leaflet-filelayer

Leaflet.FileLayer
=================

Loads local files (GeoJSON, JSON, GPX, KML) into the map using the HTML5 FileReader API, without server call !

* A simple map control
* The user can browse a file locally
* It is read locally (`FileReader) and converted to GeoJSON
* And loaded as a layer eventually!

Check out the demo !

For GPX and KML files, it currently depends on Tom MacWright's togeojson.js.

![Build Status](https://travis-ci.org/makinacorpus/Leaflet.FileLayer)

Install
-----
In order to use this plugin in your app you can either:
* install it via your favorite package manager:
* npm i leaflet-filelayer
* bower install git://github.com:makinacorpus/Leaflet.FileLayer.git
* download the repository and import the leaflet.filelayer.js file in your app.

Dependencies and compatibilities
-----
In order to use this plugin, you need to have both leaflet and togeojson installed.
If you're using Leaflet < 1, you need to use the version 0.6.0 of this plugin. After that, Leaflet > 1 is required.

Usage
-----

`javascript
var map = L.map('map').fitWorld();
...
L.Control.fileLayerLoad({
// Allows you to use a customized version of L.geoJson.
// For example if you are using the Proj4Leaflet leaflet plugin,
// you can pass L.Proj.geoJson and load the files into the
// L.Proj.GeoJson instead of the L.geoJson.
layer: L.geoJson,
// See http://leafletjs.com/reference.html#geojson-options
layerOptions: {style: {color:'red'}},
// Add to map after loading (default: true) ?
addToMap: true,
// File size limit in kb (default: 1024) ?
fileSizeLimit: 1024,
// Restrict accepted file formats (default: .geojson, .json, .kml, and .gpx) ?
formats: [
'.geojson',
'.kml'
]
}).addTo(map);
`

Events:

* data:loaded (event)

`javascript
var control = L.Control.fileLayerLoad();
control.loader.on('data:loaded', function (event) {
// event.layer gives you access to the layers you just uploaded!

// Add to map layer switcher
layerswitcher.addOverlay(event.layer, event.filename);
});
`

* data:error (error)
`javascript
var control = L.Control.fileLayerLoad();
control.loader.on('data:error', function (error) {
// Do something usefull with the error!
console,error(error);
});
`

Changelog
---------

$3

* Leaflet 1.2.0 compatibility
* Accept json file as input (thanks kkdd)

$3

* Leaflet 1.1.0 compatibility (thanks @thorinii)

$3

* Better plugin packaging and dependencies
* Adding bower support (thanks @george-silva)
* Adding support for custom geoJson layers (thanks @MuellerMatthew)
* Treating json files as geoJson (thanks @Jmuccigr)

$3

* Load multiple files (thanks @jens-duttke)

$3

* Support whitelist for file formats (thanks CJ Cenizal)

$3

* Add data:error event (thanks @joeybaker)
* Fix multiple uploads (thanks @joeybaker)
* Add addToMap` option (thanks @joeybaker)

( Did not release version 0.2 to prevent conflicts with Joey's fork. )

$3

* Initial working version

Authors
-------


Contributions

* Mathieu Leplatre
* Joey Baker http://byjoeybaker.com
* CJ Cenizal
* Jens-duttke
* Jmuccigr
* Matthew Mueller
* George Silva
* Simon Bats
* Opoto
* Lachlan Phillips
* kkdd