ImmersiveModeConfirmation.java revision b10e33ff804a831c71be9303146cea892b9aeb5d 
1/*
2 * Copyright (C) 2013 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.server.policy;
18
19import android.animation.ArgbEvaluator;
20import android.animation.ValueAnimator;
21import android.app.ActivityManager;
22import android.content.BroadcastReceiver;
23import android.content.Context;
24import android.content.Intent;
25import android.content.IntentFilter;
26import android.graphics.PixelFormat;
27import android.graphics.drawable.ColorDrawable;
28import android.os.Handler;
29import android.os.Message;
30import android.os.UserHandle;
31import android.provider.Settings;
32import android.util.DisplayMetrics;
33import android.util.Slog;
34import android.util.SparseBooleanArray;
35import android.view.Gravity;
36import android.view.MotionEvent;
37import android.view.View;
38import android.view.ViewGroup;
39import android.view.WindowManager;
40import android.view.animation.Animation;
41import android.view.animation.AnimationUtils;
42import android.view.animation.DecelerateInterpolator;
43import android.widget.Button;
44import android.widget.FrameLayout;
45
46import com.android.internal.R;
47
48/**
49 *  Helper to manage showing/hiding a confirmation prompt when the navigation bar is hidden
50 *  entering immersive mode.
51 */
52public class ImmersiveModeConfirmation {
53    private static final String TAG = "ImmersiveModeConfirmation";
54    private static final boolean DEBUG = false;
55    private static final boolean DEBUG_SHOW_EVERY_TIME = false; // super annoying, use with caution
56    private static final String CONFIRMED = "confirmed";
57
58    private final Context mContext;
59    private final H mHandler;
60    private final long mShowDelayMs;
61    private final long mPanicThresholdMs;
62    private final SparseBooleanArray mUserPanicResets = new SparseBooleanArray();
63
64    private boolean mConfirmed;
65    private ClingWindowView mClingWindow;
66    private long mPanicTime;
67    private WindowManager mWindowManager;
68    private int mCurrentUserId;
69
70    public ImmersiveModeConfirmation(Context context) {
71        mContext = context;
72        mHandler = new H();
73        mShowDelayMs = getNavBarExitDuration() * 3;
74        mPanicThresholdMs = context.getResources()
75                .getInteger(R.integer.config_immersive_mode_confirmation_panic);
76        mWindowManager = (WindowManager)
77                mContext.getSystemService(Context.WINDOW_SERVICE);
78    }
79
80    private long getNavBarExitDuration() {
81        Animation exit = AnimationUtils.loadAnimation(mContext, R.anim.dock_bottom_exit);
82        return exit != null ? exit.getDuration() : 0;
83    }
84
85    public void loadSetting(int currentUserId) {
86        mConfirmed = false;
87        mCurrentUserId = currentUserId;
88        if (DEBUG) Slog.d(TAG, String.format("loadSetting() mCurrentUserId=%d resetForPanic=%s",
89                mCurrentUserId, mUserPanicResets.get(mCurrentUserId, false)));
90        String value = null;
91        try {
92            value = Settings.Secure.getStringForUser(mContext.getContentResolver(),
93                    Settings.Secure.IMMERSIVE_MODE_CONFIRMATIONS,
94                    UserHandle.USER_CURRENT);
95            mConfirmed = CONFIRMED.equals(value);
96            if (DEBUG) Slog.d(TAG, "Loaded mConfirmed=" + mConfirmed);
97        } catch (Throwable t) {
98            Slog.w(TAG, "Error loading confirmations, value=" + value, t);
99        }
100    }
101
102    private void saveSetting() {
103        if (DEBUG) Slog.d(TAG, "saveSetting()");
104        try {
105            final String value = mConfirmed ? CONFIRMED : null;
106            Settings.Secure.putStringForUser(mContext.getContentResolver(),
107                    Settings.Secure.IMMERSIVE_MODE_CONFIRMATIONS,
108                    value,
109                    UserHandle.USER_CURRENT);
110            if (DEBUG) Slog.d(TAG, "Saved value=" + value);
111        } catch (Throwable t) {
112            Slog.w(TAG, "Error saving confirmations, mConfirmed=" + mConfirmed, t);
113        }
114    }
115
116    public void immersiveModeChanged(String pkg, boolean isImmersiveMode,
117            boolean userSetupComplete) {
118        mHandler.removeMessages(H.SHOW);
119        if (isImmersiveMode) {
120            final boolean disabled = PolicyControl.disableImmersiveConfirmation(pkg);
121            if (DEBUG) Slog.d(TAG, String.format("immersiveModeChanged() disabled=%s mConfirmed=%s",
122                    disabled, mConfirmed));
123            if (!disabled && (DEBUG_SHOW_EVERY_TIME || !mConfirmed) && userSetupComplete) {
124                mHandler.sendEmptyMessageDelayed(H.SHOW, mShowDelayMs);
125            }
126        } else {
127            mHandler.sendEmptyMessage(H.HIDE);
128        }
129    }
130
131    public boolean onPowerKeyDown(boolean isScreenOn, long time, boolean inImmersiveMode) {
132        if (!isScreenOn && (time - mPanicTime < mPanicThresholdMs)) {
133            // turning the screen back on within the panic threshold
134            mHandler.sendEmptyMessage(H.PANIC);
135            return mClingWindow == null;
136        }
137        if (isScreenOn && inImmersiveMode) {
138            // turning the screen off, remember if we were in immersive mode
139            mPanicTime = time;
140        } else {
141            mPanicTime = 0;
142        }
143        return false;
144    }
145
146    public void confirmCurrentPrompt() {
147        if (mClingWindow != null) {
148            if (DEBUG) Slog.d(TAG, "confirmCurrentPrompt()");
149            mHandler.post(mConfirm);
150        }
151    }
152
153    private void handlePanic() {
154        if (DEBUG) Slog.d(TAG, "handlePanic()");
155        if (mUserPanicResets.get(mCurrentUserId, false)) return;  // already reset for panic
156        mUserPanicResets.put(mCurrentUserId, true);
157        mConfirmed = false;
158        saveSetting();
159    }
160
161    private void handleHide() {
162        if (mClingWindow != null) {
163            if (DEBUG) Slog.d(TAG, "Hiding immersive mode confirmation");
164            mWindowManager.removeView(mClingWindow);
165            mClingWindow = null;
166        }
167    }
168
169    public WindowManager.LayoutParams getClingWindowLayoutParams() {
170        final WindowManager.LayoutParams lp = new WindowManager.LayoutParams(
171                ViewGroup.LayoutParams.MATCH_PARENT,
172                ViewGroup.LayoutParams.MATCH_PARENT,
173                WindowManager.LayoutParams.TYPE_TOAST,
174                0
175                        | WindowManager.LayoutParams.FLAG_LAYOUT_IN_SCREEN
176                        | WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE
177                        | WindowManager.LayoutParams.FLAG_HARDWARE_ACCELERATED
178                ,
179                PixelFormat.TRANSLUCENT);
180        lp.privateFlags |= WindowManager.LayoutParams.PRIVATE_FLAG_SHOW_FOR_ALL_USERS;
181        lp.setTitle("ImmersiveModeConfirmation");
182        lp.windowAnimations = com.android.internal.R.style.Animation_RecentApplications;
183        lp.gravity = Gravity.FILL;
184        return lp;
185    }
186
187    public FrameLayout.LayoutParams getBubbleLayoutParams() {
188        return new FrameLayout.LayoutParams(
189                mContext.getResources().getDimensionPixelSize(
190                        R.dimen.immersive_mode_cling_width),
191                ViewGroup.LayoutParams.WRAP_CONTENT,
192                Gravity.CENTER_HORIZONTAL | Gravity.TOP);
193    }
194
195    private class ClingWindowView extends FrameLayout {
196        private static final int BGCOLOR = 0x80000000;
197        private static final int OFFSET_DP = 48;
198
199        private final Runnable mConfirm;
200        private final ColorDrawable mColor = new ColorDrawable(0);
201        private ValueAnimator mColorAnim;
202        private ViewGroup mClingLayout;
203
204        private Runnable mUpdateLayoutRunnable = new Runnable() {
205            @Override
206            public void run() {
207                if (mClingLayout != null && mClingLayout.getParent() != null) {
208                    mClingLayout.setLayoutParams(getBubbleLayoutParams());
209                }
210            }
211        };
212
213        private BroadcastReceiver mReceiver = new BroadcastReceiver() {
214            @Override
215            public void onReceive(Context context, Intent intent) {
216                if (intent.getAction().equals(Intent.ACTION_CONFIGURATION_CHANGED)) {
217                    post(mUpdateLayoutRunnable);
218                }
219            }
220        };
221
222        public ClingWindowView(Context context, Runnable confirm) {
223            super(context);
224            mConfirm = confirm;
225            setClickable(true);
226            setBackground(mColor);
227        }
228
229        @Override
230        public void onAttachedToWindow() {
231            super.onAttachedToWindow();
232
233            DisplayMetrics metrics = new DisplayMetrics();
234            mWindowManager.getDefaultDisplay().getMetrics(metrics);
235            float density = metrics.density;
236
237            // create the confirmation cling
238            mClingLayout = (ViewGroup)
239                    View.inflate(getContext(), R.layout.immersive_mode_cling, null);
240
241            final Button ok = (Button) mClingLayout.findViewById(R.id.ok);
242            ok.setOnClickListener(new OnClickListener() {
243                @Override
244                public void onClick(View v) {
245                    mConfirm.run();
246                }
247            });
248            addView(mClingLayout, getBubbleLayoutParams());
249
250            if (ActivityManager.isHighEndGfx()) {
251                final View bubble = mClingLayout.findViewById(R.id.text);
252                bubble.setAlpha(0f);
253                bubble.setTranslationY(-OFFSET_DP*density);
254                bubble.animate()
255                        .alpha(1f)
256                        .translationY(0)
257                        .setDuration(300)
258                        .setInterpolator(new DecelerateInterpolator())
259                        .start();
260
261                ok.setAlpha(0f);
262                ok.setTranslationY(-OFFSET_DP*density);
263                ok.animate().alpha(1f)
264                        .translationY(0)
265                        .setDuration(300)
266                        .setStartDelay(200)
267                        .setInterpolator(new DecelerateInterpolator())
268                        .start();
269
270                mColorAnim = ValueAnimator.ofObject(new ArgbEvaluator(), 0, BGCOLOR);
271                mColorAnim.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
272                    @Override
273                    public void onAnimationUpdate(ValueAnimator animation) {
274                        final int c = (Integer) animation.getAnimatedValue();
275                        mColor.setColor(c);
276                    }
277                });
278                mColorAnim.setDuration(1000);
279                mColorAnim.start();
280            } else {
281                mColor.setColor(BGCOLOR);
282            }
283
284            mContext.registerReceiver(mReceiver, new IntentFilter(Intent.ACTION_CONFIGURATION_CHANGED));
285        }
286
287        @Override
288        public void onDetachedFromWindow() {
289            mContext.unregisterReceiver(mReceiver);
290        }
291
292        @Override
293        public boolean onTouchEvent(MotionEvent motion) {
294            return true;
295        }
296    }
297
298    private void handleShow() {
299        if (DEBUG) Slog.d(TAG, "Showing immersive mode confirmation");
300
301        mClingWindow = new ClingWindowView(mContext, mConfirm);
302
303        // we will be hiding the nav bar, so layout as if it's already hidden
304        mClingWindow.setSystemUiVisibility(
305                View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION
306              | View.SYSTEM_UI_FLAG_LAYOUT_STABLE);
307
308        // show the confirmation
309        WindowManager.LayoutParams lp = getClingWindowLayoutParams();
310        mWindowManager.addView(mClingWindow, lp);
311    }
312
313    private final Runnable mConfirm = new Runnable() {
314        @Override
315        public void run() {
316            if (DEBUG) Slog.d(TAG, "mConfirm.run()");
317            if (!mConfirmed) {
318                mConfirmed = true;
319                saveSetting();
320            }
321            handleHide();
322        }
323    };
324
325    private final class H extends Handler {
326        private static final int SHOW = 1;
327        private static final int HIDE = 2;
328        private static final int PANIC = 3;
329
330        @Override
331        public void handleMessage(Message msg) {
332            switch(msg.what) {
333                case SHOW:
334                    handleShow();
335                    break;
336                case HIDE:
337                    handleHide();
338                    break;
339                case PANIC:
340                    handlePanic();
341                    break;
342            }
343        }
344    }
345}
346