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      1 /*
      2  * Copyright (C) 2011 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.systemui.statusbar.policy;
     18 
     19 import android.content.Context;
     20 import android.content.res.Configuration;
     21 import android.content.res.Resources;
     22 import android.database.ContentObserver;
     23 import android.graphics.Outline;
     24 import android.graphics.Rect;
     25 import android.os.SystemClock;
     26 import android.provider.Settings;
     27 import android.util.ArrayMap;
     28 import android.util.AttributeSet;
     29 import android.util.Log;
     30 import android.view.MotionEvent;
     31 import android.view.View;
     32 import android.view.ViewConfiguration;
     33 import android.view.ViewGroup;
     34 import android.view.ViewOutlineProvider;
     35 import android.view.ViewTreeObserver;
     36 import android.view.accessibility.AccessibilityEvent;
     37 import android.widget.FrameLayout;
     38 
     39 import com.android.systemui.ExpandHelper;
     40 import com.android.systemui.Gefingerpoken;
     41 import com.android.systemui.R;
     42 import com.android.systemui.SwipeHelper;
     43 import com.android.systemui.statusbar.ExpandableView;
     44 import com.android.systemui.statusbar.NotificationData;
     45 import com.android.systemui.statusbar.phone.PhoneStatusBar;
     46 
     47 import java.util.ArrayList;
     48 
     49 public class HeadsUpNotificationView extends FrameLayout implements SwipeHelper.Callback, ExpandHelper.Callback,
     50         ViewTreeObserver.OnComputeInternalInsetsListener {
     51     private static final String TAG = "HeadsUpNotificationView";
     52     private static final boolean DEBUG = false;
     53     private static final boolean SPEW = DEBUG;
     54     private static final String SETTING_HEADS_UP_SNOOZE_LENGTH_MS = "heads_up_snooze_length_ms";
     55 
     56     Rect mTmpRect = new Rect();
     57     int[] mTmpTwoArray = new int[2];
     58 
     59     private final int mTouchSensitivityDelay;
     60     private final float mMaxAlpha = 1f;
     61     private final ArrayMap<String, Long> mSnoozedPackages;
     62     private final int mDefaultSnoozeLengthMs;
     63 
     64     private SwipeHelper mSwipeHelper;
     65     private EdgeSwipeHelper mEdgeSwipeHelper;
     66 
     67     private PhoneStatusBar mBar;
     68 
     69     private long mStartTouchTime;
     70     private ViewGroup mContentHolder;
     71     private int mSnoozeLengthMs;
     72     private ContentObserver mSettingsObserver;
     73 
     74     private NotificationData.Entry mHeadsUp;
     75     private int mUser;
     76     private String mMostRecentPackageName;
     77 
     78     public HeadsUpNotificationView(Context context, AttributeSet attrs) {
     79         this(context, attrs, 0);
     80     }
     81 
     82     public HeadsUpNotificationView(Context context, AttributeSet attrs, int defStyle) {
     83         super(context, attrs, defStyle);
     84         Resources resources = context.getResources();
     85         mTouchSensitivityDelay = resources.getInteger(R.integer.heads_up_sensitivity_delay);
     86         if (DEBUG) Log.v(TAG, "create() " + mTouchSensitivityDelay);
     87         mSnoozedPackages = new ArrayMap<>();
     88         mDefaultSnoozeLengthMs = resources.getInteger(R.integer.heads_up_default_snooze_length_ms);
     89         mSnoozeLengthMs = mDefaultSnoozeLengthMs;
     90     }
     91 
     92     public void updateResources() {
     93         if (mContentHolder != null) {
     94             final LayoutParams lp = (LayoutParams) mContentHolder.getLayoutParams();
     95             lp.width = getResources().getDimensionPixelSize(R.dimen.notification_panel_width);
     96             lp.gravity = getResources().getInteger(R.integer.notification_panel_layout_gravity);
     97             mContentHolder.setLayoutParams(lp);
     98         }
     99     }
    100 
    101     public void setBar(PhoneStatusBar bar) {
    102         mBar = bar;
    103     }
    104 
    105     public ViewGroup getHolder() {
    106         return mContentHolder;
    107     }
    108 
    109     public boolean showNotification(NotificationData.Entry headsUp) {
    110         if (mHeadsUp != null && headsUp != null && !mHeadsUp.key.equals(headsUp.key)) {
    111             // bump any previous heads up back to the shade
    112             release();
    113         }
    114 
    115         mHeadsUp = headsUp;
    116         if (mContentHolder != null) {
    117             mContentHolder.removeAllViews();
    118         }
    119 
    120         if (mHeadsUp != null) {
    121             mMostRecentPackageName = mHeadsUp.notification.getPackageName();
    122             mHeadsUp.row.setSystemExpanded(true);
    123             mHeadsUp.row.setSensitive(false);
    124             mHeadsUp.row.setHeadsUp(true);
    125             mHeadsUp.row.setHideSensitive(
    126                     false, false /* animated */, 0 /* delay */, 0 /* duration */);
    127             if (mContentHolder == null) {
    128                 // too soon!
    129                 return false;
    130             }
    131             mContentHolder.setX(0);
    132             mContentHolder.setVisibility(View.VISIBLE);
    133             mContentHolder.setAlpha(mMaxAlpha);
    134             mContentHolder.addView(mHeadsUp.row);
    135             sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED);
    136 
    137             mSwipeHelper.snapChild(mContentHolder, 1f);
    138             mStartTouchTime = SystemClock.elapsedRealtime() + mTouchSensitivityDelay;
    139 
    140             mHeadsUp.setInterruption();
    141 
    142             // 2. Animate mHeadsUpNotificationView in
    143             mBar.scheduleHeadsUpOpen();
    144 
    145             // 3. Set alarm to age the notification off
    146             mBar.resetHeadsUpDecayTimer();
    147         }
    148         return true;
    149     }
    150 
    151     @Override
    152     protected void onVisibilityChanged(View changedView, int visibility) {
    153         super.onVisibilityChanged(changedView, visibility);
    154         if (changedView.getVisibility() == VISIBLE) {
    155             sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED);
    156         }
    157     }
    158 
    159     public boolean isShowing(String key) {
    160         return mHeadsUp != null && mHeadsUp.key.equals(key);
    161     }
    162 
    163     /** Discard the Heads Up notification. */
    164     public void clear() {
    165         mHeadsUp = null;
    166         mBar.scheduleHeadsUpClose();
    167     }
    168 
    169     /** Respond to dismissal of the Heads Up window. */
    170     public void dismiss() {
    171         if (mHeadsUp == null) return;
    172         if (mHeadsUp.notification.isClearable()) {
    173             mBar.onNotificationClear(mHeadsUp.notification);
    174         } else {
    175             release();
    176         }
    177         mHeadsUp = null;
    178         mBar.scheduleHeadsUpClose();
    179     }
    180 
    181     /** Push any current Heads Up notification down into the shade. */
    182     public void release() {
    183         if (mHeadsUp != null) {
    184             mBar.displayNotificationFromHeadsUp(mHeadsUp.notification);
    185         }
    186         mHeadsUp = null;
    187     }
    188 
    189     public boolean isSnoozed(String packageName) {
    190         final String key = snoozeKey(packageName, mUser);
    191         Long snoozedUntil = mSnoozedPackages.get(key);
    192         if (snoozedUntil != null) {
    193             if (snoozedUntil > SystemClock.elapsedRealtime()) {
    194                 if (DEBUG) Log.v(TAG, key + " snoozed");
    195                 return true;
    196             }
    197             mSnoozedPackages.remove(packageName);
    198         }
    199         return false;
    200     }
    201 
    202     private void snooze() {
    203         if (mMostRecentPackageName != null) {
    204             mSnoozedPackages.put(snoozeKey(mMostRecentPackageName, mUser),
    205                     SystemClock.elapsedRealtime() + mSnoozeLengthMs);
    206         }
    207         releaseAndClose();
    208     }
    209 
    210     private static String snoozeKey(String packageName, int user) {
    211         return user + "," + packageName;
    212     }
    213 
    214     public void releaseAndClose() {
    215         release();
    216         mBar.scheduleHeadsUpClose();
    217     }
    218 
    219     public NotificationData.Entry getEntry() {
    220         return mHeadsUp;
    221     }
    222 
    223     public boolean isClearable() {
    224         return mHeadsUp == null || mHeadsUp.notification.isClearable();
    225     }
    226 
    227     // ViewGroup methods
    228 
    229     private static final ViewOutlineProvider CONTENT_HOLDER_OUTLINE_PROVIDER =
    230             new ViewOutlineProvider() {
    231         @Override
    232         public void getOutline(View view, Outline outline) {
    233             int outlineLeft = view.getPaddingLeft();
    234             int outlineTop = view.getPaddingTop();
    235 
    236             // Apply padding to shadow.
    237             outline.setRect(outlineLeft, outlineTop,
    238                     view.getWidth() - outlineLeft - view.getPaddingRight(),
    239                     view.getHeight() - outlineTop - view.getPaddingBottom());
    240         }
    241     };
    242 
    243     @Override
    244     public void onAttachedToWindow() {
    245         final ViewConfiguration viewConfiguration = ViewConfiguration.get(getContext());
    246         float touchSlop = viewConfiguration.getScaledTouchSlop();
    247         mSwipeHelper = new SwipeHelper(SwipeHelper.X, this, getContext());
    248         mSwipeHelper.setMaxSwipeProgress(mMaxAlpha);
    249         mEdgeSwipeHelper = new EdgeSwipeHelper(touchSlop);
    250 
    251         int minHeight = getResources().getDimensionPixelSize(R.dimen.notification_min_height);
    252         int maxHeight = getResources().getDimensionPixelSize(R.dimen.notification_max_height);
    253 
    254         mContentHolder = (ViewGroup) findViewById(R.id.content_holder);
    255         mContentHolder.setOutlineProvider(CONTENT_HOLDER_OUTLINE_PROVIDER);
    256 
    257         mSnoozeLengthMs = Settings.Global.getInt(mContext.getContentResolver(),
    258                 SETTING_HEADS_UP_SNOOZE_LENGTH_MS, mDefaultSnoozeLengthMs);
    259         mSettingsObserver = new ContentObserver(getHandler()) {
    260             @Override
    261             public void onChange(boolean selfChange) {
    262                 final int packageSnoozeLengthMs = Settings.Global.getInt(
    263                         mContext.getContentResolver(), SETTING_HEADS_UP_SNOOZE_LENGTH_MS, -1);
    264                 if (packageSnoozeLengthMs > -1 && packageSnoozeLengthMs != mSnoozeLengthMs) {
    265                     mSnoozeLengthMs = packageSnoozeLengthMs;
    266                     if (DEBUG) Log.v(TAG, "mSnoozeLengthMs = " + mSnoozeLengthMs);
    267                 }
    268             }
    269         };
    270         mContext.getContentResolver().registerContentObserver(
    271                 Settings.Global.getUriFor(SETTING_HEADS_UP_SNOOZE_LENGTH_MS), false,
    272                 mSettingsObserver);
    273         if (DEBUG) Log.v(TAG, "mSnoozeLengthMs = " + mSnoozeLengthMs);
    274 
    275         if (mHeadsUp != null) {
    276             // whoops, we're on already!
    277             showNotification(mHeadsUp);
    278         }
    279 
    280         getViewTreeObserver().addOnComputeInternalInsetsListener(this);
    281     }
    282 
    283     @Override
    284     protected void onDetachedFromWindow() {
    285         mContext.getContentResolver().unregisterContentObserver(mSettingsObserver);
    286     }
    287 
    288     @Override
    289     public boolean onInterceptTouchEvent(MotionEvent ev) {
    290         if (DEBUG) Log.v(TAG, "onInterceptTouchEvent()");
    291         if (SystemClock.elapsedRealtime() < mStartTouchTime) {
    292             return true;
    293         }
    294         return mEdgeSwipeHelper.onInterceptTouchEvent(ev)
    295                 || mSwipeHelper.onInterceptTouchEvent(ev)
    296                 || super.onInterceptTouchEvent(ev);
    297     }
    298 
    299     // View methods
    300 
    301     @Override
    302     public void onDraw(android.graphics.Canvas c) {
    303         super.onDraw(c);
    304         if (DEBUG) {
    305             //Log.d(TAG, "onDraw: canvas height: " + c.getHeight() + "px; measured height: "
    306             //        + getMeasuredHeight() + "px");
    307             c.save();
    308             c.clipRect(6, 6, c.getWidth() - 6, getMeasuredHeight() - 6,
    309                     android.graphics.Region.Op.DIFFERENCE);
    310             c.drawColor(0xFFcc00cc);
    311             c.restore();
    312         }
    313     }
    314 
    315     @Override
    316     public boolean onTouchEvent(MotionEvent ev) {
    317         if (SystemClock.elapsedRealtime() < mStartTouchTime) {
    318             return false;
    319         }
    320         mBar.resetHeadsUpDecayTimer();
    321         return mEdgeSwipeHelper.onTouchEvent(ev)
    322                 || mSwipeHelper.onTouchEvent(ev)
    323                 || super.onTouchEvent(ev);
    324     }
    325 
    326     @Override
    327     protected void onConfigurationChanged(Configuration newConfig) {
    328         super.onConfigurationChanged(newConfig);
    329         float densityScale = getResources().getDisplayMetrics().density;
    330         mSwipeHelper.setDensityScale(densityScale);
    331         float pagingTouchSlop = ViewConfiguration.get(getContext()).getScaledPagingTouchSlop();
    332         mSwipeHelper.setPagingTouchSlop(pagingTouchSlop);
    333     }
    334 
    335     // ExpandHelper.Callback methods
    336 
    337     @Override
    338     public ExpandableView getChildAtRawPosition(float x, float y) {
    339         return getChildAtPosition(x, y);
    340     }
    341 
    342     @Override
    343     public ExpandableView getChildAtPosition(float x, float y) {
    344         return mHeadsUp == null ? null : mHeadsUp.row;
    345     }
    346 
    347     @Override
    348     public boolean canChildBeExpanded(View v) {
    349         return mHeadsUp != null && mHeadsUp.row == v && mHeadsUp.row.isExpandable();
    350     }
    351 
    352     @Override
    353     public void setUserExpandedChild(View v, boolean userExpanded) {
    354         if (mHeadsUp != null && mHeadsUp.row == v) {
    355             mHeadsUp.row.setUserExpanded(userExpanded);
    356         }
    357     }
    358 
    359     @Override
    360     public void setUserLockedChild(View v, boolean userLocked) {
    361         if (mHeadsUp != null && mHeadsUp.row == v) {
    362             mHeadsUp.row.setUserLocked(userLocked);
    363         }
    364     }
    365 
    366     @Override
    367     public void expansionStateChanged(boolean isExpanding) {
    368 
    369     }
    370 
    371     // SwipeHelper.Callback methods
    372 
    373     @Override
    374     public boolean canChildBeDismissed(View v) {
    375         return true;
    376     }
    377 
    378     @Override
    379     public boolean isAntiFalsingNeeded() {
    380         return false;
    381     }
    382 
    383     @Override
    384     public float getFalsingThresholdFactor() {
    385         return 1.0f;
    386     }
    387 
    388     @Override
    389     public void onChildDismissed(View v) {
    390         Log.v(TAG, "User swiped heads up to dismiss");
    391         mBar.onHeadsUpDismissed();
    392     }
    393 
    394     @Override
    395     public void onBeginDrag(View v) {
    396     }
    397 
    398     @Override
    399     public void onDragCancelled(View v) {
    400         mContentHolder.setAlpha(mMaxAlpha); // sometimes this isn't quite reset
    401     }
    402 
    403     @Override
    404     public void onChildSnappedBack(View animView) {
    405     }
    406 
    407     @Override
    408     public boolean updateSwipeProgress(View animView, boolean dismissable, float swipeProgress) {
    409         getBackground().setAlpha((int) (255 * swipeProgress));
    410         return false;
    411     }
    412 
    413     @Override
    414     public View getChildAtPosition(MotionEvent ev) {
    415         return mContentHolder;
    416     }
    417 
    418     @Override
    419     public View getChildContentView(View v) {
    420         return mContentHolder;
    421     }
    422 
    423     @Override
    424     public void onComputeInternalInsets(ViewTreeObserver.InternalInsetsInfo info) {
    425         mContentHolder.getLocationOnScreen(mTmpTwoArray);
    426 
    427         info.setTouchableInsets(ViewTreeObserver.InternalInsetsInfo.TOUCHABLE_INSETS_REGION);
    428         info.touchableRegion.set(mTmpTwoArray[0], mTmpTwoArray[1],
    429                 mTmpTwoArray[0] + mContentHolder.getWidth(),
    430                 mTmpTwoArray[1] + mContentHolder.getHeight());
    431     }
    432 
    433     public void escalate() {
    434         mBar.scheduleHeadsUpEscalation();
    435     }
    436 
    437     public String getKey() {
    438         return mHeadsUp == null ? null : mHeadsUp.notification.getKey();
    439     }
    440 
    441     public void setUser(int user) {
    442         mUser = user;
    443     }
    444 
    445     private class EdgeSwipeHelper implements Gefingerpoken {
    446         private static final boolean DEBUG_EDGE_SWIPE = false;
    447         private final float mTouchSlop;
    448         private boolean mConsuming;
    449         private float mFirstY;
    450         private float mFirstX;
    451 
    452         public EdgeSwipeHelper(float touchSlop) {
    453             mTouchSlop = touchSlop;
    454         }
    455 
    456         @Override
    457         public boolean onInterceptTouchEvent(MotionEvent ev) {
    458             switch (ev.getActionMasked()) {
    459                 case MotionEvent.ACTION_DOWN:
    460                     if (DEBUG_EDGE_SWIPE) Log.d(TAG, "action down " + ev.getY());
    461                     mFirstX = ev.getX();
    462                     mFirstY = ev.getY();
    463                     mConsuming = false;
    464                     break;
    465 
    466                 case MotionEvent.ACTION_MOVE:
    467                     if (DEBUG_EDGE_SWIPE) Log.d(TAG, "action move " + ev.getY());
    468                     final float dY = ev.getY() - mFirstY;
    469                     final float daX = Math.abs(ev.getX() - mFirstX);
    470                     final float daY = Math.abs(dY);
    471                     if (!mConsuming && daX < daY && daY > mTouchSlop) {
    472                         snooze();
    473                         if (dY > 0) {
    474                             if (DEBUG_EDGE_SWIPE) Log.d(TAG, "found an open");
    475                             mBar.animateExpandNotificationsPanel();
    476                         }
    477                         mConsuming = true;
    478                     }
    479                     break;
    480 
    481                 case MotionEvent.ACTION_UP:
    482                 case MotionEvent.ACTION_CANCEL:
    483                     if (DEBUG_EDGE_SWIPE) Log.d(TAG, "action done" );
    484                     mConsuming = false;
    485                     break;
    486             }
    487             return mConsuming;
    488         }
    489 
    490         @Override
    491         public boolean onTouchEvent(MotionEvent ev) {
    492             return mConsuming;
    493         }
    494     }
    495 }
    496