/*
* Copyright (C) 2014 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License
*/
package com.android.systemui.statusbar.phone;
import android.app.ActivityManager;
import android.content.Context;
import android.os.UserHandle;
import android.os.UserManager;
import android.util.Slog;
import android.view.KeyEvent;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.view.ViewTreeObserver;
import android.view.accessibility.AccessibilityEvent;
import com.android.internal.widget.LockPatternUtils;
import com.android.keyguard.KeyguardHostView;
import com.android.keyguard.KeyguardSecurityView;
import com.android.keyguard.KeyguardUpdateMonitor;
import com.android.keyguard.KeyguardUpdateMonitorCallback;
import com.android.keyguard.R;
import com.android.keyguard.ViewMediatorCallback;
import com.android.systemui.DejankUtils;
import com.android.systemui.classifier.FalsingManager;
import org.cyanogenmod.internal.util.CmLockPatternUtils;
import static com.android.keyguard.KeyguardHostView.OnDismissAction;
import static com.android.keyguard.KeyguardSecurityModel.SecurityMode;
/**
* A class which manages the bouncer on the lockscreen.
*/
public class KeyguardBouncer {
final static private String TAG = "KeyguardBouncer";
public static final int UNLOCK_SEQUENCE_DEFAULT = 0;
public static final int UNLOCK_SEQUENCE_BOUNCER_FIRST = 1;
public static final int UNLOCK_SEQUENCE_FORCE_BOUNCER = 2;
protected Context mContext;
protected ViewMediatorCallback mCallback;
protected LockPatternUtils mLockPatternUtils;
private CmLockPatternUtils mCmLockPatternUtils;
protected ViewGroup mContainer;
private StatusBarWindowManager mWindowManager;
protected KeyguardHostView mKeyguardView;
protected ViewGroup mRoot;
private boolean mShowingSoon;
private int mBouncerPromptReason;
private FalsingManager mFalsingManager;
private KeyguardUpdateMonitorCallback mUpdateMonitorCallback =
new KeyguardUpdateMonitorCallback() {
@Override
public void onStrongAuthStateChanged(int userId) {
mBouncerPromptReason = mCallback.getBouncerPromptReason();
}
};
public KeyguardBouncer(Context context, ViewMediatorCallback callback,
LockPatternUtils lockPatternUtils, StatusBarWindowManager windowManager,
ViewGroup container) {
mContext = context;
mCallback = callback;
mLockPatternUtils = lockPatternUtils;
mContainer = container;
mWindowManager = windowManager;
KeyguardUpdateMonitor.getInstance(mContext).registerCallback(mUpdateMonitorCallback);
mFalsingManager = FalsingManager.getInstance(mContext);
mCmLockPatternUtils = new CmLockPatternUtils(mContext);
}
public void show(boolean resetSecuritySelection) {
final int keyguardUserId = KeyguardUpdateMonitor.getCurrentUser();
if (keyguardUserId == UserHandle.USER_SYSTEM && UserManager.isSplitSystemUser()) {
// In split system user mode, we never unlock system user.
return;
}
mFalsingManager.onBouncerShown();
ensureView();
if (resetSecuritySelection) {
// showPrimarySecurityScreen() updates the current security method. This is needed in
// case we are already showing and the current security method changed.
mKeyguardView.showPrimarySecurityScreen();
}
if (mRoot.getVisibility() == View.VISIBLE || mShowingSoon) {
return;
}
final int activeUserId = ActivityManager.getCurrentUser();
final boolean allowDismissKeyguard =
!(UserManager.isSplitSystemUser() && activeUserId == UserHandle.USER_SYSTEM)
&& activeUserId == keyguardUserId;
// If allowed, try to dismiss the Keyguard. If no security auth (password/pin/pattern) is
// set, this will dismiss the whole Keyguard. Otherwise, show the bouncer.
if (allowDismissKeyguard && mKeyguardView.dismiss()) {
return;
}
// This condition may indicate an error on Android, so log it.
if (!allowDismissKeyguard) {
Slog.w(TAG, "User can't dismiss keyguard: " + activeUserId + " != " + keyguardUserId);
}
mShowingSoon = true;
// Split up the work over multiple frames.
DejankUtils.postAfterTraversal(mShowRunnable);
}
private final Runnable mShowRunnable = new Runnable() {
@Override
public void run() {
mRoot.setVisibility(View.VISIBLE);
mKeyguardView.onResume();
showPromptReason(mBouncerPromptReason);
if (mKeyguardView.getHeight() != 0) {
mKeyguardView.startAppearAnimation();
} else {
mKeyguardView.getViewTreeObserver().addOnPreDrawListener(
new ViewTreeObserver.OnPreDrawListener() {
@Override
public boolean onPreDraw() {
mKeyguardView.getViewTreeObserver().removeOnPreDrawListener(this);
mKeyguardView.startAppearAnimation();
return true;
}
});
mKeyguardView.requestLayout();
}
mShowingSoon = false;
mKeyguardView.sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED);
}
};
/**
* Show a string explaining why the security view needs to be solved.
*
* @param reason a flag indicating which string should be shown, see
* {@link KeyguardSecurityView#PROMPT_REASON_NONE}
* and {@link KeyguardSecurityView#PROMPT_REASON_RESTART}
*/
public void showPromptReason(int reason) {
mKeyguardView.showPromptReason(reason);
}
public void showMessage(String message, int color) {
mKeyguardView.showMessage(message, color);
}
private void cancelShowRunnable() {
DejankUtils.removeCallbacks(mShowRunnable);
mShowingSoon = false;
}
public void showWithDismissAction(OnDismissAction r, Runnable cancelAction) {
ensureView();
mKeyguardView.setOnDismissAction(r, cancelAction);
show(false /* resetSecuritySelection */);
}
public void hide(boolean destroyView) {
mFalsingManager.onBouncerHidden();
cancelShowRunnable();
if (mKeyguardView != null) {
mKeyguardView.cancelDismissAction();
mKeyguardView.cleanUp();
}
if (destroyView) {
removeView();
} else if (mRoot != null) {
mRoot.setVisibility(View.INVISIBLE);
}
}
/**
* See {@link StatusBarKeyguardViewManager#startPreHideAnimation}.
*/
public void startPreHideAnimation(Runnable runnable) {
if (mKeyguardView != null) {
mKeyguardView.startDisappearAnimation(runnable);
} else if (runnable != null) {
runnable.run();
}
}
/**
* Reset the state of the view.
*/
public void reset() {
cancelShowRunnable();
inflateView();
mFalsingManager.onBouncerHidden();
}
public void onScreenTurnedOff() {
if (mKeyguardView != null && mRoot != null && mRoot.getVisibility() == View.VISIBLE) {
mKeyguardView.onPause();
}
}
public boolean isShowing() {
return mShowingSoon || (mRoot != null && mRoot.getVisibility() == View.VISIBLE);
}
public void prepare() {
boolean wasInitialized = mRoot != null;
ensureView();
if (wasInitialized) {
mKeyguardView.showPrimarySecurityScreen();
}
mBouncerPromptReason = mCallback.getBouncerPromptReason();
}
protected void ensureView() {
if (mRoot == null) {
inflateView();
}
}
protected void inflateView() {
removeView();
mRoot = (ViewGroup) LayoutInflater.from(mContext).inflate(R.layout.keyguard_bouncer, null);
mKeyguardView = (KeyguardHostView) mRoot.findViewById(R.id.keyguard_host_view);
mKeyguardView.setLockPatternUtils(mLockPatternUtils);
mKeyguardView.setViewMediatorCallback(mCallback);
mContainer.addView(mRoot, mContainer.getChildCount());
mRoot.setVisibility(View.INVISIBLE);
}
protected void removeView() {
if (mRoot != null && mRoot.getParent() == mContainer) {
mContainer.removeView(mRoot);
mRoot = null;
}
}
public boolean onBackPressed() {
return mKeyguardView != null && mKeyguardView.handleBackKey();
}
/**
* @return Whether the bouncer should be shown first, this could be because of SIM PIN/PUK
* or it just could be chosen to be shown first.
*/
public int needsFullscreenBouncer() {
ensureView();
if (mKeyguardView != null) {
SecurityMode mode = mKeyguardView.getSecurityMode();
if (mode == SecurityMode.SimPin || mode == SecurityMode.SimPuk) {
return UNLOCK_SEQUENCE_FORCE_BOUNCER;
} else if ((mode == SecurityMode.Pattern || mode == SecurityMode.Password
|| mode == SecurityMode.PIN) && (mLockPatternUtils != null
&& mCmLockPatternUtils.shouldPassToSecurityView(
KeyguardUpdateMonitor.getCurrentUser()))) {
// "Bouncer first" mode is only available to some security methods
return UNLOCK_SEQUENCE_BOUNCER_FIRST;
}
}
return UNLOCK_SEQUENCE_DEFAULT;
}
/**
* Like {@link #needsFullscreenBouncer}, but uses the currently visible security method, which
* makes this method much faster.
*/
public int isFullscreenBouncer() {
if (mKeyguardView != null) {
SecurityMode mode = mKeyguardView.getCurrentSecurityMode();
if (mode == SecurityMode.SimPin || mode == SecurityMode.SimPuk) {
return UNLOCK_SEQUENCE_FORCE_BOUNCER;
} else if ((mode == SecurityMode.Pattern || mode == SecurityMode.Password
|| mode == SecurityMode.PIN) && (mLockPatternUtils != null
&& mCmLockPatternUtils.shouldPassToSecurityView(
KeyguardUpdateMonitor.getCurrentUser()))) {
// "Bouncer first" mode is only available to some security methods
return UNLOCK_SEQUENCE_BOUNCER_FIRST;
}
}
return UNLOCK_SEQUENCE_DEFAULT;
}
/**
* WARNING: This method might cause Binder calls.
*/
public boolean isSecure() {
return mKeyguardView == null || mKeyguardView.getSecurityMode() != SecurityMode.None;
}
public boolean shouldDismissOnMenuPressed() {
return mKeyguardView.shouldEnableMenuKey();
}
public boolean interceptMediaKey(KeyEvent event) {
ensureView();
return mKeyguardView.interceptMediaKey(event);
}
public void notifyKeyguardAuthenticated(boolean strongAuth) {
ensureView();
mKeyguardView.finish(strongAuth);
}
}