class FrequencyDialog(QDialog, BaseUI):
"""
A dialog which allows the sampling frequency to be entered.
"""
select_text = "Select item"
current_selected = None
def __init__(self):
self.frequency: float = None
self.settings = Settings()
super(FrequencyDialog, self).__init__()
def setup_ui(self) -> None:
uic.loadUi(resources.get("layout:dialog_frequency.ui"), self)
self.edit_freq.textChanged.connect(self.on_freq_changed)
self.btn_use_recent.clicked.connect(self.use_recent_freq)
self.setup_combo()
asyncio.ensure_future(self.coro_check_args())
def run_and_get(self) -> float:
self.exec()
self.settings.add_recent_freq(self.frequency)
return self.frequency
def setup_combo(self):
values = self.settings.get_recent_freq()
if values:
self.combo_recent.addItems([float_to_str(f) for f in values])
else:
self.disable_recent_freq()
async def coro_check_args(self):
"""
Checks whether the frequency has been set in the commandline arguments and, if so, uses it.
"""
await asyncio.sleep(0.4)
freq: float = args.args_freq()
if freq:
self.frequency = freq
self.accept()
def combo_text(self, freq):
return f"{freq} Hz"
def use_recent_freq(self):
self.frequency = float_or_none(self.combo_recent.currentText())
self.accept()
def on_freq_changed(self, value):
self.frequency = float_or_none(value)
self.disable_recent_freq()
def disable_recent_freq(self):
"""
Disables the UI for selecting a recent frequency, since it may cause users to erroneously
use a recent frequency instead of the frequency typed into the GUI.
"""
self.combo_recent.setDisabled(True)
self.btn_use_recent.setDisabled(True)
class FrequencyDialog(QDialog, BaseUI):
"""
A dialog which allows the sampling frequency to be entered.
"""
select_text = "Select item"
current_selected = None
def __init__(self):
self.frequency: float = None
self.buttonBox: QDialogButtonBox = None
self.settings = Settings()
super(FrequencyDialog, self).__init__()
self.use_component = UseShortcutComponent(self, self.use_recent_freq)
def setup_ui(self) -> None:
uic.loadUi(resources.get("layout:dialog_frequency.ui"), self)
self.edit_freq.textChanged.connect(self.on_freq_changed)
self.btn_use_recent.clicked.connect(self.use_recent_freq)
self.setup_combo()
self.set_ok_enabled(False)
asyncio.ensure_future(self.coro_check_args())
def run_and_get(self) -> float:
"""
Shows the dialog and returns the result.
:return: the frequency entered by the user
"""
self.exec()
self.settings.add_recent_freq(self.frequency)
return self.frequency
def setup_combo(self):
values = self.settings.get_recent_freq()
if values:
self.combo_recent.addItems([float_to_str(f) for f in values])
else:
self.enable_recent_freq(False)
async def coro_check_args(self):
"""
Checks whether the frequency has been set in the commandline arguments and, if so, uses it.
"""
await asyncio.sleep(0.4)
freq: float = args.args_freq()
if freq:
self.frequency = freq
self.accept()
def combo_text(self, freq):
return f"{freq} Hz"
def use_recent_freq(self):
self.frequency = float_or_none(self.combo_recent.currentText())
self.accept()
def on_freq_changed(self, value):
self.frequency = float_or_none(value)
valid_freq = self.frequency is not None and self.frequency > 0
self.enable_recent_freq(not valid_freq)
self.set_ok_enabled(valid_freq)
def enable_recent_freq(self, enable: bool) -> None:
"""
Disables the UI for selecting a recent frequency, since it may cause users to erroneously
use a recent frequency instead of the frequency typed into the GUI.
"""
self.combo_recent.setEnabled(enable)
self.btn_use_recent.setEnabled(enable)
def set_ok_enabled(self, enabled: bool) -> None:
"""
Sets the "ok" button in the dialog as enabled or disabled.
:param enabled: whether to set the button as enabled, not disabled
"""
self.buttonBox.button(QDialogButtonBox.Ok).setEnabled(enabled)
