Lib/idlelib/FileList.py

   1 import os
   2 from Tkinter import *
   3 import tkMessageBox
   4
   5
   6 class FileList:
   7
   8     from EditorWindow import EditorWindow  # class variable, may be overridden
   9                                            # e.g. by PyShellFileList
  10
  11     def __init__(self, root):
  12         self.root = root
  13         self.dict = {}
  14         self.inversedict = {}
  15         self.vars = {} # For EditorWindow.getrawvar (shared Tcl variables)
  16
  17     def open(self, filename, action=None):
  18         assert filename
  19         filename = self.canonize(filename)
  20         if os.path.isdir(filename):
  21             # This can happen when bad filename is passed on command line:
  22             tkMessageBox.showerror(
  23                 "File Error",
  24                 "%r is a directory." % (filename,),
  25                 master=self.root)
  26             return None
  27         key = os.path.normcase(filename)
  28         if self.dict.has_key(key):
  29             edit = self.dict[key]
  30             edit.top.wakeup()
  31             return edit
  32         if action:
  33             # Don't create window, perform 'action', e.g. open in same window
  34             return action(filename)
  35         else:
  36             return self.EditorWindow(self, filename, key)
  37
  38     def gotofileline(self, filename, lineno=None):
  39         edit = self.open(filename)
  40         if edit is not None and lineno is not None:
  41             edit.gotoline(lineno)
  42
  43     def new(self, filename=None):
  44         return self.EditorWindow(self, filename)
  45
  46     def close_all_callback(self, event):
  47         for edit in self.inversedict.keys():
  48             reply = edit.close()
  49             if reply == "cancel":
  50                 break
  51         return "break"
  52
  53     def unregister_maybe_terminate(self, edit):
  54         try:
  55             key = self.inversedict[edit]
  56         except KeyError:
  57             print "Don't know this EditorWindow object.  (close)"
  58             return
  59         if key:
  60             del self.dict[key]
  61         del self.inversedict[edit]
  62         if not self.inversedict:
  63             self.root.quit()
  64
  65     def filename_changed_edit(self, edit):
  66         edit.saved_change_hook()
  67         try:
  68             key = self.inversedict[edit]
  69         except KeyError:
  70             print "Don't know this EditorWindow object.  (rename)"
  71             return
  72         filename = edit.io.filename
  73         if not filename:
  74             if key:
  75                 del self.dict[key]
  76             self.inversedict[edit] = None
  77             return
  78         filename = self.canonize(filename)
  79         newkey = os.path.normcase(filename)
  80         if newkey == key:
  81             return
  82         if self.dict.has_key(newkey):
  83             conflict = self.dict[newkey]
  84             self.inversedict[conflict] = None
  85             tkMessageBox.showerror(
  86                 "Name Conflict",
  87                 "You now have multiple edit windows open for %r" % (filename,),
  88                 master=self.root)
  89         self.dict[newkey] = edit
  90         self.inversedict[edit] = newkey
  91         if key:
  92             try:
  93                 del self.dict[key]
  94             except KeyError:
  95                 pass
  96
  97     def canonize(self, filename):
  98         if not os.path.isabs(filename):
  99             try:
 100                 pwd = os.getcwd()
 101             except os.error:
 102                 pass
 103             else:
 104                 filename = os.path.join(pwd, filename)
 105         return os.path.normpath(filename)
 106
 107
 108 def _test():
 109     from EditorWindow import fixwordbreaks
 110     import sys
 111     root = Tk()
 112     fixwordbreaks(root)
 113     root.withdraw()
 114     flist = FileList(root)
 115     if sys.argv[1:]:
 116         for filename in sys.argv[1:]:
 117             flist.open(filename)
 118     else:
 119         flist.new()
 120     if flist.inversedict:
 121         root.mainloop()
 122
 123 if __name__ == '__main__':
 124     _test()