利用tkinter创建一个Treeview,实现表格自动插入数据并在tree中自动编号排序,同时实现双击某一行后,在其下方创建一行空行,并使得该行原下方的所有行依次下降一行,并且所有行均有顺序编号
时间: 2024-03-27 14:38:33 浏览: 57
好的,我会尽力回答你的问题。首先,我们需要导入`tkinter`和`ttk`模块,以及一些辅助的模块:
```python
import tkinter as tk
from tkinter import ttk
from collections import defaultdict
```
然后,我们可以创建一个`Treeview`并添加列名:
```python
class Application(tk.Frame):
def __init__(self, master=None):
super().__init__(master)
self.master = master
self.pack()
# 创建 Treeview
self.tree = ttk.Treeview(self, columns=["#0", "col1", "col2"], show="headings")
self.tree.pack()
# 添加列名
self.tree.heading("#0", text="编号")
self.tree.heading("col1", text="列1")
self.tree.heading("col2", text="列2")
```
接下来,我们需要实现一个函数来自动插入数据并排序。我们可以利用`defaultdict`来记录每个编号对应的行,然后按照编号排序并插入数据:
```python
class Application(tk.Frame):
def __init__(self, master=None):
...
self.data = defaultdict(dict) # 用于记录每个编号对应的行
def insert_data(self, col1, col2):
# 计算新的编号
new_id = str(len(self.data) + 1)
# 在 data 中添加该行数据
self.data[new_id]["col1"] = col1
self.data[new_id]["col2"] = col2
# 根据编号排序
sorted_ids = sorted(self.data.keys(), key=lambda x: int(x))
self.tree.delete(*self.tree.get_children()) # 删除所有行
for i, id in enumerate(sorted_ids):
self.tree.insert("", "end", values=[id, self.data[id]["col1"], self.data[id]["col2"]]) # 插入新行
```
最后,我们需要实现一个函数来处理双击某一行后,在其下方创建一行空行,并使得该行原下方的所有行依次下降一行。我们可以利用`Treeview`的`insert`方法来插入新行,并且在插入前需要更新所有行的编号:
```python
class Application(tk.Frame):
def __init__(self, master=None):
...
self.tree.bind("<Double-1>", self.add_row)
def add_row(self, event):
# 获取当前选中行的编号
current_id = self.tree.item(self.tree.selection()[0])["values"][0]
# 在该行下方插入新行
new_id = str(len(self.data) + 1)
self.tree.insert("", self.tree.index(self.tree.selection()[0]) + 1, values=[new_id, "", ""])
# 更新编号
sorted_ids = sorted(self.data.keys(), key=lambda x: int(x))
for i, id in enumerate(sorted_ids):
self.data[id]["col1"] = self.tree.item(self.tree.get_children()[i])["values"][1]
self.data[id]["col2"] = self.tree.item(self.tree.get_children()[i])["values"][2]
self.tree.item(self.tree.get_children()[i], values=[id, self.data[id]["col1"], self.data[id]["col2"]])
```
完整代码如下:
```python
import tkinter as tk
from tkinter import ttk
from collections import defaultdict
class Application(tk.Frame):
def __init__(self, master=None):
super().__init__(master)
self.master = master
self.pack()
# 创建 Treeview
self.tree = ttk.Treeview(self, columns=["#0", "col1", "col2"], show="headings")
self.tree.pack()
# 添加列名
self.tree.heading("#0", text="编号")
self.tree.heading("col1", text="列1")
self.tree.heading("col2", text="列2")
# 绑定双击事件
self.tree.bind("<Double-1>", self.add_row)
self.data = defaultdict(dict) # 用于记录每个编号对应的行
def insert_data(self, col1, col2):
# 计算新的编号
new_id = str(len(self.data) + 1)
# 在 data 中添加该行数据
self.data[new_id]["col1"] = col1
self.data[new_id]["col2"] = col2
# 根据编号排序
sorted_ids = sorted(self.data.keys(), key=lambda x: int(x))
self.tree.delete(*self.tree.get_children()) # 删除所有行
for i, id in enumerate(sorted_ids):
self.tree.insert("", "end", values=[id, self.data[id]["col1"], self.data[id]["col2"]]) # 插入新行
def add_row(self, event):
# 获取当前选中行的编号
current_id = self.tree.item(self.tree.selection()[0])["values"][0]
# 在该行下方插入新行
new_id = str(len(self.data) + 1)
self.tree.insert("", self.tree.index(self.tree.selection()[0]) + 1, values=[new_id, "", ""])
# 更新编号
sorted_ids = sorted(self.data.keys(), key=lambda x: int(x))
for i, id in enumerate(sorted_ids):
self.data[id]["col1"] = self.tree.item(self.tree.get_children()[i])["values"][1]
self.data[id]["col2"] = self.tree.item(self.tree.get_children()[i])["values"][2]
self.tree.item(self.tree.get_children()[i], values=[id, self.data[id]["col1"], self.data[id]["col2"]])
root = tk.Tk()
app = Application(master=root)
app.insert_data("A", "B")
app.insert_data("C", "D")
app.mainloop()
```
希望对你有所帮助!
阅读全文