Auswahl funktioniert nicht, nachdem das Text -Widget -Fokus geändert wurde ⇐ Python

[Anonymous]

Ich habe eine Anwendung mit zwei Text -Widgets in zwei Frames. Klicken Sie in einem Text -Widget (formatierter Text mit einem Tag Bind) (formatierter Text mit einem Tag Bind) (

Code: Select all

Results.text

) sollte Text in einem anderen auswählen (

Code: Select all

Editor.text

).
Wenn ich einmal auf den Link klicke, siehe Teil, mark_set und die Auswahl nicht anwenden. Ich habe versucht, "Break" aus dem Ereignishandler zurückzugeben und mit Focus_set , focus_force , update_idletasks und aktualisiert in der GOTO -Methode ohne Erfolg.

Code: Select all

import math
import tkinter as tk
from tkinter.font import Font
from typing import Any, Callable

LIPSUM = """\
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Pellentesque et lectus lacinia enim dictum posuere. Quisque nunc tellus, luctus quis eleifend a, placerat maximus ipsum.
Nam egestas, nisi in varius tempus, enim tortor consectetur eros, ac pretium urna ipsum at orci. Praesent ut dui eu lectus efficitur ultrices. In vehicula leo faucibus tempor posuere.
Nam et est in nisi iaculis rhoncus eu et nibh. Aliquam eget risus lacus.  Orci varius natoque penatibus et magnis dis parturient montes, nascetur ridiculus mus."""

class Editor(tk.Frame):
def __init__(self, *args: Any, **kwargs: Any):
tk.Frame.__init__(self, *args, **kwargs)

self.grid_rowconfigure(1, weight=1)
self.grid_columnconfigure(1, weight=1)

self.line_num = tk.Text(
self,
width=3,
yscrollcommand=self.scroll_update,
cursor="arrow",
)
self.line_num.tag_configure("rjust", justify="right")
self.line_num.insert("1.0", "1", "rjust")
# disable selection
self.line_num.bindtags((str(self.line_num), str(self), "all"))
self.line_num.grid(row=1, column=0, sticky="ns")
self.text = tk.Text(
self,
yscrollcommand=self.scroll_update,
wrap="none",
)
self.text.bind("", lambda _: self.update_lines())
self.text.grid(row=1, column=1, sticky="nesw")
self.editor_v_sbr = tk.Scrollbar(self, command=self.editor_scroll)
self.editor_v_sbr.grid(row=1, column=2, sticky="ns")
self.editor_h_sbr = tk.Scrollbar(
self, command=self.text.xview, orient="horizontal"   # type:ignore
)
self.editor_h_sbr.grid(row=2, column=0, columnspan=2, sticky="ew")
self.text.config(xscrollcommand=self.editor_h_sbr.set)

def editor_scroll(self, _: Any, position: float):
self.line_num.yview_moveto(position)
self.text.yview_moveto(position)

def scroll_update(self, first: float, last: float):
self.text.yview_moveto(first)
self.line_num.yview_moveto(first)
self.editor_v_sbr.set(first, last)

def update_lines(self, new_text: str | None = None):
if not new_text:
new_text = self.text.get("1.0", "end")
self.line_num.config(state="normal")
self.line_num.delete("1.0", "end")
num_lines = len(new_text.splitlines(True))
if num_lines >= 1000:
new_width = int(math.log10(num_lines)) + 1
self.line_num.config(width=new_width)
self.line_num.insert(
"1.0",
"\n".join([str(x + 1) for x in range(num_lines)]),
"rjust",
)
self.line_num.config(state="disabled")

def view_file(self):
self.text_content = LIPSUM
self.update_lines(self.text_content)
self.text.delete("1.0", "end")
self.text.insert("1.0", self.text_content)

def goto(self, start: tuple[int, int], end: tuple[int, int]):
pos: Callable[[tuple[int, int]], str] = lambda x: f"{x[0]}.{x[1]-1}"
self.text.focus_set()
self.text.see(pos(start))
self.text.mark_set("insert", pos(start))
self.text.tag_remove("sel", "1.0", "end")
self.text.tag_add("sel", pos(start), pos(end))

class Results(tk.LabelFrame):
def __init__(
self,
master: tk.Tk,
goto: Callable[[tuple[int, int], tuple[int, int]], None],
*args: Any,
**kwargs: Any,
):
tk.LabelFrame.__init__(self, master, *args, text="Results", **kwargs)
self.grid_columnconfigure(0, weight=1)
self.grid_rowconfigure(0, weight=1)
self.text = tk.Text(
self,
wrap="none",
)
self.text.insert("end", "Lorem ipsum dolor sit amet\n")
self.text.insert("end", "View in editor", "link")

def callback():
self.goto((1, 1), (1, 27))
return "break"

self.text.tag_bind("link", "", lambda _: callback())
self.link_font = Font(self, "TkDefaultFont")
self.link_font.configure(underline=True)
self.text.tag_configure("link", font=self.link_font, foreground="SlateBlue3")

self.text.configure(state="disabled")
self.text.tag_bind("link", "", self.link_enter)
self.text.tag_bind("link", "", self.link_leave)
self.text.grid(row=0, column=0, sticky="nesw", padx=(10, 0), pady=(10, 0))

self.y_sbr = tk.Scrollbar(self, command=self.text.yview)  # type:ignore
self.y_sbr.grid(row=0, column=1, sticky="ns", padx=(0, 10), pady=(10, 0))
self.x_sbr = tk.Scrollbar(
self, command=self.text.xview, orient="horizontal"  # type:ignore
)
self.x_sbr.grid(row=1, column=0, sticky="ew", pady=(0, 10), padx=(10, 0))
self.text.configure(yscrollcommand=self.y_sbr.set)
self.text.configure(xscrollcommand=self.x_sbr.set)
self.goto = goto

def link_enter(self, _: Any):
self.text.config(cursor="hand2")

def link_leave(self, _: Any):
self.text.config(cursor="")

class App(tk.Tk):
def __init__(self):
tk.Tk.__init__(self)
self.editor = Editor(self)
self.editor.grid(row=0, column=1, sticky="nesw", padx=10, pady=10)
self.results = Results(self, self.editor.goto)
self.results.grid(row=0, column=2, sticky="nesw", padx=10, pady=10)

self.editor.text.focus()

self.editor.view_file()

if __name__ == "__main__":
app = App()
app.mainloop()