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settingmanager.py
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settingmanager.py
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#-----------------------------------------------------------
#
# QGIS setting manager is a python module to easily manage read/write
# settings and set/get corresponding widgets.
#
# Copyright : (C) 2013 Denis Rouzaud
# Email : denis.rouzaud@gmail.com
#
#-----------------------------------------------------------
#
# licensed under the terms of GNU GPL 2
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this progsram; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
#
#---------------------------------------------------------------------
from types import *
# to print debug info
Debug = False
# possible types
valueTypes = ("string", "double", "integer", "bool", "color", "stringlist")
class SettingManager():
def __init__(self, pluginName):
self.pluginName = pluginName
self.settings = []
def addSetting(self, name, settingType, scope, defaultValue, options={}):
if self.setting(name) is not None:
raise NameError("%s already exist in settings." % name)
if settingType.lower() not in valueTypes:
raise NameError("Wrong type %s" % settingType)
if scope.lower() not in ("global", "project"):
raise NameError("%s is not a valid scope. Must be project or global." % scope)
SettingClass = globals()[settingType[0].upper() + settingType[1:].lower()]
setting = SettingClass(self.pluginName, name, scope, defaultValue, options)
self.settings.append(setting)
def setting(self, name):
for setting in self.settings:
if setting.name == name:
return setting
return None
def value(self, settingName):
setting = self.setting(settingName)
if setting is None:
raise NameError('%s has no setting %s' % (self.pluginName, settingName))
return setting.getValue()
def setValue(self, settingName, value):
setting = self.setting(settingName)
if setting is None:
raise NameError('%s has no setting %s' % (self.pluginName, settingName))
setting.setValue(value)