CorpusSelectionDialog.java revision 59920d0365c0ab334935a4f6a6804eae1d278662 
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;
18
19import com.android.quicksearchbox.ui.CorporaAdapter;
20import com.android.quicksearchbox.ui.CorpusViewFactory;
21
22import android.app.Dialog;
23import android.app.SearchManager;
24import android.content.ActivityNotFoundException;
25import android.content.Context;
26import android.content.Intent;
27import android.content.res.Resources;
28import android.os.Bundle;
29import android.util.Log;
30import android.view.Gravity;
31import android.view.Menu;
32import android.view.View;
33import android.view.Window;
34import android.view.WindowManager;
35import android.widget.AdapterView;
36import android.widget.GridView;
37
38
39/**
40 * Corpus selection dialog.
41 */
42public class CorpusSelectionDialog extends Dialog {
43
44    private static final boolean DBG = true;
45    private static final String TAG = "QSB.SelectSearchSourceDialog";
46
47    private GridView mCorpusGrid;
48
49    private Corpus mCorpus;
50
51    private String mQuery;
52
53    private Bundle mAppData;
54
55    private CorporaAdapter mAdapter;
56
57    public CorpusSelectionDialog(Context context) {
58        super(context, R.style.Theme_SelectSearchSource);
59        setContentView(R.layout.corpus_selection_dialog);
60        mCorpusGrid = (GridView) findViewById(R.id.corpus_grid);
61        mCorpusGrid.setOnItemClickListener(new CorpusClickListener());
62        // TODO: for some reason, putting this in the XML layout instead makes
63        // the list items unclickable.
64        mCorpusGrid.setFocusable(true);
65        setCanceledOnTouchOutside(true);
66        positionWindow();
67    }
68
69    public void setCorpus(Corpus corpus) {
70        mCorpus = corpus;
71    }
72
73    public void setQuery(String query) {
74        mQuery = query;
75    }
76
77    public void setAppData(Bundle appData) {
78        mAppData = appData;
79    }
80
81    private void positionWindow() {
82        Resources resources = getContext().getResources();
83        int x = resources.getDimensionPixelSize(R.dimen.corpus_selection_dialog_x);
84        int y = resources.getDimensionPixelSize(R.dimen.corpus_selection_dialog_y);
85        positionWindowAt(x, y);
86    }
87
88    private void positionWindowAt(int x, int y) {
89        Window window = getWindow();
90        WindowManager.LayoutParams lp = window.getAttributes();
91        lp.x = x;
92        lp.y = y;
93        lp.gravity = Gravity.TOP | Gravity.LEFT;
94        lp.width = WindowManager.LayoutParams.MATCH_PARENT;
95        lp.height = WindowManager.LayoutParams.WRAP_CONTENT;
96        // Put window on top of input method
97        lp.flags |= WindowManager.LayoutParams.FLAG_ALT_FOCUSABLE_IM;
98        window.setAttributes(lp);
99        if (DBG) Log.d(TAG, "Window params: " + lp);
100    }
101
102    @Override
103    protected void onStart() {
104        super.onStart();
105        setAdapter(CorporaAdapter.createGridAdapter(getViewFactory(), getCorpora(),
106                getCorpusRanker()));
107    }
108
109    @Override
110    protected void onStop() {
111        setAdapter(null);
112        super.onStop();
113    }
114
115    @Override
116    public boolean onCreateOptionsMenu(Menu menu) {
117        super.onCreateOptionsMenu(menu);
118        SearchSettings.addSearchSettingsMenuItem(getContext(), menu);
119        return true;
120    }
121
122    private void setAdapter(CorporaAdapter adapter) {
123        if (adapter == mAdapter) return;
124        if (mAdapter != null) mAdapter.close();
125        mAdapter = adapter;
126        mCorpusGrid.setAdapter(mAdapter);
127    }
128
129    private QsbApplication getQsbApplication() {
130        return (QsbApplication) getContext().getApplicationContext();
131    }
132
133    private Corpora getCorpora() {
134        return getQsbApplication().getCorpora();
135    }
136
137    private CorpusRanker getCorpusRanker() {
138        return getQsbApplication().getCorpusRanker();
139    }
140
141    private CorpusViewFactory getViewFactory() {
142        return getQsbApplication().getCorpusViewFactory();
143    }
144
145    protected void selectCorpus(Corpus corpus) {
146        dismiss();
147        // If a new source was selected, start QSB with that source.
148        // If the old source was selected, just finish.
149        if (!isCurrentCorpus(corpus)) {
150            switchCorpus(corpus);
151        }
152    }
153
154    private boolean isCurrentCorpus(Corpus corpus) {
155        if (corpus == null) return mCorpus == null;
156        return corpus.equals(mCorpus);
157    }
158
159    private void switchCorpus(Corpus corpus) {
160        if (DBG) Log.d(TAG, "switchSource(" + corpus + ")");
161
162        Intent searchIntent = new Intent(SearchManager.INTENT_ACTION_GLOBAL_SEARCH);
163        searchIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
164        searchIntent.setData(SearchActivity.getCorpusUri(corpus));
165        searchIntent.putExtra(SearchManager.QUERY, mQuery);
166        searchIntent.putExtra(SearchManager.APP_DATA, mAppData);
167
168        try {
169            if (DBG) Log.d(TAG, "startActivity(" + searchIntent.toUri(0) + ")");
170            getOwnerActivity().startActivity(searchIntent);
171        } catch (ActivityNotFoundException ex) {
172            Log.e(TAG, "Couldn't start QSB: " + ex);
173        }
174    }
175
176    private class CorpusClickListener implements AdapterView.OnItemClickListener {
177        public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
178            Corpus corpus = (Corpus) parent.getItemAtPosition(position);
179            selectCorpus(corpus);
180        }
181    }
182}
183