BookStack/resources/assets/js/components/page-comments.js

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JavaScript
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import MarkdownIt from "markdown-it";
const md = new MarkdownIt({ html: false });
class PageComments {
constructor(elem) {
this.elem = elem;
this.pageId = Number(elem.getAttribute('page-id'));
this.editingComment = null;
this.parentId = null;
this.container = elem.querySelector('[comment-container]');
this.formContainer = elem.querySelector('[comment-form-container]');
if (this.formContainer) {
this.form = this.formContainer.querySelector('form');
this.formInput = this.form.querySelector('textarea');
this.form.addEventListener('submit', this.saveComment.bind(this));
}
this.elem.addEventListener('click', this.handleAction.bind(this));
this.elem.addEventListener('submit', this.updateComment.bind(this));
}
handleAction(event) {
let actionElem = event.target.closest('[action]');
if (event.target.matches('a[href^="#"]')) {
let id = event.target.href.split('#')[1];
window.scrollAndHighlight(document.querySelector('#' + id));
}
if (actionElem === null) return;
event.preventDefault();
let action = actionElem.getAttribute('action');
if (action === 'edit') this.editComment(actionElem.closest('[comment]'));
if (action === 'closeUpdateForm') this.closeUpdateForm();
if (action === 'delete') this.deleteComment(actionElem.closest('[comment]'));
if (action === 'addComment') this.showForm();
if (action === 'hideForm') this.hideForm();
if (action === 'reply') this.setReply(actionElem.closest('[comment]'));
if (action === 'remove-reply-to') this.removeReplyTo();
}
closeUpdateForm() {
if (!this.editingComment) return;
this.editingComment.querySelector('[comment-content]').style.display = 'block';
this.editingComment.querySelector('[comment-edit-container]').style.display = 'none';
}
editComment(commentElem) {
this.hideForm();
if (this.editingComment) this.closeUpdateForm();
commentElem.querySelector('[comment-content]').style.display = 'none';
commentElem.querySelector('[comment-edit-container]').style.display = 'block';
let textArea = commentElem.querySelector('[comment-edit-container] textarea');
let lineCount = textArea.value.split('\n').length;
textArea.style.height = ((lineCount * 20) + 40) + 'px';
this.editingComment = commentElem;
}
updateComment(event) {
let form = event.target;
event.preventDefault();
let text = form.querySelector('textarea').value;
let reqData = {
text: text,
html: md.render(text),
parent_id: this.parentId || null,
};
this.showLoading(form);
let commentId = this.editingComment.getAttribute('comment');
window.$http.put(window.baseUrl(`/ajax/comment/${commentId}`), reqData).then(resp => {
let newComment = document.createElement('div');
newComment.innerHTML = resp.data;
this.editingComment.innerHTML = newComment.children[0].innerHTML;
window.$events.emit('success', window.trans('entities.comment_updated_success'));
window.components.init(this.editingComment);
this.closeUpdateForm();
this.editingComment = null;
this.hideLoading(form);
});
}
deleteComment(commentElem) {
let id = commentElem.getAttribute('comment');
this.showLoading(commentElem.querySelector('[comment-content]'));
window.$http.delete(window.baseUrl(`/ajax/comment/${id}`)).then(resp => {
commentElem.parentNode.removeChild(commentElem);
window.$events.emit('success', window.trans('entities.comment_deleted_success'));
this.updateCount();
this.hideForm();
});
}
saveComment(event) {
event.preventDefault();
event.stopPropagation();
let text = this.formInput.value;
let reqData = {
text: text,
html: md.render(text),
parent_id: this.parentId || null,
};
this.showLoading(this.form);
window.$http.post(window.baseUrl(`/ajax/page/${this.pageId}/comment`), reqData).then(resp => {
let newComment = document.createElement('div');
newComment.innerHTML = resp.data;
let newElem = newComment.children[0];
this.container.appendChild(newElem);
window.components.init(newElem);
window.$events.emit('success', window.trans('entities.comment_created_success'));
this.resetForm();
this.updateCount();
});
}
updateCount() {
let count = this.container.children.length;
this.elem.querySelector('[comments-title]').textContent = window.trans_choice('entities.comment_count', count, {count});
}
resetForm() {
this.formInput.value = '';
this.formContainer.appendChild(this.form);
this.hideForm();
this.removeReplyTo();
this.hideLoading(this.form);
}
showForm() {
this.formContainer.style.display = 'block';
this.formContainer.parentNode.style.display = 'block';
this.elem.querySelector('[comment-add-button-container]').style.display = 'none';
this.formInput.focus();
window.scrollToElement(this.formInput);
}
hideForm() {
this.formContainer.style.display = 'none';
this.formContainer.parentNode.style.display = 'none';
const addButtonContainer = this.elem.querySelector('[comment-add-button-container]');
if (this.getCommentCount() > 0) {
this.elem.appendChild(addButtonContainer)
} else {
const countBar = this.elem.querySelector('[comment-count-bar]');
countBar.appendChild(addButtonContainer);
}
addButtonContainer.style.display = 'block';
}
getCommentCount() {
return this.elem.querySelectorAll('.comment-box[comment]').length;
}
setReply(commentElem) {
this.showForm();
this.parentId = Number(commentElem.getAttribute('local-id'));
this.elem.querySelector('[comment-form-reply-to]').style.display = 'block';
let replyLink = this.elem.querySelector('[comment-form-reply-to] a');
replyLink.textContent = `#${this.parentId}`;
replyLink.href = `#comment${this.parentId}`;
}
removeReplyTo() {
this.parentId = null;
this.elem.querySelector('[comment-form-reply-to]').style.display = 'none';
}
showLoading(formElem) {
let groups = formElem.querySelectorAll('.form-group');
for (let i = 0, len = groups.length; i < len; i++) {
groups[i].style.display = 'none';
}
formElem.querySelector('.form-group.loading').style.display = 'block';
}
hideLoading(formElem) {
let groups = formElem.querySelectorAll('.form-group');
for (let i = 0, len = groups.length; i < len; i++) {
groups[i].style.display = 'block';
}
formElem.querySelector('.form-group.loading').style.display = 'none';
}
}
export default PageComments;