//OpenForum/Actions/SaveImage/save-canvas.jsfunction saveCanvas(pageName,fileName,canvas) {
var data = canvas.toDataURL();
data = data.substring(22);
var post = new Post();
post.addItem("data",data);
post.addItem("fileName",fileName);
post.addItem("pageName",pageName);
JSON.post("/OpenForum/Actions/SaveImage","save",post.getData()).go();
}//OpenForum/Actions/SaveImage/post.sjs//Take base64 image and convert to image file
dec = Packages.javax.xml.bind.DatatypeConverter;
data = transaction.getParameter("data");
fileName = transaction.getParameter("fileName");
pageName = transaction.getParameter("pageName");
var outStream = file.getAttachmentOutputStream(pageName,fileName);
outStream.write( dec.parseBase64Binary(data) );
outStream.flush();
outStream.close();
var result = {result: "ok", message: "Saved "+pageName+"/"+fileName};
transaction.sendPage( JSON.stringify(result) );
