/**
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

/**
 * (C) 2008 Syronex / J.M. Rosengard
 * http://www.syronex.com/software/jquery-color-picker
 *
 * - Check mark is either black or white, depending on the darkness 
 *   of the color selected.
 * - Fixed a bug in the original plugin that led to problems when there is 
 *   more than one colorPicker in a document.
 *
 * This is based on: 
 *
 * jQuery colorSelect plugin 0.9
 * http://plugins.jquery.com/project/colorPickerAgain
 * Copyright (c) 2008 Otaku RzO (Renzo Galo Castro Jurado).
 * (Original author URL & domain name no longer available.)
 *
 color:new Array(
	"#FFFFFF", "#EEEEEE", "#FFFF88", "#FF7400", "#CDEB8B", "#6BBA70",
	"#006E2E", "#C3D9FF", "#4096EE", "#356AA0", "#FF0096", "#B02B2C", 
	"#000000"
	)
 
 */

(function($) {
  $.fn.colorPicker = function($$options) {
    // Defaults
    var $defaults = {
      color:new Array(
	"#000000", "#993300", "#333300", "#003300", "#003366", "#000080", "#333399", "#333333", 
	"#800000", "#FF6600", "#808000", "#008000", "#008080", "#0000FF", "#666699", "#808080", 
	"#FF0000", "#FF9900", "#99CC00", "#339966", "#33CCCC", "#3366FF", "#800080", "#969696", 
	"#FF00FF", "#FFCC00", "#FFFF00", "#00FF00", "#00FFFF", "#00CCFF", "#993366", "#C0C0C0", 
	"#FF99CC", "#FFCC99", "#FFFF99", "#CCFFCC", "#CCFFFF", "#99CCFF", "#CC99FF", "#FFFFFF" 
	), 
	  cnames:new Array(
	"Black", "Brown", "OliveGreen", "DarkGreen", "DarkTeal", "DarkBlue", "Indigo", "Gray80", 
	"DarkRed", "Orange", "DarkYellow", "Green", "Teal", "Blue", "BlueGray", "Gray50", 
	"Red", "LightOrange", "Lime", "SeaGreen", "Aqua", "LightBlue", "Violet", "Gray40", 
	"Pink", "Gold", "Yellow", "BrightGreen", "Turquoise", "SkyBlue", "Plum", "Gray25", 
	"Rose", "Tan", "LightYellow", "LightGreen", "LightTurquoise", "PaleBlue", "Lavender", "White" 
	),
      defaultColor: 0,
      columns: 0,
      click: function($color){}
    };
		
    var $settings = $.extend({}, $defaults, $$options);
		
    // Iterate and reformat each matched element
    return this.each(function() {
      var $this = $(this);
      // build element specific options
      var o = $.meta ? $.extend({}, $settings, $this.data()) : $settings;
      var $$oldIndex = typeof(o.defaultColor)=='number' ? o.defaultColor : -1;
      
      var _html = "";
      for(i=0;i<o.color.length;i++){
	_html += '<div id="' +o.cnames[i]+'" style="background-color:'+o.color[i]+';"></div>';
	if($$oldIndex==-1 && o.defaultColor==o.color[i]) $$oldIndex = i;
      }
      
      $this.html('<div class="jColorSelect">'+_html+'</div>');
      var $color = $this.children('.jColorSelect').children('div');
      // Set container width
      var w = ($color.width()+2+2) * (o.columns>0 ? o.columns : o.color.length );
      $this.children('.jColorSelect').css('width',w);
      
      // Subscribe to click event of each color box
      $color.each(function(i){
	$(this).click(function(){
	  if( $$oldIndex == i ) return;	  
	  if( $$oldIndex > -1 ){
	    cell = $color.eq($$oldIndex);
	    if(cell.hasClass('check')) cell.removeClass(
	      'check').removeClass('checkwht').removeClass('checkblk');
	  }
	  // Keep index
	  $$oldIndex = i;
	  $(this).addClass('check').addClass(isdark(o.color[i]) ? 'checkwht' : 'checkblk');
	  // Trigger user event
	  //o.click(o.color[i]);
	  o.click(o.cnames[i]);
	  var clicktitle = this.id;
	  //alert(clicktitle);
	});
      });
      
      // Simulate click for defaultColor
      _tmp = $$oldIndex;
      $$oldIndex = -1;
      $color.eq(_tmp).trigger('click');
    });    
    //return this;
	return clicktitle;
  };
  
  
})(jQuery);

/**
 * Return true if color is dark, false otherwise.
 * (C) 2008 Syronex / J.M. Rosengard
 **/
function isdark(color){
  var colr = parseInt(color.substr(1), 16);
  return (colr >>> 16) // R
    + ((colr >>> 8) & 0x00ff) // G 
    + (colr & 0x0000ff) // B
    < 500;
}