Revert^2 "6/N Add Controller for KeyguardPatternView"

87f6d21e679af9f783777d21f08c46f8bcaf04c0

Change-Id: Id01e3ba154a6fe1d73f720b9389920dad60332ac

1 files changed, 344 insertions, 0 deletions

diff --git a/packages/SystemUI/src/com/android/keyguard/KeyguardPatternViewController.java b/packages/SystemUI/src/com/android/keyguard/KeyguardPatternViewController.java
new file mode 100644
index 000000000000..5e547d3120bf
--- /dev/null
+++ b/packages/SystemUI/src/com/android/keyguard/KeyguardPatternViewController.java
@@ -0,0 +1,344 @@
+/*
+ * Copyright (C) 2020 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.keyguard;
+
+import static com.android.internal.util.LatencyTracker.ACTION_CHECK_CREDENTIAL;
+import static com.android.internal.util.LatencyTracker.ACTION_CHECK_CREDENTIAL_UNLOCKED;
+
+import android.content.res.ColorStateList;
+import android.os.AsyncTask;
+import android.os.CountDownTimer;
+import android.os.SystemClock;
+import android.view.View;
+
+import com.android.internal.util.LatencyTracker;
+import com.android.internal.widget.LockPatternChecker;
+import com.android.internal.widget.LockPatternUtils;
+import com.android.internal.widget.LockPatternView;
+import com.android.internal.widget.LockPatternView.Cell;
+import com.android.internal.widget.LockscreenCredential;
+import com.android.keyguard.EmergencyButton.EmergencyButtonCallback;
+import com.android.keyguard.KeyguardSecurityModel.SecurityMode;
+import com.android.systemui.R;
+
+import java.util.List;
+
+public class KeyguardPatternViewController
+        extends KeyguardInputViewController<KeyguardPatternView> {
+
+    // how many cells the user has to cross before we poke the wakelock
+    private static final int MIN_PATTERN_BEFORE_POKE_WAKELOCK = 2;
+
+    // how long before we clear the wrong pattern
+    private static final int PATTERN_CLEAR_TIMEOUT_MS = 2000;
+
+    private final KeyguardUpdateMonitor mKeyguardUpdateMonitor;
+    private final LockPatternUtils mLockPatternUtils;
+    private final LatencyTracker mLatencyTracker;
+    private final KeyguardMessageAreaController.Factory mMessageAreaControllerFactory;
+
+    private KeyguardMessageAreaController mMessageAreaController;
+    private LockPatternView mLockPatternView;
+    private CountDownTimer mCountdownTimer;
+    private KeyguardSecurityCallback mCallback;
+    private AsyncTask<?, ?, ?> mPendingLockCheck;
+
+    private EmergencyButtonCallback mEmergencyButtonCallback = new EmergencyButtonCallback() {
+        @Override
+        public void onEmergencyButtonClickedWhenInCall() {
+            mCallback.reset();
+        }
+    };
+
+    /**
+     * Useful for clearing out the wrong pattern after a delay
+     */
+    private Runnable mCancelPatternRunnable = new Runnable() {
+        @Override
+        public void run() {
+            mLockPatternView.clearPattern();
+        }
+    };
+
+    private class UnlockPatternListener implements LockPatternView.OnPatternListener {
+
+        @Override
+        public void onPatternStart() {
+            mLockPatternView.removeCallbacks(mCancelPatternRunnable);
+            mMessageAreaController.setMessage("");
+        }
+
+        @Override
+        public void onPatternCleared() {
+        }
+
+        @Override
+        public void onPatternCellAdded(List<Cell> pattern) {
+            mCallback.userActivity();
+            mCallback.onUserInput();
+        }
+
+        @Override
+        public void onPatternDetected(final List<LockPatternView.Cell> pattern) {
+            mKeyguardUpdateMonitor.setCredentialAttempted();
+            mLockPatternView.disableInput();
+            if (mPendingLockCheck != null) {
+                mPendingLockCheck.cancel(false);
+            }
+
+            final int userId = KeyguardUpdateMonitor.getCurrentUser();
+            if (pattern.size() < LockPatternUtils.MIN_PATTERN_REGISTER_FAIL) {
+                mLockPatternView.enableInput();
+                onPatternChecked(userId, false, 0, false /* not valid - too short */);
+                return;
+            }
+
+            mLatencyTracker.onActionStart(ACTION_CHECK_CREDENTIAL);
+            mLatencyTracker.onActionStart(ACTION_CHECK_CREDENTIAL_UNLOCKED);
+            mPendingLockCheck = LockPatternChecker.checkCredential(
+                    mLockPatternUtils,
+                    LockscreenCredential.createPattern(pattern),
+                    userId,
+                    new LockPatternChecker.OnCheckCallback() {
+
+                        @Override
+                        public void onEarlyMatched() {
+                            mLatencyTracker.onActionEnd(ACTION_CHECK_CREDENTIAL);
+                            onPatternChecked(userId, true /* matched */, 0 /* timeoutMs */,
+                                    true /* isValidPattern */);
+                        }
+
+                        @Override
+                        public void onChecked(boolean matched, int timeoutMs) {
+                            mLatencyTracker.onActionEnd(ACTION_CHECK_CREDENTIAL_UNLOCKED);
+                            mLockPatternView.enableInput();
+                            mPendingLockCheck = null;
+                            if (!matched) {
+                                onPatternChecked(userId, false /* matched */, timeoutMs,
+                                        true /* isValidPattern */);
+                            }
+                        }
+
+                        @Override
+                        public void onCancelled() {
+                            // We already got dismissed with the early matched callback, so we
+                            // cancelled the check. However, we still need to note down the latency.
+                            mLatencyTracker.onActionEnd(ACTION_CHECK_CREDENTIAL_UNLOCKED);
+                        }
+                    });
+            if (pattern.size() > MIN_PATTERN_BEFORE_POKE_WAKELOCK) {
+                mCallback.userActivity();
+                mCallback.onUserInput();
+            }
+        }
+
+        private void onPatternChecked(int userId, boolean matched, int timeoutMs,
+                boolean isValidPattern) {
+            boolean dismissKeyguard = KeyguardUpdateMonitor.getCurrentUser() == userId;
+            if (matched) {
+                mCallback.reportUnlockAttempt(userId, true, 0);
+                if (dismissKeyguard) {
+                    mLockPatternView.setDisplayMode(LockPatternView.DisplayMode.Correct);
+                    mCallback.dismiss(true, userId);
+                }
+            } else {
+                mLockPatternView.setDisplayMode(LockPatternView.DisplayMode.Wrong);
+                if (isValidPattern) {
+                    mCallback.reportUnlockAttempt(userId, false, timeoutMs);
+                    if (timeoutMs > 0) {
+                        long deadline = mLockPatternUtils.setLockoutAttemptDeadline(
+                                userId, timeoutMs);
+                        handleAttemptLockout(deadline);
+                    }
+                }
+                if (timeoutMs == 0) {
+                    mMessageAreaController.setMessage(R.string.kg_wrong_pattern);
+                    mLockPatternView.postDelayed(mCancelPatternRunnable, PATTERN_CLEAR_TIMEOUT_MS);
+                }
+            }
+        }
+    }
+
+    protected KeyguardPatternViewController(KeyguardPatternView view,
+            KeyguardUpdateMonitor keyguardUpdateMonitor,
+            SecurityMode securityMode,
+            LockPatternUtils lockPatternUtils,
+            KeyguardSecurityCallback keyguardSecurityCallback,
+            LatencyTracker latencyTracker,
+            KeyguardMessageAreaController.Factory messageAreaControllerFactory) {
+        super(view, securityMode, lockPatternUtils, keyguardSecurityCallback);
+        mKeyguardUpdateMonitor = keyguardUpdateMonitor;
+        mLockPatternUtils = lockPatternUtils;
+        mLatencyTracker = latencyTracker;
+        mMessageAreaControllerFactory = messageAreaControllerFactory;
+    }
+
+    @Override
+    protected void onViewAttached() {
+        KeyguardMessageArea kma = KeyguardMessageArea.findSecurityMessageDisplay(mView);
+        mMessageAreaController = mMessageAreaControllerFactory.create(kma);
+        mLockPatternView = mView.findViewById(R.id.lockPatternView);
+        mLockPatternView.setOnPatternListener(new UnlockPatternListener());
+        mLockPatternView.setSaveEnabled(false);
+        mLockPatternView.setInStealthMode(!mLockPatternUtils.isVisiblePatternEnabled(
+                KeyguardUpdateMonitor.getCurrentUser()));
+        // vibrate mode will be the same for the life of this screen
+        mLockPatternView.setTactileFeedbackEnabled(mLockPatternUtils.isTactileFeedbackEnabled());
+
+        EmergencyButton button = mView.findViewById(R.id.emergency_call_button);
+        if (button != null) {
+            button.setCallback(mEmergencyButtonCallback);
+        }
+
+        View cancelBtn = mView.findViewById(R.id.cancel_button);
+        if (cancelBtn != null) {
+            cancelBtn.setOnClickListener(view -> {
+                mCallback.reset();
+                mCallback.onCancelClicked();
+            });
+        }
+    }
+
+    @Override
+    protected void onViewDetached() {
+        super.onViewDetached();
+        mLockPatternView.setOnPatternListener(null);
+        EmergencyButton button = mView.findViewById(R.id.emergency_call_button);
+        if (button != null) {
+            button.setCallback(null);
+        }
+        View cancelBtn = mView.findViewById(R.id.cancel_button);
+        if (cancelBtn != null) {
+            cancelBtn.setOnClickListener(null);
+        }
+    }
+
+    @Override
+    public void reset() {
+        // reset lock pattern
+        mLockPatternView.setInStealthMode(!mLockPatternUtils.isVisiblePatternEnabled(
+                KeyguardUpdateMonitor.getCurrentUser()));
+        mLockPatternView.enableInput();
+        mLockPatternView.setEnabled(true);
+        mLockPatternView.clearPattern();
+
+        // if the user is currently locked out, enforce it.
+        long deadline = mLockPatternUtils.getLockoutAttemptDeadline(
+                KeyguardUpdateMonitor.getCurrentUser());
+        if (deadline != 0) {
+            handleAttemptLockout(deadline);
+        } else {
+            displayDefaultSecurityMessage();
+        }
+    }
+
+    @Override
+    public void onPause() {
+        super.onPause();
+
+        if (mCountdownTimer != null) {
+            mCountdownTimer.cancel();
+            mCountdownTimer = null;
+        }
+
+        if (mPendingLockCheck != null) {
+            mPendingLockCheck.cancel(false);
+            mPendingLockCheck = null;
+        }
+        displayDefaultSecurityMessage();
+    }
+
+    @Override
+    public void setKeyguardCallback(KeyguardSecurityCallback callback) {
+        mCallback = callback;
+    }
+
+    @Override
+    public void showPromptReason(int reason) {
+        /// TODO: move all this logic into the MessageAreaController?
+        switch (reason) {
+            case PROMPT_REASON_RESTART:
+                mMessageAreaController.setMessage(R.string.kg_prompt_reason_restart_pattern);
+                break;
+            case PROMPT_REASON_TIMEOUT:
+                mMessageAreaController.setMessage(R.string.kg_prompt_reason_timeout_pattern);
+                break;
+            case PROMPT_REASON_DEVICE_ADMIN:
+                mMessageAreaController.setMessage(R.string.kg_prompt_reason_device_admin);
+                break;
+            case PROMPT_REASON_USER_REQUEST:
+                mMessageAreaController.setMessage(R.string.kg_prompt_reason_user_request);
+                break;
+            case PROMPT_REASON_PREPARE_FOR_UPDATE:
+                mMessageAreaController.setMessage(R.string.kg_prompt_reason_timeout_pattern);
+                break;
+            case PROMPT_REASON_NONE:
+                break;
+            default:
+                mMessageAreaController.setMessage(R.string.kg_prompt_reason_timeout_pattern);
+                break;
+        }
+    }
+
+    @Override
+    public void showMessage(CharSequence message, ColorStateList colorState) {
+        if (colorState != null) {
+            mMessageAreaController.setNextMessageColor(colorState);
+        }
+        mMessageAreaController.setMessage(message);
+    }
+
+    @Override
+    public void startAppearAnimation() {
+        super.startAppearAnimation();
+    }
+
+    @Override
+    public boolean startDisappearAnimation(Runnable finishRunnable) {
+        return mView.startDisappearAnimation(
+                mKeyguardUpdateMonitor.needsSlowUnlockTransition(), finishRunnable);
+    }
+
+    private void displayDefaultSecurityMessage() {
+        mMessageAreaController.setMessage("");
+    }
+
+    private void handleAttemptLockout(long elapsedRealtimeDeadline) {
+        mLockPatternView.clearPattern();
+        mLockPatternView.setEnabled(false);
+        final long elapsedRealtime = SystemClock.elapsedRealtime();
+        final long secondsInFuture = (long) Math.ceil(
+                (elapsedRealtimeDeadline - elapsedRealtime) / 1000.0);
+        mCountdownTimer = new CountDownTimer(secondsInFuture * 1000, 1000) {
+
+            @Override
+            public void onTick(long millisUntilFinished) {
+                final int secondsRemaining = (int) Math.round(millisUntilFinished / 1000.0);
+                mMessageAreaController.setMessage(mView.getResources().getQuantityString(
+                        R.plurals.kg_too_many_failed_attempts_countdown,
+                        secondsRemaining, secondsRemaining));
+            }
+
+            @Override
+            public void onFinish() {
+                mLockPatternView.setEnabled(true);
+                displayDefaultSecurityMessage();
+            }
+
+        }.start();
+    }
+}