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Move EventSource to SharedWorker (#12095) (#12130)
* Move EventSource to SharedWorker (#12095)

Backport #12095

Move EventSource to use a SharedWorker. This prevents issues with HTTP/1.1
open browser connections from preventing gitea from opening multiple tabs.

Also allow setting EVENT_SOURCE_UPDATE_TIME to disable EventSource updating

Fix #11978

Signed-off-by: Andrew Thornton <art27@cantab.net>

Co-authored-by: silverwind <me@silverwind.io>
Co-authored-by: techknowlogick <techknowlogick@gitea.io>

* Bugfix for shared event source

For some reason our eslint configuration is not working correctly
and a bug has become apparent when trying to backport this to 1.12.

Signed-off-by: Andrew Thornton <art27@cantab.net>

* Re-fix #12095 again

Unfortunately some of the suggested changes to #12095 introduced
bugs which due to caching behaviour of sharedworkers were not caught
on simple tests.

These are as follows:

* Changing from simple for loop to use includes here:

```js
  register(port) {
    if (!this.clients.includes(port)) return;

    this.clients.push(port);

    port.postMessage({
      type: 'status',
      message: `registered to ${this.url}`,
    });
  }
```

The additional `!` prevents any clients from being added and should
read:

```js
    if (this.clients.includes(port)) return;
```

* Dropping the use of jQuery `$(...)` selection and using DOM
`querySelector` here:

```js
async function receiveUpdateCount(event) {
  try {
    const data = JSON.parse(event.data);

    const notificationCount = document.querySelector('.notification_count');
    if (data.Count > 0) {
      notificationCount.classList.remove('hidden');
    } else {
      notificationCount.classList.add('hidden');
    }

    notificationCount.text() = `${data.Count}`;
    await updateNotificationTable();
  } catch (error) {
    console.error(error, event);
  }
}
```

Requires that `notificationCount.text()` be changed to use `textContent`
instead.

Signed-off-by: Andrew Thornton <art27@cantab.net>

Co-authored-by: silverwind <me@silverwind.io>
Co-authored-by: techknowlogick <techknowlogick@gitea.io>
2020-07-05 01:08:03 +03:00
..
advanced Move EventSource to SharedWorker (#12095) (#12130) 2020-07-05 01:08:03 +03:00
features Add localization docs (#11411) 2020-05-14 17:33:52 -04:00
help Add FAQ for markdown (#10611) 2020-03-05 09:05:18 -06:00
installation Docs: add AlpineLinux packages (#11446) 2020-05-17 14:09:56 +03:00
upgrade Remove migration support from versions earlier than 1.6.0 (#10026) 2020-01-31 21:42:45 +08:00
usage Add charset handling to backup/restore doc (#11062) 2020-04-13 23:55:20 -03:00
advanced.en-us.md Import docs into main repository (#2874) 2017-11-26 23:44:32 +02:00
advanced.fr-fr.md General documentation cleanup (#3317) 2018-01-08 23:48:42 +01:00
advanced.zh-cn.md Import docs into main repository (#2874) 2017-11-26 23:44:32 +02:00
features.en-us.md Import docs into main repository (#2874) 2017-11-26 23:44:32 +02:00
features.zh-cn.md Import docs into main repository (#2874) 2017-11-26 23:44:32 +02:00
features.zh-tw.md Import docs into main repository (#2874) 2017-11-26 23:44:32 +02:00
help.en-us.md Implement documentation search (#8937) 2019-11-13 18:03:18 +00:00
help.fr-fr.md Implement documentation search (#8937) 2019-11-13 18:03:18 +00:00
help.zh-cn.md Implement documentation search (#8937) 2019-11-13 18:03:18 +00:00
help.zh-tw.md Implement documentation search (#8937) 2019-11-13 18:03:18 +00:00
installation.en-us.md Import docs into main repository (#2874) 2017-11-26 23:44:32 +02:00
installation.fr-fr.md General documentation cleanup (#3317) 2018-01-08 23:48:42 +01:00
installation.zh-cn.md Import docs into main repository (#2874) 2017-11-26 23:44:32 +02:00
installation.zh-tw.md Import docs into main repository (#2874) 2017-11-26 23:44:32 +02:00
upgrade.en-us.md Import docs into main repository (#2874) 2017-11-26 23:44:32 +02:00
upgrade.fr-fr.md General documentation cleanup (#3317) 2018-01-08 23:48:42 +01:00
upgrade.zh-cn.md Import docs into main repository (#2874) 2017-11-26 23:44:32 +02:00
upgrade.zh-tw.md Import docs into main repository (#2874) 2017-11-26 23:44:32 +02:00
usage.en-us.md Import docs into main repository (#2874) 2017-11-26 23:44:32 +02:00
usage.zh-cn.md ZH-CN translation of Usage part (#5086) 2018-10-17 14:19:04 -04:00