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#!/usr/bin/env python
#======================================================================
# FILE: Gauge.py
# CREATOR: mtearle
#
# SPDX-FileCopyrightText: 2001, Eric Busboom <eric@civicknowledge.com>
# SPDX-FileCopyrightText: 2001, Patrick Lewis <plewis@inetarena.com>
#
# SPDX-License-Identifier: LGPL-2.1-only OR MPL-2.0
#
#
#
#======================================================================

from LibicalWrap import *
from Error import LibicalError
from Component import Component

class Gauge:
    """
    Base class for gauge
    """

    class ConstructorFailedError(LibicalError):
        "Failed to create a Gauge "

    class CloneFailedError(LibicalError):
        "Failed to clone a component given Gauge "

    class CompareFailedError(LibicalError):
        "Failed to compare a component given Gauge "

    def __init__(self,ref=None,sql=None,expand=0):
        if ref != None:
            self._ref = ref
        elif sql != None:
            s = str(sql)
            self._ref = icalgauge_new_from_sql(s,expand)
        else:
            Gauge.ConstructorFailedError("No SQL Specified")

    def __del__(self):
        if self._ref != None:
            icalgauge_free(self._ref)
            self._ref = None

    def ref(self):
        return self._ref

    def compare(self, comp):
        if not isinstance(comp,Component):
            raise Gauge.CompareFailedError("Argument is not a component")

        if comp.ref() == None:
            raise Gauge.CompareFailedError("Argument is not a component")

        return icalgauge_compare(self._ref, comp.ref())