rsc3/doc-schelp/HelpSource/Classes/Download.scrbl

87 lines
1.9 KiB
Racket

#lang scribble/manual
@(require (for-label racket))
@title{Download}
Fetch a file from a remote URL@section{categories}
Files
@section{related}
Classes/File
@section{description}
Download allows you to download a file from a specified URL
@section{CLASSMETHODS}
@section{private}
qtClass
@section{METHOD}
new
Create and start a new Download.
@section{ARGUMENT}
requestedURL
A link::Classes/String:: containing the URL of the file to download.
@section{ARGUMENT}
localPath
A link::Classes/String:: containing the local path at which to save the downloaded file.
@section{ARGUMENT}
finishedFunc
A link::Classes/Function:: to evaluate when the download is complete.
@section{ARGUMENT}
errorFunc
A link::Classes/Function:: to evaluate if the download fails due to an error.
@section{ARGUMENT}
progressFunc
A link::Classes/Function:: to process the download's progress. This Function will be passed two arguments, the bytes received, and the total bytes.
@section{returns}
A new Download.
@section{METHOD}
cancelAll
Cancel all active Downloads.
@section{INSTANCEMETHODS}
@section{private}
doProgress, doError, doFinished, doOnShutDown, cleanup, startDownload, init
@section{METHOD}
cancel
Cancel the download.
@section{METHOD}
errorFunc
Get or set the error link::Classes/Function::.
@section{METHOD}
finishedFunc
Get or set the download finished link::Classes/Function::.
@section{METHOD}
progressFunc
Get or set the download progress link::Classes/Function::.
@section{EXAMPLES}
@racketblock[
Download("http://art-on-wires.org/wp-content/uploads/2011/03/nick_collins.png", "/tmp/nick.png", {\huzzah.postln;}, {\error.postln}, {|rec, tot| [rec, tot].postln}); // beautify your tmp directory
d = Download("http://scottwilson.ca/files/flame.mp3", "/tmp/flame.mp3", {\huzzah.postln;}, {\error.postln}, {|rec, tot| [rec, tot].postln});
d.cancel; // cancel this
]