better reply experience for v2ex
// ==UserScript==
// @name v2exBetterReply
// @author dbw9580
// @namespace v2ex.com
// @description better reply experience for v2ex
// @include /^https?:\/\/(\w+\.)?v2ex\.com\/t\//
// @version 2016-08-27
// @grant GM_log
// @grant GM_addStyle
// @run-at document-end
// @require https://code.jquery.com/jquery-2.2.4.min.js
// ==/UserScript==
GM_addStyle(".v2exBR-reply-no-target{background-color: #AAAAAA; color: black !important; cursor: pointer; font-weight:bold;}");
GM_addStyle(".v2exBR-cited-comment-view{background-color: white; position: absolute; display: none; max-width: 500px;}");
GM_addStyle(".v2exBR-reply-citation{color: #778087; cursor: pointer;} .v2exBR-reply-citation:hover{color: #4d5256; text-decoration: underline;}");
GM_addStyle(".v2exBR-cited-comment-view .fr{display: none;}");
$(document.body).append($("<div class=\"v2exBR-cited-comment-view cell\" id=\"v2exBR_citation_div\"></div>"));
$(".no").hover(function(){
$(this).addClass("v2exBR-reply-no-target");
}, function(){
$(this).removeClass("v2exBR-reply-no-target");
}).click(function(){
var username = $(this).parent().next().next().children("a").text();
var commentNo = $(this).text();
makeCitedReply(username, commentNo);
});
var numCurrentPage = Math.ceil(parseInt($(".no").eq(0).text()) / 100);
var citedPages = {};
var commentCells = $("div.cell").filter(function(){
return this.id.startsWith("r");
});
var citedPagesNos = [];
var threadUrl = window.location.href.match(/^.+\/t\/\d+/)[0];
commentCells.find("div.reply_content")
.each(function(index){
var content = $(this).html();
var replacementSpan = "<span class=\"v2exBR-reply-citation\" v2exBR-commentCellId=\"null\" v2exBR-citedPage=\"0\">";
content = content.replace(/>>\d+(?=\s|<br)/g, replacementSpan + "$&" + "</span>");
$(this).html(content);
$("span.v2exBR-reply-citation", this).each(function(){
var replyNo = parseInt($(this).text().match(/>>(\d+)/)[1]);
var numCitedPage = Math.ceil(replyNo / 100);
if(citedPagesNos.indexOf(numCitedPage) < 0){
citedPagesNos.push(numCitedPage);
}
});
});
for(var i = 0; i < citedPagesNos.length; i++){
var thisPageNo = citedPagesNos[i];
if(thisPageNo == numCurrentPage) continue;
(function(thisPageNo){
$.get(threadUrl + "?p=" + thisPageNo, function(data, status){
var resultPageRoot = $(data);
if(resultPageRoot.find("a.page_current").attr("href").match("\\?p=" + thisPageNo) === null){
return;
}
citedPages[thisPageNo] = resultPageRoot;
bindCitationElements(thisPageNo);
});
})(thisPageNo);
}
bindCitationElements(numCurrentPage);
$(".v2exBR-reply-citation").hover(function(){
var self = this;
var commentCellId = $(self).attr("v2exBR-commentCellId");
var numCitedPage = parseInt($(self).attr("v2exBR-citedPage"));
if(commentCellId === "null") return;
if(citedPages[numCitedPage] === undefined){
var citedPageRoot = window.document;
}
else{
var citedPageRoot = citedPages[numCitedPage];
}
var citationHTML = $("#"+commentCellId, citedPageRoot).html();
var divPosTopOffset = window.getComputedStyle(self).getPropertyValue("font-size").match(/(\d+)px/)[1];
$("#v2exBR_citation_div").html(citationHTML)
.css({
top:$(self).offset().top,
left:$(self).offset().left + $(self).width()
})
.fadeIn(100);
}, function(){
$("#v2exBR_citation_div").fadeOut(100);
});
$(".v2exBR-reply-citation").click(function(){
var commentCellId = $(this).attr("v2exBR-commentCellId");
var numCitedPage = parseInt($(this).attr("v2exBR-citedPage"));
if(commentCellId == "null") return;
if(numCitedPage == numCurrentPage){
$("html, body").animate({
scrollTop: $("#" + commentCellId).offset().top
}, 500);
}
else{
window.location.href = threadUrl + "?p=" + numCitedPage + "&v2exBR_commentCellId=" + commentCellId;
}
});
(function(){
var commentCellId = window.location.href.match(/v2exBR_commentCellId=(r_\d+)/);
if(commentCellId != null){
commentCellId = commentCellId[1];
$("html, body").animate({
scrollTop: $("#" + commentCellId).offset().top
}, 500);
}
})();
function bindCitationElements(numPageLoaded){
$("span.v2exBR-reply-citation").each(function(){
var self = this;
var replyNo = parseInt($(this).text().match(/>>(\d+)/)[1]);
var citedCommentCellId = "";
var numCitedPage = Math.ceil(replyNo / 100);
var isMultiPage = ($("a.page_current").length > 0);
if(numCitedPage != numPageLoaded) return true;
if(numCitedPage != numCurrentPage){
if(!isMultiPage){ //cited a non-existent comment ID
return true;
}
if(citedPages[numCitedPage] != undefined){
citedCommentCellId = getCommentCellIdFromReplyNo(citedPages[numCitedPage], replyNo);
registerCitation(self, citedCommentCellId, numCitedPage);
}
}
else if((replyNo - 1) % 100 <= commentCells.length){ //cited comment is on the same page, retrieve info directly from this page
citedCommentCellId = commentCells.get((replyNo - 1) % 100).id;
registerCitation(self, citedCommentCellId, numCitedPage);
}
});
}
function getCommentCellIdFromReplyNo(documentRoot, replyNo){
return documentRoot.find(".no").filter(function(){
return parseInt($(this).text()) == replyNo;
}).parents("div.cell").get(0).id;
}
function registerCitation(elem, id, numPage){
$(elem).attr("v2exBR-commentCellId", id);
$(elem).attr("v2exBR-citedPage", numPage);
}
function makeCitedReply(username, commentNo){
replyContent = $("#reply_content");
oldContent = replyContent.val();
userTag = "@" + username + " ";
commentTag = ">>" + commentNo + " \n";
newContent = commentTag + userTag;
if(oldContent.length > 0){
if (oldContent != commentTag + userTag) {
newContent = oldContent + "\n" + commentTag + userTag;
}
} else {
newContent = commentTag + userTag;
}
replyContent.focus();
replyContent.val(newContent);
moveEnd($("#reply_content"));
}