def testPropertyValues(self):
app = QApplication(sys.argv)
textEdit = QPlainTextEdit()
textEdit.insertPlainText("PySide INdT")
selection = QTextEdit.ExtraSelection()
selection.cursor = textEdit.textCursor()
selection.cursor.setPosition(2)
self.assertEqual(selection.cursor.position(), 2)
class ChatWidget(QWidget):
"""
A chatting widget.
"""
#: A notification (not chat!) message for the user
message = Signal(str)
def __init__(self, parent=None):
QWidget.__init__(self, parent)
self.setLayout(QVBoxLayout(self))
self.text_display = QPlainTextEdit(self)
self.text_display.setReadOnly(True)
self.layout().addWidget(self.text_display)
self.text_input = QLineEdit(self)
self.text_input.returnPressed.connect(self.send_text)
self.layout().addWidget(self.text_input)
QWidget.setTabOrder(self.text_input, self.text_display)
self.setEnabled(False)
self.message.emit('Not connected')
self._connection = None
@property
def connected(self):
"""
``True``, if this chat widget is connected to some server, ``False``
otherwise
"""
return (self._connection and
self._connection.state() == QTcpSocket.ConnectedState)
@property
def connection(self):
"""
The connection used by this widget.
"""
return self._connection
@connection.setter
def connection(self, connection):
self._connection = connection
if not self.connected:
# wait for connection, if the connection isn't available yet
self._connection.connected.connect(self._enable_chat)
else:
self._enable_chat()
# handle errors, disconnects and incoming data
self._connection.error.connect(self._handle_error)
self._connection.disconnected.connect(self._handle_disconnect)
self._connection.readyRead.connect(self._receive_text)
def _enable_chat(self):
"""
Enable the chat widget for chatting.
"""
self.message.emit('connected')
self.setEnabled(True)
# remove all text from the previous connection
self.text_display.clear()
def _handle_disconnect(self):
"""
Handle a disconnect.
"""
self.message.emit('disconnected')
# disable the user interface
self.setEnabled(False)
# and disconnect from all slots and eventually delete the connection
# itself
self._connection.readyRead.disconnect(self._receive_text)
self._connection.deleteLater()
self._connection = None
def _handle_error(self):
self.message.emit(self._connection.errorString())
def _receive_text(self):
text = _stream_for_connection(self.connection).readAll()
self.text_display.insertPlainText('{0}'.format(text))
def send_text(self, text=None):
"""
Send ``text`` over the connection of this widget. Does nothing, if
the widget is not connected.
If ``text`` is ``None`` (the default), use the current input form
the user.
"""
if self.connected:
stream = _stream_for_connection(self.connection)
if not text:
text = self.text_input.text()
self.text_input.clear()
stream << text
class ChatWidget(QWidget):
"""
A chatting widget.
"""
#: A notification (not chat!) message for the user
message = Signal(str)
def __init__(self, parent=None):
QWidget.__init__(self, parent)
self.setLayout(QVBoxLayout(self))
self.text_display = QPlainTextEdit(self)
self.text_display.setReadOnly(True)
self.layout().addWidget(self.text_display)
self.text_input = QLineEdit(self)
self.text_input.returnPressed.connect(self.send_text)
self.layout().addWidget(self.text_input)
QWidget.setTabOrder(self.text_input, self.text_display)
self.setEnabled(False)
self.message.emit('Not connected')
self._connection = None
@property
def connected(self):
"""
``True``, if this chat widget is connected to some server, ``False``
otherwise
"""
return (self._connection
and self._connection.state() == QTcpSocket.ConnectedState)
@property
def connection(self):
"""
The connection used by this widget.
"""
return self._connection
@connection.setter
def connection(self, connection):
self._connection = connection
if not self.connected:
# wait for connection, if the connection isn't available yet
self._connection.connected.connect(self._enable_chat)
else:
self._enable_chat()
# handle errors, disconnects and incoming data
self._connection.error.connect(self._handle_error)
self._connection.disconnected.connect(self._handle_disconnect)
self._connection.readyRead.connect(self._receive_text)
def _enable_chat(self):
"""
Enable the chat widget for chatting.
"""
self.message.emit('connected')
self.setEnabled(True)
# remove all text from the previous connection
self.text_display.clear()
def _handle_disconnect(self):
"""
Handle a disconnect.
"""
self.message.emit('disconnected')
# disable the user interface
self.setEnabled(False)
# and disconnect from all slots and eventually delete the connection
# itself
self._connection.readyRead.disconnect(self._receive_text)
self._connection.deleteLater()
self._connection = None
def _handle_error(self):
self.message.emit(self._connection.errorString())
def _receive_text(self):
text = _stream_for_connection(self.connection).readAll()
self.text_display.insertPlainText('{0}'.format(text))
def send_text(self, text=None):
"""
Send ``text`` over the connection of this widget. Does nothing, if
the widget is not connected.
If ``text`` is ``None`` (the default), use the current input form
the user.
"""
if self.connected:
stream = _stream_for_connection(self.connection)
if not text:
text = self.text_input.text()
self.text_input.clear()
stream << text
