class CodecTab(QScrollArea):
# BUG: codec_frame should have height 210 but has 480.
# WORKAROUND: manually set height to 210 height.
# SEE: https://forum.qt.io/topic/42055/qwidget-height-returns-incorrect-value-in-5-3/7
FRAME_HEIGHT = 210
def __init__(self, parent, context, commands):
super(QWidget, self).__init__(parent)
self._context = context
self._logger = context.logger()
self._commands = commands
self._next_frame_id = 1
self._frames = QSplitter(Qt.Vertical)
self._frames.setChildrenCollapsible(False)
self._frames.setSizePolicy(
QSizePolicy(QSizePolicy.Expanding, QSizePolicy.Expanding))
self._frames.setContentsMargins(0, 0, 0, 0)
self._main_frame = QFrame(self)
self._main_frame_layout = QVBoxLayout()
self._main_frame_layout.addWidget(self._frames)
self._main_frame_layout.addWidget(VSpacer(self))
self._main_frame.setLayout(self._main_frame_layout)
self.newFrame("", "")
self.setVerticalScrollBarPolicy(Qt.ScrollBarAlwaysOn)
self.setWidgetResizable(True)
self.setWidget(self._main_frame)
def newFrame(self,
text,
title,
previous_frame=None,
status=None,
msg=None):
try:
# BUG: Setting complex default values is not possible in python
# WORKAROUND: Set default value to None and set real default later.
if status is None:
status = StatusWidget.DEFAULT
if previous_frame and previous_frame.hasNext():
next_frame = previous_frame.next()
next_frame.setTitle(title)
finished = False
if status == StatusWidget.ERROR:
while not finished:
next_frame.flashStatus(status, msg)
# Display error only for the first frame.
msg = None
finished = not next_frame.hasNext()
next_frame = next_frame.next()
else:
next_frame.setInputText(text, msg is not None
and len(msg) > 0)
next_frame.flashStatus(status, msg)
previous_frame.focusInputText()
else:
new_frame = CodecFrame(self, self._context,
self._next_frame_id, self,
self._commands, previous_frame, text)
self._next_frame_id += 1
if self._frames.count() > 0:
new_frame.flashStatus(status, msg)
new_frame.setTitle(title)
new_frame.setContentsMargins(0, 0, 0, 0)
new_frame.layout().setContentsMargins(0, 0, 0, 0)
self._frames.addWidget(new_frame)
# BUG: QSplitter does not allow frames to be wider than the surrounding area (here: QScrollArea).
# WORKAROUND: Set a fixed size for codec frames and disable handles which prevents users from
# trying to resize the codec frames.
new_frame.setFixedHeight(self.FRAME_HEIGHT)
self._frames.handle(self._frames.count() - 1).setEnabled(False)
if previous_frame:
previous_frame.focusInputText()
else:
new_frame.focusInputText()
except Exception as e:
self._logger.error("Unknown error: {}".format(str(e)))
def removeFrames(self, frame):
if frame:
if frame.previous():
frame.previous().setNext(None)
frames_to_remove = [frame]
while frame.next():
frames_to_remove.append(frame.next())
frame = frame.next()
for frame_to_remove in reversed(frames_to_remove):
frame_to_remove.deleteLater()
def getFocussedFrame(self):
widget = self._frames.focusWidget()
while widget:
if isinstance(widget, CodecFrame):
return widget
widget = widget.parent()
return self._frames.widget(0)
