Refactor Bluetooth settings for readability and performance.

Major refactoring of Bluetooth settings classes.
- Moved all functionality from LocalBluetoothManager into new
  LocalBluetoothAdapter and LocalBluetoothPreferences, and into
  existing classes.
- Refactored functionality from BluetoothEventRedirector into new
  BluetoothEventManager class, deleting the original version. New
  version uses a HashMap from action Strings to implementers of the
  BluetoothEventManager.Handler interface.
- Created new BluetoothDiscoveryReceiver to update shared preferences
  timestamp for Bluetooth discovery start/finish. This is the only event
  handling we need to do when the settings app is not visible, so it has
  its own receiver entry in AndroidManifest.xml. Edits are written using
  QueuedWork.singleThreadExecutor(), which BroadcastReceiver knows about
  and will wait for completion, eliminating the need for PendingResult.
- Miscellaneous cleanups to code style and logic for readability.
- Pulled some large switch statement code blocks into new methods.
- Changed all Bluetooth state references to the new BluetoothProfile
  constants.
- Changed use of deprecated Notification constructor in
  BluetoothPairingRequest to use Notification.Builder.
- Moved Utf8ByteLengthFilter helper function from BluetoothNamePreference
  into its own class, and moved test cases into the same package.
- Moved all LocalBluetoothProfileManager functionality related to
  specific profiles into new top-level classes (A2dpProfile, etc.), all
  implementing the LocalBluetoothProfile interface.
- Moved all UI-related methods from CachedBluetoothDevice into the class
  that uses the method, or into the static Utils class for shared methods.

Change-Id: I6d49b7f4ae0c7d7dcf62551ee40b51ecb5fe4f47

2 files changed, 9 insertions, 7 deletions

diff --git a/tests/src/com/android/settings/SettingsHookTests.java b/tests/src/com/android/settings/SettingsHookTests.java
index 5b2ac10..ec438cb 100644
--- a/tests/src/com/android/settings/SettingsHookTests.java
+++ b/tests/src/com/android/settings/SettingsHookTests.java
@@ -93,7 +93,7 @@ public class SettingsHookTests extends ActivityInstrumentationTestCase2<Settings
                 result = true;
             }
         }
-        assertTrue("Intent-filer not found", result);
+        assertTrue("Intent-filter not found", result);
     }
 
     /**
@@ -111,7 +111,7 @@ public class SettingsHookTests extends ActivityInstrumentationTestCase2<Settings
                 result = true;
             }
         }
-        assertTrue("Intent-filer not found", result);
+        assertTrue("Intent-filter not found", result);
     }
 
     /**
@@ -119,6 +119,7 @@ public class SettingsHookTests extends ActivityInstrumentationTestCase2<Settings
      * application.
      */
     public void testOperatorPreferenceAvailable() {
+// TODO: fix this test case to work with fragments
 //        PreferenceGroup root = (PreferenceGroup)mSettings.findPreference(KEY_SETTINGS_ROOT);
 //        Preference operatorPreference = root.findPreference(KEY_SETTINGS_OPERATOR);
 //        assertNotNull(operatorPreference);
@@ -129,6 +130,7 @@ public class SettingsHookTests extends ActivityInstrumentationTestCase2<Settings
      * application.
      */
     public void testManufacturerPreferenceAvailable() {
+// TODO: fix this test case to work with fragments
 //        PreferenceGroup root = (PreferenceGroup)mSettings.findPreference(KEY_SETTINGS_ROOT);
 //        Preference manufacturerHook = root.findPreference(KEY_SETTINGS_MANUFACTURER);
 //        assertNotNull(manufacturerHook);
diff --git a/tests/src/com/android/settings/tests/Utf8ByteLengthFilterTest.java b/tests/src/com/android/settings/bluetooth/Utf8ByteLengthFilterTest.java
index c03f9c0..0ed7812 100644
--- a/tests/src/com/android/settings/tests/Utf8ByteLengthFilterTest.java
+++ b/tests/src/com/android/settings/bluetooth/Utf8ByteLengthFilterTest.java
@@ -14,20 +14,20 @@
  * limitations under the License.
  */
 
-package com.android.settings.tests;
+package com.android.settings.bluetooth;
 
 import android.test.AndroidTestCase;
 import android.text.InputFilter;
 import android.text.SpannableStringBuilder;
 
-import com.android.settings.bluetooth.BluetoothNamePreference;
+import com.android.settings.bluetooth.Utf8ByteLengthFilter;
 
 import dalvik.annotation.TestLevel;
 import dalvik.annotation.TestTargetClass;
 import dalvik.annotation.TestTargetNew;
 import dalvik.annotation.TestTargets;
 
-@TestTargetClass(BluetoothNamePreference.Utf8ByteLengthFilter.class)
+@TestTargetClass(Utf8ByteLengthFilter.class)
 public class Utf8ByteLengthFilterTest extends AndroidTestCase {
 
     @TestTargets({
@@ -39,7 +39,7 @@ public class Utf8ByteLengthFilterTest extends AndroidTestCase {
         ),
         @TestTargetNew(
             level = TestLevel.COMPLETE,
-            method = "BluetoothNamePreference.Utf8ByteLengthFilter",
+            method = "Utf8ByteLengthFilter",
             args = {int.class}
         )
     })
@@ -48,7 +48,7 @@ public class Utf8ByteLengthFilterTest extends AndroidTestCase {
         CharSequence source;
         SpannableStringBuilder dest;
         // Constructor to create a LengthFilter
-        BluetoothNamePreference.Utf8ByteLengthFilter lengthFilter = new BluetoothNamePreference.Utf8ByteLengthFilter(10);
+        InputFilter lengthFilter = new Utf8ByteLengthFilter(10);
         InputFilter[] filters = {lengthFilter};
 
         // filter() implicitly invoked. If the total length > filter length, the filter will