Merge "Create a new window to host car specific sysui"
diff --git a/packages/CarSystemUI/res/layout/sysui_primary_window.xml b/packages/CarSystemUI/res/layout/sysui_primary_window.xml
new file mode 100644
index 0000000..309d9ef
--- /dev/null
+++ b/packages/CarSystemUI/res/layout/sysui_primary_window.xml
@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ 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.
+  -->
+
+<FrameLayout
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    android:background="@android:color/transparent"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent">
+</FrameLayout>
\ No newline at end of file
diff --git a/packages/CarSystemUI/src/com/android/systemui/car/SystemUIPrimaryWindowController.java b/packages/CarSystemUI/src/com/android/systemui/car/SystemUIPrimaryWindowController.java
new file mode 100644
index 0000000..e3e9ab7
--- /dev/null
+++ b/packages/CarSystemUI/src/com/android/systemui/car/SystemUIPrimaryWindowController.java
@@ -0,0 +1,137 @@
+/*
+ * 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.systemui.car;
+
+import static android.view.WindowManager.LayoutParams.LAYOUT_IN_DISPLAY_CUTOUT_MODE_ALWAYS;
+
+import android.content.Context;
+import android.content.res.Resources;
+import android.graphics.PixelFormat;
+import android.graphics.Point;
+import android.os.Binder;
+import android.view.Gravity;
+import android.view.LayoutInflater;
+import android.view.ViewGroup;
+import android.view.WindowManager;
+
+import com.android.systemui.R;
+import com.android.systemui.dagger.qualifiers.Main;
+import com.android.systemui.statusbar.policy.ConfigurationController;
+
+import javax.inject.Inject;
+import javax.inject.Singleton;
+
+/**
+ * Controls the expansion state of the primary window which will contain all of the fullscreen sysui
+ * behavior. This window still has a collapsed state in order to watch for swipe events to expand
+ * this window for the notification panel.
+ */
+@Singleton
+public class SystemUIPrimaryWindowController implements
+        ConfigurationController.ConfigurationListener {
+
+    private final Context mContext;
+    private final Resources mResources;
+    private final WindowManager mWindowManager;
+
+    private final int mStatusBarHeight;
+    private final int mNavBarHeight;
+    private final int mDisplayHeight;
+    private ViewGroup mBaseLayout;
+    private WindowManager.LayoutParams mLp;
+    private WindowManager.LayoutParams mLpChanged;
+
+    @Inject
+    public SystemUIPrimaryWindowController(
+            Context context,
+            @Main Resources resources,
+            WindowManager windowManager,
+            ConfigurationController configurationController
+    ) {
+        mContext = context;
+        mResources = resources;
+        mWindowManager = windowManager;
+
+        Point display = new Point();
+        mWindowManager.getDefaultDisplay().getSize(display);
+        mDisplayHeight = display.y;
+
+        mStatusBarHeight = mResources.getDimensionPixelSize(
+                com.android.internal.R.dimen.status_bar_height);
+        mNavBarHeight = mResources.getDimensionPixelSize(R.dimen.navigation_bar_height);
+
+        mLpChanged = new WindowManager.LayoutParams();
+        mBaseLayout = (ViewGroup) LayoutInflater.from(context)
+                .inflate(R.layout.sysui_primary_window, /* root= */ null, false);
+
+        configurationController.addCallback(this);
+    }
+
+    /** Returns the base view of the primary window. */
+    public ViewGroup getBaseLayout() {
+        return mBaseLayout;
+    }
+
+    /** Attaches the window to the window manager. */
+    public void attach() {
+        // Now that the status bar window encompasses the sliding panel and its
+        // translucent backdrop, the entire thing is made TRANSLUCENT and is
+        // hardware-accelerated.
+        mLp = new WindowManager.LayoutParams(
+                ViewGroup.LayoutParams.MATCH_PARENT,
+                mStatusBarHeight,
+                WindowManager.LayoutParams.TYPE_STATUS_BAR_SUB_PANEL,
+                WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE
+                        | WindowManager.LayoutParams.FLAG_SPLIT_TOUCH
+                        | WindowManager.LayoutParams.FLAG_WATCH_OUTSIDE_TOUCH
+                        | WindowManager.LayoutParams.FLAG_LAYOUT_IN_SCREEN,
+                PixelFormat.TRANSLUCENT);
+        mLp.token = new Binder();
+        mLp.gravity = Gravity.TOP;
+        mLp.setFitWindowInsetsTypes(/* types= */ 0);
+        mLp.softInputMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE;
+        mLp.setTitle("NotificationShade");
+        mLp.packageName = mContext.getPackageName();
+        mLp.layoutInDisplayCutoutMode = LAYOUT_IN_DISPLAY_CUTOUT_MODE_ALWAYS;
+
+        mWindowManager.addView(mBaseLayout, mLp);
+        mLpChanged.copyFrom(mLp);
+    }
+
+    /** Sets the window to the expanded state. */
+    public void setWindowExpanded(boolean expanded) {
+        if (expanded) {
+            // TODO: Update this so that the windowing type gets the full height of the display
+            //  when we use MATCH_PARENT.
+            mLpChanged.height = mDisplayHeight + mNavBarHeight;
+        } else {
+            mLpChanged.height = mStatusBarHeight;
+        }
+        updateWindow();
+    }
+
+    /** Returns {@code true} if the window is expanded */
+    public boolean isWindowExpanded() {
+        return mLp.height != mStatusBarHeight;
+    }
+
+    private void updateWindow() {
+        if (mLp != null && mLp.copyFrom(mLpChanged) != 0) {
+            mWindowManager.updateViewLayout(mBaseLayout, mLp);
+        }
+    }
+}