1 /*
2  * Copyright (C) 2015 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.phone;
18 
19 import android.animation.Animator;
20 import android.animation.AnimatorListenerAdapter;
21 import android.annotation.Nullable;
22 import android.content.ComponentName;
23 import android.content.Context;
24 import android.content.Intent;
25 import android.content.pm.ResolveInfo;
26 import android.telephony.TelephonyManager;
27 import android.text.Layout;
28 import android.text.TextUtils;
29 import android.util.AttributeSet;
30 import android.util.TypedValue;
31 import android.view.Gravity;
32 import android.view.MotionEvent;
33 import android.view.View;
34 import android.view.ViewAnimationUtils;
35 import android.view.ViewGroup;
36 import android.view.accessibility.AccessibilityManager;
37 import android.view.animation.AnimationUtils;
38 import android.view.animation.Interpolator;
39 import android.widget.Button;
40 import android.widget.FrameLayout;
41 import android.widget.TextView;
42 
43 import java.util.List;
44 
45 public class EmergencyActionGroup extends FrameLayout implements View.OnClickListener {
46 
47     private static final long HIDE_DELAY = 3000;
48     private static final int RIPPLE_DURATION = 600;
49     private static final long RIPPLE_PAUSE = 1000;
50 
51     private final Interpolator mFastOutLinearInInterpolator;
52 
53     private ViewGroup mSelectedContainer;
54     private TextView mSelectedLabel;
55     private View mRippleView;
56     private View mLaunchHint;
57 
58     private View mLastRevealed;
59 
60     private MotionEvent mPendingTouchEvent;
61 
62     private boolean mHiding;
63 
EmergencyActionGroup(Context context, @Nullable AttributeSet attrs)64     public EmergencyActionGroup(Context context, @Nullable AttributeSet attrs) {
65         super(context, attrs);
66         mFastOutLinearInInterpolator = AnimationUtils.loadInterpolator(context,
67                 android.R.interpolator.fast_out_linear_in);
68     }
69 
70     @Override
onMeasure(int widthMeasureSpec, int heightMeasureSpec)71     protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
72         super.onMeasure(widthMeasureSpec, heightMeasureSpec);
73     }
74 
75     @Override
onFinishInflate()76     protected void onFinishInflate() {
77         super.onFinishInflate();
78 
79         mSelectedContainer = (ViewGroup) findViewById(R.id.selected_container);
80         mSelectedContainer.setOnClickListener(this);
81         mSelectedLabel = (TextView) findViewById(R.id.selected_label);
82         mSelectedLabel.addOnLayoutChangeListener(mLayoutChangeListener);
83         mRippleView = findViewById(R.id.ripple_view);
84         mLaunchHint = findViewById(R.id.launch_hint);
85         mLaunchHint.addOnLayoutChangeListener(mLayoutChangeListener);
86     }
87 
88     @Override
onWindowVisibilityChanged(int visibility)89     protected void onWindowVisibilityChanged(int visibility) {
90         super.onWindowVisibilityChanged(visibility);
91         if (visibility == View.VISIBLE) {
92             setupAssistActions();
93         }
94     }
95 
96     /**
97      * Called by the activity before a touch event is dispatched to the view hierarchy.
98      */
onPreTouchEvent(MotionEvent event)99     public void onPreTouchEvent(MotionEvent event) {
100         mPendingTouchEvent = event;
101     }
102 
103     @Override
dispatchTouchEvent(MotionEvent event)104     public boolean dispatchTouchEvent(MotionEvent event) {
105         boolean handled = super.dispatchTouchEvent(event);
106         if (mPendingTouchEvent == event && handled) {
107             mPendingTouchEvent = null;
108         }
109         return handled;
110     }
111 
112     /**
113      * Called by the activity after a touch event is dispatched to the view hierarchy.
114      */
onPostTouchEvent(MotionEvent event)115     public void onPostTouchEvent(MotionEvent event) {
116         // Hide the confirmation button if a touch event was delivered to the activity but not to
117         // this view.
118         if (mPendingTouchEvent != null) {
119             hideTheButton();
120         }
121         mPendingTouchEvent = null;
122     }
123 
setupAssistActions()124     private void setupAssistActions() {
125         int[] buttonIds = new int[] {R.id.action1, R.id.action2, R.id.action3};
126 
127         List<ResolveInfo> infos;
128 
129         if (TelephonyManager.EMERGENCY_ASSISTANCE_ENABLED) {
130             infos = EmergencyAssistanceHelper.resolveAssistPackageAndQueryActivities(getContext());
131         } else {
132             infos = null;
133         }
134 
135         for (int i = 0; i < 3; i++) {
136             Button button = (Button) findViewById(buttonIds[i]);
137             boolean visible = false;
138 
139             button.setOnClickListener(this);
140 
141             if (infos != null && infos.size() > i && infos.get(i) != null) {
142                 ResolveInfo info = infos.get(i);
143                 ComponentName name = EmergencyAssistanceHelper.getComponentName(info);
144 
145                 button.setTag(R.id.tag_intent,
146                         new Intent(EmergencyAssistanceHelper.getIntentAction())
147                                 .setComponent(name));
148                 button.setText(info.loadLabel(getContext().getPackageManager()));
149                 visible = true;
150             }
151 
152             button.setVisibility(visible ? View.VISIBLE : View.GONE);
153         }
154     }
155 
156     @Override
onClick(View v)157     public void onClick(View v) {
158         Intent intent = (Intent) v.getTag(R.id.tag_intent);
159 
160         if (v.getId() == R.id.action1 || v.getId() == R.id.action2 || v.getId() == R.id.action3) {
161             AccessibilityManager accessibilityMgr =
162                     (AccessibilityManager) getContext().getSystemService(
163                             Context.ACCESSIBILITY_SERVICE);
164             if (accessibilityMgr.isTouchExplorationEnabled()) {
165                 getContext().startActivity(intent);
166             } else {
167                 revealTheButton(v);
168             }
169         } else if (v.getId() == R.id.selected_container) {
170             if (!mHiding) {
171                 getContext().startActivity(intent);
172             }
173         }
174     }
175 
revealTheButton(View v)176     private void revealTheButton(View v) {
177         CharSequence buttonText = ((Button) v).getText();
178         mSelectedLabel.setText(buttonText);
179         mSelectedLabel.setAutoSizeTextTypeWithDefaults(TextView.AUTO_SIZE_TEXT_TYPE_UNIFORM);
180 
181         // In order to trigger OnLayoutChangeListener for reset default minimum font size.
182         mSelectedLabel.requestLayout();
183         mLaunchHint.requestLayout();
184 
185         mSelectedContainer.setVisibility(VISIBLE);
186         int centerX = v.getLeft() + v.getWidth() / 2;
187         int centerY = v.getTop() + v.getHeight() / 2;
188         Animator reveal = ViewAnimationUtils.createCircularReveal(
189                 mSelectedContainer,
190                 centerX,
191                 centerY,
192                 0,
193                 Math.max(centerX, mSelectedContainer.getWidth() - centerX)
194                         + Math.max(centerY, mSelectedContainer.getHeight() - centerY));
195         reveal.start();
196 
197         animateHintText(mSelectedLabel, v, reveal);
198         animateHintText(mLaunchHint, v, reveal);
199 
200         mSelectedContainer.setTag(R.id.tag_intent, v.getTag(R.id.tag_intent));
201         mLastRevealed = v;
202         postDelayed(mHideRunnable, HIDE_DELAY);
203         postDelayed(mRippleRunnable, RIPPLE_PAUSE / 2);
204 
205         // Transfer focus from the originally clicked button to the expanded button.
206         mSelectedContainer.requestFocus();
207     }
208 
209 
210     private final OnLayoutChangeListener mLayoutChangeListener = new OnLayoutChangeListener() {
211         @Override
212         public void onLayoutChange(View v, int left, int top, int right, int bottom,
213                 int oldLeft,
214                 int oldTop, int oldRight, int oldBottom) {
215             decreaseAutoSizeMinTextSize(v);
216         }
217     };
218 
219     /**
220      * Prevent some localization string will be truncated if there is low resolution screen
221      * or font size and display size of setting is largest.
222      */
decreaseAutoSizeMinTextSize(View selectedView)223     private void decreaseAutoSizeMinTextSize(View selectedView) {
224         if (selectedView != null) {
225             if (selectedView instanceof TextView) {
226                 TextView textView = (TextView) selectedView;
227                 textView.setEllipsize(TextUtils.TruncateAt.END);
228 
229                 // The textView layout will be null due to it's property is hiding when
230                 // initialization.
231                 Layout layout = textView.getLayout();
232                 if (layout != null) {
233                     if (layout.getEllipsisCount(textView.getMaxLines() - 1) > 0) {
234                         textView.setAutoSizeTextTypeUniformWithConfiguration(
235                                 8,
236                                 textView.getAutoSizeMaxTextSize(),
237                                 textView.getAutoSizeStepGranularity(),
238                                 TypedValue.COMPLEX_UNIT_SP);
239                         textView.setGravity(Gravity.CENTER);
240                     }
241                 }
242             }
243         }
244     }
245 
animateHintText(View selectedView, View v, Animator reveal)246     private void animateHintText(View selectedView, View v, Animator reveal) {
247         selectedView.setTranslationX(
248                 (v.getLeft() + v.getWidth() / 2 - mSelectedContainer.getWidth() / 2) / 5);
249         selectedView.animate()
250                 .setDuration(reveal.getDuration() / 3)
251                 .setStartDelay(reveal.getDuration() / 5)
252                 .translationX(0)
253                 .setInterpolator(mFastOutLinearInInterpolator)
254                 .start();
255     }
256 
hideTheButton()257     private void hideTheButton() {
258         if (mHiding || mSelectedContainer.getVisibility() != VISIBLE) {
259             return;
260         }
261 
262         mHiding = true;
263 
264         removeCallbacks(mHideRunnable);
265 
266         View v = mLastRevealed;
267         int centerX = v.getLeft() + v.getWidth() / 2;
268         int centerY = v.getTop() + v.getHeight() / 2;
269         Animator reveal = ViewAnimationUtils.createCircularReveal(
270                 mSelectedContainer,
271                 centerX,
272                 centerY,
273                 Math.max(centerX, mSelectedContainer.getWidth() - centerX)
274                         + Math.max(centerY, mSelectedContainer.getHeight() - centerY),
275                 0);
276         reveal.addListener(new AnimatorListenerAdapter() {
277             @Override
278             public void onAnimationEnd(Animator animation) {
279                 mSelectedContainer.setVisibility(INVISIBLE);
280                 removeCallbacks(mRippleRunnable);
281                 mHiding = false;
282             }
283         });
284         reveal.start();
285 
286         // Transfer focus back to the originally clicked button.
287         if (mSelectedContainer.isFocused()) {
288             v.requestFocus();
289         }
290     }
291 
startRipple()292     private void startRipple() {
293         final View ripple = mRippleView;
294         ripple.animate().cancel();
295         ripple.setVisibility(VISIBLE);
296         Animator reveal = ViewAnimationUtils.createCircularReveal(
297                 ripple,
298                 ripple.getLeft() + ripple.getWidth() / 2,
299                 ripple.getTop() + ripple.getHeight() / 2,
300                 0,
301                 ripple.getWidth() / 2);
302         reveal.setDuration(RIPPLE_DURATION);
303         reveal.start();
304 
305         ripple.setAlpha(0);
306         ripple.animate().alpha(1).setDuration(RIPPLE_DURATION / 2)
307                 .withEndAction(new Runnable() {
308             @Override
309             public void run() {
310                 ripple.animate().alpha(0).setDuration(RIPPLE_DURATION / 2)
311                         .withEndAction(new Runnable() {
312                             @Override
313                             public void run() {
314                                 ripple.setVisibility(INVISIBLE);
315                                 postDelayed(mRippleRunnable, RIPPLE_PAUSE);
316                             }
317                         }).start();
318             }
319         }).start();
320     }
321 
322     private final Runnable mHideRunnable = new Runnable() {
323         @Override
324         public void run() {
325             if (!isAttachedToWindow()) return;
326             hideTheButton();
327         }
328     };
329 
330     private final Runnable mRippleRunnable = new Runnable() {
331         @Override
332         public void run() {
333             if (!isAttachedToWindow()) return;
334             startRipple();
335         }
336     };
337 }
338