PyBitmessage/src/bitmessageqt/settingsmixin.py

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#!/usr/bin/python2.7
"""
src/settingsmixin.py
====================
"""
from PyQt4 import QtCore, QtGui
class SettingsMixin(object):
"""Mixin for adding geometry and state saving between restarts."""
def warnIfNoObjectName(self):
"""
Handle objects which don't have a name. Currently it ignores them. Objects without a name can't have their
state/geometry saved as they don't have an identifier.
"""
if self.objectName() == "":
# .. todo:: logger
pass
def writeState(self, source):
"""Save object state (e.g. relative position of a splitter)"""
self.warnIfNoObjectName()
settings = QtCore.QSettings()
settings.beginGroup(self.objectName())
settings.setValue("state", source.saveState())
settings.endGroup()
def writeGeometry(self, source):
"""Save object geometry (e.g. window size and position)"""
self.warnIfNoObjectName()
settings = QtCore.QSettings()
settings.beginGroup(self.objectName())
settings.setValue("geometry", source.saveGeometry())
settings.endGroup()
def readGeometry(self, target):
"""Load object geometry"""
self.warnIfNoObjectName()
settings = QtCore.QSettings()
try:
geom = settings.value("/".join([str(self.objectName()), "geometry"]))
target.restoreGeometry(geom.toByteArray() if hasattr(geom, 'toByteArray') else geom)
except Exception:
pass
def readState(self, target):
"""Load object state"""
self.warnIfNoObjectName()
settings = QtCore.QSettings()
try:
state = settings.value("/".join([str(self.objectName()), "state"]))
target.restoreState(state.toByteArray() if hasattr(state, 'toByteArray') else state)
except Exception:
pass
class SMainWindow(QtGui.QMainWindow, SettingsMixin):
"""Main window with Settings functionality."""
def loadSettings(self):
"""Load main window settings."""
self.readGeometry(self)
self.readState(self)
def saveSettings(self):
"""Save main window settings"""
self.writeState(self)
self.writeGeometry(self)
class STableWidget(QtGui.QTableWidget, SettingsMixin):
"""Table widget with Settings functionality"""
# pylint: disable=too-many-ancestors
def loadSettings(self):
"""Load table settings."""
self.readState(self.horizontalHeader())
def saveSettings(self):
"""Save table settings."""
self.writeState(self.horizontalHeader())
class SSplitter(QtGui.QSplitter, SettingsMixin):
"""Splitter with Settings functionality."""
def loadSettings(self):
"""Load splitter settings"""
self.readState(self)
def saveSettings(self):
"""Save splitter settings."""
self.writeState(self)
class STreeWidget(QtGui.QTreeWidget, SettingsMixin):
"""Tree widget with settings functionality."""
# pylint: disable=too-many-ancestors
def loadSettings(self):
"""Load tree settings."""
# recurse children
# self.readState(self)
pass
def saveSettings(self):
"""Save tree settings"""
# recurse children
# self.writeState(self)
pass