Inflate taskbar all apps in abstract slide-in view.

All apps can now be dismissed via the scrim or swiping down. To properly
behave as an AFW, the apps view can no longer be within the taskbar's
layout, and will instead add and remove itself from the drag layer.

Test: Manual
Bug: 204696617
Change-Id: I86a0ffc06faa653c65b3797a57ba6512c6874221

quickstep/src/com/android/launcher3/taskbar/TaskbarAllAppsSlideInView.java

@@ -0,0 +1,101 @@
+/*
+ * Copyright (C) 2022 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.launcher3.taskbar;
+
+import static com.android.launcher3.anim.Interpolators.AGGRESSIVE_EASE;
+
+import android.animation.PropertyValuesHolder;
+import android.content.Context;
+import android.graphics.Rect;
+import android.util.AttributeSet;
+import android.view.MotionEvent;
+
+import com.android.launcher3.Insettable;
+import com.android.launcher3.R;
+import com.android.launcher3.views.AbstractSlideInView;
+
+/** Wrapper for taskbar all apps with slide-in behavior. */
+public class TaskbarAllAppsSlideInView extends
+        AbstractSlideInView<TaskbarActivityContext> implements Insettable {
+
+    private static final int DEFAULT_OPEN_DURATION = 500;
+    private static final int DEFAULT_CLOSE_DURATION = 200;
+
+    private TaskbarAllAppsContainerView mAppsView;
+
+    public TaskbarAllAppsSlideInView(Context context, AttributeSet attrs) {
+        this(context, attrs, 0);
+    }
+
+    public TaskbarAllAppsSlideInView(Context context, AttributeSet attrs,
+            int defStyleAttr) {
+        super(context, attrs, defStyleAttr);
+    }
+
+    /** Opens the all apps view. */
+    public void show() {
+        if (mIsOpen || mOpenCloseAnimator.isRunning()) {
+            return;
+        }
+        mIsOpen = true;
+        attachToContainer();
+
+        mOpenCloseAnimator.setValues(
+                PropertyValuesHolder.ofFloat(TRANSLATION_SHIFT, TRANSLATION_SHIFT_OPENED));
+        mOpenCloseAnimator.setInterpolator(AGGRESSIVE_EASE);
+        mOpenCloseAnimator.setDuration(DEFAULT_OPEN_DURATION).start();
+    }
+
+    /** The apps container inside this view. */
+    public TaskbarAllAppsContainerView getAppsView() {
+        return mAppsView;
+    }
+
+    @Override
+    protected void handleClose(boolean animate) {
+        handleClose(animate, DEFAULT_CLOSE_DURATION);
+    }
+
+    @Override
+    protected boolean isOfType(int type) {
+        return (type & TYPE_TASKBAR_ALL_APPS) != 0;
+    }
+
+    @Override
+    protected void onFinishInflate() {
+        super.onFinishInflate();
+        mAppsView = findViewById(R.id.apps_view);
+        mContent = mAppsView;
+    }
+
+    @Override
+    protected int getScrimColor(Context context) {
+        return context.getColor(R.color.widgets_picker_scrim);
+    }
+
+    @Override
+    public boolean onControllerInterceptTouchEvent(MotionEvent ev) {
+        if (ev.getAction() == MotionEvent.ACTION_DOWN) {
+            mNoIntercept = !mAppsView.shouldContainerScroll(ev);
+        }
+        return super.onControllerInterceptTouchEvent(ev);
+    }
+
+    @Override
+    public void setInsets(Rect insets) {
+        mAppsView.setInsets(insets);
+    }
+}