get().strip(),

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self.path.get().strip())

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if sys.platform == 'darwin':

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path = self.result[1]

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if path.startswith(('www', 'file:', 'http:')):

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pass

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else:

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# Mac Safari insists on using the URI form for local files

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self.result = list(self.result)

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self.result[1] = "file://" + path

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self.grab_release()

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self.destroy()

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def Cancel(self, event=None):

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self.result = None

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self.grab_release()

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self.destroy()

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if __name__ == '__main__':

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from idlelib.idle_test.htest import run

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run(GetHelpSourceDialog)

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