MrCrankyPants for Propane - block users and image uploads.

gistfile1.js

/* MrCrankyPants - block users and images from Propane!
* to use, place it in ~/Library/Application Support/Propane/unsupported/caveatPatchor.js (yes, it must be that file name) 
* 
* Created by ripping code off of https://gist.github.com/825404 and https://gist.github.com/310162
*/

Campfire.MrCrankyPants = Class.create({
  options: {
    blockedUsers: ['Abe L.', 'George W.'],
    usersAllowedToPostImages: ['Theodore R.'],
    replacements: ['quack!', 'moo!', 'bark!']
  },

  initialize: function(chat) {
    this.chat = chat;
    var messages = this.chat.transcript.messages;

    for (var i = 0; i < messages.length; i++) {
      this.scrubMessage(messages[i]);
    }
  },

  scrubMessage: function(message) {
    this.unloadImages(message);
    this.blockUsers(message);
  },

  blockUsers: function(message) {
    if(!this.options.blockedUsers.include(message.author())) return;

    message.bodyElement().innerHTML = '[USER BLOCKED] '+ this.randomMessage();
  },

  randomMessage: function(message) {
    var min = 0;
    var max = this.options.replacements.length;
    var index = Math.floor(Math.random() * max);
    return this.options.replacements[index];
  },

  unloadImages: function(message){
    if(this.options.usersAllowedToPostImages.include(message.author())) return;

    var images = message.bodyElement().select('img');
    images.each( function (img) {
      if(!img.hasClassName('file_icon')) {
        img.replace('[IMAGE BLOCKED] ' + img.src);
      }
    });

    var links = message.bodyElement().select('a');
    links.each( function (a) {
      a.classNames().each ( function(name) {a.removeClassName(name)});
    });
  },

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

});

Campfire.Responders.push("MrCrankyPants");
window.chat.installPropaneResponder("MrCrankyPants", "mrcrankypants");