caveatPatchor.js

var displayPlaceKittenImages = true;

if (displayPlaceKittenImages) {
  Campfire.PlaceKittenExpander = Class.create({
    initialize: function(chat) {
      this.chat = chat;
      var messages = this.chat.transcript.messages;
      for (var i = 0; i < messages.length; i++) {
        this.detectPlaceKittenURL(messages[i]);
      }
    },

    detectPlaceKittenURL: function(message) {
      if (!message.pending() && message.kind === 'text') {
        var links = message.bodyElement().select('a:not(image)');
        if (links.length != 1) {
          return;
        }
        var href = links[0].getAttribute('href');
        var match = href.match(/^http:\/\/placekitten.com\/g\/[0-9]+\/[0-9]+$/);
        if (!match) return;
        message.resize((function() {
          message.bodyCell.innerHTML = '<a href="'+href+'" class="image loading" target="_blank">' + '<img src="'+href+'" onload="$dispatch(&quot;inlineImageLoaded&quot;, this)" onerror="$dispatch(&quot
;inlineImageLoadFailed&quot;, this)" /></a>';
        }).bind(this));
      }
    },

    onMessagesInsertedBeforeDisplay: function(messages) {
      for (var i = 0; i < messages.length; i++) {
        this.detectPlaceKittenURL(messages[i]);
      }
    },

    onMessageAccepted: function(message, messageID) {
      this.detectPlaceKittenURL(message);
    }
  });

  Campfire.Responders.push("PlaceKittenExpander");
  window.chat.installPropaneResponder("PlaceKittenExpander", "placekittenexpander");
}