# MMM-MBTA

![Example of MMM-page-indicator](./example.mp4)

This [MagicMirror²][mm] Module allows you to have pages in your magic mirror! Want to have more modules in your magic mirror, but want to keep the format? Or, want to have grouped modules that are themed together? Look no further!

## Installation

In your terminal, go to your MagicMirror's Module folder:

```bash
cd ~/MagicMirror/modules
```
Clone this repository:
```bash
git clone https://github.com/edward-shen/MMM-pages.git
```
Configure the module in your config.js file.

\<self-promotion>
To display what page you're on, I'd highly recommend checking out my [page indicator module][page indicator]. 
\<\\self-promotion>

## Using the module

To use this module, add it to the modules array in the `config/config.js` file:
```js
modules: [
    {
        module: 'MMM-pages',
        config: {
                modules:
                    [[ "weatherforecast", "newsfeed"],
                     [ "calendar", "compliments" ]],
                excludes: ["clock", "currentweather", "MMM-page-indicator"],
        }
    }
]
```

## Configuration options

Option|Description
------|-----------
`modules`|A 2D String array of what each module should be on which page. Note that all entries must take their class name (e.g. this module's class name is `MMM-pages`, while the default modules may just have `newsfeed`, without the `MMM-` prefix.<br/>**Expected Value type:** `[ [String, String, ...], [String, String, ...], ...]`.
`excludes`|Which modules should show up all the time.<br/>**Expected Value type:** `[ String, String, ... ]`.
`animationTime`|Fading animation time. Set to `0` for instant change. Value is in millis.<br/>**Expected Value type:** `int`.

For the `module` configuration option, the first element of the outer array should consist of elements that should be on the first page. The second element should consist of elements that should be on the second page, and so forth. 

## Regarding notifications

This module responds to the notification `PAGE_CHANGED`. The payload should be an `integer`. Note that this has strict error checking, so `"3"` will not work, while `3` will. Also do note that to switch to page 1, you need to send `0` to the module. **This uses a zero-based numbering system.**

Let's say that you want to change the indicator to page 3. In your code, you would write:
```js
this.sendNotification("PAGE_CHANGED", 2);
```
This would cause the module to change show that you are on page 3.

You can also just send `PAGE_INCREMENT` or `PAGE_DECREMENT` without any payloads (or with, but it will be ignored) to have the module change the displayed page by one.

This module keeps internal track of how many pages you have, defined by your config in the config file. There is no way to dynamically change the pages you have. If there arises a need, please create an issue.

This module sends one notification, `MAX_PAGES_CHANGED` to assist display modules with how many pages they should display. However, this module does not enforce what page other modules should indicate. This is intentional, because any other module that needs a page change notification should be recieving from the notification system.

## FAQ

- Help! My module is (above/below) another module in the same region but I want it to be somewhere else!

  The order of your `config.js` determines your module location. If you have two modules, both with `position:bottom_bar`, the one that is first listed will appear on top. The rest will appear in the same order you defined them in. If you want this module to be at the very bottom, define this module as the last module in your `config.js` file. If you want it to be on top in that region, make sure no other module is defined before it that has the same region.
  
- Can I make a pull request?

  Please do! Feel free; I love improvements!
  
- I want more config options!

  Please make an issue. Thanks!

[mm]: https://github.com/MichMich/MagicMirror
[page indicator]: https://github.com/edward-shen/MMM-page-indicator