Work profile accessibility fixes

- Remove TextView and use work switches text
- Allow talkback to read recyclerview overlay

Bug: 151884799
Bug: 151803591
Bug: 151274763
Bug: 151585835
Test: Manual
Change-Id: Ieee0d37d0244eb12ecb923d710cbbd6a86281062

src/com/android/launcher3/allapps/WorkModeSwitch.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2018 The Android Open Source Project
+ * 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.
@@ -15,7 +15,13 @@
  */
 package com.android.launcher3.allapps;
 
+import static com.android.launcher3.util.PackageManagerHelper.hasShortcutsPermission;
+
+import android.animation.ObjectAnimator;
+import android.animation.PropertyValuesHolder;
 import android.content.Context;
+import android.content.pm.PackageManager;
+import android.graphics.Rect;
 import android.os.AsyncTask;
 import android.os.Process;
 import android.os.UserHandle;
@@ -24,28 +30,45 @@ import android.util.AttributeSet;
 import android.view.MotionEvent;
 import android.widget.Switch;
 
+import com.android.launcher3.Insettable;
+import com.android.launcher3.Launcher;
+import com.android.launcher3.R;
 import com.android.launcher3.Utilities;
 import com.android.launcher3.pm.UserCache;
 
 import java.lang.ref.WeakReference;
 
-public class WorkModeSwitch extends Switch {
+/**
+ * Work profile toggle switch shown at the bottom of AllApps work tab
+ */
+public class WorkModeSwitch extends Switch implements Insettable {
+
+    private Rect mInsets = new Rect();
+    protected ObjectAnimator mOpenCloseAnimator;
+
 
     public WorkModeSwitch(Context context) {
         super(context);
+        init();
     }
 
     public WorkModeSwitch(Context context, AttributeSet attrs) {
         super(context, attrs);
+        init();
     }
 
     public WorkModeSwitch(Context context, AttributeSet attrs, int defStyleAttr) {
         super(context, attrs, defStyleAttr);
+        init();
+    }
+
+    private void init() {
+        mOpenCloseAnimator = ObjectAnimator.ofPropertyValuesHolder(this);
     }
 
     @Override
     public void setChecked(boolean checked) {
-        // No-op, do not change the checked state until broadcast is received.
+
     }
 
     @Override
@@ -55,14 +78,23 @@ public class WorkModeSwitch extends Switch {
 
     private void setCheckedInternal(boolean checked) {
         super.setChecked(checked);
+        setCompoundDrawablesWithIntrinsicBounds(
+                checked ? R.drawable.ic_corp : R.drawable.ic_corp_off, 0, 0, 0);
     }
 
     public void refresh() {
+        if (!shouldShowWorkSwitch()) return;
         UserCache userManager = UserCache.INSTANCE.get(getContext());
         setCheckedInternal(!userManager.isAnyProfileQuietModeEnabled());
         setEnabled(true);
     }
 
+    @Override
+    protected void onLayout(boolean changed, int l, int t, int r, int b) {
+        super.onLayout(changed, l, t, r, b);
+        this.setVisibility(shouldShowWorkSwitch() ? VISIBLE : GONE);
+    }
+
     @Override
     public boolean onTouchEvent(MotionEvent ev) {
         return ev.getActionMasked() == MotionEvent.ACTION_MOVE || super.onTouchEvent(ev);
@@ -72,6 +104,24 @@ public class WorkModeSwitch extends Switch {
         new SetQuietModeEnabledAsyncTask(enabled, new WeakReference<>(this)).execute();
     }
 
+    @Override
+    public void setInsets(Rect insets) {
+        int bottomInset = insets.bottom - mInsets.bottom;
+        mInsets.set(insets);
+        setPadding(getPaddingLeft(), getPaddingTop(), getPaddingRight(),
+                getPaddingBottom() + bottomInset);
+    }
+
+    /**
+     * Animates in/out work profile toggle panel based on the tab user is on
+     */
+    public void setWorkTabVisible(boolean workTabVisible) {
+        if (!shouldShowWorkSwitch()) return;
+
+        mOpenCloseAnimator.setValues(PropertyValuesHolder.ofFloat(ALPHA, workTabVisible ? 1 : 0));
+        mOpenCloseAnimator.start();
+    }
+
     private static final class SetQuietModeEnabledAsyncTask
             extends AsyncTask<Void, Void, Boolean> {
 
@@ -122,4 +172,11 @@ public class WorkModeSwitch extends Switch {
             }
         }
     }
+
+    private boolean shouldShowWorkSwitch() {
+        Launcher launcher = Launcher.getLauncher(getContext());
+        return Utilities.ATLEAST_P && (hasShortcutsPermission(launcher)
+                || launcher.checkSelfPermission("android.permission.MODIFY_QUIET_MODE")
+                == PackageManager.PERMISSION_GRANTED);
+    }
 }