| /* |
| * Copyright (C) 2009 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.ui; |
| |
| import com.android.quicksearchbox.Corpora; |
| import com.android.quicksearchbox.Corpus; |
| import com.android.quicksearchbox.R; |
| |
| import android.content.Context; |
| import android.database.DataSetObserver; |
| import android.graphics.drawable.Drawable; |
| import android.util.Log; |
| import android.view.LayoutInflater; |
| import android.view.View; |
| import android.view.ViewGroup; |
| import android.widget.BaseAdapter; |
| |
| import java.util.ArrayList; |
| import java.util.Collections; |
| import java.util.Comparator; |
| import java.util.List; |
| |
| /** |
| * Adapter for showing a list of sources in the source selection activity. |
| */ |
| public class CorporaAdapter extends BaseAdapter { |
| |
| private static final String TAG = "CorporaAdapter"; |
| private static final boolean DBG = false; |
| |
| private final Context mContext; |
| |
| private final Corpora mCorpora; |
| |
| private final int mCorpusViewRes; |
| |
| private final DataSetObserver mCorporaObserver = new CorporaObserver(); |
| |
| private List<Corpus> mSortedCorpora; |
| |
| private String mCurrentCorpusName; |
| |
| public CorporaAdapter(Context context, Corpora corpora, int corpusViewRes) { |
| mContext = context; |
| mCorpora = corpora; |
| mCorpusViewRes = corpusViewRes; |
| mCorpora.registerDataSetObserver(mCorporaObserver); |
| updateCorpora(); |
| } |
| |
| public void setCurrentCorpus(Corpus corpus) { |
| mCurrentCorpusName = corpus == null ? null : corpus.getName(); |
| notifyDataSetChanged(); |
| } |
| |
| private void updateCorpora() { |
| List<Corpus> enabledCorpora = mCorpora.getEnabledCorpora(); |
| ArrayList<Corpus> sorted = new ArrayList<Corpus>(enabledCorpora.size()); |
| for (Corpus corpus : enabledCorpora) { |
| if (!corpus.isCorpusHidden()) { |
| sorted.add(corpus); |
| } |
| } |
| Collections.sort(sorted, new CorpusComparator()); |
| mSortedCorpora = sorted; |
| notifyDataSetChanged(); |
| } |
| |
| private static class CorpusComparator implements Comparator<Corpus> { |
| public int compare(Corpus corpus1, Corpus corpus2) { |
| // Comparing a corpus against itself |
| if (corpus1 == corpus2) return 0; |
| // Web always comes first |
| if (corpus1.isWebCorpus()) return -1; |
| if (corpus2.isWebCorpus()) return 1; |
| // Alphabetically by name |
| return corpus1.getLabel().toString().compareTo(corpus2.getLabel().toString()); |
| } |
| } |
| |
| public void close() { |
| mCorpora.unregisterDataSetObserver(mCorporaObserver); |
| } |
| |
| public int getCount() { |
| return 1 + (mSortedCorpora == null ? 0 : mSortedCorpora.size()); |
| } |
| |
| public Corpus getItem(int position) { |
| if (position == 0) { |
| return null; |
| } else { |
| return mSortedCorpora.get(position - 1); |
| } |
| } |
| |
| public long getItemId(int position) { |
| return position; |
| } |
| |
| /** |
| * Gets the position of the given corpus. |
| */ |
| public int getCorpusPosition(Corpus corpus) { |
| if (corpus == null) { |
| return 0; |
| } |
| int count = getCount(); |
| for (int i = 0; i < count; i++) { |
| if (corpus.equals(getItem(i))) { |
| return i; |
| } |
| } |
| Log.w(TAG, "Corpus not in adapter: " + corpus); |
| return 0; |
| } |
| |
| public View getView(int position, View convertView, ViewGroup parent) { |
| CorpusView view = (CorpusView) convertView; |
| if (view == null) { |
| view = createView(parent); |
| } |
| Corpus corpus = getItem(position); |
| if (DBG) Log.d(TAG, "Binding " + position + ", corpus=" + corpus); |
| bindView(view, corpus); |
| return view; |
| } |
| |
| protected void bindView(CorpusView view, Corpus corpus) { |
| Drawable icon = getCorpusIcon(corpus); |
| CharSequence label = getCorpusLabel(corpus); |
| boolean isCurrent = isCurrentCorpus(corpus); |
| if (DBG) Log.d(TAG, "bind:name=" + corpus + ",label=" + label + ",current=" + isCurrent); |
| view.setIcon(icon); |
| view.setLabel(label); |
| view.setChecked(isCurrent); |
| } |
| |
| protected Drawable getCorpusIcon(Corpus corpus) { |
| if (corpus == null) { |
| return mContext.getResources().getDrawable(R.mipmap.search_app_icon); |
| } else { |
| return corpus.getCorpusIcon(); |
| } |
| } |
| |
| protected CharSequence getCorpusLabel(Corpus corpus) { |
| if (corpus == null) { |
| return mContext.getText(R.string.corpus_label_global); |
| } else { |
| return corpus.getLabel(); |
| } |
| } |
| |
| protected boolean isCurrentCorpus(Corpus corpus) { |
| if (corpus == null) { |
| return mCurrentCorpusName == null; |
| } else { |
| return corpus.getName().equals(mCurrentCorpusName); |
| } |
| } |
| |
| protected CorpusView createView(ViewGroup parent) { |
| return (CorpusView) LayoutInflater.from(mContext).inflate(mCorpusViewRes, parent, false); |
| } |
| |
| protected LayoutInflater getInflater() { |
| return (LayoutInflater) mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE); |
| } |
| |
| private class CorporaObserver extends DataSetObserver { |
| @Override |
| public void onChanged() { |
| updateCorpora(); |
| } |
| |
| @Override |
| public void onInvalidated() { |
| updateCorpora(); |
| } |
| } |
| |
| } |