// This hides all Unfogged comments from read, inserting a button in their place to redisplay the comment.
// It also inserts one at the top of the page to show all hidden comments.
// ==UserScript==
// @name           Put a sock in it, read.
// @namespace      http://pasiir.unfogged.com/
// @include        http://www.unfogged.com/archives/comments_*
// ==/UserScript==

var allComments;
var readcoms = 0;
allComments = document.evaluate("//span[@class='comments-post']", document, null,
                                XPathResult.UNORDERED_NODE_SNAPSHOT_TYPE, null);
for (var i = 0; i < allComments.snapshotLength; i++) {
    thisSpan = allComments.snapshotItem(i);
//    if (thisSpan.innerText.substring(15,0) == 'Posted by: read') {
    if (thisSpan.childNodes[0].nodeValue.match(/read/)) {
        readcoms += 1;
        postDiv = thisSpan.parentNode;
    button = document.createElement('a');
    button.style.color = 'blue';
    button.style.display = 'block';
    button.className = 'read-comment-button';
    button.appendChild(document.createTextNode("Removed comment by read. Click to show."));
    postDiv.parentNode.insertBefore(button, postDiv);
    button.addEventListener('click', function() {this.nextSibling.style.display = 'block'; this.style.display = 'none';}, false);
    postDiv.style.display = 'none';
    }
}
if (readcoms) {
    button = document.createElement('a');
    button.style.color = 'blue';
    button.style.display = 'block';
    button.className = 'read-comment-button';
    button.appendChild(document.createTextNode("This post contains comments by read. Click to show all."));
    document.body.insertBefore(button, document.body.childNodes[0]);
    button.addEventListener('click', function() {
      buts = document.evaluate("//a[@class='read-comment-button']",
                    document, null,
                    XPathResult.UNORDERED_NODE_SNAPSHOT_TYPE,
                    null);
      for (var i = 0; i < buts.snapshotLength; i++) {
        thisBut = buts.snapshotItem(i);
        com = thisBut.nextSibling;
        while (com.nodeType == 3) com = com.nextSibling;
        com.style.display = 'block';
        thisBut.style.display = 'none';
      }
    }, false);
}