import sys
from PyQt5.Qt import *
class Window(QWidget):
def __init__(self):
super().__init__()
self.open_save_file_flags = None
self.setup_ui()
def setup_ui(self):
self.setWindowTitle("[*]文本编辑器")
self.resize(600, 500)
self.label = QLabel(self)
self.label.resize(self.width(), 30)
self.label.setStyleSheet("background-color:cyan")
self.push_button_open = QPushButton(self)
self.push_button_open.setText("show打开")
self.push_button_open.move(30, 50)
self.push_button_get_open_file = QPushButton(self)
self.push_button_get_open_file.setText("getOpenFile打开")
self.push_button_get_open_file.move(130, 50)
self.push_button_save = QPushButton(self)
self.push_button_save.setText("show保存")
self.push_button_save.move(250, 50)
self.push_button_get_save_file = QPushButton(self)
self.push_button_get_save_file.setText("getSaveFile保存")
self.push_button_get_save_file.move(350, 50)
self.text_edit = QTextEdit(self)
self.text_edit.setVerticalScrollBarPolicy(Qt.ScrollBarAlwaysOn)
self.text_edit.resize(self.width() - 6, 397)
self.text_edit.move(3, 100)
self.push_button_activities()
def push_button_activities(self):
def push_button_open_clicked():
self.open_save_file_flags = 1
self.dialogue_func()
self.file_dialogue.show()
self.dialogue_activities()
self.push_button_open.clicked.connect(push_button_open_clicked)
def push_button_get_open_file_clicked():
self.file_result = QFileDialog.getOpenFileName(self, "文件选择", "./", "文本文件(*.txt)")
if self.file_result[0] != "":
self.label.setText(f"打开文件：{self.file_result}")
self.file_selected_path = self.file_result[0]
self.file_name = self.file_selected_path.split("/")[-1]
self.open_file()
else:
self.label.setText(f"打开文件：未选择文件")
self.push_button_get_open_file.clicked.connect(push_button_get_open_file_clicked)
def push_button_save_clicked():
self.open_save_file_flags = 2
self.dialogue_func()
self.file_dialogue.show()
self.dialogue_activities()
self.push_button_save.clicked.connect(push_button_save_clicked)
def push_button_get_save_file_clicked():
self.file_result = QFileDialog.getSaveFileName(self, "文件选择", "./", "文本文件(*.txt)")
if self.file_result[0] != "":
self.label.setText(f"保存文件：{self.file_result}")
self.file_selected_path = self.file_result[0]
self.file_name = self.file_selected_path.split("/")[-1]
self.save_file()
else:
self.label.setText(f"打开文件：未选择文件")
self.push_button_get_save_file.clicked.connect(push_button_get_save_file_clicked)
def dialogue_func(self):
self.file_dialogue = QFileDialog(self)
if self.open_save_file_flags == 1:
self.file_dialogue.setAcceptMode(QFileDialog.AcceptOpen)
self.file_dialogue.setFileMode(QFileDialog.ExistingFile)
elif self.open_save_file_flags == 2:
self.file_dialogue.setAcceptMode(QFileDialog.AcceptSave)
self.file_dialogue.setWindowTitle("文件选择")
self.file_dialogue.setWindowModality(Qt.WindowModal)
self.file_dialogue.setDirectory(QDir("./"))
self.file_dialogue.setNameFilter("文本文件(*.txt)")
def dialogue_activities(self):
self.file_dialogue.accepted.connect(lambda: self.label.setText(
f"接受 结果：{self.file_dialogue.result()} 最终文件：{self.file_dialogue.selectedFiles()}"))
self.file_dialogue.rejected.connect(lambda: self.label.setText(
f"拒绝 结果：{self.file_dialogue.result()} 当前文件：{self.file_dialogue.selectedFiles()}"))
def current_changed(file):
self.label.setText(f"当前文件：{file}")
self.file_dialogue.currentChanged.connect(current_changed)
def file_selected_exec(file):
self.file_selected_path = file
self.file_name = self.file_selected_path.split("/")[-1]
if self.open_save_file_flags == 1:
self.open_file()
self.open_save_file_flags = None
elif self.open_save_file_flags == 2:
self.save_file()
self.open_save_file_flags = None
self.file_dialogue.fileSelected.connect(file_selected_exec)
def open_file(self):
self.open_file_handle = open(self.file_selected_path, mode="r", encoding="utf-8")
self.setWindowTitle(f"文本编辑器-[*]{self.file_name}")
self.text_edit.setPlainText(self.open_file_handle.read())
self.setWindowModified(False)
self.text_edit.textChanged.connect(lambda: self.setWindowModified(True))
self.open_file_handle.close()
def save_file(self):
self.open_for_write_file_handle = open(self.file_selected_path, mode="w", encoding="utf-8")
self.setWindowTitle(f"文本编辑器-[*]{self.file_name}")
self.open_for_write_file_handle.write(self.text_edit.toPlainText())
self.setWindowModified(False)
self.open_for_write_file_handle.close()
if __name__ == '__main__':
app = QApplication(sys.argv)
window = Window()
window.show()
sys.exit(app.exec_())
