423 lines
17 KiB
JavaScript
423 lines
17 KiB
JavaScript
/* OpenTally: Open-source election vote counting
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* Copyright © 2021 Lee Yingtong Li (RunasSudo)
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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function clickAdvancedOptions() {
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if (document.getElementById('divAdvancedOptions').style.display === 'none') {
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document.getElementById('divAdvancedOptions').style.display = 'grid';
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document.getElementById('btnAdvancedOptions').innerHTML = 'Hide advanced options';
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} else {
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document.getElementById('divAdvancedOptions').style.display = 'none';
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document.getElementById('btnAdvancedOptions').innerHTML = 'Show advanced options';
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}
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}
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var tblResult = document.getElementById('result');
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var divLogs2 = document.getElementById('resultLogs2');
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var olStageComments;
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var worker = new Worker('worker.js');
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worker.onmessage = function(evt) {
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if (evt.data.type === 'init') {
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document.getElementById('spanRevNum').innerText = evt.data.version;
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document.getElementById('divLoading').style.display = 'none';
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document.getElementById('divUI').style.display = 'block';
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} else if (evt.data.type === 'initResultsTable') {
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tblResult.innerHTML = evt.data.content;
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divLogs2.innerHTML = '<p>Stage comments:</p>';
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olStageComments = document.createElement('ol');
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divLogs2.append(olStageComments);
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} else if (evt.data.type === 'describeCount') {
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document.getElementById('resultLogs1').innerHTML = evt.data.content;
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} else if (evt.data.type === 'updateResultsTable') {
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for (let i = 0; i < evt.data.result.length; i++) {
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if (evt.data.result[i]) {
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tblResult.rows[i].insertAdjacentHTML('beforeend', evt.data.result[i]);
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// Update candidate status
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if (i >= 3 && i % 2 == 1) {
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if (tblResult.rows[i].lastElementChild.classList.contains('elected')) {
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tblResult.rows[i].cells[0].classList.add('elected');
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} else {
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tblResult.rows[i].cells[0].classList.remove('elected');
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}
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}
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}
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}
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} else if (evt.data.type === 'updateStageComments') {
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let elLi = document.createElement('li');
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elLi.innerHTML = evt.data.comment;
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olStageComments.append(elLi);
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} else if (evt.data.type === 'finalResultSummary') {
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divLogs2.insertAdjacentHTML('beforeend', evt.data.summary);
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document.getElementById('printPane').style.display = 'block';
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} else if (evt.data.type === 'requireInput') {
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let response = window.prompt(evt.data.message);
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while (response === null) {
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response = window.prompt(evt.data.message);
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}
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worker.postMessage({'type': 'userInput', 'response': response});
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}
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}
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worker.onerror = function(evt) {
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alert('An unknown error occurred while counting the votes. More details may be available in the browser\'s developer console.');
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}
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async function clickCount() {
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if (document.getElementById('bltFile').files.length === 0) {
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return;
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}
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// Read BLT file
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let filePath = document.getElementById('bltFile').value;
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filePath = filePath.substring(Math.max(filePath.lastIndexOf('\\'), filePath.lastIndexOf('/')) + 1);
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let bltFile = document.getElementById('bltFile').files[0];
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let electionData = await bltFile.text();
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// Init STV options
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let optsStr = [
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document.getElementById('chkRoundTVs').checked ? parseInt(document.getElementById('txtRoundTVs').value) : null,
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document.getElementById('chkRoundWeights').checked ? parseInt(document.getElementById('txtRoundWeights').value) : null,
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document.getElementById('chkRoundVotes').checked ? parseInt(document.getElementById('txtRoundVotes').value) : null,
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document.getElementById('chkRoundQuota').checked ? parseInt(document.getElementById('txtRoundQuota').value) : null,
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document.getElementById('selSumTransfers').value,
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document.getElementById('chkNormaliseBallots').checked,
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document.getElementById('selQuota').value,
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document.getElementById('selQuotaCriterion').value,
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document.getElementById('selQuotaMode').value,
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document.getElementById('selTies').value.split(','),
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document.getElementById('selTransfers').value,
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document.getElementById('selSurplus').value,
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document.getElementById('selPapers').value == 'transferable',
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document.getElementById('selExclusion').value,
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document.getElementById('chkBulkExclusion').checked,
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document.getElementById('chkDeferSurpluses').checked,
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parseInt(document.getElementById('txtPPDP').value),
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];
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// Dispatch to worker
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worker.postMessage({
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'type': 'countElection',
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'electionData': electionData,
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'optsStr': optsStr,
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'filePath': filePath,
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'numbers': document.getElementById('selNumbers').value,
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'decimals': document.getElementById('txtDP').value,
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'normaliseBallots': document.getElementById('chkNormaliseBallots').checked,
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});
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}
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// Print logic
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async function printResult() {
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let printableWidth; // Printable width in CSS pixels
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let paperSize = document.getElementById('selPaperSize').value;
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if (paperSize === 'A4') {
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printableWidth = (29.7 - 2) * 96 / 2.54;
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} else if (paperSize === 'A3') {
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printableWidth = (42.0 - 2) * 96 / 2.54;
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} else if (paperSize === 'letter') {
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printableWidth = (27.9 - 2) * 96 / 2.54;
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}
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printableWidth = Math.round(printableWidth);
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let wprint = window.open('');
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wprint.document.title = 'OpenTally Report';
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// Add stylesheets
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let numToLoad = 0;
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let numLoaded = -1;
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function onLoadStylesheet() {
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numLoaded++;
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if (numLoaded == numToLoad) {
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wprint.print();
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}
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}
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for (let elCSSBase of document.querySelectorAll('head link')) {
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numToLoad++;
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let elCSS = wprint.document.createElement('link');
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elCSS.rel = elCSSBase.rel;
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elCSS.type = elCSSBase.type;
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if (elCSSBase.href.endsWith('?v=GITVERSION')) {
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elCSS.href = elCSSBase.href.replace('?v=GITVERSION', '?v=' + Math.random());
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} else {
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elCSS.href = elCSSBase.href;
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}
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elCSS.onload = onLoadStylesheet;
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wprint.document.head.appendChild(elCSS);
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}
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// Configure printing
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let elStyle = wprint.document.createElement('style');
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elStyle.innerHTML = '@page { size: ' + paperSize + ' landscape; margin: 1cm; } @media print { body { padding: 0; } }';
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wprint.document.head.appendChild(elStyle);
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let elContainer = wprint.document.createElement('div');
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elContainer.id = 'printContainer';
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elContainer.style.width = printableWidth + 'px';
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wprint.document.body.appendChild(elContainer);
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// Copy result logs 1
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let divResultLogs1 = document.getElementById('resultLogs1');
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let divResultLogs2 = wprint.document.createElement('div');
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divResultLogs2.innerHTML = divResultLogs1.innerHTML;
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elContainer.appendChild(divResultLogs2);
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// Parse table, accounting for rowspan
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let elTrs1 = document.querySelector('#result').rows;
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let rows = [];
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for (let elTr1 of elTrs1) {
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rows.push([]);
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}
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for (let r = 0; r < elTrs1.length; r++) {
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for (let c = 0; c < elTrs1[r].cells.length; c++) {
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let elTd1 = elTrs1[r].cells[c];
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rows[r].push(elTd1);
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let rowspan = elTd1.getAttribute('rowspan');
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// NB: Only works for rowspan in first column
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if (rowspan !== null && c == 0) {
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rowspan = parseInt(rowspan);
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// Add ghost cells
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for (let i = 1; i < rowspan; i++) {
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rows[r + i].push(null);
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}
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}
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}
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}
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function copyColumn(c, elTrs2) {
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let tdsAdded = [];
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for (let r = 0; r < rows.length; r++) {
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if (c < rows[r].length) {
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let elTd1 = rows[r][c];
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if (elTd1 !== null) {
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let elTd2 = wprint.document.createElement('td');
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elTd2.innerHTML = elTd1.innerHTML;
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elTd2.className = elTd1.className;
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elTd2.setAttribute('rowspan', elTd1.getAttribute('rowspan'));
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elTd2.setAttribute('style', elTd1.getAttribute('style'));
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elTrs2[r].appendChild(elTd2);
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tdsAdded.push(elTd2);
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}
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}
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}
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return tdsAdded;
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}
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async function copyTableColumns(startCol) {
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// Add table
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let elTable2 = wprint.document.createElement('table');
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elTable2.className = 'result';
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if (startCol > 1) {
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elTable2.style.pageBreakBefore = 'always';
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}
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elContainer.appendChild(elTable2);
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// Add rows
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let elTrs2 = [];
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for (let elTr1 of elTrs1) {
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let elTr2 = wprint.document.createElement('tr');
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elTr2.className = elTr1.className;
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elTrs2.push(elTr2);
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elTable2.appendChild(elTr2);
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}
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// Copy first column
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copyColumn(0, elTrs2);
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// How many columns to copy?
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let totalWidth = rows[0][0].clientWidth;
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let endCol;
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for (endCol = startCol; endCol < rows[0].length; endCol++) {
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if (totalWidth + rows[0][endCol].clientWidth > printableWidth) {
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break;
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}
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totalWidth += rows[0][endCol].clientWidth;
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}
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// Copy columns
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for (let c = startCol; c < endCol; c++) {
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copyColumn(c, elTrs2);
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}
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// Copy stage comments
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elContainer.insertAdjacentHTML('beforeend', '<p>Stage comments:</p>');
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let olStageComments2 = wprint.document.createElement('ol');
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olStageComments2.start = startCol;
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elContainer.append(olStageComments2);
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for (let c = startCol; c < endCol && c < rows[0].length - 1; c++) {
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olStageComments2.insertAdjacentHTML('beforeend', olStageComments.children[c-1].outerHTML);
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}
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if (endCol < rows[0].length) {
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// Start new table if columns remain
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copyTableColumns(endCol);
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} else {
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// Copy winning candidates
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elContainer.insertAdjacentHTML('beforeend', '<p>Count complete. The winning candidates are, in order of election:</p>');
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elContainer.insertAdjacentHTML('beforeend', divLogs2.lastElementChild.outerHTML);
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}
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}
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// Adjust results table to width
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document.getElementById('resultsDiv').style.width = printableWidth + 'px';
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await new Promise(window.requestAnimationFrame); // Allow DOM to update
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// Copy table
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await copyTableColumns(1);
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// Restore original view
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document.getElementById('resultsDiv').style.width = 'auto';
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// Trigger print when ready
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onLoadStylesheet();
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}
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// Presets
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function changePreset() {
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if (document.getElementById('selPreset').value === 'wigm') {
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document.getElementById('selQuotaCriterion').value = 'gt';
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document.getElementById('selQuota').value = 'droop_exact';
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document.getElementById('selQuotaMode').value = 'static';
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document.getElementById('chkBulkElection').checked = true;
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document.getElementById('chkBulkExclusion').checked = false;
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document.getElementById('chkDeferSurpluses').checked = false;
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document.getElementById('selNumbers').value = 'rational';
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document.getElementById('txtPPDP').value = '2';
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document.getElementById('chkNormaliseBallots').checked = false;
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document.getElementById('chkRoundQuota').checked = false;
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document.getElementById('chkRoundVotes').checked = false;
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document.getElementById('chkRoundTVs').checked = false;
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document.getElementById('chkRoundWeights').checked = false;
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document.getElementById('selSumTransfers').value = 'single_step';
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document.getElementById('selSurplus').value = 'by_size';
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document.getElementById('selTransfers').value = 'wig';
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document.getElementById('selPapers').value = 'both';
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document.getElementById('selExclusion').value = 'single_stage';
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document.getElementById('selTies').value = 'backwards,random';
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} else if (document.getElementById('selPreset').value === 'scottish') {
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document.getElementById('selQuotaCriterion').value = 'geq';
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document.getElementById('selQuota').value = 'droop';
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document.getElementById('selQuotaMode').value = 'static';
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document.getElementById('chkBulkElection').checked = true;
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document.getElementById('chkBulkExclusion').checked = false;
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document.getElementById('chkDeferSurpluses').checked = false;
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document.getElementById('selNumbers').value = 'fixed';
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document.getElementById('txtDP').value = '5';
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document.getElementById('txtPPDP').value = '5';
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document.getElementById('chkNormaliseBallots').checked = true;
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document.getElementById('chkRoundQuota').checked = true;
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document.getElementById('txtRoundQuota').value = '0';
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document.getElementById('chkRoundVotes').checked = false;
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document.getElementById('chkRoundTVs').checked = true;
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document.getElementById('txtRoundTVs').value = '5';
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document.getElementById('chkRoundWeights').checked = false;
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document.getElementById('selSumTransfers').value = 'per_ballot';
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document.getElementById('selSurplus').value = 'by_size';
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document.getElementById('selTransfers').value = 'wig';
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document.getElementById('selPapers').value = 'both';
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document.getElementById('selExclusion').value = 'single_stage';
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document.getElementById('selTies').value = 'backwards,random';
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} else if (document.getElementById('selPreset').value === 'senate') {
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document.getElementById('selQuotaCriterion').value = 'geq';
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document.getElementById('selQuota').value = 'droop';
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document.getElementById('selQuotaMode').value = 'static';
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document.getElementById('chkBulkElection').checked = true;
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document.getElementById('chkBulkExclusion').checked = true;
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document.getElementById('chkDeferSurpluses').checked = false;
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document.getElementById('selNumbers').value = 'fixed';
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document.getElementById('txtDP').value = '5';
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document.getElementById('txtPPDP').value = '0';
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document.getElementById('chkNormaliseBallots').checked = false;
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document.getElementById('chkRoundQuota').checked = true;
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document.getElementById('txtRoundQuota').value = '0';
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document.getElementById('chkRoundVotes').checked = true;
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document.getElementById('txtRoundVotes').value = '0';
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document.getElementById('chkRoundTVs').checked = false;
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document.getElementById('chkRoundWeights').checked = false;
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document.getElementById('selSumTransfers').value = 'single_step';
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document.getElementById('selSurplus').value = 'by_order';
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document.getElementById('selTransfers').value = 'uig';
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document.getElementById('selPapers').value = 'both';
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document.getElementById('selExclusion').value = 'by_value';
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document.getElementById('selTies').value = 'backwards,random';
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} else if (document.getElementById('selPreset').value === 'prsa77') {
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document.getElementById('selQuotaCriterion').value = 'geq';
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document.getElementById('selQuota').value = 'droop';
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document.getElementById('selQuotaMode').value = 'static';
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document.getElementById('chkBulkElection').checked = true;
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document.getElementById('chkBulkExclusion').checked = false;
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document.getElementById('chkDeferSurpluses').checked = true;
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document.getElementById('selNumbers').value = 'fixed';
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document.getElementById('txtDP').value = '5';
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document.getElementById('txtPPDP').value = '3';
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document.getElementById('chkNormaliseBallots').checked = false;
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document.getElementById('chkRoundQuota').checked = true;
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document.getElementById('txtRoundQuota').value = '3';
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document.getElementById('chkRoundVotes').checked = true;
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document.getElementById('txtRoundVotes').value = '3';
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document.getElementById('chkRoundTVs').checked = true;
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document.getElementById('txtRoundTVs').value = '3';
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document.getElementById('chkRoundWeights').checked = true;
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document.getElementById('txtRoundWeights').value = '3';
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document.getElementById('selSumTransfers').value = 'single_step';
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document.getElementById('selSurplus').value = 'by_order';
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document.getElementById('selTransfers').value = 'eg';
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document.getElementById('selPapers').value = 'transferable';
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document.getElementById('selExclusion').value = 'parcels_by_order';
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document.getElementById('selTies').value = 'backwards,random';
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} else if (document.getElementById('selPreset').value === 'ers97') {
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document.getElementById('selQuotaCriterion').value = 'geq';
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document.getElementById('selQuota').value = 'droop_exact';
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document.getElementById('selQuotaMode').value = 'ers97';
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document.getElementById('chkBulkElection').checked = true;
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document.getElementById('chkBulkExclusion').checked = true;
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document.getElementById('chkDeferSurpluses').checked = true;
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document.getElementById('selNumbers').value = 'fixed';
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document.getElementById('txtDP').value = '5';
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document.getElementById('txtPPDP').value = '2';
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document.getElementById('chkNormaliseBallots').checked = false;
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document.getElementById('chkRoundQuota').checked = true;
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document.getElementById('txtRoundQuota').value = '2';
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document.getElementById('chkRoundVotes').checked = true;
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document.getElementById('txtRoundVotes').value = '2';
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document.getElementById('chkRoundTVs').checked = true;
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document.getElementById('txtRoundTVs').value = '2';
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document.getElementById('chkRoundWeights').checked = true;
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document.getElementById('txtRoundWeights').value = '2';
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document.getElementById('selSumTransfers').value = 'single_step';
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document.getElementById('selSurplus').value = 'by_size';
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document.getElementById('selTransfers').value = 'eg';
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document.getElementById('selPapers').value = 'transferable';
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document.getElementById('selExclusion').value = 'by_value';
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document.getElementById('selTies').value = 'forwards,random';
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}
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}
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