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
17package com.android.systemui.statusbar.policy;
18
19import android.content.Context;
20import android.content.res.Configuration;
21import android.content.res.Resources;
22import android.database.ContentObserver;
23import android.graphics.Outline;
24import android.graphics.Rect;
25import android.os.SystemClock;
26import android.provider.Settings;
27import android.util.ArrayMap;
28import android.util.AttributeSet;
29import android.util.Log;
30import android.view.MotionEvent;
31import android.view.View;
32import android.view.ViewConfiguration;
33import android.view.ViewGroup;
34import android.view.ViewOutlineProvider;
35import android.view.ViewTreeObserver;
36import android.view.accessibility.AccessibilityEvent;
37import android.widget.FrameLayout;
38
39import com.android.systemui.ExpandHelper;
40import com.android.systemui.Gefingerpoken;
41import com.android.systemui.R;
42import com.android.systemui.SwipeHelper;
43import com.android.systemui.statusbar.ExpandableView;
44import com.android.systemui.statusbar.NotificationData;
45import com.android.systemui.statusbar.phone.PhoneStatusBar;
46
47import java.util.ArrayList;
48
49public 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