48 lines
1.6 KiB
JavaScript
48 lines
1.6 KiB
JavaScript
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const ProgressBar = function() {
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this.state = {
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x: 0,
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adder: 1,
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bars: [],
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};
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this.setState = function (key, value) {
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this.state[key] = value;
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};
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this.barHolder = document.getElementById('bar-holder');
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this.createProgressBar = function (size) {
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this.setState('size', size);
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for (var i = 0; i < size; i++) {
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const bar = document.createElement('span');
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bar.innerText = '| ';
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bar.setAttribute('class', 'progress-bar progress-bar--inactive');
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this.barHolder.appendChild(bar);
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this.state.bars.push(bar);
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}
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};
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this.startProgressBar = function () {
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this.updateInterval = setInterval(this.updateProgressBar.bind(this), 300);
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};
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this.updateProgressBar = function () {
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const x = this.state.x;
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const adder = this.state.adder;
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const size = this.state.size;
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// update the appropriate bar
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if (x > -1 && x < size){
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if (adder === 1){
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this.state.bars[x].setAttribute('class', 'progress-bar progress-bar--active');
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} else {
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this.state.bars[x].setAttribute('class', 'progress-bar progress-bar--inactive');
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}
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}
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// update adder
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if (x === size){
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this.setState('adder', -1);
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} else if ( x === -1){
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this.setState('adder', 1);
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}
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// update x
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this.setState('x', x + adder);
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};
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this.stopProgressBar = function () {
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clearInterval(this.updateInterval);
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};
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};
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