Start keyguard docs

1. Move responsibility for the bouncer container to the
NotificationShadeWindowViewController
2. Start very basic keyguard documentation (much more to come)

Bug: 195430376
Test: atest KeyguardBouncerTest StatusBarTest StatusBarKeyguardViewManagerTest
      NotificationPanelViewControllerTest
Change-Id: Iba45a9252fd37c00b2023407eb44bd91c44a87ad

11 files changed, 74 insertions, 32 deletions

diff --git a/packages/SystemUI/docs/keyguard.md b/packages/SystemUI/docs/keyguard.md
new file mode 100644
index 000000000000..e3d48aee96e4
--- /dev/null
+++ b/packages/SystemUI/docs/keyguard.md
@@ -0,0 +1,12 @@
+# Keyguard (aka Lockscreen)
+
+Keyguard is responsible for:
+
+1. Handling authentication to allow the user to unlock the device, via biometrics or [KeyguardBouncer][1]
+2. Displaying informational content such as the time, notifications, and smartspace
+3. Always-on Display (AOD)
+
+Keyguard is the first screen available when turning on the device, as long as the user has not specified a security method of NONE.
+
+[1]: /frameworks/base/packages/SystemUI/docs/keyguard/bouncer.md
+
diff --git a/packages/SystemUI/docs/keyguard/bouncer.md b/packages/SystemUI/docs/keyguard/bouncer.md
new file mode 100644
index 000000000000..a724966a639a
--- /dev/null
+++ b/packages/SystemUI/docs/keyguard/bouncer.md
@@ -0,0 +1,18 @@
+# Bouncer
+
+[KeyguardBouncer][1] is the component responsible for displaying the security method set by the user (password, PIN, pattern) as well as SIM-related security methods, allowing the user to unlock the device or SIM.
+
+## Components
+
+The bouncer contains a hierarchy of controllers/views to render the user's security method and to manage the authentication attempts.
+
+1. [KeyguardBouncer][1] - Entrypoint for managing the bouncer visibility.
+  1. [KeyguardHostViewController][2] - Intercepts media keys. Can most likely be merged with the next item.
+    1. [KeyguardSecurityContainerController][3] - Manages unlock attempt responses, one-handed use
+       1. [KeyguardSecurityViewFlipperController][4] - Based upon the [KeyguardSecurityModel#SecurityMode][5], will instantiate the required view and controller. PIN, Pattern, etc.
+
+[1]: /frameworks/base/packages/SystemUI/com/android/systemui/statusbar/phone/KeyguardBouncer
+[2]: /frameworks/base/packages/SystemUI/com/android/keyguard/KeyguardHostViewController
+[3]: /frameworks/base/packages/SystemUI/com/android/keyguard/KeyguardSecurityContainerController
+[4]: /frameworks/base/packages/SystemUI/com/android/keyguard/KeyguardSecurityViewFlipperController
+[5]: /frameworks/base/packages/SystemUI/com/android/keyguard/KeyguardSecurityModel
diff --git a/packages/SystemUI/res/layout/super_notification_shade.xml b/packages/SystemUI/res/layout/super_notification_shade.xml
index d9a56707fb31..e02a1767a96c 100644
--- a/packages/SystemUI/res/layout/super_notification_shade.xml
+++ b/packages/SystemUI/res/layout/super_notification_shade.xml
@@ -97,7 +97,7 @@
             android:singleLine="true"
             android:ellipsize="marquee"
             android:focusable="true" />
-        <FrameLayout android:id="@+id/keyboard_bouncer_container"
+        <FrameLayout android:id="@+id/keyguard_bouncer_container"
                      android:layout_height="0dp"
                      android:layout_width="match_parent"
                      android:layout_weight="1" />
diff --git a/packages/SystemUI/src/com/android/keyguard/KeyguardViewController.java b/packages/SystemUI/src/com/android/keyguard/KeyguardViewController.java
index ecc8c0074e18..db729da9c8bf 100644
--- a/packages/SystemUI/src/com/android/keyguard/KeyguardViewController.java
+++ b/packages/SystemUI/src/com/android/keyguard/KeyguardViewController.java
@@ -18,7 +18,6 @@ package com.android.keyguard;
 
 import android.os.Bundle;
 import android.view.View;
-import android.view.ViewGroup;
 import android.view.ViewRootImpl;
 
 import com.android.systemui.keyguard.KeyguardViewMediator;
@@ -186,14 +185,12 @@ public interface KeyguardViewController {
     /**
      * Registers the StatusBar to which this Keyguard View is mounted.
      * @param statusBar
-     * @param container
      * @param notificationPanelViewController
      * @param biometricUnlockController
      * @param notificationContainer
      * @param bypassController
      */
     void registerStatusBar(StatusBar statusBar,
-            ViewGroup container,
             NotificationPanelViewController notificationPanelViewController,
             BiometricUnlockController biometricUnlockController,
             View notificationContainer,
diff --git a/packages/SystemUI/src/com/android/systemui/keyguard/KeyguardViewMediator.java b/packages/SystemUI/src/com/android/systemui/keyguard/KeyguardViewMediator.java
index 1561eb6368a8..c5694398cdc6 100644
--- a/packages/SystemUI/src/com/android/systemui/keyguard/KeyguardViewMediator.java
+++ b/packages/SystemUI/src/com/android/systemui/keyguard/KeyguardViewMediator.java
@@ -77,7 +77,6 @@ import android.view.IRemoteAnimationRunner;
 import android.view.RemoteAnimationTarget;
 import android.view.SyncRtSurfaceTransactionApplier;
 import android.view.View;
-import android.view.ViewGroup;
 import android.view.WindowManager;
 import android.view.WindowManagerPolicyConstants;
 import android.view.animation.Animation;
@@ -2623,7 +2622,6 @@ public class KeyguardViewMediator extends SystemUI implements Dumpable,
      * Registers the StatusBar to which the Keyguard View is mounted.
      *
      * @param statusBar
-     * @param container
      * @param panelView
      * @param biometricUnlockController
      * @param notificationContainer
@@ -2631,10 +2629,10 @@ public class KeyguardViewMediator extends SystemUI implements Dumpable,
      * @return the View Controller for the Keyguard View this class is mediating.
      */
     public KeyguardViewController registerStatusBar(StatusBar statusBar,
-            ViewGroup container, NotificationPanelViewController panelView,
+            NotificationPanelViewController panelView,
             BiometricUnlockController biometricUnlockController,
             View notificationContainer, KeyguardBypassController bypassController) {
-        mKeyguardViewControllerLazy.get().registerStatusBar(statusBar, container, panelView,
+        mKeyguardViewControllerLazy.get().registerStatusBar(statusBar, panelView,
                 biometricUnlockController, notificationContainer, bypassController);
         return mKeyguardViewControllerLazy.get();
     }
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/phone/KeyguardBouncer.java b/packages/SystemUI/src/com/android/systemui/statusbar/phone/KeyguardBouncer.java
index f1d5e0271b96..a090ac35070e 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/phone/KeyguardBouncer.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/phone/KeyguardBouncer.java
@@ -126,6 +126,19 @@ public class KeyguardBouncer {
         mExpansionCallbacks.add(expansionCallback);
     }
 
+    /**
+     * Enable/disable only the back button
+     */
+    public void setBackButtonEnabled(boolean enabled) {
+        int vis = mContainer.getSystemUiVisibility();
+        if (enabled) {
+            vis &= ~View.STATUS_BAR_DISABLE_BACK;
+        } else {
+            vis |= View.STATUS_BAR_DISABLE_BACK;
+        }
+        mContainer.setSystemUiVisibility(vis);
+    }
+
     public void show(boolean resetSecuritySelection) {
         show(resetSecuritySelection, true /* scrimmed */);
     }
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/phone/NotificationShadeWindowViewController.java b/packages/SystemUI/src/com/android/systemui/statusbar/phone/NotificationShadeWindowViewController.java
index 03d0bb02e1bd..9d06d2bae8cb 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/phone/NotificationShadeWindowViewController.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/phone/NotificationShadeWindowViewController.java
@@ -171,6 +171,13 @@ public class NotificationShadeWindowViewController {
         mBrightnessMirror = mView.findViewById(R.id.brightness_mirror_container);
     }
 
+    /**
+     * @return Location where to place the KeyguardBouncer
+     */
+    public ViewGroup getBouncerContainer() {
+        return mView.findViewById(R.id.keyguard_bouncer_container);
+    }
+
     /** Inflates the {@link R.layout#status_bar_expanded} layout and sets it up. */
     public void setupExpandedStatusBar() {
         mStackScrollLayout = mView.findViewById(R.id.notification_stack_scroller);
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/phone/StatusBar.java b/packages/SystemUI/src/com/android/systemui/statusbar/phone/StatusBar.java
index 67b2ee5ba210..78ab0d7f8a2f 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/phone/StatusBar.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/phone/StatusBar.java
@@ -1552,6 +1552,9 @@ public class StatusBar extends SystemUI implements
                     time, PowerManager.WAKE_REASON_GESTURE, "com.android.systemui:" + why);
             mWakeUpComingFromTouch = true;
             where.getLocationInWindow(mTmpInt2);
+
+            // NOTE, the incoming view can sometimes be the entire container... unsure if
+            // this location is valuable enough
             mWakeUpTouchLocation = new PointF(mTmpInt2[0] + where.getWidth() / 2,
                     mTmpInt2[1] + where.getHeight() / 2);
             mFalsingCollector.onScreenOnFromTouch();
@@ -1645,7 +1648,7 @@ public class StatusBar extends SystemUI implements
                     }
                 });
         mStatusBarKeyguardViewManager.registerStatusBar(
-                /* statusBar= */ this, getBouncerContainer(),
+                /* statusBar= */ this,
                 mNotificationPanelViewController, mBiometricUnlockController,
                 mStackScroller, mKeyguardBypassController);
         mKeyguardIndicationController
@@ -1680,8 +1683,8 @@ public class StatusBar extends SystemUI implements
         return mNotificationPanelViewController;
     }
 
-    protected ViewGroup getBouncerContainer() {
-        return mNotificationShadeWindowView.findViewById(R.id.keyboard_bouncer_container);
+    public ViewGroup getBouncerContainer() {
+        return mNotificationShadeWindowViewController.getBouncerContainer();
     }
 
     public int getStatusBarHeight() {
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/phone/StatusBarKeyguardViewManager.java b/packages/SystemUI/src/com/android/systemui/statusbar/phone/StatusBarKeyguardViewManager.java
index 18fd9d3c6651..07489a91f128 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/phone/StatusBarKeyguardViewManager.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/phone/StatusBarKeyguardViewManager.java
@@ -120,7 +120,8 @@ public class StatusBarKeyguardViewManager implements RemoteInputController.Callb
         @Override
         public void onFullyShown() {
             updateStates();
-            mStatusBar.wakeUpIfDozing(SystemClock.uptimeMillis(), mContainer, "BOUNCER_VISIBLE");
+            mStatusBar.wakeUpIfDozing(SystemClock.uptimeMillis(),
+                    mStatusBar.getBouncerContainer(), "BOUNCER_VISIBLE");
         }
 
         @Override
@@ -174,7 +175,6 @@ public class StatusBarKeyguardViewManager implements RemoteInputController.Callb
     private NotificationPanelViewController mNotificationPanelViewController;
     private BiometricUnlockController mBiometricUnlockController;
 
-    private ViewGroup mContainer;
     private View mNotificationContainer;
 
     protected KeyguardBouncer mBouncer;
@@ -270,14 +270,14 @@ public class StatusBarKeyguardViewManager implements RemoteInputController.Callb
 
     @Override
     public void registerStatusBar(StatusBar statusBar,
-            ViewGroup container,
             NotificationPanelViewController notificationPanelViewController,
             BiometricUnlockController biometricUnlockController,
             View notificationContainer,
             KeyguardBypassController bypassController) {
         mStatusBar = statusBar;
-        mContainer = container;
         mBiometricUnlockController = biometricUnlockController;
+
+        ViewGroup container = mStatusBar.getBouncerContainer();
         mBouncer = mKeyguardBouncerFactory.create(container, mExpansionCallback);
         mNotificationPanelViewController = notificationPanelViewController;
         notificationPanelViewController.addExpansionListener(this);
@@ -356,7 +356,8 @@ public class StatusBarKeyguardViewManager implements RemoteInputController.Callb
         } else if (mPulsing && expansion == KeyguardBouncer.EXPANSION_VISIBLE) {
             // Panel expanded while pulsing but didn't translate the bouncer (because we are
             // unlocked.) Let's simply wake-up to dismiss the lock screen.
-            mStatusBar.wakeUpIfDozing(SystemClock.uptimeMillis(), mContainer, "BOUNCER_VISIBLE");
+            mStatusBar.wakeUpIfDozing(SystemClock.uptimeMillis(), mStatusBar.getBouncerContainer(),
+                    "BOUNCER_VISIBLE");
         }
     }
 
@@ -833,7 +834,7 @@ public class StatusBarKeyguardViewManager implements RemoteInputController.Callb
     }
 
     public void onKeyguardFadedAway() {
-        mContainer.postDelayed(() -> mNotificationShadeWindowController
+        mNotificationContainer.postDelayed(() -> mNotificationShadeWindowController
                         .setKeyguardFadingAway(false), 100);
         ViewGroupFadeHelper.reset(mNotificationPanelViewController.getView());
         mStatusBar.finishKeyguardFadingAway();
@@ -958,10 +959,6 @@ public class StatusBarKeyguardViewManager implements RemoteInputController.Callb
     };
 
     protected void updateStates() {
-        if (mContainer == null ) {
-            return;
-        }
-        int vis = mContainer.getSystemUiVisibility();
         boolean showing = mShowing;
         boolean occluded = mOccluded;
         boolean bouncerShowing = mBouncer.isShowing();
@@ -973,9 +970,9 @@ public class StatusBarKeyguardViewManager implements RemoteInputController.Callb
                 (mLastBouncerDismissible || !mLastShowing || mLastRemoteInputActive)
                 || mFirstUpdate) {
             if (bouncerDismissible || !showing || remoteInputActive) {
-                mContainer.setSystemUiVisibility(vis & ~View.STATUS_BAR_DISABLE_BACK);
+                mBouncer.setBackButtonEnabled(true);
             } else {
-                mContainer.setSystemUiVisibility(vis | View.STATUS_BAR_DISABLE_BACK);
+                mBouncer.setBackButtonEnabled(false);
             }
         }
 
@@ -1042,11 +1039,11 @@ public class StatusBarKeyguardViewManager implements RemoteInputController.Callb
                 if (delay == 0) {
                     mMakeNavigationBarVisibleRunnable.run();
                 } else {
-                    mContainer.postOnAnimationDelayed(mMakeNavigationBarVisibleRunnable,
+                    mNotificationContainer.postOnAnimationDelayed(mMakeNavigationBarVisibleRunnable,
                             delay);
                 }
             } else {
-                mContainer.removeCallbacks(mMakeNavigationBarVisibleRunnable);
+                mNotificationContainer.removeCallbacks(mMakeNavigationBarVisibleRunnable);
                 mStatusBar.getNotificationShadeWindowView().getWindowInsetsController()
                         .hide(navigationBars());
             }
@@ -1371,4 +1368,4 @@ public class StatusBarKeyguardViewManager implements RemoteInputController.Callb
         void requestUdfps(boolean requestUdfps, int color);
 
     }
-}
\ No newline at end of file
+}
diff --git a/packages/SystemUI/tests/src/com/android/systemui/statusbar/phone/StatusBarKeyguardViewManagerTest.java b/packages/SystemUI/tests/src/com/android/systemui/statusbar/phone/StatusBarKeyguardViewManagerTest.java
index 6e3d5ce7953e..3fcd0712079f 100644
--- a/packages/SystemUI/tests/src/com/android/systemui/statusbar/phone/StatusBarKeyguardViewManagerTest.java
+++ b/packages/SystemUI/tests/src/com/android/systemui/statusbar/phone/StatusBarKeyguardViewManagerTest.java
@@ -16,15 +16,12 @@
 
 package com.android.systemui.statusbar.phone;
 
-import static org.junit.Assert.assertFalse;
-import static org.junit.Assert.assertTrue;
 import static org.mockito.ArgumentMatchers.any;
 import static org.mockito.ArgumentMatchers.anyBoolean;
 import static org.mockito.ArgumentMatchers.anyFloat;
 import static org.mockito.ArgumentMatchers.anyInt;
 import static org.mockito.ArgumentMatchers.eq;
 import static org.mockito.Mockito.clearInvocations;
-import static org.mockito.Mockito.doReturn;
 import static org.mockito.Mockito.mock;
 import static org.mockito.Mockito.never;
 import static org.mockito.Mockito.reset;
@@ -119,7 +116,7 @@ public class StatusBarKeyguardViewManagerTest extends SysuiTestCase {
                 any(ViewGroup.class),
                 any(KeyguardBouncer.BouncerExpansionCallback.class)))
                 .thenReturn(mBouncer);
-
+        when(mStatusBar.getBouncerContainer()).thenReturn(mContainer);
         when(mContainer.findViewById(anyInt())).thenReturn(mKeyguardMessageArea);
         mWakefulnessLifecycle = new WakefulnessLifecycle(
                 getContext(),
@@ -143,7 +140,7 @@ public class StatusBarKeyguardViewManagerTest extends SysuiTestCase {
                 mUnlockedScreenOffAnimationController,
                 mKeyguardMessageAreaFactory,
                 mShadeController);
-        mStatusBarKeyguardViewManager.registerStatusBar(mStatusBar, mContainer,
+        mStatusBarKeyguardViewManager.registerStatusBar(mStatusBar,
                 mNotificationPanelView, mBiometrucUnlockController,
                 mNotificationContainer, mBypassController);
         mStatusBarKeyguardViewManager.show(null);
diff --git a/packages/SystemUI/tests/src/com/android/systemui/statusbar/phone/StatusBarTest.java b/packages/SystemUI/tests/src/com/android/systemui/statusbar/phone/StatusBarTest.java
index 6868e1855c65..741d95f283e3 100644
--- a/packages/SystemUI/tests/src/com/android/systemui/statusbar/phone/StatusBarTest.java
+++ b/packages/SystemUI/tests/src/com/android/systemui/statusbar/phone/StatusBarTest.java
@@ -459,7 +459,7 @@ public class StatusBarTest extends SysuiTestCase {
                 mock(DumpManager.class),
                 mActivityLaunchAnimator,
                 mDialogLaunchAnimator);
-        when(mKeyguardViewMediator.registerStatusBar(any(StatusBar.class), any(ViewGroup.class),
+        when(mKeyguardViewMediator.registerStatusBar(any(StatusBar.class),
                 any(NotificationPanelViewController.class), any(BiometricUnlockController.class),
                 any(ViewGroup.class), any(KeyguardBypassController.class)))
                 .thenReturn(mStatusBarKeyguardViewManager);