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"use strict";
const events = require("../events.js");
const views = require("../util/views.js");
const CommentControl = require("../controls/comment_control.js");
const template = views.getTemplate("comment-list");
class CommentListControl extends events.EventTarget {
constructor(hostNode, comments, reversed) {
super();
this._hostNode = hostNode;
this._comments = comments;
this._commentIdToNode = {};
comments.addEventListener("add", (e) => this._evtAdd(e));
comments.addEventListener("remove", (e) => this._evtRemove(e));
views.replaceContent(this._hostNode, template());
const commentList = Array.from(comments);
if (reversed) {
commentList.reverse();
}
for (let comment of commentList) {
this._installCommentNode(comment);
}
}
get _commentListNode() {
return this._hostNode.querySelector("ul");
}
_installCommentNode(comment) {
const commentListItemNode = document.createElement("li");
const commentControl = new CommentControl(
commentListItemNode,
comment,
false
);
events.proxyEvent(commentControl, this, "submit");
events.proxyEvent(commentControl, this, "score");
events.proxyEvent(commentControl, this, "delete");
this._commentIdToNode[comment.id] = commentListItemNode;
this._commentListNode.appendChild(commentListItemNode);
}
_uninstallCommentNode(comment) {
const commentListItemNode = this._commentIdToNode[comment.id];
commentListItemNode.parentNode.removeChild(commentListItemNode);
}
_evtAdd(e) {
this._installCommentNode(e.detail.comment);
}
_evtRemove(e) {
this._uninstallCommentNode(e.detail.comment);
}
}
module.exports = CommentListControl;
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