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Text File  |  2005-10-18  |  7KB  |  170 lines
  1. "Dialog to specify or edit the parameters for a user configured help source."
  2.  
  3. import os
  4. import sys
  5.  
  6. from Tkinter import *
  7. import tkMessageBox
  8. import tkFileDialog
  9.  
  10. class GetHelpSourceDialog(Toplevel):
  11.     def __init__(self, parent, title, menuItem='', filePath=''):
  12.         """Get menu entry and url/ local file location for Additional Help
  13.  
  14.         User selects a name for the Help resource and provides a web url
  15.         or a local file as its source.  The user can enter a url or browse
  16.         for the file.
  17.  
  18.         """
  19.         Toplevel.__init__(self, parent)
  20.         self.configure(borderwidth=5)
  21.         self.resizable(height=FALSE, width=FALSE)
  22.         self.title(title)
  23.         self.transient(parent)
  24.         self.grab_set()
  25.         self.protocol("WM_DELETE_WINDOW", self.Cancel)
  26.         self.parent = parent
  27.         self.result = None
  28.         self.CreateWidgets()
  29.         self.menu.set(menuItem)
  30.         self.path.set(filePath)
  31.         self.withdraw() #hide while setting geometry
  32.         #needs to be done here so that the winfo_reqwidth is valid
  33.         self.update_idletasks()
  34.         #centre dialog over parent:
  35.         self.geometry("+%d+%d" %
  36.                       ((parent.winfo_rootx() + ((parent.winfo_width()/2)
  37.                                                 -(self.winfo_reqwidth()/2)),
  38.                         parent.winfo_rooty() + ((parent.winfo_height()/2)
  39.                                                 -(self.winfo_reqheight()/2)))))
  40.         self.deiconify() #geometry set, unhide
  41.         self.bind('<Return>', self.Ok)
  42.         self.wait_window()
  43.  
  44.     def CreateWidgets(self):
  45.         self.menu = StringVar(self)
  46.         self.path = StringVar(self)
  47.         self.fontSize = StringVar(self)
  48.         self.frameMain = Frame(self, borderwidth=2, relief=GROOVE)
  49.         self.frameMain.pack(side=TOP, expand=TRUE, fill=BOTH)
  50.         labelMenu = Label(self.frameMain, anchor=W, justify=LEFT,
  51.                           text='Menu Item:')
  52.         self.entryMenu = Entry(self.frameMain, textvariable=self.menu,
  53.                                width=30)
  54.         self.entryMenu.focus_set()
  55.         labelPath = Label(self.frameMain, anchor=W, justify=LEFT,
  56.                           text='Help File Path: Enter URL or browse for file')
  57.         self.entryPath = Entry(self.frameMain, textvariable=self.path,
  58.                                width=40)
  59.         self.entryMenu.focus_set()
  60.         labelMenu.pack(anchor=W, padx=5, pady=3)
  61.         self.entryMenu.pack(anchor=W, padx=5, pady=3)
  62.         labelPath.pack(anchor=W, padx=5, pady=3)
  63.         self.entryPath.pack(anchor=W, padx=5, pady=3)
  64.         browseButton = Button(self.frameMain, text='Browse', width=8,
  65.                               command=self.browseFile)
  66.         browseButton.pack(pady=3)
  67.         frameButtons = Frame(self)
  68.         frameButtons.pack(side=BOTTOM, fill=X)
  69.         self.buttonOk = Button(frameButtons, text='OK',
  70.                                width=8, default=ACTIVE,  command=self.Ok)
  71.         self.buttonOk.grid(row=0, column=0, padx=5,pady=5)
  72.         self.buttonCancel = Button(frameButtons, text='Cancel',
  73.                                    width=8, command=self.Cancel)
  74.         self.buttonCancel.grid(row=0, column=1, padx=5, pady=5)
  75.  
  76.     def browseFile(self):
  77.         filetypes = [
  78.             ("HTML Files", "*.htm *.html", "TEXT"),
  79.             ("PDF Files", "*.pdf", "TEXT"),
  80.             ("Windows Help Files", "*.chm"),
  81.             ("Text Files", "*.txt", "TEXT"),
  82.             ("All Files", "*")]
  83.         path = self.path.get()
  84.         if path:
  85.             dir, base = os.path.split(path)
  86.         else:
  87.             base = None
  88.             if sys.platform[:3] == 'win':
  89.                 dir = os.path.join(os.path.dirname(sys.executable), 'Doc')
  90.                 if not os.path.isdir(dir):
  91.                     dir = os.getcwd()
  92.             else:
  93.                 dir = os.getcwd()
  94.         opendialog = tkFileDialog.Open(parent=self, filetypes=filetypes)
  95.         file = opendialog.show(initialdir=dir, initialfile=base)
  96.         if file:
  97.             self.path.set(file)
  98.  
  99.     def MenuOk(self):
  100.         "Simple validity check for a sensible menu item name"
  101.         menuOk = True
  102.         menu = self.menu.get()
  103.         menu.strip()
  104.         if not menu:
  105.             tkMessageBox.showerror(title='Menu Item Error',
  106.                                    message='No menu item specified',
  107.                                    parent=self)
  108.             self.entryMenu.focus_set()
  109.             menuOk = False
  110.         elif len(menu) > 30:
  111.             tkMessageBox.showerror(title='Menu Item Error',
  112.                                    message='Menu item too long:'
  113.                                            '\nLimit 30 characters.',
  114.                                    parent=self)
  115.             self.entryMenu.focus_set()
  116.             menuOk = False
  117.         return menuOk
  118.  
  119.     def PathOk(self):
  120.         "Simple validity check for menu file path"
  121.         pathOk = True
  122.         path = self.path.get()
  123.         path.strip()
  124.         if not path: #no path specified
  125.             tkMessageBox.showerror(title='File Path Error',
  126.                                    message='No help file path specified.',
  127.                                    parent=self)
  128.             self.entryPath.focus_set()
  129.             pathOk = False
  130.         elif path.startswith('www.') or path.startswith('http'):
  131.             pass
  132.         else:
  133.             if path[:5] == 'file:':
  134.                 path = path[5:]
  135.             if not os.path.exists(path):
  136.                 tkMessageBox.showerror(title='File Path Error',
  137.                                        message='Help file path does not exist.',
  138.                                        parent=self)
  139.                 self.entryPath.focus_set()
  140.                 pathOk = False
  141.         return pathOk
  142.  
  143.     def Ok(self, event=None):
  144.         if self.MenuOk() and self.PathOk():
  145.             self.result = (self.menu.get().strip(),
  146.                            self.path.get().strip())
  147.             if sys.platform == 'darwin':
  148.                 path = self.result[1]
  149.                 if (path.startswith('www') or path.startswith('file:')
  150.                     or path.startswith('http:')):
  151.                     pass
  152.                 else:
  153.                     # Mac Safari insists on using the URI form for local files
  154.                     self.result[1] = "file://" + path
  155.             self.destroy()
  156.  
  157.     def Cancel(self, event=None):
  158.         self.result = None
  159.         self.destroy()
  160.  
  161. if __name__ == '__main__':
  162.     #test the dialog
  163.     root = Tk()
  164.     def run():
  165.         keySeq = ''
  166.         dlg = GetHelpSourceDialog(root, 'Get Help Source')
  167.         print dlg.result
  168.     Button(root,text='Dialog', command=run).pack()
  169.     root.mainloop()
  170.