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/* eslint-disable consistent-return */
import $ from 'jquery';
import { __ } from './locale';
import axios from './lib/utils/axios_utils';
import { deprecatedCreateFlash as createFlash } from './flash';
import FilesCommentButton from './files_comment_button';
import initImageDiffHelper from './image_diff/helpers/init_image_diff';
import syntaxHighlight from './syntax_highlight';
const WRAPPER = '<div class="diff-content"></div>';
const LOADING_HTML = '<span class="spinner"></span>';
const ERROR_HTML =
'<div class="nothing-here-block"><i class="fa fa-warning"></i> Could not load diff</div>';
const COLLAPSED_HTML =
'<div class="nothing-here-block diff-collapsed">This diff is collapsed. <button class="click-to-expand btn btn-link">Click to expand it.</button></div>';
export default class SingleFileDiff {
constructor(file) {
this.file = file;
this.toggleDiff = this.toggleDiff.bind(this);
this.content = $('.diff-content', this.file);
this.$toggleIcon = $('.diff-toggle-caret', this.file);
this.diffForPath = this.content.find('[data-diff-for-path]').data('diffForPath');
this.isOpen = !this.diffForPath;
if (this.diffForPath) {
this.collapsedContent = this.content;
this.loadingContent = $(WRAPPER)
.addClass('loading')
.html(LOADING_HTML)
.hide();
this.content = null;
this.collapsedContent.after(this.loadingContent);
this.$toggleIcon.addClass('fa-caret-right');
} else {
this.collapsedContent = $(WRAPPER)
.html(COLLAPSED_HTML)
.hide();
this.content.after(this.collapsedContent);
this.$toggleIcon.addClass('fa-caret-down');
}
$('.js-file-title, .click-to-expand', this.file).on('click', e => {
this.toggleDiff($(e.target));
});
}
toggleDiff($target, cb) {
if (
!$target.hasClass('js-file-title') &&
!$target.hasClass('click-to-expand') &&
!$target.hasClass('diff-toggle-caret')
)
return;
this.isOpen = !this.isOpen;
if (!this.isOpen && !this.hasError) {
this.content.hide();
this.$toggleIcon.addClass('fa-caret-right').removeClass('fa-caret-down');
this.collapsedContent.show();
} else if (this.content) {
this.collapsedContent.hide();
this.content.show();
this.$toggleIcon.addClass('fa-caret-down').removeClass('fa-caret-right');
} else {
this.$toggleIcon.addClass('fa-caret-down').removeClass('fa-caret-right');
return this.getContentHTML(cb);
}
}
getContentHTML(cb) {
this.collapsedContent.hide();
this.loadingContent.show();
axios
.get(this.diffForPath)
.then(({ data }) => {
this.loadingContent.hide();
if (data.html) {
this.content = $(data.html);
syntaxHighlight(this.content);
} else {
this.hasError = true;
this.content = $(ERROR_HTML);
}
this.collapsedContent.after(this.content);
const $file = $(this.file);
FilesCommentButton.init($file);
const canCreateNote = $file.closest('.files').is('[data-can-create-note]');
initImageDiffHelper.initImageDiff($file[0], canCreateNote);
if (cb) cb();
})
.catch(() => {
createFlash(__('An error occurred while retrieving diff'));
});
}
}
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