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Text File  |  2003-12-30  |  2KB  |  69 lines
  1. from Tkinter import *
  2. import SearchEngine
  3. from SearchDialogBase import SearchDialogBase
  4.  
  5.  
  6. def _setup(text):
  7.     root = text._root()
  8.     engine = SearchEngine.get(root)
  9.     if not hasattr(engine, "_searchdialog"):
  10.         engine._searchdialog = SearchDialog(root, engine)
  11.     return engine._searchdialog
  12.  
  13. def find(text):
  14.     pat = text.get("sel.first", "sel.last")
  15.     return _setup(text).open(text,pat)
  16.  
  17. def find_again(text):
  18.     return _setup(text).find_again(text)
  19.  
  20. def find_selection(text):
  21.     return _setup(text).find_selection(text)
  22.  
  23. class SearchDialog(SearchDialogBase):
  24.  
  25.     def create_widgets(self):
  26.         f = SearchDialogBase.create_widgets(self)
  27.         self.make_button("Find", self.default_command, 1)
  28.  
  29.     def default_command(self, event=None):
  30.         if not self.engine.getprog():
  31.             return
  32.         if self.find_again(self.text):
  33.             self.close()
  34.  
  35.     def find_again(self, text):
  36.         if not self.engine.getpat():
  37.             self.open(text)
  38.             return False
  39.         if not self.engine.getprog():
  40.             return False
  41.         res = self.engine.search_text(text)
  42.         if res:
  43.             line, m = res
  44.             i, j = m.span()
  45.             first = "%d.%d" % (line, i)
  46.             last = "%d.%d" % (line, j)
  47.             try:
  48.                 selfirst = text.index("sel.first")
  49.                 sellast = text.index("sel.last")
  50.                 if selfirst == first and sellast == last:
  51.                     text.bell()
  52.                     return False
  53.             except TclError:
  54.                 pass
  55.             text.tag_remove("sel", "1.0", "end")
  56.             text.tag_add("sel", first, last)
  57.             text.mark_set("insert", self.engine.isback() and first or last)
  58.             text.see("insert")
  59.             return True
  60.         else:
  61.             text.bell()
  62.             return False
  63.  
  64.     def find_selection(self, text):
  65.         pat = text.get("sel.first", "sel.last")
  66.         if pat:
  67.             self.engine.setcookedpat(pat)
  68.         return self.find_again(text)
  69.