/*
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* Copyright (C) 2007 The Android Open Source Project
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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 android.widget;
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import android.database.Cursor;
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/**
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* This class can be used by external clients of CursorAdapter and
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* CursorTreeAdapter to define how the content of the adapter should be
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* filtered.
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*
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* @see #runQuery(CharSequence)
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*/
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public interface FilterQueryProvider {
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/**
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* Runs a query with the specified constraint. This query is requested
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* by the filter attached to this adapter.
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*
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* Contract: when constraint is null or empty, the original results,
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* prior to any filtering, must be returned.
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*
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* @param constraint the constraint with which the query must
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* be filtered
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*
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* @return a Cursor representing the results of the new query
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*/
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Cursor runQuery(CharSequence constraint);
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}
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