The nsIDOMFileReader interface provides a way to read data from a file specified by an nsIDOMFile.
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Last changed in Gecko 1.9.2 (Firefox 3.6 / Thunderbird 3.1 / Fennec 1.0)
Inherits from: nsISupports
Implemented by: @mozilla.org/files/filereader;1. To create an instance, use:
var FileReader = Components.classes["@mozilla.org/files/filereader;1"].createInstance(Components.interfaces.nsIDOMFileReader);
This interface implements the DOM FileReader object; see that documentation for details.