1 /*
2  * Copyright (C) 2017 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 package com.android.launcher3.allapps.search;
17 
18 import static android.view.View.MeasureSpec.EXACTLY;
19 import static android.view.View.MeasureSpec.getSize;
20 import static android.view.View.MeasureSpec.makeMeasureSpec;
21 
22 import static com.android.launcher3.Utilities.prefixTextWithIcon;
23 import static com.android.launcher3.icons.IconNormalizer.ICON_VISIBLE_AREA_FACTOR;
24 
25 import android.content.Context;
26 import android.graphics.Rect;
27 import android.text.Selection;
28 import android.text.SpannableStringBuilder;
29 import android.text.method.TextKeyListener;
30 import android.util.AttributeSet;
31 import android.view.KeyEvent;
32 import android.view.View;
33 import android.view.ViewGroup.MarginLayoutParams;
34 import android.view.animation.Interpolator;
35 import android.widget.EditText;
36 
37 import com.android.launcher3.BaseDraggingActivity;
38 import com.android.launcher3.DeviceProfile;
39 import com.android.launcher3.ExtendedEditText;
40 import com.android.launcher3.Insettable;
41 import com.android.launcher3.R;
42 import com.android.launcher3.allapps.AllAppsContainerView;
43 import com.android.launcher3.allapps.AllAppsStore;
44 import com.android.launcher3.allapps.AlphabeticalAppsList;
45 import com.android.launcher3.allapps.SearchUiManager;
46 import com.android.launcher3.anim.PropertySetter;
47 import com.android.launcher3.util.ComponentKey;
48 
49 import java.util.ArrayList;
50 
51 /**
52  * Layout to contain the All-apps search UI.
53  */
54 public class AppsSearchContainerLayout extends ExtendedEditText
55         implements SearchUiManager, AllAppsSearchBarController.Callbacks,
56         AllAppsStore.OnUpdateListener, Insettable {
57 
58     private final BaseDraggingActivity mLauncher;
59     private final AllAppsSearchBarController mSearchBarController;
60     private final SpannableStringBuilder mSearchQueryBuilder;
61 
62     private AlphabeticalAppsList mApps;
63     private AllAppsContainerView mAppsView;
64 
65     // The amount of pixels to shift down and overlap with the rest of the content.
66     private final int mContentOverlap;
67 
AppsSearchContainerLayout(Context context)68     public AppsSearchContainerLayout(Context context) {
69         this(context, null);
70     }
71 
AppsSearchContainerLayout(Context context, AttributeSet attrs)72     public AppsSearchContainerLayout(Context context, AttributeSet attrs) {
73         this(context, attrs, 0);
74     }
75 
AppsSearchContainerLayout(Context context, AttributeSet attrs, int defStyleAttr)76     public AppsSearchContainerLayout(Context context, AttributeSet attrs, int defStyleAttr) {
77         super(context, attrs, defStyleAttr);
78 
79         mLauncher = BaseDraggingActivity.fromContext(context);
80         mSearchBarController = new AllAppsSearchBarController();
81 
82         mSearchQueryBuilder = new SpannableStringBuilder();
83         Selection.setSelection(mSearchQueryBuilder, 0);
84         setHint(prefixTextWithIcon(getContext(), R.drawable.ic_allapps_search, getHint()));
85 
86         mContentOverlap =
87                 getResources().getDimensionPixelSize(R.dimen.all_apps_search_bar_field_height) / 2;
88     }
89 
90     @Override
onAttachedToWindow()91     protected void onAttachedToWindow() {
92         super.onAttachedToWindow();
93         mAppsView.getAppsStore().addUpdateListener(this);
94     }
95 
96     @Override
onDetachedFromWindow()97     protected void onDetachedFromWindow() {
98         super.onDetachedFromWindow();
99         mAppsView.getAppsStore().removeUpdateListener(this);
100     }
101 
102     @Override
onMeasure(int widthMeasureSpec, int heightMeasureSpec)103     protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
104         // Update the width to match the grid padding
105         DeviceProfile dp = mLauncher.getDeviceProfile();
106         int myRequestedWidth = getSize(widthMeasureSpec);
107         int rowWidth = myRequestedWidth - mAppsView.getActiveRecyclerView().getPaddingLeft()
108                 - mAppsView.getActiveRecyclerView().getPaddingRight();
109 
110         int cellWidth = DeviceProfile.calculateCellWidth(rowWidth, dp.inv.numHotseatIcons);
111         int iconVisibleSize = Math.round(ICON_VISIBLE_AREA_FACTOR * dp.iconSizePx);
112         int iconPadding = cellWidth - iconVisibleSize;
113 
114         int myWidth = rowWidth - iconPadding + getPaddingLeft() + getPaddingRight();
115         super.onMeasure(makeMeasureSpec(myWidth, EXACTLY), heightMeasureSpec);
116     }
117 
118     @Override
onLayout(boolean changed, int left, int top, int right, int bottom)119     protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
120         super.onLayout(changed, left, top, right, bottom);
121 
122         // Shift the widget horizontally so that its centered in the parent (b/63428078)
123         View parent = (View) getParent();
124         int availableWidth = parent.getWidth() - parent.getPaddingLeft() - parent.getPaddingRight();
125         int myWidth = right - left;
126         int expectedLeft = parent.getPaddingLeft() + (availableWidth - myWidth) / 2;
127         int shift = expectedLeft - left;
128         setTranslationX(shift);
129 
130         offsetTopAndBottom(mContentOverlap);
131     }
132 
133     @Override
initialize(AllAppsContainerView appsView)134     public void initialize(AllAppsContainerView appsView) {
135         mApps = appsView.getApps();
136         mAppsView = appsView;
137         mSearchBarController.initialize(
138                 new DefaultAppSearchAlgorithm(mApps.getApps()), this, mLauncher, this);
139     }
140 
141     @Override
onAppsUpdated()142     public void onAppsUpdated() {
143         mSearchBarController.refreshSearchResult();
144     }
145 
146     @Override
resetSearch()147     public void resetSearch() {
148         mSearchBarController.reset();
149     }
150 
151     @Override
preDispatchKeyEvent(KeyEvent event)152     public void preDispatchKeyEvent(KeyEvent event) {
153         // Determine if the key event was actual text, if so, focus the search bar and then dispatch
154         // the key normally so that it can process this key event
155         if (!mSearchBarController.isSearchFieldFocused() &&
156                 event.getAction() == KeyEvent.ACTION_DOWN) {
157             final int unicodeChar = event.getUnicodeChar();
158             final boolean isKeyNotWhitespace = unicodeChar > 0 &&
159                     !Character.isWhitespace(unicodeChar) && !Character.isSpaceChar(unicodeChar);
160             if (isKeyNotWhitespace) {
161                 boolean gotKey = TextKeyListener.getInstance().onKeyDown(this, mSearchQueryBuilder,
162                         event.getKeyCode(), event);
163                 if (gotKey && mSearchQueryBuilder.length() > 0) {
164                     mSearchBarController.focusSearchField();
165                 }
166             }
167         }
168     }
169 
170     @Override
onSearchResult(String query, ArrayList<ComponentKey> apps)171     public void onSearchResult(String query, ArrayList<ComponentKey> apps) {
172         if (apps != null) {
173             mApps.setOrderedFilter(apps);
174             notifyResultChanged();
175             mAppsView.setLastSearchQuery(query);
176         }
177     }
178 
179     @Override
clearSearchResult()180     public void clearSearchResult() {
181         if (mApps.setOrderedFilter(null)) {
182             notifyResultChanged();
183         }
184 
185         // Clear the search query
186         mSearchQueryBuilder.clear();
187         mSearchQueryBuilder.clearSpans();
188         Selection.setSelection(mSearchQueryBuilder, 0);
189         mAppsView.onClearSearchResult();
190     }
191 
notifyResultChanged()192     private void notifyResultChanged() {
193         mAppsView.onSearchResultsChanged();
194     }
195 
196     @Override
setInsets(Rect insets)197     public void setInsets(Rect insets) {
198         MarginLayoutParams mlp = (MarginLayoutParams) getLayoutParams();
199         mlp.topMargin = insets.top;
200         requestLayout();
201     }
202 
203     @Override
getScrollRangeDelta(Rect insets)204     public float getScrollRangeDelta(Rect insets) {
205         if (mLauncher.getDeviceProfile().isVerticalBarLayout()) {
206             return 0;
207         } else {
208             return insets.bottom + insets.top;
209         }
210     }
211 
212     @Override
setContentVisibility(int visibleElements, PropertySetter setter, Interpolator interpolator)213     public void setContentVisibility(int visibleElements, PropertySetter setter,
214             Interpolator interpolator) {
215         setter.setViewAlpha(this, isQsbVisible(visibleElements) ? 1 : 0, interpolator);
216     }
217 
218     @Override
setTextSearchEnabled(boolean isEnabled)219     public EditText setTextSearchEnabled(boolean isEnabled) {
220         return this;
221     }
222 }
223