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gui: better state error handling
Remains limited by issue pyqtgraph/pyqtgraph#204
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commit
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@ -1,10 +1,14 @@
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import asyncio
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from collections import OrderedDict
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import logging
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from artiq.tools import TaskObject
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from artiq.protocols import pyon
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logger = logging.getLogger(__name__)
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# support Qt CamelCase naming scheme for save/restore state
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def _save_state(obj):
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method = getattr(obj, "save_state", None)
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@ -38,6 +42,8 @@ class StateManager(TaskObject):
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try:
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data = pyon.load_file(self.filename)
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except FileNotFoundError:
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logger.info("State database '%s' not found, using defaults",
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self.filename)
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return
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# The state of one object may depend on the state of another,
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# e.g. the display state may create docks that are referenced in
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@ -47,10 +53,20 @@ class StateManager(TaskObject):
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for name, obj in reversed(list(self.stateful_objects.items())):
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state = data.get(name, None)
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if state is not None:
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_restore_state(obj, state)
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try:
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_restore_state(obj, state)
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except:
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logger.warning("Failed to restore state for object '%s'",
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name, exc_info=True)
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def save(self):
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data = {k: _save_state(v) for k, v in self.stateful_objects.items()}
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data = dict()
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for k, v in self.stateful_objects.items():
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try:
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data[k] = _save_state(v)
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except:
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logger.warning("Failed to save state for object '%s'", k,
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exc_info=True)
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pyon.store_file(self.filename, data)
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@asyncio.coroutine
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