Refine NFC charging APIs

- rename WlcLDeviceInfo to WlcListenerDeviceInfo
- add javadoc for methods in WlcListenerDeviceInfo
- use IntDef for WlcListenerDeviceInfo#getState
- change productId from double to int
- rename enableWlc to setWlcEnabled

Bug: 318483507
Test: Compiles
Change-Id: I411fcc7bd63b3eb62ba2c833d8d76a8e1408199f
diff --git a/nfc/api/current.txt b/nfc/api/current.txt
index 7573474..1046d8e9 100644
--- a/nfc/api/current.txt
+++ b/nfc/api/current.txt
@@ -72,7 +72,7 @@
     method public void enableReaderMode(android.app.Activity, android.nfc.NfcAdapter.ReaderCallback, int, android.os.Bundle);
     method public static android.nfc.NfcAdapter getDefaultAdapter(android.content.Context);
     method @Nullable public android.nfc.NfcAntennaInfo getNfcAntennaInfo();
-    method @FlaggedApi("android.nfc.enable_nfc_charging") @Nullable public android.nfc.WlcLDeviceInfo getWlcLDeviceInfo();
+    method @FlaggedApi("android.nfc.enable_nfc_charging") @Nullable public android.nfc.WlcListenerDeviceInfo getWlcListenerDeviceInfo();
     method public boolean ignore(android.nfc.Tag, int, android.nfc.NfcAdapter.OnTagRemovedListener, android.os.Handler);
     method public boolean isEnabled();
     method @FlaggedApi("android.nfc.nfc_observe_mode") public boolean isObserveModeSupported();
@@ -175,18 +175,18 @@
     ctor public TagLostException(String);
   }
 
-  @FlaggedApi("android.nfc.enable_nfc_charging") public final class WlcLDeviceInfo implements android.os.Parcelable {
-    ctor public WlcLDeviceInfo(double, double, double, int);
+  @FlaggedApi("android.nfc.enable_nfc_charging") public final class WlcListenerDeviceInfo implements android.os.Parcelable {
+    ctor public WlcListenerDeviceInfo(int, double, double, int);
     method public int describeContents();
-    method public double getBatteryLevel();
-    method public double getProductId();
+    method @FloatRange(from=0.0, to=100.0) public double getBatteryLevel();
+    method public int getProductId();
     method public int getState();
     method public double getTemperature();
     method public void writeToParcel(@NonNull android.os.Parcel, int);
-    field public static final int CONNECTED_CHARGING = 2; // 0x2
-    field public static final int CONNECTED_DISCHARGING = 3; // 0x3
-    field @NonNull public static final android.os.Parcelable.Creator<android.nfc.WlcLDeviceInfo> CREATOR;
-    field public static final int DISCONNECTED = 1; // 0x1
+    field @NonNull public static final android.os.Parcelable.Creator<android.nfc.WlcListenerDeviceInfo> CREATOR;
+    field public static final int STATE_CONNECTED_CHARGING = 2; // 0x2
+    field public static final int STATE_CONNECTED_DISCHARGING = 3; // 0x3
+    field public static final int STATE_DISCONNECTED = 1; // 0x1
   }
 
 }
diff --git a/nfc/api/system-current.txt b/nfc/api/system-current.txt
index 40672a1..dc2a625 100644
--- a/nfc/api/system-current.txt
+++ b/nfc/api/system-current.txt
@@ -8,7 +8,6 @@
     method @RequiresPermission(android.Manifest.permission.WRITE_SECURE_SETTINGS) public boolean enable();
     method @FlaggedApi("android.nfc.enable_nfc_reader_option") @RequiresPermission(android.Manifest.permission.WRITE_SECURE_SETTINGS) public boolean enableReaderOption(boolean);
     method @RequiresPermission(android.Manifest.permission.WRITE_SECURE_SETTINGS) public boolean enableSecureNfc(boolean);
-    method @FlaggedApi("android.nfc.enable_nfc_charging") @RequiresPermission(android.Manifest.permission.WRITE_SECURE_SETTINGS) public boolean enableWlc(boolean);
     method @FlaggedApi("android.nfc.enable_nfc_mainline") public int getAdapterState();
     method @NonNull @RequiresPermission(android.Manifest.permission.WRITE_SECURE_SETTINGS) public java.util.Map<java.lang.String,java.lang.Boolean> getTagIntentAppPreferenceForUser(int);
     method @RequiresPermission(android.Manifest.permission.NFC_SET_CONTROLLER_ALWAYS_ON) public boolean isControllerAlwaysOn();
@@ -20,6 +19,7 @@
     method @RequiresPermission(android.Manifest.permission.NFC_SET_CONTROLLER_ALWAYS_ON) public boolean setControllerAlwaysOn(boolean);
     method @FlaggedApi("android.nfc.enable_nfc_mainline") @RequiresPermission(android.Manifest.permission.WRITE_SECURE_SETTINGS) public void setReaderMode(boolean);
     method @RequiresPermission(android.Manifest.permission.WRITE_SECURE_SETTINGS) public int setTagIntentAppPreferenceForUser(int, @NonNull String, boolean);
+    method @FlaggedApi("android.nfc.enable_nfc_charging") @RequiresPermission(android.Manifest.permission.WRITE_SECURE_SETTINGS) public boolean setWlcEnabled(boolean);
     method @RequiresPermission(android.Manifest.permission.NFC_SET_CONTROLLER_ALWAYS_ON) public void unregisterControllerAlwaysOnListener(@NonNull android.nfc.NfcAdapter.ControllerAlwaysOnListener);
     method @FlaggedApi("android.nfc.enable_nfc_charging") public void unregisterWlcStateListener(@NonNull android.nfc.NfcAdapter.WlcStateListener);
     field @FlaggedApi("android.nfc.enable_nfc_mainline") public static final String ACTION_REQUIRE_UNLOCK_FOR_NFC = "android.nfc.action.REQUIRE_UNLOCK_FOR_NFC";
@@ -37,7 +37,7 @@
   }
 
   @FlaggedApi("android.nfc.enable_nfc_charging") public static interface NfcAdapter.WlcStateListener {
-    method public void onWlcStateChanged(@NonNull android.nfc.WlcLDeviceInfo);
+    method public void onWlcStateChanged(@NonNull android.nfc.WlcListenerDeviceInfo);
   }
 
 }