B2G/Bluetooth/WebBluetooth-v2/Discussion/2014-03-14

Info

Attendees

• BT team: Eric Chou, Gina Yeh, Ben Tian, Shawn Huang, Jamin Liu, Jocelyn Liu
• Gaia: Arthur Chen, Ian Liu, Evelyn Hung, Alive Kuo
• WebAPI: Gene Lian

Time & Location

3pm - 6pm @Utopia

Meeting Minutes

Meeting minutes by Jamin Liu

BT Team Internal Discussion Result

BluetoothManager

• Access adapter in onadapterremoved
  • onadapterremoved(address) -> onadapterremoved(adapter) before adapter is really removed? adapter's attributes are accessible with default values.

(Unchanged) Yes. Remove.

• Remove adapter from adapters[] array or not?
  • gaia has to rebind handlers if adapter is removed from array.

(Unchanged) Yes. Remove.

• Track default adapter added/removed - options
  • +ondefaultadapteradded/ondefaultadapterremoved
  • onadapteradded/removed(adapter, bool isDefault)
  • bool adapter.isDefault

Option 2

BluetoothAdapter

• adapter state
  • add "discovering" and "discoverable"?
  • add "pairing", "connecting", and "connected"?
    • outgoing vs incoming pairing/connection state transition

(Unchanged) No for both. Reason - 1) independent states from enabled/disabled 2) we cannot ensure correct 'pairing'/'connecting' transition for incoming pairing/connection.

• adapter attributes validity
  • are all attributes available after state is "enabled"?

(Unchanged) No. Just forward what we get from backend and we don't ensure the sequence.

• DOMRequest life cycle
  • should gaia hold req reference until stop discovery?
    • YES. gaia should hold reference if req is still needed.
  • does DOMRequest live after onsuccess is fired?
    • YES. the life cycle ends when both gaia and gecko release the req. (by schien)
  • fire onsuccess before or after ondevicefound?

(Unchanged) before. Note BluetoothReplyRunnable frees the DOMRequest object after onsuccess is fired.

• Return BluetoothDevice in pairing event handlers
  • carry correct address
  • what are the value of the device's attributes?

Carry a handle. pros over func ptr - signature & address.

[chrome only]
interface BluetoothPairingObject {
  void setPasskey(DOMString passkey);
  readonly BluetoothDevice device;
}

• Move pairing event handlers into device?

(Unchanged) No.

• Can application start discovery while adapter is discovering?

No. It gets onerror. Applications have to stop current discovery first.

• When adapter.state becomes "disabled", should all its attributes become default values and onattributechanged are fired?

Yes. As state becomes "enabled" for consistency.