ImmersiveModeConfirmation.java revision 0513d5abb6f457cda3a279d63ce02a8fdaa8e32a 
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.internal.policy.impl;
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.text.TextUtils;
33import android.util.ArraySet;
34import android.util.DisplayMetrics;
35import android.util.Slog;
36import android.view.Gravity;
37import android.view.MotionEvent;
38import android.view.View;
39import android.view.ViewGroup;
40import android.view.WindowManager;
41import android.view.animation.Animation;
42import android.view.animation.AnimationUtils;
43import android.view.animation.DecelerateInterpolator;
44import android.widget.Button;
45import android.widget.FrameLayout;
46
47import com.android.internal.R;
48
49import java.util.Arrays;
50
51/**
52 *  Helper to manage showing/hiding a confirmation prompt when the navigation bar is hidden
53 *  entering immersive mode.
54 */
55public class ImmersiveModeConfirmation {
56    private static final String TAG = "ImmersiveModeConfirmation";
57    private static final boolean DEBUG = false;
58    private static final boolean DEBUG_SHOW_EVERY_TIME = false; // super annoying, use with caution
59
60    private final Context mContext;
61    private final H mHandler;
62    private final ArraySet<String> mConfirmedPackages = new ArraySet<String>();
63    private final long mShowDelayMs;
64    private final long mPanicThresholdMs;
65
66    private ClingWindowView mClingWindow;
67    private String mLastPackage;
68    private String mPromptPackage;
69    private long mPanicTime;
70    private String mPanicPackage;
71    private WindowManager mWindowManager;
72
73    public ImmersiveModeConfirmation(Context context) {
74        mContext = context;
75        mHandler = new H();
76        mShowDelayMs = getNavBarExitDuration() * 3;
77        mPanicThresholdMs = context.getResources()
78                .getInteger(R.integer.config_immersive_mode_confirmation_panic);
79        mWindowManager = (WindowManager)
80                mContext.getSystemService(Context.WINDOW_SERVICE);
81    }
82
83    private long getNavBarExitDuration() {
84        Animation exit = AnimationUtils.loadAnimation(mContext, R.anim.dock_bottom_exit);
85        return exit != null ? exit.getDuration() : 0;
86    }
87
88    public void loadSetting() {
89        if (DEBUG) Slog.d(TAG, "loadSetting()");
90        mConfirmedPackages.clear();
91        String packages = null;
92        try {
93            packages = Settings.Secure.getStringForUser(mContext.getContentResolver(),
94                    Settings.Secure.IMMERSIVE_MODE_CONFIRMATIONS,
95                    UserHandle.USER_CURRENT);
96            if (packages != null) {
97                mConfirmedPackages.addAll(Arrays.asList(packages.split(",")));
98                if (DEBUG) Slog.d(TAG, "Loaded mConfirmedPackages=" + mConfirmedPackages);
99            }
100        } catch (Throwable t) {
101            Slog.w(TAG, "Error loading confirmations, packages=" + packages, t);
102        }
103    }
104
105    private void saveSetting() {
106        if (DEBUG) Slog.d(TAG, "saveSetting()");
107        try {
108            final String packages = TextUtils.join(",", mConfirmedPackages);
109            Settings.Secure.putStringForUser(mContext.getContentResolver(),
110                    Settings.Secure.IMMERSIVE_MODE_CONFIRMATIONS,
111                    packages,
112                    UserHandle.USER_CURRENT);
113            if (DEBUG) Slog.d(TAG, "Saved packages=" + packages);
114        } catch (Throwable t) {
115            Slog.w(TAG, "Error saving confirmations, mConfirmedPackages=" + mConfirmedPackages, t);
116        }
117    }
118
119    public void immersiveModeChanged(String pkg, boolean isImmersiveMode) {
120        if (pkg == null) {
121            return;
122        }
123        mHandler.removeMessages(H.SHOW);
124        if (isImmersiveMode) {
125            mLastPackage = pkg;
126            if (DEBUG_SHOW_EVERY_TIME || !mConfirmedPackages.contains(pkg)) {
127                mHandler.sendMessageDelayed(mHandler.obtainMessage(H.SHOW, pkg), mShowDelayMs);
128            }
129        } else {
130            mLastPackage = null;
131            mHandler.sendEmptyMessage(H.HIDE);
132        }
133    }
134
135    public void onPowerKeyDown(boolean isScreenOn, long time, boolean inImmersiveMode) {
136        if (mPanicPackage != null && !isScreenOn && (time - mPanicTime < mPanicThresholdMs)) {
137            // turning the screen back on within the panic threshold
138            unconfirmPackage(mPanicPackage);
139        }
140        if (isScreenOn && inImmersiveMode) {
141            // turning the screen off, remember if we were in immersive mode
142            mPanicTime = time;
143            mPanicPackage = mLastPackage;
144        } else {
145            mPanicTime = 0;
146            mPanicPackage = null;
147        }
148    }
149
150    public void confirmCurrentPrompt() {
151        mHandler.post(confirmAction(mPromptPackage));
152    }
153
154    private void unconfirmPackage(String pkg) {
155        if (pkg != null) {
156            if (DEBUG) Slog.d(TAG, "Unconfirming immersive mode confirmation for " + pkg);
157            mConfirmedPackages.remove(pkg);
158            saveSetting();
159        }
160    }
161
162    private void handleHide() {
163        if (mClingWindow != null) {
164            if (DEBUG) Slog.d(TAG, "Hiding immersive mode confirmation for " + mPromptPackage);
165            mWindowManager.removeView(mClingWindow);
166            mClingWindow = null;
167        }
168    }
169
170    public WindowManager.LayoutParams getClingWindowLayoutParams() {
171        final WindowManager.LayoutParams lp = new WindowManager.LayoutParams(
172                ViewGroup.LayoutParams.MATCH_PARENT,
173                ViewGroup.LayoutParams.MATCH_PARENT,
174                WindowManager.LayoutParams.TYPE_TOAST,
175                0
176                        | WindowManager.LayoutParams.FLAG_LAYOUT_IN_SCREEN
177                        | WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE
178                        | WindowManager.LayoutParams.FLAG_HARDWARE_ACCELERATED
179                ,
180                PixelFormat.TRANSLUCENT);
181        lp.privateFlags |= WindowManager.LayoutParams.PRIVATE_FLAG_SHOW_FOR_ALL_USERS;
182        lp.setTitle("ImmersiveModeConfirmation");
183        lp.windowAnimations = com.android.internal.R.style.Animation_RecentApplications;
184        lp.gravity = Gravity.FILL;
185        return lp;
186    }
187
188    public FrameLayout.LayoutParams getBubbleLayoutParams() {
189        return new FrameLayout.LayoutParams(
190                mContext.getResources().getDimensionPixelSize(
191                        R.dimen.immersive_mode_cling_width),
192                ViewGroup.LayoutParams.WRAP_CONTENT,
193                Gravity.CENTER_HORIZONTAL | Gravity.TOP);
194    }
195
196    private class ClingWindowView extends FrameLayout {
197        private static final int BGCOLOR = 0x80000000;
198        private static final int OFFSET_DP = 48;
199
200        private final Runnable mConfirm;
201        private final ColorDrawable mColor = new ColorDrawable(0);
202        private ValueAnimator mColorAnim;
203        private ViewGroup mClingLayout;
204
205        private Runnable mUpdateLayoutRunnable = new Runnable() {
206            @Override
207            public void run() {
208                if (mClingLayout != null && mClingLayout.getParent() != null) {
209                    mClingLayout.setLayoutParams(getBubbleLayoutParams());
210                }
211            }
212        };
213
214        private BroadcastReceiver mReceiver = new BroadcastReceiver() {
215            @Override
216            public void onReceive(Context context, Intent intent) {
217                if (intent.getAction().equals(Intent.ACTION_CONFIGURATION_CHANGED)) {
218                    post(mUpdateLayoutRunnable);
219                }
220            }
221        };
222
223        public ClingWindowView(Context context, Runnable confirm) {
224            super(context);
225            mConfirm = confirm;
226            setClickable(true);
227            setBackground(mColor);
228        }
229
230        @Override
231        public void onAttachedToWindow() {
232            super.onAttachedToWindow();
233
234            DisplayMetrics metrics = new DisplayMetrics();
235            mWindowManager.getDefaultDisplay().getMetrics(metrics);
236            float density = metrics.density;
237
238            // create the confirmation cling
239            mClingLayout = (ViewGroup)
240                    View.inflate(getContext(), R.layout.immersive_mode_cling, null);
241
242            final Button ok = (Button) mClingLayout.findViewById(R.id.ok);
243            ok.setOnClickListener(new OnClickListener() {
244                @Override
245                public void onClick(View v) {
246                    mConfirm.run();
247                }
248            });
249            addView(mClingLayout, getBubbleLayoutParams());
250
251            if (ActivityManager.isHighEndGfx()) {
252                final View bubble = mClingLayout.findViewById(R.id.text);
253                bubble.setAlpha(0f);
254                bubble.setTranslationY(-OFFSET_DP*density);
255                bubble.animate()
256                        .alpha(1f)
257                        .translationY(0)
258                        .setDuration(300)
259                        .setInterpolator(new DecelerateInterpolator())
260                        .start();
261
262                ok.setAlpha(0f);
263                ok.setTranslationY(-OFFSET_DP*density);
264                ok.animate().alpha(1f)
265                        .translationY(0)
266                        .setDuration(300)
267                        .setStartDelay(200)
268                        .setInterpolator(new DecelerateInterpolator())
269                        .start();
270
271                mColorAnim = ValueAnimator.ofObject(new ArgbEvaluator(), 0, BGCOLOR);
272                mColorAnim.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
273                    @Override
274                    public void onAnimationUpdate(ValueAnimator animation) {
275                        final int c = (Integer) animation.getAnimatedValue();
276                        mColor.setColor(c);
277                    }
278                });
279                mColorAnim.setDuration(1000);
280                mColorAnim.start();
281            } else {
282                mColor.setColor(BGCOLOR);
283            }
284
285            mContext.registerReceiver(mReceiver, new IntentFilter(Intent.ACTION_CONFIGURATION_CHANGED));
286        }
287
288        @Override
289        public void onDetachedFromWindow() {
290            mContext.unregisterReceiver(mReceiver);
291        }
292
293        @Override
294        public boolean onTouchEvent(MotionEvent motion) {
295            Slog.v(TAG, "ClingWindowView.onTouchEvent");
296            return true;
297        }
298    }
299
300    private void handleShow(String pkg) {
301        mPromptPackage = pkg;
302        if (DEBUG) Slog.d(TAG, "Showing immersive mode confirmation for " + pkg);
303
304        mClingWindow = new ClingWindowView(mContext, confirmAction(pkg));
305
306        // we will be hiding the nav bar, so layout as if it's already hidden
307        mClingWindow.setSystemUiVisibility(
308                View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION
309              | View.SYSTEM_UI_FLAG_LAYOUT_STABLE);
310
311        // show the confirmation
312        WindowManager.LayoutParams lp = getClingWindowLayoutParams();
313        mWindowManager.addView(mClingWindow, lp);
314    }
315
316    private Runnable confirmAction(final String pkg) {
317        return new Runnable() {
318            @Override
319            public void run() {
320                if (pkg != null && !mConfirmedPackages.contains(pkg)) {
321                    if (DEBUG) Slog.d(TAG, "Confirming immersive mode for " + pkg);
322                    mConfirmedPackages.add(pkg);
323                    saveSetting();
324                }
325                handleHide();
326            }
327        };
328    }
329
330    private final class H extends Handler {
331        private static final int SHOW = 0;
332        private static final int HIDE = 1;
333
334        @Override
335        public void handleMessage(Message msg) {
336            switch(msg.what) {
337                case SHOW:
338                    handleShow((String)msg.obj);
339                    break;
340                case HIDE:
341                    handleHide();
342                    break;
343            }
344        }
345    }
346}
347