105 lines
3.2 KiB
Python
105 lines
3.2 KiB
Python
|
from idlelib.WidgetRedirector import WidgetRedirector
|
||
|
|
from idlelib.Delegator import Delegator
|
||
|
|
|
||
|
|
class Percolator:
|
||
|
|
|
||
|
|
def __init__(self, text):
|
||
|
|
# XXX would be nice to inherit from Delegator
|
||
|
|
self.text = text
|
||
|
|
self.redir = WidgetRedirector(text)
|
||
|
|
self.top = self.bottom = Delegator(text)
|
||
|
|
self.bottom.insert = self.redir.register("insert", self.insert)
|
||
|
|
self.bottom.delete = self.redir.register("delete", self.delete)
|
||
|
|
self.filters = []
|
||
|
|
|
||
|
|
def close(self):
|
||
|
|
while self.top is not self.bottom:
|
||
|
|
self.removefilter(self.top)
|
||
|
|
self.top = None
|
||
|
|
self.bottom.setdelegate(None); self.bottom = None
|
||
|
|
self.redir.close(); self.redir = None
|
||
|
|
self.text = None
|
||
|
|
|
||
|
|
def insert(self, index, chars, tags=None):
|
||
|
|
# Could go away if inheriting from Delegator
|
||
|
|
self.top.insert(index, chars, tags)
|
||
|
|
|
||
|
|
def delete(self, index1, index2=None):
|
||
|
|
# Could go away if inheriting from Delegator
|
||
|
|
self.top.delete(index1, index2)
|
||
|
|
|
||
|
|
def insertfilter(self, filter):
|
||
|
|
# Perhaps rename to pushfilter()?
|
||
|
|
assert isinstance(filter, Delegator)
|
||
|
|
assert filter.delegate is None
|
||
|
|
filter.setdelegate(self.top)
|
||
|
|
self.top = filter
|
||
|
|
|
||
|
|
def removefilter(self, filter):
|
||
|
|
# XXX Perhaps should only support popfilter()?
|
||
|
|
assert isinstance(filter, Delegator)
|
||
|
|
assert filter.delegate is not None
|
||
|
|
f = self.top
|
||
|
|
if f is filter:
|
||
|
|
self.top = filter.delegate
|
||
|
|
filter.setdelegate(None)
|
||
|
|
else:
|
||
|
|
while f.delegate is not filter:
|
||
|
|
assert f is not self.bottom
|
||
|
|
f.resetcache()
|
||
|
|
f = f.delegate
|
||
|
|
f.setdelegate(filter.delegate)
|
||
|
|
filter.setdelegate(None)
|
||
|
|
|
||
|
|
def _percolator(parent):
|
||
|
|
import tkinter as tk
|
||
|
|
import re
|
||
|
|
class Tracer(Delegator):
|
||
|
|
def __init__(self, name):
|
||
|
|
self.name = name
|
||
|
|
Delegator.__init__(self, None)
|
||
|
|
def insert(self, *args):
|
||
|
|
print(self.name, ": insert", args)
|
||
|
|
self.delegate.insert(*args)
|
||
|
|
def delete(self, *args):
|
||
|
|
print(self.name, ": delete", args)
|
||
|
|
self.delegate.delete(*args)
|
||
|
|
root = tk.Tk()
|
||
|
|
root.title("Test Percolator")
|
||
|
|
width, height, x, y = list(map(int, re.split('[x+]', parent.geometry())))
|
||
|
|
root.geometry("+%d+%d"%(x, y + 150))
|
||
|
|
text = tk.Text(root)
|
||
|
|
p = Percolator(text)
|
||
|
|
t1 = Tracer("t1")
|
||
|
|
t2 = Tracer("t2")
|
||
|
|
|
||
|
|
def toggle1():
|
||
|
|
if var1.get() == 0:
|
||
|
|
var1.set(1)
|
||
|
|
p.insertfilter(t1)
|
||
|
|
elif var1.get() == 1:
|
||
|
|
var1.set(0)
|
||
|
|
p.removefilter(t1)
|
||
|
|
|
||
|
|
def toggle2():
|
||
|
|
if var2.get() == 0:
|
||
|
|
var2.set(1)
|
||
|
|
p.insertfilter(t2)
|
||
|
|
elif var2.get() == 1:
|
||
|
|
var2.set(0)
|
||
|
|
p.removefilter(t2)
|
||
|
|
|
||
|
|
text.pack()
|
||
|
|
var1 = tk.IntVar()
|
||
|
|
cb1 = tk.Checkbutton(root, text="Tracer1", command=toggle1, variable=var1)
|
||
|
|
cb1.pack()
|
||
|
|
var2 = tk.IntVar()
|
||
|
|
cb2 = tk.Checkbutton(root, text="Tracer2", command=toggle2, variable=var2)
|
||
|
|
cb2.pack()
|
||
|
|
|
||
|
|
root.mainloop()
|
||
|
|
|
||
|
|
if __name__ == "__main__":
|
||
|
|
from idlelib.idle_test.htest import run
|
||
|
|
run(_percolator)
|