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 
17 package com.android.launcher3.widget;
18 
19 import static com.android.launcher3.anim.Interpolators.FAST_OUT_SLOW_IN;
20 
21 import android.animation.PropertyValuesHolder;
22 import android.content.Context;
23 import android.graphics.Rect;
24 import android.util.AttributeSet;
25 import android.util.IntProperty;
26 import android.util.Pair;
27 import android.view.Gravity;
28 import android.view.LayoutInflater;
29 import android.view.View;
30 import android.view.ViewGroup;
31 import android.view.animation.Interpolator;
32 import android.widget.TextView;
33 
34 import com.android.launcher3.Insettable;
35 import com.android.launcher3.LauncherAppState;
36 import com.android.launcher3.R;
37 import com.android.launcher3.ResourceUtils;
38 import com.android.launcher3.anim.PendingAnimation;
39 import com.android.launcher3.model.WidgetItem;
40 import com.android.launcher3.model.data.ItemInfo;
41 import com.android.launcher3.util.PackageUserKey;
42 
43 import java.util.List;
44 
45 /**
46  * Bottom sheet for the "Widgets" system shortcut in the long-press popup.
47  */
48 public class WidgetsBottomSheet extends BaseWidgetSheet implements Insettable {
49 
50     private static final IntProperty<View> PADDING_BOTTOM =
51             new IntProperty<View>("paddingBottom") {
52                 @Override
53                 public void setValue(View view, int paddingBottom) {
54                     view.setPadding(view.getPaddingLeft(), view.getPaddingTop(),
55                             view.getPaddingRight(), paddingBottom);
56                 }
57 
58                 @Override
59                 public Integer get(View view) {
60                     return view.getPaddingBottom();
61                 }
62             };
63 
64     private static final int DEFAULT_CLOSE_DURATION = 200;
65     private ItemInfo mOriginalItemInfo;
66     private Rect mInsets;
67 
WidgetsBottomSheet(Context context, AttributeSet attrs)68     public WidgetsBottomSheet(Context context, AttributeSet attrs) {
69         this(context, attrs, 0);
70     }
71 
WidgetsBottomSheet(Context context, AttributeSet attrs, int defStyleAttr)72     public WidgetsBottomSheet(Context context, AttributeSet attrs, int defStyleAttr) {
73         super(context, attrs, defStyleAttr);
74         setWillNotDraw(false);
75         mInsets = new Rect();
76         mContent = this;
77     }
78 
79     @Override
onLayout(boolean changed, int l, int t, int r, int b)80     protected void onLayout(boolean changed, int l, int t, int r, int b) {
81         super.onLayout(changed, l, t, r, b);
82         setTranslationShift(mTranslationShift);
83     }
84 
populateAndShow(ItemInfo itemInfo)85     public void populateAndShow(ItemInfo itemInfo) {
86         mOriginalItemInfo = itemInfo;
87         ((TextView) findViewById(R.id.title)).setText(getContext().getString(
88                 R.string.widgets_bottom_sheet_title, mOriginalItemInfo.title));
89 
90         onWidgetsBound();
91         attachToContainer();
92         mIsOpen = false;
93         animateOpen();
94     }
95 
96     @Override
onWidgetsBound()97     public void onWidgetsBound() {
98         List<WidgetItem> widgets = mLauncher.getPopupDataProvider().getWidgetsForPackageUser(
99                 new PackageUserKey(
100                         mOriginalItemInfo.getTargetComponent().getPackageName(),
101                         mOriginalItemInfo.user));
102 
103         ViewGroup widgetRow = findViewById(R.id.widgets);
104         ViewGroup widgetCells = widgetRow.findViewById(R.id.widgets_cell_list);
105 
106         widgetCells.removeAllViews();
107 
108         for (int i = 0; i < widgets.size(); i++) {
109             WidgetCell widget = addItemCell(widgetCells);
110             widget.applyFromCellItem(widgets.get(i), LauncherAppState.getInstance(mLauncher)
111                     .getWidgetCache());
112             widget.ensurePreview();
113             widget.setVisibility(View.VISIBLE);
114             if (i < widgets.size() - 1) {
115                 addDivider(widgetCells);
116             }
117         }
118 
119         if (widgets.size() == 1) {
120             // If there is only one widget, we want to center it instead of left-align.
121             WidgetsBottomSheet.LayoutParams params = (WidgetsBottomSheet.LayoutParams)
122                     widgetRow.getLayoutParams();
123             params.gravity = Gravity.CENTER_HORIZONTAL;
124         } else {
125             // Otherwise, add an empty view to the start as padding (but still scroll edge to edge).
126             View leftPaddingView = LayoutInflater.from(getContext()).inflate(
127                     R.layout.widget_list_divider, widgetRow, false);
128             leftPaddingView.getLayoutParams().width = ResourceUtils.pxFromDp(
129                     16, getResources().getDisplayMetrics());
130             widgetCells.addView(leftPaddingView, 0);
131         }
132     }
133 
addDivider(ViewGroup parent)134     private void addDivider(ViewGroup parent) {
135         LayoutInflater.from(getContext()).inflate(R.layout.widget_list_divider, parent, true);
136     }
137 
addItemCell(ViewGroup parent)138     protected WidgetCell addItemCell(ViewGroup parent) {
139         WidgetCell widget = (WidgetCell) LayoutInflater.from(getContext()).inflate(
140                 R.layout.widget_cell, parent, false);
141 
142         widget.setOnClickListener(this);
143         widget.setOnLongClickListener(this);
144         widget.setAnimatePreview(false);
145 
146         parent.addView(widget);
147         return widget;
148     }
149 
animateOpen()150     private void animateOpen() {
151         if (mIsOpen || mOpenCloseAnimator.isRunning()) {
152             return;
153         }
154         mIsOpen = true;
155         setupNavBarColor();
156         mOpenCloseAnimator.setValues(
157                 PropertyValuesHolder.ofFloat(TRANSLATION_SHIFT, TRANSLATION_SHIFT_OPENED));
158         mOpenCloseAnimator.setInterpolator(FAST_OUT_SLOW_IN);
159         mOpenCloseAnimator.start();
160     }
161 
162     @Override
handleClose(boolean animate)163     protected void handleClose(boolean animate) {
164         handleClose(animate, DEFAULT_CLOSE_DURATION);
165     }
166 
167     @Override
isOfType(@loatingViewType int type)168     protected boolean isOfType(@FloatingViewType int type) {
169         return (type & TYPE_WIDGETS_BOTTOM_SHEET) != 0;
170     }
171 
172     @Override
setInsets(Rect insets)173     public void setInsets(Rect insets) {
174         // Extend behind left, right, and bottom insets.
175         int leftInset = insets.left - mInsets.left;
176         int rightInset = insets.right - mInsets.right;
177         int bottomInset = insets.bottom - mInsets.bottom;
178         mInsets.set(insets);
179         setPadding(leftInset, getPaddingTop(), rightInset, bottomInset);
180     }
181 
182     @Override
getElementsRowCount()183     protected int getElementsRowCount() {
184         return 1;
185     }
186 
187     @Override
getAccessibilityTarget()188     protected Pair<View, String> getAccessibilityTarget() {
189         return Pair.create(findViewById(R.id.title),  getContext().getString(
190                 mIsOpen ? R.string.widgets_list : R.string.widgets_list_closed));
191     }
192 
193     @Override
addHintCloseAnim( float distanceToMove, Interpolator interpolator, PendingAnimation target)194     public void addHintCloseAnim(
195             float distanceToMove, Interpolator interpolator, PendingAnimation target) {
196         target.setInt(this, PADDING_BOTTOM, (int) (distanceToMove + mInsets.bottom), interpolator);
197     }
198 }
199