SearchActivityViewTwoPane.java revision 73a375928e0b8f0b2bfa09e4b252cfcbdad4ef84 
1/*
2 * Copyright (C) 2010 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.Corpus;
20import com.android.quicksearchbox.Promoter;
21import com.android.quicksearchbox.R;
22import com.android.quicksearchbox.Suggestions;
23
24import android.animation.ObjectAnimator;
25import android.animation.ValueAnimator;
26import android.animation.ValueAnimator.AnimatorUpdateListener;
27import android.content.Context;
28import android.database.DataSetObserver;
29import android.graphics.drawable.Drawable;
30import android.util.AttributeSet;
31import android.util.Log;
32import android.view.Menu;
33import android.view.MenuItem;
34import android.view.View;
35import android.widget.ExpandableListAdapter;
36import android.widget.ImageView;
37import android.widget.PopupMenu;
38
39/**
40 * Two-pane variant for the search activity view.
41 */
42public class SearchActivityViewTwoPane extends SearchActivityView {
43
44    private static final int TINT_ANIMATION_DURATION = 300; // in millis
45    private static final int TINT_ANIMATION_START_DELAY = 400; // in millis
46
47    private ImageView mMenuButton;
48
49    // View that shows the results other than the query completions
50    private ClusteredSuggestionsView mResultsView;
51    private SuggestionsAdapter<ExpandableListAdapter> mResultsAdapter;
52    private View mResultsHeader;
53
54    public SearchActivityViewTwoPane(Context context) {
55        super(context);
56    }
57
58    public SearchActivityViewTwoPane(Context context, AttributeSet attrs) {
59        super(context, attrs);
60    }
61
62    public SearchActivityViewTwoPane(Context context, AttributeSet attrs, int defStyle) {
63        super(context, attrs, defStyle);
64    }
65
66    @Override
67    protected void onFinishInflate() {
68        super.onFinishInflate();
69
70        mMenuButton = (ImageView) findViewById(R.id.menu_button);
71        mMenuButton.setOnClickListener(new View.OnClickListener() {
72            public void onClick(View v) {
73                showPopupMenu();
74            }
75        });
76
77        mResultsView = (ClusteredSuggestionsView) findViewById(R.id.shortcuts);
78        mResultsAdapter = createClusteredSuggestionsAdapter();
79        mResultsAdapter.setSuggestionAdapterChangeListener(this);
80        mResultsAdapter.getListAdapter().registerDataSetObserver(new DataSetObserver(){
81            @Override
82            public void onChanged() {
83                mResultsView.expandAll();
84            }
85        });
86        mResultsView.setOnKeyListener(new SuggestionsViewKeyListener());
87        mResultsHeader = findViewById(R.id.shortcut_title);
88
89        mSuggestionsAdapter.setIcon1Enabled(false);
90    }
91
92    private void showPopupMenu() {
93        PopupMenu popup = new PopupMenu(getContext(), mMenuButton);
94        Menu menu = popup.getMenu();
95        getActivity().createMenuItems(menu, false);
96        popup.show();
97    }
98
99    protected SuggestionsAdapter<ExpandableListAdapter> createClusteredSuggestionsAdapter() {
100        return new DelayingSuggestionsAdapter<ExpandableListAdapter>(
101                new ClusteredSuggestionsAdapter(
102                        getQsbApplication().getDefaultSuggestionViewFactory(),
103                        getQsbApplication().getCorpora(), getContext()));
104    }
105
106    @Override
107    public void onSuggestionAdapterChanged() {
108        mResultsView.setSuggestionsAdapter(mResultsAdapter);
109        super.onSuggestionAdapterChanged();
110    }
111
112    @Override
113    public void onResume() {
114        setupWallpaperTint();
115    }
116
117    private void setupWallpaperTint() {
118        // Alpha fade-in the background tint when the activity resumes.
119        final Drawable drawable = getBackground();
120        drawable.setAlpha(0);
121        ValueAnimator animator = ObjectAnimator.ofInt(drawable, "alpha", 0, 255);
122        animator.setDuration(TINT_ANIMATION_DURATION);
123        animator.addUpdateListener(new AnimatorUpdateListener() {
124
125            public void onAnimationUpdate(ValueAnimator animator) {
126                drawable.invalidateSelf();
127            }
128        });
129        animator.setStartDelay(TINT_ANIMATION_START_DELAY);
130        animator.setInterpolator(new android.view.animation.LinearInterpolator());
131        animator.start();
132    }
133
134    @Override
135    public void onStop() {
136    }
137
138    @Override
139    public void start() {
140        super.start();
141        mResultsAdapter.getListAdapter().registerDataSetObserver(new ResultsObserver());
142        mResultsView.setSuggestionsAdapter(mResultsAdapter);
143    }
144
145    @Override
146    public void destroy() {
147        mResultsAdapter.setSuggestionAdapterChangeListener(null);
148        mResultsView.setSuggestionsAdapter(null);
149
150        super.destroy();
151    }
152
153    @Override
154    public void considerHidingInputMethod() {
155        // Don't hide keyboard when interacting with suggestions list
156    }
157
158    @Override
159    public void hideSuggestions() {
160        // Never hiding suggestions view in two-pane UI
161    }
162
163    @Override
164    public void showSuggestions() {
165        // Never hiding suggestions view in two-pane UI
166    }
167
168    @Override
169    public void showCorpusSelectionDialog() {
170        // not used
171    }
172
173    @Override
174    public void clearSuggestions() {
175        super.clearSuggestions();
176        mResultsAdapter.setSuggestions(null);
177    }
178
179    @Override
180    public void setMaxPromotedResults(int maxPromoted) {
181        mResultsView.setLimitSuggestionsToViewHeight(false);
182        mResultsAdapter.setMaxPromoted(maxPromoted);
183    }
184
185    @Override
186    public void limitResultsToViewHeight() {
187        mResultsView.setLimitSuggestionsToViewHeight(true);
188    }
189
190    @Override
191    public void setSuggestionClickListener(SuggestionClickListener listener) {
192        super.setSuggestionClickListener(listener);
193        mResultsAdapter.setSuggestionClickListener(listener);
194    }
195
196    @Override
197    public void setEmptySpaceClickListener(final View.OnClickListener listener) {
198        findViewById(R.id.panes).setOnClickListener(listener);
199    }
200
201    @Override
202    public void setSuggestions(Suggestions suggestions) {
203        super.setSuggestions(suggestions);
204        suggestions.acquire();
205        mResultsAdapter.setSuggestions(suggestions);
206    }
207
208    @Override
209    protected void setCorpus(Corpus corpus) {
210        super.setCorpus(corpus);
211        mResultsAdapter.setPromoter(createResultsPromoter());
212    }
213
214    @Override
215    protected Promoter createSuggestionsPromoter() {
216        return getQsbApplication().createWebPromoter();
217    }
218
219    protected Promoter createResultsPromoter() {
220        Corpus corpus = getCorpus();
221        if (corpus == null) {
222            return getQsbApplication().createResultsPromoter();
223        } else {
224            return getQsbApplication().createSingleCorpusResultsPromoter(corpus);
225        }
226    }
227
228    protected void onResultsChanged() {
229        checkHideResultsHeader();
230    }
231
232    private void checkHideResultsHeader() {
233        if (mResultsHeader != null) {
234            if (!mResultsAdapter.isEmpty()) {
235                if (DBG) Log.d(TAG, "Results non-empty");
236                mResultsHeader.setVisibility(VISIBLE);
237            } else {
238                if (DBG) Log.d(TAG, "Results empty");
239                mResultsHeader.setVisibility(INVISIBLE);
240            }
241        }
242    }
243
244    @Override
245    public Corpus getSearchCorpus() {
246        return getWebCorpus();
247    }
248
249    protected class ResultsObserver extends DataSetObserver {
250        @Override
251        public void onChanged() {
252            onResultsChanged();
253        }
254    }
255
256}
257