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Example-15-DragDrop.html
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Example-15-DragDrop.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta encoding="utf-8">
<title>XSLT</title>
</head>
<body>
<style type="text/css">
#dropzone {
border: 5px solid blue;
width: 200px;
height: 100px;
}
#dropzone:hover{
}
</style>
<div id="drop" ondrop="dropHandler(event);" ondragover="dragOverHandler(event);">
<p>Drag one or more XML-based files to this <i>here</i>.</p>
</div>
<p id="output"></p>
<script type="text/javascript">
const parser = new DOMParser();
const xsltProcessor = new XSLTProcessor();
const drop = document.getElementByID("drop");
drop.addEventListender("drop", (event) => {
event.preventDefault();
if (event.dataTransfer.items) {
const items = event.dataTransfer.items;
for (const item of items) {
//restrict to XSLT or XML files only
if (item.kind === 'file' && (item.type === "text/xml" || item.type === "application/xslt+xml")) {
const file = item.getAsFile();
const reader = new FileReader();
reader.readAsText(file);
//load
reader.addEventListener("load", function(){
console.log("load - dataTransfer.item");
let xsl = parser.parseFromString(reader.result, "application/xml");
console.log(xsl);
//xsltProcessor.importStylesheet(xsl);
}, false);
//error
reader.addEventListener("error", function(){
console.log("error - dataTransfer.item");
}, false);
}else{
console.log("this is not an XSLT or XML file");
return;
}
}
}
if(event.dataTransfer.files){
const files = event.dataTransfer.files;
for (const file of files){
if((file.type === "text/xml" || file.type === "application/xslt+xml")){
console.log(file);
const reader = new FileReader();
reader.readAsText(file);
//load
reader.addEventListener("load", function(){
console.log("load - dataTransfer.files");
let xsl = parser.parseFromString(reader.result, "application/xml");
const output = document.getElementById("output");
output.appendChild(xsl.documentElement);
//xsltProcessor.importStylesheet(xsl);
}, false);
//error
reader.addEventListener("error", function(){
console.log("error - dataTransfer.files");
}, false);
}
}
});
drop.addEventListener("drag", (event) => {
event.preventDefault();
console.log("dragover");
});
(function(){
function documentLoaded(){
if(!('DOMParser' in window)){
console.log('DOMParser does not appear to be available in this browser. Please try another.');
return;
}else{
console.log('DOMParser is available in this browser.');
}
}
window.addEventListener("load", documentLoaded, false);
}) ();
</script>
</body>
</html>