Add restricted settings UI in Settings accessibility screeen

If OP_ACCESS_RESTRICTED_SETTINGS is rejected, it means accessibility page
for that app is gray out and app info won't show "unlock restricted settings menu"

If OP_ACCESS_RESTRICTED_SETTINGS is ignored, it means accessibility page
for that app is gray out, but app info shows "unlock restricted settings menu"

If OP_ACCESS_RESTRICTED_SETTINGS is allowed(default), it means users can
access accessibility page for that app.

OP_ACCESS_RESTRICTED_SETTINGS will be changed to ignored if user visited
the restricted settings dialog.

OP_ACCESS_RESTRICTED_SETTINGS will be changed to allowed if user passes
the confirmation screen.

Bug: 202130031
Test: Tested the UI and it works correctly
Change-Id: I3dfb94cee440658b4726a1c3f7265f93cd19ed3e

src/com/android/settings/ActionDisabledByAppOpsHelper.java

@@ -0,0 +1,88 @@
+/*
+ * Copyright (C) 2018 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.settings;
+
+import android.app.Activity;
+import android.content.ActivityNotFoundException;
+import android.content.DialogInterface;
+import android.content.Intent;
+import android.net.Uri;
+import android.text.TextUtils;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.TextView;
+
+import androidx.annotation.VisibleForTesting;
+import androidx.appcompat.app.AlertDialog;
+
+import com.android.settingslib.HelpUtils;
+
+final class ActionDisabledByAppOpsHelper {
+
+    private final ViewGroup mDialogView;
+    private final Activity mActivity;
+
+    ActionDisabledByAppOpsHelper(Activity activity) {
+        mActivity = activity;
+        mDialogView = (ViewGroup) LayoutInflater.from(mActivity).inflate(
+                R.layout.support_details_dialog, null);
+    }
+
+    public AlertDialog.Builder prepareDialogBuilder() {
+        final String helpUrl = mActivity.getString(
+                R.string.help_url_action_disabled_by_restricted_settings);
+        AlertDialog.Builder builder = new AlertDialog.Builder(mActivity)
+                .setPositiveButton(R.string.okay, null)
+                .setView(mDialogView);
+        if (!TextUtils.isEmpty(helpUrl)) {
+            builder.setNeutralButton(R.string.learn_more,
+                    (DialogInterface.OnClickListener) (dialog, which) -> {
+                        final Intent intent = HelpUtils.getHelpIntent(mActivity,
+                                helpUrl, mActivity.getClass().getName());
+                        if (intent != null) {
+                            mActivity.startActivity(intent);
+                        }
+                    });
+        }
+        initializeDialogViews(mDialogView);
+        return builder;
+    }
+
+    public void updateDialog() {
+        initializeDialogViews(mDialogView);
+    }
+
+    private void initializeDialogViews(View root) {
+        setSupportTitle(root);
+        setSupportDetails(root);
+    }
+
+    @VisibleForTesting
+    void setSupportTitle(View root) {
+        final TextView titleView = root.findViewById(R.id.admin_support_dialog_title);
+        if (titleView == null) {
+            return;
+        }
+        titleView.setText(R.string.blocked_by_restricted_settings_title);
+    }
+
+    void setSupportDetails(final View root) {
+        final TextView textView = root.findViewById(R.id.admin_support_msg);
+        textView.setText(R.string.blocked_by_restricted_settings_content);
+    }
+}