Userscripts.org

There are 1 previous version of this script.

// ==UserScript==
// @name           Collapsible Amazon
// @author         Ben Hollis
// @namespace      http://brh.numbera.com/software/greasemonkeyscripts
// @description    Collapse any section of the Amazon website by clicking on the orange section header.
// @include        http://*.amazon.*
// @version        3.1
// ==/UserScript==

String.prototype.trim = function() { return this.replace(/^\s+|\s+$/g, ""); };

function findContent(bucket, header) {
  if(header == null)
    return null;

  var current = header;
  var contents = [];

  while(current != bucket) {
    while(current.nextSibling) {
      current = current.nextSibling;

      if(current.style)
        contents.push(current);
    }

    current = current.parentNode;

    if(current.className == "amabot_endcap")
     return null;
  }

  return contents;
}

function findHeader(bucket) {
  var header = document.evaluate('.//b[contains(@class, "h1")] | .//h2 | '
                               + './/strong[contains(@class, "h1")] | '
                               + './/h1[contains(@class, "h1")]', bucket, null, XPathResult.UNORDERED_NODE_SNAPSHOT_TYPE, null);

  if(header.snapshotLength > 0) {
    return header.snapshotItem(0);
  }
  else {
    return null;
  }
}

function headerClickHandler(header, contents, key) {
  return function () {
    var opened = GM_getValue(key, true);

    if(opened == true) {
      opened = false;
      closeSection(contents);
      header.className = header.className.replace("brhgmopened", "brhgmclosed");
    }
    else {
      opened = true;
      openSection(contents);
      header.className = header.className.replace("brhgmclosed", "brhgmopened");
    }

    GM_setValue(key, opened);
  };
}

function setupHandlers() {
  GM_addStyle(".brhgmopened { cursor:pointer; }\n" +
              ".brhgmclosed { cursor:pointer; }\n" +
              ".brhgmopened:before { content:\"-\"; color: black; font-weight: bold; border: 1px solid black; padding:0 3px; font-size:10px; margin-right: 4px;}\n" +
              ".brhgmclosed:before { content:\"+\"; color: black; font-weight: bold; border: 1px solid black; padding:0 3px; font-size:10px; margin-right: 4px;}");

  var allBuckets = document.evaluate('//div[contains(@class, "bucket")] | //td[contains(@class, "bucket")] '
                                 + '| //div[contains(@class, "acc")] | //div[contains(@class, "graybox")] '
                                 + '| //div[contains(@class, "cmPage")] | //div[contains(@class, "cBoxInner")] '
                                 + '| id("hmdFormDiv")', document, null, XPathResult.UNORDERED_NODE_SNAPSHOT_TYPE, null);

  for(var i = 0; i < allBuckets.snapshotLength; i++) {
    var bucket = allBuckets.snapshotItem(i);

    var header = findHeader(bucket);
    if (!header) {
      continue;
    }

    var contents = findContent(bucket, header);
    if (!contents) {
      continue;
    }

    var key = header.innerHTML.trim();
    key.replace(/".*?"/,''); // Get rid of search term in 'Looking for "<search>" Products?'

    var opened = GM_getValue(key, true);

    if(!opened) {
      closeSection(contents);
    }

    // Already set up
    if (header.className.indexOf("brhgm") >= 0) {
      continue;
    }

    header.addEventListener("click", headerClickHandler(header, contents, key), false);
    header.className += (opened) ? " brhgmopened" : " brhgmclosed";
  }
}

function closeSection(contents) {
  for each(var content in contents) {
      content.style.display = "none";
  }
}

function openSection(contents) {
  for each(var content in contents) {
      content.style.display = "";
  }
}

// tags and customer discussions are lazy-loaded - wait until they show up
// Takes an element to look for, and a "tell-tale" class name to check and see if the content is loaded
function pollForLazyLoadedContent(elementId, telltale) {
  var interval = setInterval(function() {
    var content = document.getElementById(elementId);

    if (content && content.getElementsByClassName(telltale).length > 0) {
      setupHandlers();
      clearInterval(interval);
    }
  }, 1000);
}

// This script seems to load when ad content loads too - short circuit so we don't waste time
if (document.getElementById("navbar")) {
  setupHandlers();

  pollForLazyLoadedContent("CustomerDiscussions", "dataGrid");
  pollForLazyLoadedContent("tagContentHolder", "tag-cols");
  pollForLazyLoadedContent("rhf_container", "shoveler");
}