/*!
 * jQuery Blockify Plugin
 * http://github.com/elidupuis
 *
 * Copyright 2010, Eli Dupuis
 * Version: 0.4 (Dec 11, 2010)
 * Dual licensed under the MIT (http://www.opensource.org/licenses/mit-license.php) and GPL (http://creativecommons.org/licenses/GPL/2.0/) licenses.
 * Requires: jQuery v1.4 or later
 */

(function($) {

  var ver = '0.4';

  $.fn.blockify = function(options) {

    // iterate and reformat each matched element
    return this.each(function() {
      var $this = $(this);
      var opts = $.extend({}, $.fn.blockify.defaults, options);

      var elm = $this.find(opts.selector);

      //  exit if there's no link found-based on
      if (elm.length < 1) {
        if(window.console.warn) window.console.warn('$.blockify', ver, ': No clild elements found. Ignoring', $this);
        return;
      };
    
      //  if user option true, use mouse pointer on hover: 
      if (opts.cursor) $(this).css( { cursor: opts.cursor } );
    
      //  add hover class to element for custom styling
      if ( opts.hoverClass ) {
        $this.hover( function() {
          $(this).addClass(opts.hoverClass);
        }, function() {
          $(this).removeClass(opts.hoverClass);
        });      
      };

      $this.bind( 'click', function( e ) {
        //  take into account elements in the ignore list:
        if ( $(e.target).not(opts.ignore).length > 0 ) {

          //  make sure no text has been selected:
          if($.fn.blockify.getSelectedText() == "") {

            if ( elm.hasClass( opts.externalClass ) ) {
              window.open( elm.attr('href') );
            }else{
              window.location = elm.attr('href');
            };
          };
        };
      });
    
    });
  };  

  //  defaults
  $.fn.blockify.defaults = {
    selector: 'a:last',      //  selector to specific anchor to be used when parent is clicked.
    cursor: 'pointer',      //  sets css cursor value. set to false to do nothing.
    hoverClass: 'hover',    //  class attached to element on hover for styling purposes.
    externalClass: 'ext',    //  if target anchor has this class, link will be opened in a new window.
    ignore: 'a, input, textarea, label, button'   //  clicking on these elements will not trigger the selected link.
  };

  $.fn.blockify.getSelectedText = function(){
  //  borrowed from http://newism.com.au/blog/post/58/bigtarget-js-increasing-the-size-of-clickable-targets/
  //  prehaps look into a better way to do this...but maybe not :)
    if( window.getSelection ){
      return window.getSelection().toString();
    }else if( document.getSelection ){
      return document.getSelection();
    }else if( document.selection ){
      return document.selection.createRange().text;
    }else{
      return false;
    };
  };

  $.fn.blockify.ver = function() { return "jquery.blockify ver. " + ver; };

})(jQuery);