SearchActivityViewTwoPane.java revision f95d552f5a4d8b61219f4c06ce6698ed2a5f0e10 
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                PopupMenu popup = new PopupMenu(getContext(), mMenuButton);
74                Menu menu = popup.getMenu();
75                getActivity().onCreateOptionsMenu(menu);
76                getActivity().onPrepareOptionsMenu(menu);
77                popup.show();
78            }
79        });
80
81        mResultsView = (ClusteredSuggestionsView) findViewById(R.id.shortcuts);
82        mResultsAdapter = createClusteredSuggestionsAdapter();
83        mResultsAdapter.setSuggestionAdapterChangeListener(this);
84        mResultsAdapter.getListAdapter().registerDataSetObserver(new DataSetObserver(){
85            @Override
86            public void onChanged() {
87                mResultsView.expandAll();
88            }
89        });
90        mResultsView.setOnKeyListener(new SuggestionsViewKeyListener());
91        mResultsHeader = findViewById(R.id.shortcut_title);
92
93        mSuggestionsAdapter.setIcon1Enabled(false);
94    }
95
96    protected SuggestionsAdapter<ExpandableListAdapter> createClusteredSuggestionsAdapter() {
97        return new DelayingSuggestionsAdapter<ExpandableListAdapter>(
98                new ClusteredSuggestionsAdapter(
99                        getQsbApplication().getDefaultSuggestionViewFactory(),
100                        getQsbApplication().getCorpora(), getContext()));
101    }
102
103    @Override
104    public void onSuggestionAdapterChanged() {
105        mResultsView.setSuggestionsAdapter(mResultsAdapter);
106        super.onSuggestionAdapterChanged();
107    }
108
109    @Override
110    public void onResume() {
111        setupWallpaperTint();
112    }
113
114    private void setupWallpaperTint() {
115        // Alpha fade-in the background tint when the activity resumes.
116        final Drawable drawable = getBackground();
117        drawable.setAlpha(0);
118        ValueAnimator animator = ObjectAnimator.ofInt(drawable, "alpha", 0, 255);
119        animator.setDuration(TINT_ANIMATION_DURATION);
120        animator.addUpdateListener(new AnimatorUpdateListener() {
121
122            public void onAnimationUpdate(ValueAnimator animator) {
123                drawable.invalidateSelf();
124            }
125        });
126        animator.setStartDelay(TINT_ANIMATION_START_DELAY);
127        animator.setInterpolator(new android.view.animation.LinearInterpolator());
128        animator.start();
129    }
130
131    @Override
132    public void onStop() {
133    }
134
135    @Override
136    public void start() {
137        super.start();
138        mResultsAdapter.getListAdapter().registerDataSetObserver(new ResultsObserver());
139        mResultsView.setSuggestionsAdapter(mResultsAdapter);
140    }
141
142    @Override
143    public void destroy() {
144        mResultsAdapter.setSuggestionAdapterChangeListener(null);
145        mResultsView.setSuggestionsAdapter(null);
146
147        super.destroy();
148    }
149
150    @Override
151    public void considerHidingInputMethod() {
152        // Don't hide keyboard when interacting with suggestions list
153    }
154
155    @Override
156    public void hideSuggestions() {
157        // Never hiding suggestions view in two-pane UI
158    }
159
160    @Override
161    public void showSuggestions() {
162        // Never hiding suggestions view in two-pane UI
163    }
164
165    @Override
166    public void showCorpusSelectionDialog() {
167        // not used
168    }
169
170    @Override
171    public void clearSuggestions() {
172        super.clearSuggestions();
173        mResultsAdapter.setSuggestions(null);
174    }
175
176    @Override
177    public void setMaxPromotedResults(int maxPromoted) {
178        mResultsView.setLimitSuggestionsToViewHeight(false);
179        mResultsAdapter.setMaxPromoted(maxPromoted);
180    }
181
182    @Override
183    public void limitResultsToViewHeight() {
184        mResultsView.setLimitSuggestionsToViewHeight(true);
185    }
186
187    @Override
188    public void setSuggestionClickListener(SuggestionClickListener listener) {
189        super.setSuggestionClickListener(listener);
190        mResultsAdapter.setSuggestionClickListener(listener);
191    }
192
193    @Override
194    public void setEmptySpaceClickListener(final View.OnClickListener listener) {
195        findViewById(R.id.panes).setOnClickListener(listener);
196    }
197
198    @Override
199    public void setSuggestions(Suggestions suggestions) {
200        super.setSuggestions(suggestions);
201        suggestions.acquire();
202        mResultsAdapter.setSuggestions(suggestions);
203    }
204
205    @Override
206    protected void setCorpus(Corpus corpus) {
207        super.setCorpus(corpus);
208        mResultsAdapter.setPromoter(createResultsPromoter());
209    }
210
211    @Override
212    protected Promoter createSuggestionsPromoter() {
213        return getQsbApplication().createWebPromoter();
214    }
215
216    protected Promoter createResultsPromoter() {
217        Corpus corpus = getCorpus();
218        if (corpus == null) {
219            return getQsbApplication().createResultsPromoter();
220        } else {
221            return getQsbApplication().createSingleCorpusResultsPromoter(corpus);
222        }
223    }
224
225    protected void onResultsChanged() {
226        checkHideResultsHeader();
227    }
228
229    private void checkHideResultsHeader() {
230        if (mResultsHeader != null) {
231            if (!mResultsAdapter.isEmpty()) {
232                if (DBG) Log.d(TAG, "Results non-empty");
233                mResultsHeader.setVisibility(VISIBLE);
234            } else {
235                if (DBG) Log.d(TAG, "Results empty");
236                mResultsHeader.setVisibility(INVISIBLE);
237            }
238        }
239    }
240
241    @Override
242    public Corpus getSearchCorpus() {
243        return getWebCorpus();
244    }
245
246    protected class ResultsObserver extends DataSetObserver {
247        @Override
248        public void onChanged() {
249            onResultsChanged();
250        }
251    }
252
253}
254