CorporaAdapter.java revision a576b1abd602c08dcf0d470facc43fac0243b07c 
1/*
2 * Copyright (C) 2009 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package com.android.quicksearchbox.ui;
18
19import com.android.quicksearchbox.Corpora;
20import com.android.quicksearchbox.Corpus;
21import com.android.quicksearchbox.CorpusRanker;
22
23import android.graphics.drawable.Drawable;
24import android.util.Log;
25import android.view.View;
26import android.view.ViewGroup;
27import android.widget.BaseAdapter;
28
29import java.util.ArrayList;
30
31/**
32 * Adapter for showing a list of sources in the source selection activity.
33 */
34public class CorporaAdapter extends BaseAdapter {
35
36    private static final String TAG = "CorporaAdapter";
37    private static final boolean DBG = true;
38
39    private final CorpusViewFactory mViewFactory;
40
41    private ArrayList<Corpus> mRankedEnabledCorpora;
42
43    private boolean mGridView;
44
45    private CorporaAdapter(CorpusViewFactory viewFactory, Corpora corpora,
46            CorpusRanker ranker, boolean gridView) {
47        mViewFactory = viewFactory;
48        mRankedEnabledCorpora = ranker.rankCorpora(corpora.getEnabledCorpora());
49        mGridView = gridView;
50    }
51
52    public static CorporaAdapter createListAdapter(CorpusViewFactory viewFactory, Corpora corpora,
53            CorpusRanker ranker) {
54        return new CorporaAdapter(viewFactory, corpora, ranker, false);
55    }
56
57    public static CorporaAdapter createGridAdapter(CorpusViewFactory viewFactory, Corpora corpora,
58            CorpusRanker ranker) {
59        return new CorporaAdapter(viewFactory, corpora, ranker, true);
60    }
61
62    public int getCount() {
63        return 1 + mRankedEnabledCorpora.size();
64    }
65
66    public Corpus getItem(int position) {
67        if (position == 0) {
68            return null;
69        } else {
70            return mRankedEnabledCorpora.get(position - 1);
71        }
72    }
73
74    public long getItemId(int position) {
75        return position;
76    }
77
78    public View getView(int position, View convertView, ViewGroup parent) {
79        CorpusView view = (CorpusView) convertView;
80        if (view == null) {
81            view = createView(parent);
82        }
83        Corpus corpus = getItem(position);
84        Drawable icon;
85        CharSequence label;
86        if (corpus == null) {
87            icon = mViewFactory.getGlobalSearchIcon();
88            label = mViewFactory.getGlobalSearchLabel();
89        } else {
90            icon = corpus.getCorpusIcon();
91            label = corpus.getLabel();
92        }
93        if (DBG) Log.d(TAG, "Binding " + position + ", label=" + label);
94        view.setIcon(icon);
95        view.setLabel(label);
96        return view;
97    }
98
99    protected CorpusView createView(ViewGroup parent) {
100        if (mGridView) {
101            return mViewFactory.createGridCorpusView(parent);
102        } else {
103            return mViewFactory.createListCorpusView(parent);
104        }
105    }
106
107}
108