44d2a9585b
by default all content is enabled and displayed, this allows users without javascript enabled to still use the form and understand what is happening. users with javascript enabled will see actions and options disabled until the files selected allow, and show information and warnings about zip files in needed.
49 lines
No EOL
1.4 KiB
JavaScript
49 lines
No EOL
1.4 KiB
JavaScript
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const selectElem = document.querySelector('select[name="collection"]');
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const submitElem = document.querySelector('input[type="submit"]');
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const zipInfo = document.querySelector('span.zip > ul.info');
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const zipWarning = document.querySelector('span.zip > p.error');
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const fileInput = document.querySelector('input[type="file"]')
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document.onreadystatechange = () => {
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if ( document.readyState === "complete") {
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selectElem.disabled = true;
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submitElem.disabled = true;
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zipInfo.hidden = true;
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zipWarning.hidden = true;
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}
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}
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fileInput.onchange = function() {
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if ( this.files.length === 1 ) {
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if ( this.files[0].type === 'application/zip' ) {
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selectElem.disabled = true;
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submitElem.disabled = false;
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zipInfo.hidden = false;
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zipWarning.hidden = true;
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} else if ( this.files[0].type.match('text.*')) {
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selectElem.disabled = false;
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submitElem.disabled = false;
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zipInfo.hidden = true;
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zipWarning.hidden = true;
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}
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}
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if ( this.files.length > 1 ) {
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selectElem.disabled = false;
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submitElem.disabled = false;
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var zips = 0;
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Array.from(this.files).forEach(file => {
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if ( file.name.endsWith(".zip") ) {
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zips++;
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}
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})
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if ( zips > 0 ) {
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zipInfo.hidden = true;
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zipWarning.hidden = false;
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} else {
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zipInfo.hidden = true;
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zipWarning.hidden = true;
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}
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}
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} |