80 行
2.4 KiB
JavaScript
80 行
2.4 KiB
JavaScript
/* xlsx.js (C) 2013-present SheetJS -- https://sheetjs.com */
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const XLSX = require('xlsx');
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const electron = require('electron').remote;
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const EXTENSIONS = "xls|xlsx|xlsm|xlsb|xml|csv|txt|dif|sylk|slk|prn|ods|fods|htm|html".split("|");
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const processWb = function(wb) {
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const HTMLOUT = document.getElementById('htmlout');
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const XPORT = document.getElementById('exportBtn');
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XPORT.disabled = false;
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HTMLOUT.innerHTML = "";
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wb.SheetNames.forEach(function(sheetName) {
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const htmlstr = XLSX.utils.sheet_to_html(wb.Sheets[sheetName],{editable:true});
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HTMLOUT.innerHTML += htmlstr;
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});
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};
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const readFile = function(files) {
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const f = files[0];
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const reader = new FileReader();
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reader.onload = function(e) {
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let data = e.target.result;
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data = new Uint8Array(data);
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processWb(XLSX.read(data, {type: 'array'}));
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};
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reader.readAsArrayBuffer(f);
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};
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const handleReadBtn = async function() {
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const o = await electron.dialog.showOpenDialog({
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title: 'Select a file',
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filters: [{
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name: "Spreadsheets",
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extensions: EXTENSIONS
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}],
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properties: ['openFile']
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});
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if(o.filePaths.length > 0) processWb(XLSX.readFile(o.filePaths[0]));
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};
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const exportXlsx = async function() {
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const HTMLOUT = document.getElementById('htmlout');
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const wb = XLSX.utils.table_to_book(HTMLOUT);
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const o = await electron.dialog.showSaveDialog({
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title: 'Save file as',
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filters: [{
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name: "Spreadsheets",
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extensions: EXTENSIONS
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}]
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});
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console.log(o.filePath);
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XLSX.writeFile(wb, o.filePath);
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electron.dialog.showMessageBox({ message: "Exported data to " + o.filePath, buttons: ["OK"] });
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};
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// add event listeners
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const readBtn = document.getElementById('readBtn');
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const readIn = document.getElementById('readIn');
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const exportBtn = document.getElementById('exportBtn');
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const drop = document.getElementById('drop');
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readBtn.addEventListener('click', handleReadBtn, false);
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readIn.addEventListener('change', (e) => { readFile(e.target.files); }, false);
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exportBtn.addEventListener('click', exportXlsx, false);
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drop.addEventListener('dragenter', (e) => {
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e.stopPropagation();
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e.preventDefault();
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e.dataTransfer.dropEffect = 'copy';
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}, false);
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drop.addEventListener('dragover', (e) => {
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e.stopPropagation();
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e.preventDefault();
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e.dataTransfer.dropEffect = 'copy';
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}, false);
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drop.addEventListener('drop', (e) => {
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e.stopPropagation();
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e.preventDefault();
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readFile(e.dataTransfer.files);
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}, false);
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