Add activities to support voice settings.

Adds Voice Interaction Activities for:
- Do not disturb mode (with interaction)
- Battery Saver mode
- Airplane mode

Change-Id: I4480dc3a30975d94b71714ff58fbeebddfbc1c58

src/com/android/settings/utils/VoiceSelection.java

@@ -0,0 +1,74 @@
+/*
+ * Copyright (C) 2015 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.utils;
+
+import android.app.VoiceInteractor.PickOptionRequest.Option;
+import android.os.Bundle;
+import android.text.TextUtils;
+
+/**
+ * Model for a single item that can be selected by a {@link VoiceSelectionFragment}.
+ * Each item consists of a visual label and several alternative synonyms for the item
+ * that can be used to identify the item by voice.
+ */
+public class VoiceSelection {
+    final CharSequence mLabel;
+    final CharSequence[] mSynonyms;
+
+    /**
+     * Created a new selectable item with a visual label and a set of synonyms.
+     */
+    public VoiceSelection(CharSequence label, CharSequence synonyms) {
+        mLabel = label;
+        mSynonyms = TextUtils.split(synonyms.toString(), ",");
+    }
+
+    /**
+     * Created a new selectable item with a visual label and no synonyms.
+     */
+    public VoiceSelection(CharSequence label) {
+        mLabel = label;
+        mSynonyms = null;
+    }
+
+    public CharSequence getLabel() {
+        return mLabel;
+    }
+
+    public CharSequence[] getSynonyms() {
+        return mSynonyms;
+    }
+
+    Option toOption(int index) {
+        Option result = new Option(mLabel);
+        Bundle extras = new Bundle();
+        extras.putInt("index", index);
+        result.setExtras(extras);
+
+        for (CharSequence synonym : mSynonyms) {
+            result.addSynonym(synonym);
+        }
+        return result;
+    }
+
+    /**
+     * Listener interface for when an item is selected.
+     */
+    public interface OnItemSelectedListener {
+        abstract void onItemSelected(int position, VoiceSelection selection);
+    };
+}