cmautobuy/client/src/settings_ui_event.py

"""设置页的事件绑定。

本文件把界面操作转换为轻量信号，不直接执行 ADB、SQLite 或硬件信息读取。
后续应用服务应在后台线程处理阻塞操作，再通过页面更新方法返回结果。
"""

from PyQt5.QtCore import QObject, pyqtSignal, pyqtSlot


class SettingsPageEventBinder(QObject):
    """绑定设备管理控件，并向应用层发出稳定事件。"""

    searchRequested = pyqtSignal()
    connectRequested = pyqtSignal(str)
    saveRequested = pyqtSignal(str, str)
    deleteRequested = pyqtSignal(str)

    def __init__(self, page):
        super().__init__(page)
        self._page = page
        self._busy = False

        page.searchButton.clicked.connect(self._request_search)
        page.connectButton.clicked.connect(self._request_connect)
        page.saveButton.clicked.connect(self._request_save)
        page.deleteButton.clicked.connect(self._request_delete)
        page.addressInput.textChanged.connect(self._sync_button_state)
        page.deviceTableModel.checkedDeviceChanged.connect(self._sync_button_state)
        self._sync_button_state()

    @pyqtSlot()
    def _request_search(self) -> None:
        if self._busy:
            return
        self.searchRequested.emit()

    @pyqtSlot()
    def _request_connect(self) -> None:
        if self._busy:
            return

        address = self._page.addressInput.text().strip()
        if not address:
            self._page.deviceStatusLabel.setText(
                "连接失败：请先填写无线调试地址，例如 192.168.0.173:5555"
            )
            self._page.addressInput.setFocus()
            return
        self.connectRequested.emit(address)

    @pyqtSlot()
    def _request_save(self) -> None:
        if self._busy:
            return

        serial = self._page.deviceTableModel.checked_serial
        if not serial:
            self._page.deviceStatusLabel.setText("保存失败：请先勾选一台已连接设备")
            self._page.deviceTable.setFocus()
            return

        device_name = self._page.deviceNameInput.text().strip()
        self.saveRequested.emit(device_name, serial)

    @pyqtSlot()
    def _request_delete(self) -> None:
        if self._busy:
            return

        serial = self._page.deviceTableModel.checked_serial
        if not serial:
            self._page.deviceStatusLabel.setText("删除失败：请先勾选一台设备")
            self._page.deviceTable.setFocus()
            return
        self.deleteRequested.emit(serial)

    @pyqtSlot()
    def _sync_button_state(self, *_args) -> None:
        serial = self._page.deviceTableModel.checked_serial
        has_address = bool(self._page.addressInput.text().strip())
        self._page.searchButton.setEnabled(not self._busy)
        self._page.connectButton.setEnabled(not self._busy and has_address)
        self._page.saveButton.setEnabled(not self._busy and bool(serial))
        self._page.deleteButton.setEnabled(not self._busy and bool(serial))

    def set_busy(self, busy: bool, message: str = "") -> None:
        """切换界面忙碌状态，防止用户重复提交设备命令。"""

        self._busy = busy
        self._sync_button_state()
        if message:
            self._page.deviceStatusLabel.setText(message)