Lib/idlelib/FileList.py

   1 # changes by dscherer@cmu.edu
   2 #   - FileList.open() takes an optional 3rd parameter action, which is
   3 #       called instead of creating a new EditorWindow.  This enables
   4 #       things like 'open in same window'.
   5
   6 import os
   7 from Tkinter import *
   8 import tkMessageBox
   9
  10 import WindowList
  11
  12 #$ event <<open-new-window>>
  13 #$ win <Control-n>
  14 #$ unix <Control-x><Control-n>
  15
  16 # (This is labeled as 'Exit'in the File menu)
  17 #$ event <<close-all-windows>>
  18 #$ win <Control-q>
  19 #$ unix <Control-x><Control-c>
  20
  21 class FileList:
  22
  23     from EditorWindow import EditorWindow
  24     EditorWindow.Toplevel = WindowList.ListedToplevel # XXX Patch it!
  25
  26     def __init__(self, root):
  27         self.root = root
  28         self.dict = {}
  29         self.inversedict = {}
  30         self.vars = {} # For EditorWindow.getrawvar (shared Tcl variables)
  31
  32     def open(self, filename, action=None):
  33         assert filename
  34         filename = self.canonize(filename)
  35         if os.path.isdir(filename):
  36             tkMessageBox.showerror(
  37                 "Is A Directory",
  38                 "The path %s is a directory." % `filename`,
  39                 master=self.root)
  40             return None
  41         key = os.path.normcase(filename)
  42         if self.dict.has_key(key):
  43             edit = self.dict[key]
  44             edit.wakeup()
  45             return edit
  46         if not os.path.exists(filename):
  47             tkMessageBox.showinfo(
  48                 "New File",
  49                 "Opening non-existent file %s" % `filename`,
  50                 master=self.root)
  51         if action is None:
  52             return self.EditorWindow(self, filename, key)
  53         else:
  54             return action(filename)
  55
  56     def gotofileline(self, filename, lineno=None):
  57         edit = self.open(filename)
  58         if edit is not None and lineno is not None:
  59             edit.gotoline(lineno)
  60
  61     def new(self):
  62         return self.EditorWindow(self)
  63
  64     def new_callback(self, event):
  65         self.new()
  66         return "break"
  67
  68     def close_all_callback(self, event):
  69         for edit in self.inversedict.keys():
  70             reply = edit.close()
  71             if reply == "cancel":
  72                 break
  73         return "break"
  74
  75     def close_edit(self, edit):
  76         try:
  77             key = self.inversedict[edit]
  78         except KeyError:
  79             print "Don't know this EditorWindow object.  (close)"
  80             return
  81         if key:
  82             del self.dict[key]
  83         del self.inversedict[edit]
  84         if not self.inversedict:
  85             self.root.quit()
  86
  87     def filename_changed_edit(self, edit):
  88         edit.saved_change_hook()
  89         try:
  90             key = self.inversedict[edit]
  91         except KeyError:
  92             print "Don't know this EditorWindow object.  (rename)"
  93             return
  94         filename = edit.io.filename
  95         if not filename:
  96             if key:
  97                 del self.dict[key]
  98             self.inversedict[edit] = None
  99             return
 100         filename = self.canonize(filename)
 101         newkey = os.path.normcase(filename)
 102         if newkey == key:
 103             return
 104         if self.dict.has_key(newkey):
 105             conflict = self.dict[newkey]
 106             self.inversedict[conflict] = None
 107             tkMessageBox.showerror(
 108                 "Name Conflict",
 109                 "You now have multiple edit windows open for %s" % `filename`,
 110                 master=self.root)
 111         self.dict[newkey] = edit
 112         self.inversedict[edit] = newkey
 113         if key:
 114             try:
 115                 del self.dict[key]
 116             except KeyError:
 117                 pass
 118
 119     def canonize(self, filename):
 120         if not os.path.isabs(filename):
 121             try:
 122                 pwd = os.getcwd()
 123             except os.error:
 124                 pass
 125             else:
 126                 filename = os.path.join(pwd, filename)
 127         return os.path.normpath(filename)
 128
 129
 130 def _test():
 131     from EditorWindow import fixwordbreaks
 132     import sys
 133     root = Tk()
 134     fixwordbreaks(root)
 135     root.withdraw()
 136     flist = FileList(root)
 137     if sys.argv[1:]:
 138         for filename in sys.argv[1:]:
 139             flist.open(filename)
 140     else:
 141         flist.new()
 142     if flist.inversedict:
 143         root.mainloop()
 144
 145 if __name__ == '__main__':
 146     _test()