Basic infrastructure for the Bluetooth API.

chrome/common/extensions/api/experimental.bluetooth.idl

+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Bluetooth API.
+
+[nodoc] namespace experimental.bluetooth {

[Mihai Parparita -not on Chrome, 2012/03/21 21:48:52]

Antony: Is there an IDL equivalent to the "platforms" option in the JSON schema
(http://code.google.com/codesearch#OAMlx_jo-ck/src/chrome/common/extensions/ap...

[bryeung, 2012/03/22 00:37:04]

I believe I've set this up to NIY for now.  Are you okay with this going in
as-is and being revised when the feature is available?

I've added a TODO.

+  dictionary Device {
+    DOMString address;
+    DOMString name;
+  };
+
+  dictionary Socket {
+    long id;
+  };
+
+  // TODO(bryeung): This is a temporary hack until Blobs are supported
+  dictionary Blob {
+    DOMString data;
+  };
+
+  dictionary OutOfBandPairingData {
+    // Simple Pairing Hash C
+    // Always 16 octets long.
+    // TODO(bryeung): this should really be an octet[]
+    DOMString hash;
+
+    // Simple Pairing Randomizer R
+    // Always 16 octets long.
+    // TODO(bryeung): this should really be an octet[]
+    DOMString randomizer;
+  };
+
+  callback ResultCallback = void (boolean success);
+  callback BooleanCallback = void (boolean result);

[asargent_no_longer_on_chrome, 2012/03/21 21:19:58]

On an email thread I think Mihai had made the suggestion: "Rather than a
separate result parameter to callbacks, the normal pattern is to signal errors
via chrome.extension.lastError (set via the error_ member in ExtensionFunction)"

So you could probably get rid of BooleanCallback, and just have:

 // Reports failures via chrome.extension.lastError.
 callback ResultCallback = void();

and use that in multiple functions below.

[bryeung, 2012/03/21 21:34:14]

Oops!  Thanks for the reminder: I had meant to do that but forgot while figuring
out how the rest of the IDL stuff works.  Thanks.

+  callback AddressCallback = void (DOMString result);
+  callback DevicesCallback = void (Device[] result);
+  callback SocketCallback = void (Socket result);
+  callback DataCallback = void (Blob result);
+  callback OutOfBandPairingDataCallback = void (OutOfBandPairingData data);
+
+  interface Functions {
+    // Checks if the system has bluetooth support.
+    // |callback| : Called with the boolean result.
+    static void isAvailable(BooleanCallback callback);
+
+    // Checks if the system's bluetooth module has power.
+    // |callback| : Called with the boolean result.
+    static void isPowered(BooleanCallback callback);
+
+    // Get the bluetooth address of the system's bluetooth module.
+    // |callback| : Called with the address, or null if there was an error.
+    static void getAddress(AddressCallback callback);
+
+    // Get a list of bluetooth devices that support a service.
+    // |service|  : The UUID of the desired service.
+    // |callback| : Called with an array of Device objects, all of which
+    //              provide |service|.
+    static void getDevicesWithService(
+        DOMString service, DevicesCallback callback);
+
+    // Connect to a service on a device.
+    // |device|   : The target device.
+    // |service|  : The target service UUID.
+    // |callback| : Called when the connection is established with a Socket
+    //              that can be used to communicate with |device|.
+    static void connect(
+        Device device, DOMString service, SocketCallback callback);
+
+    // Close a bluetooth connection.
+    // |socket|   : The socket to disconnect.
+    // |callback| : Called to indicate success or failure.
+    static void disconnect(Socket socket, ResultCallback callback);

[asargent_no_longer_on_chrome, 2012/03/21 21:19:58]

Would it make sense for the callback to be optional for this method? I can
imagine some scenarios where a caller doesn't care about handling disconnect
failure.

[bryeung, 2012/03/21 21:34:14]

I changed all ResultCallback callbacks to be optional.

+
+    // Read data from a bluetooth connection.
+    // |socket|   : The socket to read from.
+    // |callback| : Called with the data when it is available.
+    static void read(Socket socket, DataCallback callback);
+
+    // Write data to a bluetooth connection.
+    // |socket|   : The socket to write to.
+    // |data|     : The data to write.
+    // |callback| : Called to indicate success or failure.
+    static void write(Socket socket, Blob data, ResultCallback callback);
+
+    // Get the local Out of Band Pairing data.
+    // |callback| : Called with the data.
+    static void getOutOfBandPairingData(OutOfBandPairingDataCallback callback);
+
+    // Set the Out of Band Pairing data for the bluetooth device at |address|.
+    // |address|  : The bluetooth address of the device sending the data.
+    // |data|     : The data.
+    // |callback| : Called to indicate success or failure.
+    static void setOutOfBandPairingData(
+        DOMString address, OutOfBandPairingData data, ResultCallback callback);

[asargent_no_longer_on_chrome, 2012/03/21 21:19:58]

same question here - can callback be optional?

[bryeung, 2012/03/21 21:34:14]

Done.

+  };
+
+  interface Events {
+    // Fired when the availability of bluetooth on the system changes.
+    // |available| : True if bluetooth is available, false otherwise.
+    static void onAvailabilityChanged(boolean available);
+
+    // Fired when the power state of bluetooth on the system changes.
+    // |powered| : True if bluetooth is powered, false otherwise.
+    static void onPowerChanged(boolean has_power);
+  };
+};