TKINTER文本自动填充

Question

我正在尝试使用TKINTER为PYTHON做一个简单的个人IDE。我以前已经看过它，并有所有形式的语法突出显示到内置终端，但没有自动填充的问题。我知道您可以使用许多方法在入口中使用自动填充，但是在使用文本条目搜索自动填充后，我找不到任何东西。如果我能得到一些帮助，那就太好了！我正在寻找类似于这里看到的东西。

类似想法的代码：

from ttkwidgets.autocomplete import AutocompleteEntry
from tkinter import *

countries = [
        'Antigua and Barbuda', 'Bahamas','Barbados','Belize', 'Canada',
        'Costa Rica ', 'Cuba', 'Dominica', 'Dominican Republic', 'El Salvador ',
        'Grenada', 'Guatemala ', 'Haiti', 'Honduras ', 'Jamaica', 'Mexico',
        'Nicaragua', 'Saint Kitts and Nevis', 'Panama ', 'Saint Lucia', 
        'Saint Vincent and the Grenadines', 'Trinidad and Tobago', 'United States of America'
        ]

ws = Tk()
ws.title('PythonGuides')
ws.geometry('400x300')
ws.config(bg='#f25252')

frame = Frame(ws, bg='#f25252')
frame.pack(expand=True)

Label(
    frame, 
    bg='#f25252',
    font = ('Times',21),
    text='Countries in North America '
    ).pack()

entry = AutocompleteEntry(
    frame, 
    width=30, 
    font=('Times', 18),
    completevalues=countries
    )
entry.pack()

ws.mainloop()

Answer 1

基本算法非常简单：

• 拦截密钥发行（在TKINTER自动插入文本后发生的键）在
• 光标之前获取单词
• 对于基本的自动完整功能， 添加的零件以使未来的按键将替换它，

您还可以为选项卡键添加一个绑定，该键可以查看是否有可见的自动完整文本，并将光标移至末端。

这是一个非常有黑客的示例来说明该原理，尽管它缺乏任何防弹，优化或处理边缘案例，例如回头架时，在单词中间打字，选择替代替换等等

。这不是实现自动完成的最佳方法，它仅说明了这些概念。

import tkinter as tk

class AutocompleteText(tk.Text):
    def __init__(self, *args, **kwargs):
        self.callback = kwargs.pop("autocomplete", None)
        super().__init__(*args, **kwargs)

        # bind on key release, which will happen after tkinter
        # inserts the typed character
        self.bind("<Any-KeyRelease>", self._autocomplete)

        # special handling for tab, which needs to happen on the
        # key _press_
        self.bind("<Tab>", self._handle_tab)

    def _handle_tab(self, event):
        # see if any text has the "autocomplete" tag
        tag_ranges= self.tag_ranges("autocomplete")
        if tag_ranges:
            # move the insertion cursor to the end of
            # the selected text, and then remove the "sel"
            # and "autocomplete" tags
            self.mark_set("insert", tag_ranges[1])
            self.tag_remove("sel", "1.0", "end")
            self.tag_remove("autocomplete", "1.0", "end")

            # prevent the default behavior of inserting a literal tab
            return "break"

    def _autocomplete(self, event):
        if event.char and self.callback:
            # get word preceeding the insertion cursor
            word = self.get("insert-1c wordstart", "insert-1c wordend")

            # pass word to callback to get possible matches
            matches = self.callback(word)

            if matches:
                # autocomplete on the first match
                remainder = matches[0][len(word):]

                # remember the current insertion cursor
                insert = self.index("insert")

                # insert at the insertion cursor the remainder of
                # the matched word, and apply the tag "sel" so that
                # it is selected. Also, add the "autocomplete" text
                # which will make it easier to find later.
                self.insert(insert, remainder, ("sel", "autocomplete"))

                # move the cursor back to the saved position
                self.mark_set("insert", insert)


def get_matches(word):
    # For illustrative purposes, pull possible matches from 
    # what has already been typed. You could just as easily 
    # return a list of pre-defined keywords.
    words = text.get("1.0", "end-1c").split()
    matches = [x for x in words if x.startswith(word)]
    return matches

root = tk.Tk()
text = AutocompleteText(root, autocomplete=get_matches)
text.pack(fill="both", expand=True)

root.mainloop()

Answer 2

今天，我告诉您如何使用ListBox创建AutoCompeAtion输入框，而无需OOP。
如果您不知道OOP可能会为您提供帮助。

您可以创建自动完成输入框和搜索框，只有一条线差。

from tkinter import *
import re

root=Tk()


def fun1(event, *args, **kwargs):
      global data
      if (e.get()==''):
            lb.place_forget()            
            lb.delete(0, END)
       
      else:
            lb.delete(0, END)
            value=e.get()
            lb.place(x=0, y=20)

            for items in data:
                        if (re.search(value, items, re.IGNORECASE)):    
                                    lb.insert(END, items)
                                
        
            print(value)
            pass
        
        



def CurSelet(evt):

  

    valued=lb.get(ACTIVE)
    e.delete(0, END)
    e.insert(END, valued)
    lb.place_forget() 

    print( valued)
        





def  down(ddd):
 
                  lb.focus()
                  lb.selection_set(0)

s=StringVar()


e=Entry(root,     textvariable=s)
e.grid(row=2, column=2)

s.trace('w', fun1)


e.bind('<Down>',     down)


for i in range(4,12):
      ee=Entry(root)
      ee.grid(row=i, column=2)



data=['Angular', 'action Script', 'Basic', 'GW-Basic' , 'C', 'C++', 'C#', 
'Django' ,'Dot-Net',  'Flask' , 'Go-Lang', 'Html', 'Python', 'PHP', 'Pearl', 
'Java', 'Javascript', 'Kotlin',  'Rust', 'R', 'S', 'Sr', 'Tekken 7', 'Tekken 
Tag' ]

lb=Listbox(root)
lb.place_forget()
lb.bind("<Button-3>", CurSelet)
lb.bind("<Right>",  CurSelet)


root.mainloop()

print(Listbox.curselection)

这是搜索栏。如果您将自动完成使用

if (re.match(value, items, re.IGNORECASE)):  

代替IF（re.Search（值，项目，re.ignorecase）））：

仅在searchbar＆amp;自动完成。