Add check for DISALLOW_DEBUGGING_FEATURES restriction

- if the user has restriction for the action
  DISALLOW_DEBUGGING_FEATURES, remove the preference for taking bug
  report and the switch preference to enable bug report shortcut in the
  power key.
- refactor DevelopmentSettings to use preference controller for Take bug
  report and enable bug report in power key.

Fixes: 27145643
Test: make RunSettingsRoboTests

Change-Id: I18784d218d37956130c33f527d514ab703727397

src/com/android/settings/development/BugReportPreferenceController.java

@@ -0,0 +1,62 @@
+/*
+ * Copyright (C) 2016 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.development;
+
+import android.content.Context;
+import android.os.UserManager;
+import android.support.v7.preference.Preference;
+import android.support.v7.preference.PreferenceScreen;
+
+import com.android.settings.core.PreferenceController;
+
+public class BugReportPreferenceController extends PreferenceController {
+
+    private static final String KEY_BUGREPORT = "bugreport";
+
+    private UserManager mUserManager;
+    private Preference mPreference;
+
+    public BugReportPreferenceController(Context context) {
+        super(context);
+        mUserManager = (UserManager) context.getSystemService(Context.USER_SERVICE);
+    }
+
+    @Override
+    public void displayPreference(PreferenceScreen screen) {
+        super.displayPreference(screen);
+        if (isAvailable()) {
+            mPreference = screen.findPreference(KEY_BUGREPORT);
+        }
+    }
+
+    @Override
+    public String getPreferenceKey() {
+        return KEY_BUGREPORT;
+    }
+
+    @Override
+    public boolean isAvailable() {
+        return !mUserManager.hasUserRestriction(UserManager.DISALLOW_DEBUGGING_FEATURES);
+    }
+
+    public void enablePreference(boolean enabled) {
+        if (isAvailable()) {
+            mPreference.setEnabled(enabled);
+        }
+    }
+
+}