Used by packaged apps to specify what types of files the app can handle. An app can have
multiple file_handlers, with each one having an identifier, a list of MIME types and/or a list of
file extensions that can be handled. The app can handle a file if it either has a matching file
extension or has a matching MIME type. The app can also handle directories if include_directories
is set. You can use a wildcard "*" in types or extensions to indicate that the app can handle
any file type or "_type_/*" in types to indicate that the app can handle any file with a MIME
type of _type_. Here's an example of specifying file handlers:
"file_handlers": {
"text": {
"types": [
"text/*"
],
},
"image": {
"types": [
"image/png",
"image/jpeg"
],
"extensions": [
"tiff"
],
},
"any": {
"extensions": [
"*",
"include_directories": true
],
}
}
To handle files or directories, apps also need to declare the fileSystem permission. Apps can then be passed files or directories in the app.runtime.onLaunched event - either from the system file manager (currently supported on ChromeOS only) or by providing a path on the command line.