Downloading Attachments

Most of the attachment methods on scenarios return an Attachment or list of Attachments.

Along with methods to get the filename, description and other attachment properties, this object has a download() method, which when called downloads the attachment using the web browser's normal download dialog. This can be used to implement a simple download button:

...
.notify(function (scenario) {
    var readme = scenario.getAppAttachment('readme.txt');
    if (readme) {
        $('button#download-readme').off('click')
            .prop('disabled', false);
        $('button#download-readme').click(function () {
            readme.download();
        });
    } else {
        // No readme file available.
        $('button#download-readme').prop('disabled', true);
    }
})
...

Note The click handler needs to be installed within the notify callback in order to access the attachment, and because this callback is invoked whenever the attachments change, the previous click handler should be removed before installing a new one.

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