Use an ordered dict to get LIFO cache sorting on sym selection
parent
9bfc230dde
commit
af9dcf9230
piker/ui
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@ -19,10 +19,11 @@ High level Qt chart widgets.
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"""
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"""
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import time
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import time
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from collections import OrderedDict
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from contextlib import AsyncExitStack
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from typing import Tuple, Dict, Any, Optional, Callable
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from typing import Tuple, Dict, Any, Optional, Callable
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from types import ModuleType
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from types import ModuleType
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from functools import partial
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from functools import partial
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from contextlib import AsyncExitStack
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from PyQt5 import QtCore, QtGui
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from PyQt5 import QtCore, QtGui
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from PyQt5.QtCore import Qt
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from PyQt5.QtCore import Qt
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@ -104,7 +105,7 @@ class ChartSpace(QtGui.QWidget):
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self.vbox.addLayout(self.toolbar_layout)
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self.vbox.addLayout(self.toolbar_layout)
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# self.vbox.addLayout(self.hbox)
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# self.vbox.addLayout(self.hbox)
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self._chart_cache = {}
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self._chart_cache = OrderedDict()
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self.linkedcharts: 'LinkedSplitCharts' = None
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self.linkedcharts: 'LinkedSplitCharts' = None
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self.symbol_label: Optional[QtGui.QLabel] = None
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self.symbol_label: Optional[QtGui.QLabel] = None
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@ -116,6 +117,8 @@ class ChartSpace(QtGui.QWidget):
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linked_charts: 'LinkedSplitCharts', # type: ignore
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linked_charts: 'LinkedSplitCharts', # type: ignore
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) -> None:
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) -> None:
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self._chart_cache[symbol_key] = linked_charts
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self._chart_cache[symbol_key] = linked_charts
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# re-sort list in LIFO order
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self._chart_cache.move_to_end(symbol_key, last=False)
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def get_chart_symbol(
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def get_chart_symbol(
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self,
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self,
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@ -191,7 +194,8 @@ class ChartSpace(QtGui.QWidget):
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)
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)
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self.vbox.addWidget(linkedcharts)
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self.vbox.addWidget(linkedcharts)
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self.set_chart_symbol(fqsn, linkedcharts)
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self.set_chart_symbol(fqsn, linkedcharts)
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# chart is already in memory so just focus it
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# chart is already in memory so just focus it
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if self.linkedcharts:
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if self.linkedcharts:
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