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from tkinter import *

from idlelib import SearchEngine

from idlelib.SearchDialogBase import SearchDialogBase

def _setup(text):

"Create or find the singleton SearchDialog instance."

root = text._root()

engine = SearchEngine.get(root)

if not hasattr(engine, "_searchdialog"):

engine._searchdialog = SearchDialog(root, engine)

return engine._searchdialog

def find(text):

"Handle the editor edit menu item and corresponding event."

pat = text.get("sel.first", "sel.last")

return _setup(text).open(text, pat) # Open is inherited from SDBase.

def find_again(text):

"Handle the editor edit menu item and corresponding event."

return _setup(text).find_again(text)

def find_selection(text):

"Handle the editor edit menu item and corresponding event."

return _setup(text).find_selection(text)

class SearchDialog(SearchDialogBase):

def create_widgets(self):

SearchDialogBase.create_widgets(self)

self.make_button("Find Next", self.default_command, 1)

def default_command(self, event=None):

if not self.engine.getprog():

return

self.find_again(self.text)

def find_again(self, text):

if not self.engine.getpat():

self.open(text)

return False

if not self.engine.getprog():

return False

res = self.engine.search_text(text)

if res:

line, m = res

i, j = m.span()

first = "%d.%d" % (line, i)

last = "%d.%d" % (line, j)

try:

selfirst = text.index("sel.first")

sellast = text.index("sel.last")

if selfirst == first and sellast == last:

text.bell()

return False

except TclError:

pass

text.tag_remove("sel", "1.0", "end")

text.tag_add("sel", first, last)

text.mark_set("insert", self.engine.isback() and first or last)

text.see("insert")

return True

else:

text.bell()

return False

def find_selection(self, text):

pat = text.get("sel.first", "sel.last")

if pat:

self.engine.setcookedpat(pat)

return self.find_again(text)

def _search_dialog(parent): # htest #

'''Display search test box.'''

box = Toplevel(parent)

box.title("Test SearchDialog")

width, height, x, y = list(map(int, re.split('[x+]', parent.geometry())))

box.geometry("+%d+%d"%(x, y + 150))

text = Text(box, inactiveselectbackground='gray')

text.pack()

text.insert("insert","This is a sample string.\n"*5)

def show_find():

text.tag_add(SEL, "1.0", END)

_setup(text).open(text)

text.tag_remove(SEL, "1.0", END)

button = Button(box, text="Search (selection ignored)", command=show_find)

button.pack()

if __name__ == '__main__':

import unittest

unittest.main('idlelib.idle_test.test_searchdialog',

verbosity=2, exit=False)

from idlelib.idle_test.htest import run

run(_search_dialog)

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