| /* |
| * 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 java.util.HashSet; |
| import java.util.Set; |
| |
| /** |
| * Promotes shortcuts and suggestions from a single corpus. |
| */ |
| public class SingleCorpusPromoter implements Promoter { |
| |
| private final Corpus mCorpus; |
| |
| private final int mMaxShortcuts; |
| |
| private final Set<String> mAllowedSources; |
| |
| public SingleCorpusPromoter(Corpus corpus, int maxShortcuts) { |
| mCorpus = corpus; |
| mMaxShortcuts = maxShortcuts; |
| mAllowedSources = new HashSet<String>(); |
| for (Source source : corpus.getSources()) { |
| mAllowedSources.add(source.getName()); |
| } |
| } |
| |
| public void pickPromoted(Suggestions suggestions, int maxPromoted, |
| ListSuggestionCursor promoted) { |
| // Add shortcuts |
| SuggestionCursor shortcuts = suggestions.getShortcuts(); |
| promoteUntilFull(shortcuts, mMaxShortcuts, promoted); |
| // Add suggestions |
| CorpusResult corpusResult = suggestions.getCorpusResult(mCorpus); |
| promoteUntilFull(corpusResult, maxPromoted, promoted); |
| } |
| |
| private void promoteUntilFull(SuggestionCursor c, int maxSize, ListSuggestionCursor promoted) { |
| if (c == null) return; |
| int count = c.getCount(); |
| for (int i = 0; i < count && promoted.getCount() < maxSize; i++) { |
| c.moveTo(i); |
| if (accept(c)) { |
| promoted.add(new SuggestionPosition(c, i)); |
| } |
| } |
| } |
| |
| protected boolean accept(Suggestion s) { |
| return mAllowedSources.contains(s.getSuggestionSource().getName()); |
| } |
| |
| } |