# -*- coding: utf-8 -*-
"""
Created on Mon Sep 23 09:34:24 2024

@author: WANGXIBAO
"""

from PyQt5.QtWidgets import QApplication, QWidget, QPushButton, QLineEdit, QVBoxLayout, QDialog, QDialogButtonBox, QMessageBox

class RenameDialog(QDialog):
    def __init__(self, old_name, parent=None):
        super().__init__(parent)
        self.old_name = old_name
        self.init_ui()

    def init_ui(self):
        layout = QVBoxLayout(self)
        self.lineEdit = QLineEdit(self.old_name)
        layout.addWidget(self.lineEdit)
        self.buttonBox = QDialogButtonBox(QDialogButtonBox.Ok | QDialogButtonBox.Cancel)
        self.buttonBox.accepted.connect(self.accept)
        self.buttonBox.rejected.connect(self.reject)
        layout.addWidget(self.buttonBox)

    def get_new_name(self):
        return self.lineEdit.text()

class MainWindow(QWidget):
    def __init__(self):
        super().__init__()
        self.init_ui()

    def init_ui(self):
        layout = QVBoxLayout(self)
        self.pushButton = QPushButton('Click or Double Click to Rename')
        self.pushButton.setFixedSize(200, 50)
        self.pushButton.clicked.connect(self.rename_button)
        layout.addWidget(self.pushButton)
        self.setLayout(layout)

    def rename_button(self):
        clicked_button = self.sender()
        if clicked_button:
            dialog = RenameDialog(clicked_button.text(), self)
            if dialog.exec_():
                new_name = dialog.get_new_name()
                if new_name:  # 确保新名称不为空
                    clicked_button.setText(new_name)
                else:
                    QMessageBox.warning(self, "Rename Error", "The new name cannot be empty.")

if __name__ == '__main__':
    app = QApplication([])
    window = MainWindow()
    window.show()
    app.exec_()