/*
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* Copyright 2011 Yuri Kanivets
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.codbking.widget.adapters;
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import android.database.DataSetObserver;
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import android.view.View;
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import android.view.ViewGroup;
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/**
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* Wheel items adapter interface
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*/
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public interface WheelViewAdapter {
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/**
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* Gets items count
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* @return the count of wheel2 items
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*/
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public int getItemsCount();
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/**
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* Get a View that displays the data at the specified position in the data set
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*
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* @param index the item index
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* @param convertView the old view to reuse if possible
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* @param parent the parent that this view will eventually be attached to
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* @return the wheel2 item View
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*/
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public View getItem(int index, View convertView, ViewGroup parent);
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/**
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* Get a View that displays an empty wheel2 item placed before the first or after
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* the last wheel2 item.
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*
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* @param convertView the old view to reuse if possible
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* @param parent the parent that this view will eventually be attached to
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* @return the empty item View
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*/
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public View getEmptyItem(View convertView, ViewGroup parent);
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/**
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* Register an observer that is called when changes happen to the data used by this adapter.
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* @param observer the observer to be registered
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*/
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public void registerDataSetObserver(DataSetObserver observer);
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/**
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* Unregister an observer that has previously been registered
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* @param observer the observer to be unregistered
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*/
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void unregisterDataSetObserver(DataSetObserver observer);
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}
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