# LMathPluginAPI

This is a documentation-ish for the `LMathPluginAPI` object, revealed to plugins at the init phase.

## Common
These methods and variables are available on both the backend part and the frontend part.

### api.getLogger()
Returns the `log4js` logger.

### api.getVersion()
Returns current L'Math version.

### api.getSettings()
Returns the settings object. If you need to modify settings, please see ___ (WIP).

### api.getUserSetting()
Returns the user settings object. If you need to modify settings, please see ___ (WIP).

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### api.events
The event-specific API
#### events.on(eventName, callback)
Allows you to listen to L'Math-specific events.
#### events.fire(eventName, eventData)
Allows you to fire a custom-named event. The data will be passed as 

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### api.messages
The messaging-specific API
#### messages.on(messageName, callback)
Allows you to listen to plugin-specific IPC messages between the backend and the frontend.
Any data sent will be passed as an argument to the callback function.
**Just like with regular ipc messaging, you can't send functions or other non-json types.**
#### messages.send(messageName, messageData)
Allows you to send plugin-specific IPC messages between the backend and the frontend.
The messageData object will be converted to JSON and passed as a parsed object to any listeners on the other process.
**Just like with regular ipc messaging, you can't send functions or other non-json types.**



## Backend

### events

* `fileOpened`
    * Called when a file has been succesfully opened 
    * Event data:
        * `file` - the absolute path to the file
        * `content` - a brief content description of the file
* `fileSaved`
    * Called when a file has been succesfully saved
    * Event data:
        * `file` - the absolute path to the file

## Frontend

### events
* `formulaRender`
    * Called before a LaTeX formula is sent to the renderer
    * Event data:
        * `latex` - the LaTeX input, **can be modified**
* `pageSave`
    * Called before saving the contents of a page 
    * Event data:
        * `content` - the HTML content, **can be modified**
* `pageLoad`
    * Called before loading a page 
    * Event data 
        * `pageId` - the id of the page to be loaded
* `pageLoaded`
    * Called when a page has been loaded and is about to be shown
    * Event data
        * `content` - the HTML content, **can be modified**