Tkinter 框架间数据传递：一种高效的解决方案

import tkinter as tk
from tkinter import ttk
import customtkinter as ctk

# 模拟数据库查询
def query_database(query):
    # 实际应用中替换为真实的数据库查询代码
    results = [
        {'Name': 'Company A', 'Industry': 'Tech', 'Postcode': '10001', 'Status': 'Active'},
        {'Name': 'Company B', 'Industry': 'Finance', 'Postcode': '20002', 'Status': 'Inactive'},
        {'Name': 'Company C', 'Industry': 'Healthcare', 'Postcode': '30003', 'Status': 'Active'},
    ]
    filtered_results = [r for r in results if query.lower() in r['Name'].lower()]
    return filtered_results

# 主应用窗口
class App(ctk.CTk):
    def __init__(self):
        ctk.CTk.__init__(self)
        self.title("CRM App")
        self.geometry("800x600")

        self.shared_data = {}  # 用于存储共享数据

        container = tk.Frame(self)
        container.pack(side="top", fill="both", expand=True)
        container.grid_rowconfigure(0, weight=1)
        container.grid_columnconfigure(0, weight=1)

        self.frames = {}
        for F in (SearchFrame, SearchResultsFrame):
            frame = F(container, self)
            self.frames[F] = frame
            frame.grid(row=0, column=0, sticky="nsew")

        self.show_frame(SearchFrame)

    def show_frame(self, cont):
        frame = self.frames[cont]
        frame.tkraise()

    def update_search_results(self, query):
        # 获取 SearchResultsFrame 实例
        search_results_frame = self.frames[SearchResultsFrame]
        # 调用 SearchResultsFrame 的 populate_page 方法，传递查询结果
        search_results_frame.populate_page(query)

# 搜索窗口
class SearchFrame(ctk.CTkFrame):
    def __init__(self, parent, controller):
        ctk.CTkFrame.__init__(self, parent)
        self.controller = controller
        self.title_label = ctk.CTkLabel(self, text="Search")
        self.title_label.pack()

        self.search_bar = ctk.CTkEntry(self)
        self.search_bar.pack()

        self.search_btn = ctk.CTkButton(self, text="Search", command=self.perform_search)
        self.search_btn.pack()

    def perform_search(self):
        query = self.search_bar.get()
        # 调用主应用的 update_search_results 方法
        self.controller.update_search_results(query)
        self.controller.show_frame(SearchResultsFrame)

# 搜索结果窗口
class SearchResultsFrame(ctk.CTkFrame):
    def __init__(self, parent, controller):
        ctk.CTkFrame.__init__(self, parent)
        self.controller = controller
        self.title_label = ctk.CTkLabel(self, text="Search Results")
        self.title_label.pack()

        self.companies_title = ctk.CTkLabel(self, text='Companies:')
        self.companies_title.pack()

        self.searchResults_columns = [
            'Name',
            'Industry',
            'Postcode',
            'Status'
        ]

        self.searchResults_tree = ttk.Treeview(self, columns=self.searchResults_columns, show='headings')
        self.treeFormat(self.searchResults_columns,self.searchResults_tree)
        self.searchResults_tree.pack(expand=True, fill='both')

        self.home_btn = ctk.CTkButton(self, text="Home", command=lambda: controller.show_frame(SearchFrame))
        self.home_btn.pack()

    def populate_page(self, query):
        # 清空 Treeview
        for item in self.searchResults_tree.get_children():
            self.searchResults_tree.delete(item)

        # 模拟数据库查询
        results = query_database(query)

        # 将查询结果插入 Treeview
        for row in results:
            self.searchResults_tree.insert("", "end", values=(row['Name'], row['Industry'], row['Postcode'], row['Status']))

    def treeFormat(self, columns, tree):
        for col in columns:
            tree.heading(col, text=col)
            tree.column(col, width=100)  # 设置列宽

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