VolumeZen: Sound & Notifications settings.

- Add sound settings under the newly combined Sound & Notifications
  top-level settings page.
- New slider preferences for setting audio stream volumes.
- Migrate checkbox prefs to switch prefs.
- New settings subpage for touch sounds.
- New settings subpage for "Showing notifications"
- New setting pref for displaying intercepted notifications in zen mode.
- New tri-state lockscreen notifications pref.
- Add priority + sensitivity options to app notification dialog.
- Remove badges on app notifications row, migrate to subtitle text.
- Migrate strings to common spot in strings.xml
- Remove heads up setting.
- Remove tweaks category (unused).
- Clean up notification settings, separate out into a code section per option.
- Clean up _settings.xml files, prefix each pref with option name.
- Add appropriate indexing data to each settings page.

Depends on f/b change Ic30aa575ae07650cee62c8c1d83b6bc69395cf0d

Change-Id: If700385a7d0057f6c4c4bcf6e648dcf88b8ebff2

src/com/android/settings/notification/VolumeSeekBarPreference.java

@@ -0,0 +1,97 @@
+/*
+ * Copyright (C) 2014 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.notification;
+
+import android.content.ContentResolver;
+import android.content.Context;
+import android.media.AudioManager;
+import android.net.Uri;
+import android.preference.PreferenceManager;
+import android.preference.SeekBarPreference;
+import android.preference.SeekBarVolumizer;
+import android.util.AttributeSet;
+import android.util.Log;
+import android.view.View;
+import android.widget.SeekBar;
+
+import com.android.settings.R;
+
+/** A slider preference that directly controls an audio stream volume (no dialog) **/
+public class VolumeSeekBarPreference extends SeekBarPreference
+        implements PreferenceManager.OnActivityStopListener {
+    private static final String TAG = "VolumeSeekBarPreference";
+
+    private final Context mContext;
+
+    private int mStream;
+    private SeekBar mSeekBar;
+    private SeekBarVolumizer mVolumizer;
+    private Callback mCallback;
+
+    public VolumeSeekBarPreference(Context context, AttributeSet attrs) {
+        super(context, attrs);
+        mContext = context;
+    }
+
+    public void setStream(int stream) {
+        mStream = stream;
+    }
+
+    public void setCallback(Callback callback) {
+        mCallback = callback;
+    }
+
+    @Override
+    public void onActivityStop() {
+        if (mVolumizer != null) {
+            mVolumizer.stop();
+        }
+    }
+
+    @Override
+    protected void onBindView(View view) {
+        super.onBindView(view);
+        if (mStream == 0) {
+            Log.w(TAG, "No stream found, not binding volumizer");
+            return;
+        }
+        getPreferenceManager().registerOnActivityStopListener(this);
+        final SeekBar seekBar = (SeekBar) view.findViewById(com.android.internal.R.id.seekbar);
+        if (seekBar == mSeekBar) return;
+        mSeekBar = seekBar;
+        final SeekBarVolumizer.Callback sbvc = new SeekBarVolumizer.Callback() {
+            @Override
+            public void onSampleStarting(SeekBarVolumizer sbv) {
+                if (mCallback != null) {
+                    mCallback.onSampleStarting(sbv);
+                }
+            }
+        };
+        final Uri sampleUri = mStream == AudioManager.STREAM_MUSIC ? getMediaVolumeUri() : null;
+        mVolumizer = new SeekBarVolumizer(mContext, seekBar, mStream, sampleUri, sbvc);
+    }
+
+    private Uri getMediaVolumeUri() {
+        return Uri.parse(ContentResolver.SCHEME_ANDROID_RESOURCE + "://"
+                + mContext.getPackageName()
+                + "/" + R.raw.media_volume);
+    }
+
+    public interface Callback {
+        void onSampleStarting(SeekBarVolumizer sbv);
+    }
+}