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|
Download : QObject {
classvar requests;
var <>finishedFunc, <>errorFunc, <>progressFunc;
var error = false, started = false;
*new {|requestedURL, localPath, finishedFunc, errorFunc, progressFunc|
^super.new.init(requestedURL, localPath, finishedFunc, errorFunc, progressFunc);
}
*qtClass { ^'QtDownload' }
init {|requestedURL, localPath, argfinFunc, argerrFunc, argprogFunc|
localPath = localPath ?? { Platform.defaultTempDir +/+ "download" };
finishedFunc = argfinFunc;
errorFunc = argerrFunc;
progressFunc = argprogFunc;
if(requests.isNil, { requests = Set.new; });
requests.add(this);
this.startDownload(requestedURL, localPath);
}
cancel {
"Download of % cancelled\n".postf(this.getProperty(\source));
this.invokeMethod(\cancel);
this.cleanup;
}
*cancelAll { requests.do({|dl| dl.cancel }); }
// private
doOnShutDown { this.cancel }
startDownload { |requestedURL, localPath|
if(started.not, {
started = true;
ShutDown.add(this);
this.setProperty(\source, requestedURL);
this.setProperty(\destination, localPath);
this.connectMethod('doFinished()', 'doFinished');
this.connectMethod('doError()', 'doError');
this.connectMethod('doProgress(int, int)', 'doProgress');
this.invokeMethod(\download);
});
}
doFinished {
"Download of % finished\n".postf(this.getProperty(\source));
this.cleanup;
if(error.not, {
finishedFunc.value;
});
}
cleanup {
requests.remove(this);
heap.remove(this);
ShutDown.remove(this);
}
doError {
error = true;
this.cleanup;
errorFunc.value;
}
doProgress {|bytesReceived, bytesTotal|
if(error.not, {
progressFunc.value(bytesReceived, bytesTotal);
});
}
}
|
