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3 commits

Author SHA1 Message Date
Joshua Spence
d6ed9c2f68 Fix an undefined variable
Summary: Identifed by linting with JSHint.

Test Plan: `arc lint`

Reviewers: epriestley, #blessed_reviewers

Reviewed By: epriestley, #blessed_reviewers

Subscribers: Korvin, epriestley

Differential Revision: https://secure.phabricator.com/D11433
2015-01-23 07:22:39 +11:00
Joshua Spence
e768a633b7 Fix various lint issues in rJX
Summary: Ref T6953.

Test Plan: `arc lint`

Reviewers: epriestley, #blessed_reviewers

Reviewed By: epriestley, #blessed_reviewers

Subscribers: Korvin, epriestley

Maniphest Tasks: T6953

Differential Revision: https://secure.phabricator.com/D11376
2015-01-14 07:59:56 +11:00
epriestley
e0087a9f7a Add JX.Leader: synchronization over localStorage
Summary:
Ref T6559. Adds a "JX.Leader" primitive to replace the synchronization over Flash. This does a couple of things:

  - Offers an "onBecomeLeader" event, which we can use to open the WebSocket.
  - Offers an "onReceiveMessage" event, which we can use to dispatch notifications and handle requests to play sounds and send desktop notifications.
  - Offers a "broadcast()" method, which we can use to send desktop notification and sound requests.

Test Plan:
Added some code like this:

```
  if (!statics.leader) {
    statics.leader = true;

    JX.Leader.listen('onBecomeLeader', function() {
      JX.log("This tab is now the leader.");
    });

    JX.Leader.listen('onReceiveBroadcast', function(message, is_leader) {
      JX.log('[' + (is_leader ? 'As Leader' : 'Not Leader') + '] ' + message);
    });

    JX.Leader.start();
  }
```

Then:

  - Saw first tab open become leader reliably in Safari, Chrome, Firefox.
  - Saw new tab become leader reliably when the first tab was closed.
  - Saw broadcast() work as documented and deliver messages with correct leadership-flag and uniqueness.

Reviewers: joshuaspence, btrahan

Reviewed By: btrahan

Subscribers: epriestley

Maniphest Tasks: T6559

Differential Revision: https://secure.phabricator.com/D11235
2015-01-06 17:50:40 -08:00