125 lines
3.4 KiB
JavaScript
125 lines
3.4 KiB
JavaScript
/* eslint-disable class-methods-use-this */
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require('./lib/utils/url_utility');
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const UNFOLD_COUNT = 20;
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let isBound = false;
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class Diff {
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constructor() {
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const $diffFile = $('.files .diff-file');
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$diffFile.singleFileDiff();
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$diffFile.filesCommentButton();
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$diffFile.each((index, file) => new gl.ImageFile(file));
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if (this.diffViewType() === 'parallel') {
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$('.content-wrapper .container-fluid').removeClass('container-limited');
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}
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if (!isBound) {
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$(document)
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.on('click', '.js-unfold', this.handleClickUnfold.bind(this))
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.on('click', '.diff-line-num a', this.handleClickLineNum.bind(this));
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isBound = true;
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}
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if (gl.utils.getLocationHash()) {
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this.highlightSelectedLine();
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}
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this.openAnchoredDiff();
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}
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handleClickUnfold(e) {
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const $target = $(e.target);
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const [oldLineNumber, newLineNumber] = this.lineNumbers($target.parent());
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const offset = newLineNumber - oldLineNumber;
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const bottom = $target.hasClass('js-unfold-bottom');
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let since;
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let to;
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let unfold = true;
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if (bottom) {
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const lineNumber = newLineNumber + 1;
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since = lineNumber;
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to = lineNumber + UNFOLD_COUNT;
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} else {
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const lineNumber = newLineNumber - 1;
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since = lineNumber - UNFOLD_COUNT;
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to = lineNumber;
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// make sure we aren't loading more than we need
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const prevNewLine = this.lineNumbers($target.parent().prev())[1];
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if (since <= prevNewLine + 1) {
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since = prevNewLine + 1;
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unfold = false;
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}
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}
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const file = $target.parents('.diff-file');
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const link = file.data('blob-diff-path');
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const view = file.data('view');
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const params = { since, to, bottom, offset, unfold, view };
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$.get(link, params, response => $target.parent().replaceWith(response));
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}
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openAnchoredDiff(cb) {
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const locationHash = gl.utils.getLocationHash();
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const anchoredDiff = locationHash && locationHash.split('_')[0];
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if (!anchoredDiff) return;
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const diffTitle = $(`#${anchoredDiff}`);
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const diffFile = diffTitle.closest('.diff-file');
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const nothingHereBlock = $('.nothing-here-block:visible', diffFile);
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if (nothingHereBlock.length) {
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const clickTarget = $('.js-file-title, .click-to-expand', diffFile);
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diffFile.data('singleFileDiff').toggleDiff(clickTarget, () => {
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this.highlightSelectedLine();
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if (cb) cb();
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});
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} else if (cb) {
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cb();
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}
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}
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handleClickLineNum(e) {
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const hash = $(e.currentTarget).attr('href');
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e.preventDefault();
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if (window.history.pushState) {
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window.history.pushState(null, null, hash);
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} else {
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window.location.hash = hash;
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}
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this.highlightSelectedLine();
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}
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diffViewType() {
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return $('.inline-parallel-buttons a.active').data('view-type');
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}
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lineNumbers(line) {
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const children = line.find('.diff-line-num').toArray();
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if (children.length !== 2) {
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return [0, 0];
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}
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return children.map(elm => parseInt($(elm).data('linenumber'), 10) || 0);
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}
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highlightSelectedLine() {
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const hash = gl.utils.getLocationHash();
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const $diffFiles = $('.diff-file');
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$diffFiles.find('.hll').removeClass('hll');
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if (hash) {
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$diffFiles
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.find(`tr#${hash}:not(.match) td, td#${hash}, td[data-line-code="${hash}"]`)
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.addClass('hll');
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}
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}
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}
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window.gl = window.gl || {};
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window.gl.Diff = Diff;
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