/*
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* Copyright (C) 2014 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License
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*/
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package com.android.systemui.statusbar.phone;
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import static com.android.keyguard.KeyguardSecurityModel.SecurityMode;
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import static com.android.systemui.plugins.ActivityStarter.OnDismissAction;
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import android.content.Context;
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import android.content.res.ColorStateList;
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import android.os.Handler;
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import android.os.UserHandle;
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import android.os.UserManager;
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import android.util.Log;
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import android.util.MathUtils;
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import android.util.Slog;
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import android.util.StatsLog;
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import android.view.KeyEvent;
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import android.view.LayoutInflater;
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import android.view.View;
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import android.view.ViewGroup;
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import android.view.ViewTreeObserver;
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import android.view.WindowInsets;
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import com.android.internal.widget.LockPatternUtils;
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import com.android.keyguard.KeyguardHostView;
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import com.android.keyguard.KeyguardSecurityView;
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import com.android.keyguard.KeyguardUpdateMonitor;
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import com.android.keyguard.KeyguardUpdateMonitorCallback;
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import com.android.keyguard.R;
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import com.android.keyguard.ViewMediatorCallback;
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import com.android.systemui.DejankUtils;
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import com.android.systemui.keyguard.DismissCallbackRegistry;
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import com.android.systemui.plugins.FalsingManager;
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import java.io.PrintWriter;
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/**
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* A class which manages the bouncer on the lockscreen.
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*/
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public class KeyguardBouncer {
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private static final String TAG = "KeyguardBouncer";
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static final long BOUNCER_FACE_DELAY = 800;
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static final float ALPHA_EXPANSION_THRESHOLD = 0.95f;
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static final float EXPANSION_HIDDEN = 1f;
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static final float EXPANSION_VISIBLE = 0f;
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protected final Context mContext;
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protected final ViewMediatorCallback mCallback;
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protected final LockPatternUtils mLockPatternUtils;
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protected final ViewGroup mContainer;
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private final FalsingManager mFalsingManager;
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private final DismissCallbackRegistry mDismissCallbackRegistry;
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private final Handler mHandler;
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private final BouncerExpansionCallback mExpansionCallback;
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private final KeyguardUpdateMonitor mKeyguardUpdateMonitor;
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private final KeyguardUpdateMonitorCallback mUpdateMonitorCallback =
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new KeyguardUpdateMonitorCallback() {
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@Override
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public void onStrongAuthStateChanged(int userId) {
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mBouncerPromptReason = mCallback.getBouncerPromptReason();
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}
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};
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private final Runnable mRemoveViewRunnable = this::removeView;
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protected KeyguardHostView mKeyguardView;
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private final Runnable mResetRunnable = ()-> {
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if (mKeyguardView != null) {
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mKeyguardView.resetSecurityContainer();
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}
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};
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private int mStatusBarHeight;
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private float mExpansion = EXPANSION_HIDDEN;
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protected ViewGroup mRoot;
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private boolean mShowingSoon;
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private int mBouncerPromptReason;
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private boolean mIsAnimatingAway;
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private boolean mIsScrimmed;
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private ViewGroup mLockIconContainer;
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public KeyguardBouncer(Context context, ViewMediatorCallback callback,
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LockPatternUtils lockPatternUtils, ViewGroup container,
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DismissCallbackRegistry dismissCallbackRegistry, FalsingManager falsingManager,
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BouncerExpansionCallback expansionCallback,
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KeyguardUpdateMonitor keyguardUpdateMonitor, Handler handler) {
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mContext = context;
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mCallback = callback;
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mLockPatternUtils = lockPatternUtils;
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mContainer = container;
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mKeyguardUpdateMonitor = keyguardUpdateMonitor;
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mFalsingManager = falsingManager;
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mDismissCallbackRegistry = dismissCallbackRegistry;
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mExpansionCallback = expansionCallback;
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mHandler = handler;
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mKeyguardUpdateMonitor.registerCallback(mUpdateMonitorCallback);
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}
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public void show(boolean resetSecuritySelection) {
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show(resetSecuritySelection, true /* scrimmed */);
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}
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/**
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* Shows the bouncer.
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*
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* @param resetSecuritySelection Cleans keyguard view
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* @param isScrimmed true when the bouncer show show scrimmed, false when the user will be
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* dragging it and translation should be deferred.
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*/
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public void show(boolean resetSecuritySelection, boolean isScrimmed) {
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final int keyguardUserId = KeyguardUpdateMonitor.getCurrentUser();
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if (keyguardUserId == UserHandle.USER_SYSTEM && UserManager.isSplitSystemUser()) {
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// In split system user mode, we never unlock system user.
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return;
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}
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ensureView();
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mIsScrimmed = isScrimmed;
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// On the keyguard, we want to show the bouncer when the user drags up, but it's
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// not correct to end the falsing session. We still need to verify if those touches
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// are valid.
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// Later, at the end of the animation, when the bouncer is at the top of the screen,
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// onFullyShown() will be called and FalsingManager will stop recording touches.
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if (isScrimmed) {
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setExpansion(EXPANSION_VISIBLE);
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}
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if (resetSecuritySelection) {
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// showPrimarySecurityScreen() updates the current security method. This is needed in
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// case we are already showing and the current security method changed.
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showPrimarySecurityScreen();
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}
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if (mRoot.getVisibility() == View.VISIBLE || mShowingSoon) {
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return;
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}
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final int activeUserId = KeyguardUpdateMonitor.getCurrentUser();
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final boolean isSystemUser =
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UserManager.isSplitSystemUser() && activeUserId == UserHandle.USER_SYSTEM;
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final boolean allowDismissKeyguard = !isSystemUser && activeUserId == keyguardUserId;
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// If allowed, try to dismiss the Keyguard. If no security auth (password/pin/pattern) is
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// set, this will dismiss the whole Keyguard. Otherwise, show the bouncer.
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if (allowDismissKeyguard && mKeyguardView.dismiss(activeUserId)) {
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return;
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}
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// This condition may indicate an error on Android, so log it.
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if (!allowDismissKeyguard) {
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Slog.w(TAG, "User can't dismiss keyguard: " + activeUserId + " != " + keyguardUserId);
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}
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mShowingSoon = true;
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// Split up the work over multiple frames.
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DejankUtils.removeCallbacks(mResetRunnable);
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if (mKeyguardUpdateMonitor.isFaceDetectionRunning()) {
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mHandler.postDelayed(mShowRunnable, BOUNCER_FACE_DELAY);
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} else {
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DejankUtils.postAfterTraversal(mShowRunnable);
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}
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mCallback.onBouncerVisiblityChanged(true /* shown */);
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mExpansionCallback.onStartingToShow();
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}
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public boolean isScrimmed() {
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return mIsScrimmed;
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}
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public ViewGroup getLockIconContainer() {
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return mRoot == null || mRoot.getVisibility() != View.VISIBLE ? null : mLockIconContainer;
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}
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/**
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* This method must be called at the end of the bouncer animation when
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* the translation is performed manually by the user, otherwise FalsingManager
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* will never be notified and its internal state will be out of sync.
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*/
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private void onFullyShown() {
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mFalsingManager.onBouncerShown();
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if (mKeyguardView == null) {
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Log.wtf(TAG, "onFullyShown when view was null");
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} else {
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mKeyguardView.onResume();
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}
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}
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/**
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* @see #onFullyShown()
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*/
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private void onFullyHidden() {
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if (!mShowingSoon) {
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cancelShowRunnable();
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if (mRoot != null) {
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mRoot.setVisibility(View.INVISIBLE);
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}
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mFalsingManager.onBouncerHidden();
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DejankUtils.postAfterTraversal(mResetRunnable);
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}
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}
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private final Runnable mShowRunnable = new Runnable() {
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@Override
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public void run() {
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mRoot.setVisibility(View.VISIBLE);
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showPromptReason(mBouncerPromptReason);
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final CharSequence customMessage = mCallback.consumeCustomMessage();
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if (customMessage != null) {
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mKeyguardView.showErrorMessage(customMessage);
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}
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// We might still be collapsed and the view didn't have time to layout yet or still
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// be small, let's wait on the predraw to do the animation in that case.
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if (mKeyguardView.getHeight() != 0 && mKeyguardView.getHeight() != mStatusBarHeight) {
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mKeyguardView.startAppearAnimation();
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} else {
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mKeyguardView.getViewTreeObserver().addOnPreDrawListener(
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new ViewTreeObserver.OnPreDrawListener() {
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@Override
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public boolean onPreDraw() {
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mKeyguardView.getViewTreeObserver().removeOnPreDrawListener(this);
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mKeyguardView.startAppearAnimation();
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return true;
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}
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});
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mKeyguardView.requestLayout();
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}
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mShowingSoon = false;
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if (mExpansion == EXPANSION_VISIBLE) {
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mKeyguardView.onResume();
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mKeyguardView.resetSecurityContainer();
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}
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StatsLog.write(StatsLog.KEYGUARD_BOUNCER_STATE_CHANGED,
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StatsLog.KEYGUARD_BOUNCER_STATE_CHANGED__STATE__SHOWN);
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}
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};
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/**
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* Show a string explaining why the security view needs to be solved.
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*
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* @param reason a flag indicating which string should be shown, see
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* {@link KeyguardSecurityView#PROMPT_REASON_NONE}
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* and {@link KeyguardSecurityView#PROMPT_REASON_RESTART}
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*/
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public void showPromptReason(int reason) {
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if (mKeyguardView != null) {
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mKeyguardView.showPromptReason(reason);
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} else {
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Log.w(TAG, "Trying to show prompt reason on empty bouncer");
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}
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}
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public void showMessage(String message, ColorStateList colorState) {
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if (mKeyguardView != null) {
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mKeyguardView.showMessage(message, colorState);
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} else {
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Log.w(TAG, "Trying to show message on empty bouncer");
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}
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}
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private void cancelShowRunnable() {
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DejankUtils.removeCallbacks(mShowRunnable);
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mHandler.removeCallbacks(mShowRunnable);
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mShowingSoon = false;
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}
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public void showWithDismissAction(OnDismissAction r, Runnable cancelAction) {
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ensureView();
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mKeyguardView.setOnDismissAction(r, cancelAction);
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show(false /* resetSecuritySelection */);
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}
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public void hide(boolean destroyView) {
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if (isShowing()) {
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StatsLog.write(StatsLog.KEYGUARD_BOUNCER_STATE_CHANGED,
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StatsLog.KEYGUARD_BOUNCER_STATE_CHANGED__STATE__HIDDEN);
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mDismissCallbackRegistry.notifyDismissCancelled();
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}
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mIsScrimmed = false;
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mFalsingManager.onBouncerHidden();
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mCallback.onBouncerVisiblityChanged(false /* shown */);
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cancelShowRunnable();
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if (mKeyguardView != null) {
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mKeyguardView.cancelDismissAction();
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mKeyguardView.cleanUp();
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}
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mIsAnimatingAway = false;
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if (mRoot != null) {
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mRoot.setVisibility(View.INVISIBLE);
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if (destroyView) {
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// We have a ViewFlipper that unregisters a broadcast when being detached, which may
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// be slow because of AM lock contention during unlocking. We can delay it a bit.
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mHandler.postDelayed(mRemoveViewRunnable, 50);
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}
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}
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}
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/**
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* See {@link StatusBarKeyguardViewManager#startPreHideAnimation}.
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*/
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public void startPreHideAnimation(Runnable runnable) {
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mIsAnimatingAway = true;
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if (mKeyguardView != null) {
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mKeyguardView.startDisappearAnimation(runnable);
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} else if (runnable != null) {
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runnable.run();
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}
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}
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/**
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* Reset the state of the view.
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*/
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public void reset() {
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cancelShowRunnable();
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inflateView();
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mFalsingManager.onBouncerHidden();
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}
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public void onScreenTurnedOff() {
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if (mKeyguardView != null && mRoot != null && mRoot.getVisibility() == View.VISIBLE) {
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mKeyguardView.onPause();
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}
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}
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public boolean isShowing() {
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return (mShowingSoon || (mRoot != null && mRoot.getVisibility() == View.VISIBLE))
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&& mExpansion == EXPANSION_VISIBLE && !isAnimatingAway();
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}
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public boolean isPartiallyVisible() {
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return (mShowingSoon || (mRoot != null && mRoot.getVisibility() == View.VISIBLE))
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&& mExpansion != EXPANSION_HIDDEN && !isAnimatingAway();
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}
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/**
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* @return {@code true} when bouncer's pre-hide animation already started but isn't completely
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* hidden yet, {@code false} otherwise.
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*/
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public boolean isAnimatingAway() {
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return mIsAnimatingAway;
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}
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public void prepare() {
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boolean wasInitialized = mRoot != null;
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ensureView();
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if (wasInitialized) {
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showPrimarySecurityScreen();
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}
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mBouncerPromptReason = mCallback.getBouncerPromptReason();
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}
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private void showPrimarySecurityScreen() {
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mKeyguardView.showPrimarySecurityScreen();
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KeyguardSecurityView keyguardSecurityView = mKeyguardView.getCurrentSecurityView();
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if (keyguardSecurityView != null) {
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mLockIconContainer = ((ViewGroup) keyguardSecurityView)
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.findViewById(R.id.lock_icon_container);
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}
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}
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/**
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* Current notification panel expansion
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* @param fraction 0 when notification panel is collapsed and 1 when expanded.
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* @see StatusBarKeyguardViewManager#onPanelExpansionChanged
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*/
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public void setExpansion(float fraction) {
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float oldExpansion = mExpansion;
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mExpansion = fraction;
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if (mKeyguardView != null && !mIsAnimatingAway) {
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float alpha = MathUtils.map(ALPHA_EXPANSION_THRESHOLD, 1, 1, 0, fraction);
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mKeyguardView.setAlpha(MathUtils.constrain(alpha, 0f, 1f));
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mKeyguardView.setTranslationY(fraction * mKeyguardView.getHeight());
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}
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if (fraction == EXPANSION_VISIBLE && oldExpansion != EXPANSION_VISIBLE) {
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onFullyShown();
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mExpansionCallback.onFullyShown();
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} else if (fraction == EXPANSION_HIDDEN && oldExpansion != EXPANSION_HIDDEN) {
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onFullyHidden();
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mExpansionCallback.onFullyHidden();
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} else if (fraction != EXPANSION_VISIBLE && oldExpansion == EXPANSION_VISIBLE) {
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mExpansionCallback.onStartingToHide();
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}
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}
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public boolean willDismissWithAction() {
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return mKeyguardView != null && mKeyguardView.hasDismissActions();
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}
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public int getTop() {
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if (mKeyguardView == null) {
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return 0;
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}
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int top = mKeyguardView.getTop();
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// The password view has an extra top padding that should be ignored.
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if (mKeyguardView.getCurrentSecurityMode() == SecurityMode.Password) {
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View messageArea = mKeyguardView.findViewById(R.id.keyguard_message_area);
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top += messageArea.getTop();
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}
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return top;
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}
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protected void ensureView() {
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// Removal of the view might be deferred to reduce unlock latency,
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// in this case we need to force the removal, otherwise we'll
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// end up in an unpredictable state.
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boolean forceRemoval = mHandler.hasCallbacks(mRemoveViewRunnable);
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if (mRoot == null || forceRemoval) {
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inflateView();
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}
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}
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protected void inflateView() {
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removeView();
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mHandler.removeCallbacks(mRemoveViewRunnable);
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mRoot = (ViewGroup) LayoutInflater.from(mContext).inflate(R.layout.keyguard_bouncer, null);
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mKeyguardView = mRoot.findViewById(R.id.keyguard_host_view);
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mKeyguardView.setLockPatternUtils(mLockPatternUtils);
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mKeyguardView.setViewMediatorCallback(mCallback);
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mContainer.addView(mRoot, mContainer.getChildCount());
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mStatusBarHeight = mRoot.getResources().getDimensionPixelOffset(
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com.android.systemui.R.dimen.status_bar_height);
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mRoot.setVisibility(View.INVISIBLE);
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mRoot.setAccessibilityPaneTitle(mKeyguardView.getAccessibilityTitleForCurrentMode());
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final WindowInsets rootInsets = mRoot.getRootWindowInsets();
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if (rootInsets != null) {
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mRoot.dispatchApplyWindowInsets(rootInsets);
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}
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}
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protected void removeView() {
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if (mRoot != null && mRoot.getParent() == mContainer) {
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mContainer.removeView(mRoot);
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mRoot = null;
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}
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}
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public boolean onBackPressed() {
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return mKeyguardView != null && mKeyguardView.handleBackKey();
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}
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/**
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* @return True if and only if the security method should be shown before showing the
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* notifications on Keyguard, like SIM PIN/PUK.
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*/
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public boolean needsFullscreenBouncer() {
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ensureView();
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if (mKeyguardView != null) {
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SecurityMode mode = mKeyguardView.getSecurityMode();
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return mode == SecurityMode.SimPin || mode == SecurityMode.SimPuk;
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}
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return false;
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}
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/**
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* Like {@link #needsFullscreenBouncer}, but uses the currently visible security method, which
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* makes this method much faster.
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*/
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public boolean isFullscreenBouncer() {
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if (mKeyguardView != null) {
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SecurityMode mode = mKeyguardView.getCurrentSecurityMode();
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return mode == SecurityMode.SimPin || mode == SecurityMode.SimPuk;
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}
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return false;
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}
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/**
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* WARNING: This method might cause Binder calls.
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*/
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public boolean isSecure() {
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return mKeyguardView == null || mKeyguardView.getSecurityMode() != SecurityMode.None;
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}
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public boolean shouldDismissOnMenuPressed() {
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return mKeyguardView.shouldEnableMenuKey();
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}
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public boolean interceptMediaKey(KeyEvent event) {
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ensureView();
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return mKeyguardView.interceptMediaKey(event);
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}
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public void notifyKeyguardAuthenticated(boolean strongAuth) {
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ensureView();
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mKeyguardView.finish(strongAuth, KeyguardUpdateMonitor.getCurrentUser());
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}
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public void dump(PrintWriter pw) {
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pw.println("KeyguardBouncer");
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pw.println(" isShowing(): " + isShowing());
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pw.println(" mStatusBarHeight: " + mStatusBarHeight);
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pw.println(" mExpansion: " + mExpansion);
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pw.println(" mKeyguardView; " + mKeyguardView);
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pw.println(" mShowingSoon: " + mKeyguardView);
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pw.println(" mBouncerPromptReason: " + mBouncerPromptReason);
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pw.println(" mIsAnimatingAway: " + mIsAnimatingAway);
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}
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public interface BouncerExpansionCallback {
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void onFullyShown();
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void onStartingToHide();
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void onStartingToShow();
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void onFullyHidden();
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}
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}
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