# Copyright (C) 2012 Vaadin Ltd. 
# Copyright (C) 2012 Richard Lincoln
# 
# Licensed under the Apache License, Version 2.0 (the "License"); 
# you may not use this file except in compliance with the License. 
# You may obtain a copy of the License at 
# 
#     http://www.apache.org/licenses/LICENSE-2.0 
# 
# Unless required by applicable law or agreed to in writing, software 
# distributed under the License is distributed on an "AS IS" BASIS, 
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
# See the License for the specific language governing permissions and 
# limitations under the License.

"""Criterion that accepts all drops anywhere on the component."""

from muntjac.event.dd.acceptcriteria.client_side_criterion import \
    ClientSideCriterion


class AcceptAll(ClientSideCriterion):
    """Criterion that accepts all drops anywhere on the component.

    Note! Class is singleton, use L{get} method to get the instance.
    """

    _singleton = None

    def __init__(self):
        pass

    @classmethod
    def get(cls):
        return cls._singleton


    def accept(self, dragEvent):
        return True


    def getIdentifier(self):
        return 'com.vaadin.event.dd.acceptcriteria.AcceptAll'

AcceptAll._singleton = AcceptAll()
