python - 在treeview tkinter python中搜索和选择项目
问题描述
我想创建search_function
以搜索树视图表中的数据。在我的代码中,我确实需要search_button
在下面的 3 个请求之后单击以选择树视图表中的数据。
from tkinter import *
from tkinter import ttk
GUI = Tk()
GUI.geometry('1920x1080')
tree_view_frame = Frame(GUI)
tree_view_frame.pack()
tree_scroll = Scrollbar(tree_view_frame)
tree_scroll.pack(side = RIGHT, fill = Y)
header = ['Part No.', 'Name', 'Unit', 'Quan', 'Price','Total', 'Initial Total']
hdsize = [60,240,60,60,70,80,80]
aanchor = [W,W,E,E,E,E,E]
global product_table
product_table = ttk.Treeview(tree_view_frame, columns = header, show = 'headings', height = 20, yscrollcommand=tree_scroll.set, selectmode="extended")
def treeview_sort_column(product_table, col, reverse):
l = [(product_table.set(k, col), k) for k in product_table.get_children('')]
l.sort(reverse=reverse)
for index, (val, k) in enumerate(l):
product_table.move(k, '', index)
product_table.heading(col, command=lambda _col=col: treeview_sort_column(product_table, _col, not reverse))
for col in header:
product_table.heading(col, text=col,command=lambda _col=col: treeview_sort_column(product_table, _col, False))
product_table.pack()
tree_scroll.config(command = product_table.yview)
for h,s,a in zip(header, hdsize, aanchor):
product_table.heading(h, text = h)
product_table.column(h,width = s, anchor = a)
Nameget = StringVar()
E_namme = ttk.Entry(GUI,textvariable = Nameget)
E_namme.pack()
def Add_Product(event = None):
product_table.insert('', 'end', value = ('', Nameget.get()))
B_Add_product = ttk.Button(GUI, text = "Add Product", command = Add_Product)
B_Add_product.pack()
def search_function():
query = Nameget.get()
selections = []
for child in product_table.get_children():
if query in product_table.item(child)['values'][1]:
selections.append(child)
product_table.selection_set(selections[0])
product_table.focus(selections[0])
product_table.focus_force()
search_button = ttk.Button(GUI, text = "search_button", width = 15, command = search_function)
search_button.pack()
GUI.mainloop()
在当前代码中,它只能选择第一个结果,而不能自动向下滚动滚动条。
先感谢您。
解决方案
您可以使用see
(确保该项目可见)并循环。
任何数据结构都可以在这里辅助使用queue
或dict
像下面的示例:
(使用一些 OOP 很好)
from tkinter import *
from tkinter import ttk
from collections import defaultdict
GUI = Tk()
GUI.geometry("1920x1080")
tree_view_frame = Frame(GUI)
tree_view_frame.pack()
tree_scroll = Scrollbar(tree_view_frame)
tree_scroll.pack(side=RIGHT, fill=Y)
header = ["Part No.", "Name", "Unit", "Quan", "Price", "Total", "Initial Total"]
hdsize = [60, 240, 60, 60, 70, 80, 80]
aanchor = [W, W, E, E, E, E, E]
global product_table
class ProductMap:
def __init__(self):
self.selections = defaultdict(list)
self.last_lookup = ""
def treeview_sort_column(self, product_table, col, reverse):
l = [(product_table.set(k, col), k) for k in product_table.get_children("")]
l.sort(reverse=reverse)
for index, (val, k) in enumerate(l):
product_table.move(k, "", index)
product_table.heading(
col,
command=lambda _col=col: product_map.treeview_sort_column(
product_table, _col, not reverse
),
)
def search_function(self):
query = Nameget.get()
if not query:
return
children = product_table.get_children()
for child in children:
curr = product_table.item(child)["values"][1]
if query in curr and child not in self.selections[query]:
self.selections[query].append(child)
product_table.selection_set(child)
product_table.focus(child)
product_table.see(child)
self.last_lookup = query
return
elif query != self.last_lookup:
self.selections = defaultdict(list)
def Add_Product(self, event=None):
product_table.insert("", "end", value=("", Nameget.get()))
product_map = ProductMap()
product_table = ttk.Treeview(
tree_view_frame,
columns=header,
show="headings",
height=20,
yscrollcommand=tree_scroll.set,
selectmode="extended",
)
for col in header:
product_table.heading(
col,
text=col,
command=lambda _col=col: product_map.treeview_sort_column(
product_table, _col, False
),
)
product_table.pack()
tree_scroll.config(command=product_table.yview)
for h, s, a in zip(header, hdsize, aanchor):
product_table.heading(h, text=h)
product_table.column(h, width=s, anchor=a)
Nameget = StringVar()
E_namme = ttk.Entry(GUI, textvariable=Nameget)
E_namme.pack()
B_Add_product = ttk.Button(GUI, text="Add Product", command=product_map.Add_Product)
B_Add_product.pack()
search_button = ttk.Button(
GUI, text="search_button", width=15, command=product_map.search_function
)
search_button.pack()
GUI.mainloop()
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