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Add another example to the section about dealing with async

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JC Brand 2017-10-23 12:15:57 +00:00
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28
docs/source/plugin_development.rst
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@ -268,9 +268,29 @@ There are two ways of waiting for the right time before executing your code.
You can either listen for certain events, or you can wait for promises to
resolve.
For example, in the ``Bookmarks`` plugin (in
`src/converse-bookmarks.js <https://github.com/jcbrand/converse.js/blob/6c3aa34c23d97d679823a64376418cd0f40a8b94/src/converse-bookmarks.js#L528>`_),
before bookmarks can be fetched and shown to the user, we first have to wait until
For example, when you want to query the message archive between you and a
friend, you would call ``this._converse.api.archive.query({'with': 'friend@example.org'});``
However, simply calling this immediately in the ``initialize`` method of your plugin will
not work, since the user is not logged in yet.
In this case, you should first listen for the ``connection`` event, and then do your query, like so:
.. code-block:: javascript
converse.plugins.add('myplugin', {
initialize: function () {
var _converse = this._converse;
_converse.on('connected', function () {
_converse.api.archive.query({'with': 'admin2@localhost'});
});
}
});
Another example is in the ``Bookmarks`` plugin (in
`src/converse-bookmarks.js <https://github.com/jcbrand/converse.js/blob/6c3aa34c23d97d679823a64376418cd0f40a8b94/src/converse-bookmarks.js#L528>`_).
Before bookmarks can be fetched and shown to the user, we first have to wait until
the `"Rooms"` panel of the ``ControlBox`` has been rendered and inserted into
the DOM. Otherwise we have no place to show the bookmarks yet.
@ -291,7 +311,7 @@ and ``roomsPanelRendered`` promises have been resolved before it calls the
This way, we know that we have everything in place and set up correctly before
fetching the bookmarks.
As another example, there is also the following code in the ``initialize``
As yet another example, there is also the following code in the ``initialize``
method of the plugin:
.. code-block:: javascript