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Added documentation on supported notifications and related third party modules

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Thomas Bachmann
2017-01-11 11:19:33 +01:00
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modules/default/newsfeed/README.md
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# Module: News Feed
The `newsfeed ` module is one of the default modules of the MagicMirror.
This module displays news headlines based on an RSS feed.
This module displays news headlines based on an RSS feed. Scrolling through news headlines happens time-based (````updateInterval````), but can also be controlled by sending news feed specific notifications to the module.
## Using the module
### Configuration
To use this module, add it to the modules array in the `config/config.js` file:
````javascript
modules: [
@@ -30,6 +31,51 @@ modules: [
]
````
### Notifications
#### Interacting with the module
MagicMirror's [notification mechanism](https://github.com/MichMich/MagicMirror/tree/master/modules#thissendnotificationnotification-payload) allows to send notifications to the ````newsfeed```` module. The following notifications are supported:
<table width="100%">
<!-- why, markdown... -->
<thead>
<tr>
<th>Notification Identifier</th>
<th width="100%">Description</th>
</tr>
<thead>
<tbody>
<tr>
<td><code>ARTICLE_NEXT</code></td>
<td>Shows the next news title (hiding the summary or previously fully displayed article)</td>
</tr>
<tr>
<td><code>ARTICLE_PREVIOUS</code></td>
<td>Shows the previous news title (hiding the summary or previously fully displayed article)</td>
</tr>
<tr>
<td><code>ARTICLE_MORE_DETAILS</code></td>
<td><p>When received the *first time*, shows the corresponding description of the currently displayed news title.<br />The module expects that the module's configuration option ````showDescription```` is set to ````false```` (default value).</p>
When received a *second consecutive time*, shows the full news article in an IFRAME.<br />
This requires that the news page can be embedded in an IFRAME, e.g. doesn't have the HTTP response header [X-Frame-Options](https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/X-Frame-Options) set to e.g. ````DENY````.</td>
</tr>
<tr>
<td><code>ARTICLE_LESS_DETAILS</code></td>
<td>Hides the summary or full news article and only displays the news title of the currently viewed news item.</td>
</tr>
</tbody>
</table>
Note the payload of the sent notification event is ignored.
#### Example
The following example shows how the next news article title can be displayed on the MagicMirror.
````javascript
this.sendNotification('ARTICLE_NEXT');
````
#### ````newsfeed```` specific notification emitting modules
The third party [MMM-Gestures](https://github.com/thobach/MMM-Gestures) module supports above notifications when moving your hand up, down, left or right in front of a gesture sensor attached to the MagicMirror. See module's readme for more details.
## Configuration options
The following properties can be configured: