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Python Source  |  2000-09-28  |  2.0 KB  |  68 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.     return _setup(text).open(text)
  15.  
  16. def find_again(text):
  17.     return _setup(text).find_again(text)
  18.  
  19. def find_selection(text):
  20.     return _setup(text).find_selection(text)
  21.  
  22. class SearchDialog(SearchDialogBase):
  23.  
  24.     def create_widgets(self):
  25.         f = SearchDialogBase.create_widgets(self)
  26.         self.make_button("Find", self.default_command, 1)
  27.  
  28.     def default_command(self, event=None):
  29.         if not self.engine.getprog():
  30.             return
  31.         if self.find_again(self.text):
  32.             self.close()
  33.  
  34.     def find_again(self, text):
  35.         if not self.engine.getpat():
  36.             self.open(text)
  37.             return 0
  38.         if not self.engine.getprog():
  39.             return 0
  40.         res = self.engine.search_text(text)
  41.         if res:
  42.             line, m = res
  43.             i, j = m.span()
  44.             first = "%d.%d" % (line, i)
  45.             last = "%d.%d" % (line, j)
  46.             try:
  47.                 selfirst = text.index("sel.first")
  48.                 sellast = text.index("sel.last")
  49.                 if selfirst == first and sellast == last:
  50.                     text.bell()
  51.                     return 0
  52.             except TclError:
  53.                 pass
  54.             text.tag_remove("sel", "1.0", "end")
  55.             text.tag_add("sel", first, last)
  56.             text.mark_set("insert", self.engine.isback() and first or last)
  57.             text.see("insert")
  58.             return 1
  59.         else:
  60.             text.bell()
  61.             return 0
  62.  
  63.     def find_selection(self, text):
  64.         pat = text.get("sel.first", "sel.last")
  65.         if pat:
  66.             self.engine.setcookedpat(pat)
  67.         return self.find_again(text)
  68.