/*
* Copyright (C) 2010 The Android Open Source Project
*
* 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.
*/
package com.android.quicksearchbox;
import android.database.DataSetObserver;
import java.util.List;
/**
* Orders corpora by importance.
*/
public interface CorpusRanker {
/**
* Gets a an ordered list of corpora.
*
* @return The most important corpora come first in the list. Callers should not mofify the
* returned list.
*/
List<Corpus> getRankedCorpora();
/**
* Registers an observer that is called when the corpus list changes.
*
* @param observer gets notified when the corpus list changes.
*/
void registerDataSetObserver(DataSetObserver observer);
/**
* Unregisters an observer that has previously been registered with
* {@link #registerDataSetObserver(DataSetObserver)}
*
* @param observer the observer to unregister.
*/
void unregisterDataSetObserver(DataSetObserver observer);
}
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