plugin.jquery.js

/*
jQuery.plugin("resizable", {
  options: { clickable: false },
  setup: function(){
    if ( this.options.clickable )
      // Automatically Namespaced
      this.bind("click", function(){});
    
    this.addClass("test");
  },
  // Hidden:
  // .unbind(".name")
  // .removeData(".name")
  // return false blocks it
  teardown: function(){
    // Automatically Namespaced
    if ( this.options.clickable )
      this.unbind("click");
    
    this.removeClass("test");
  },
  methods: {
    blahResize: function(width){
      this.css("width", width);
    }
  }
});

jQuery.plugin("another", function(name, address){
  this.options.name = name;
  this.options.address = address;

  if ( this.options.name )
    // Automatically Namespaced
    this.bind("click", function(){});
  
  this.addClass("test");
});

jQuery("div")
  .resiable({ clickable: true })
  .another(true, 50);
*/

jQuery.plugin = function(name, fn, props){
  if ( typeof fn === "function" ) {
    props = props || {};
    
    jQuery.fn[ props.name || name ] = function(){
      var ret, args = arguments;
      
      this.each(function(){
        var instance = jQuery.data( this, name );
        
        if ( !instance ) {
          instance = jQuery(this);
          instance.options = props.options ?
            jQuery.extend({}, props.options, args[0]) : {};
            
          for( prop in jQuery.fn[ props.name || name ] ) {
            jQuery.fn[ props.name || name ] ).apply( this, instance )
          }
            
          jQuery.data( this, name, instance );

          jQuery(this).bind("remove." + name, function(){
            if ( props.teardown ) {
              props.teardown.call( jQuery.data( this, name ) );
            }
            
            jQuery(this)
              .removeData(name)
              .removeData("." + name)
              .unbind("." + name);
          }).bind("setData." + name, function(e, key, value){
            jQuery.data( this, name ).options[key] = value;
          }).bind("getData." + name, function(e, key){
            return jQuery.data( this, name ).options[key];
          });
        }
          
        ret = fn.apply( instance, args );
      });
      
      return typeof ret === "undefined" ? this : ret;
    };
  } else {
    jQuery.plugin(name, fn.setup, fn);
    
    if ( fn.methods ) {
      for ( var method in fn.methods ) {
        fn.name = method;
        jQuery.plugin(name, fn.methods[method], fn);
      }
    }
  }
};

jQuery.plugin.addOption = function( pluginName, option, fn ) {
  jQuery.fn[pluginName][option] = fn;
}

jQuery.fn.option = function(plugin, name, value){
  return this.data(name + "." + plugin, value);
};