1/N Add Controllers for most KeyguardBouncer related views.

This adds Controllers to most of the KeyguardBouncer related views,
though it does not move much (or any) functionality into them.

This is the first step of a few to get View Injection out of the
KeyguardMessageArea. The CL was growing large, and I wanted to find
a good check-in point before continuing.

I also added a "ViewController" utility class in this CL that
simplifies some of the repetetive work I've been finding myself
writing when implementing other Controllers. It is intentionally
left simple, existing only to hook into view lifecycle events.

More work to follow.

Bug: 166448040
Test: manual && atest SystemUITests
Change-Id: Ie59f62e97d979fb753e4a103d37ceca02e327238

1 files changed, 51 insertions, 0 deletions

diff --git a/packages/SystemUI/src/com/android/keyguard/KeyguardRootViewController.java b/packages/SystemUI/src/com/android/keyguard/KeyguardRootViewController.java
new file mode 100644
index 000000000000..79711566251d
--- /dev/null
+++ b/packages/SystemUI/src/com/android/keyguard/KeyguardRootViewController.java
@@ -0,0 +1,51 @@
+/*
+ * 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 android.view.ViewGroup;
+
+import com.android.keyguard.dagger.KeyguardBouncerScope;
+import com.android.keyguard.dagger.RootView;
+import com.android.systemui.statusbar.phone.KeyguardBouncer;
+import com.android.systemui.util.ViewController;
+
+import javax.inject.Inject;
+/** Controller for a {@link KeyguardBouncer}'s Root view. */
+@KeyguardBouncerScope
+public class KeyguardRootViewController extends ViewController {
+    private final ViewGroup mView;
+
+    @Inject
+    public KeyguardRootViewController(@RootView ViewGroup view) {
+        super(view);
+        mView = view;
+    }
+
+    public ViewGroup getView() {
+        return mView;
+    }
+
+    @Override
+    protected void onViewAttached() {
+
+    }
+
+    @Override
+    protected void onViewDetached() {
+
+    }
+}