/* Copyright (c) 2008 Kean Loong Tan http://www.gimiti.com/kltan
 * Licensed under the MIT (http://www.opensource.org/licenses/mit-license.php)
 * Version: 1.1 (March 26, 2008)
 * Requires: jQuery 1.2+
 */
 
(function($) {

    var dialogDisplayed = false;
    var currentPos = true;
    $.fn.createDialog = function(options) {
		// Extend our default options with those provided.
        var opts = $.extend({}, $.fn.createDialog.defaults, options);
        $(this).live('click', function(e){
			// this fragment was added by Razmik 
			if( opts._default == true){							
				for(i in opts._default_data_by){
					opts.data[i] = $(this).attr(opts._default_data_by[i]);
				}		
			}					
			// end of fragment
			
			currentPos = opts.center;
            if (!dialogDisplayed) { //display dialog if none is there
                $("body").prepend('<div id="jDialogOverlay"></div><div id="jDialogContainer"></div>');
                overlayPos(1);
                dialogDisplayed=true;
            }
            
            if(opts.progress)
                $("#jDialogProgressBar").show();
            $.ajax({
                type: opts.method,
                data: opts.data,
                url: opts.addr  +  $("#current_vacancy_id").html(),
                success: function(msg){
                    $("#jDialogContainer").html(msg);
                    if (currentPos)
                        reposition();
                    $("#jDialogProgressBar").fadeOut(900);
                    opts.success();
                }
            });
            //only IE6 needs this function
            if($.browser.msie && parseInt($.browser.version) < 7) {
                $(window).scroll(function(){
                    if(dialogDisplayed==1) {
                        overlayPos();
                        if (currentPos)
                            reposition();
                    }
                });
            }
            $(window).resize(function(){
                if (dialogDisplayed==1) {
                    overlayPos();
                    if (currentPos)
                        reposition();
                }
            });
            
            $(window).unload( function () {
                if (dialogDisplayed==1)
                    $.closeDialog();
            });
            
            $(window).keydown(function(event){
                if (event.keyCode == 27) 
                    $.closeDialog();
            });

        });
        
        //private function
        function overlayPos(init){
            var left = 0;
            var top = 0;
            var overlayWidth = $(window).width();
            var overlayHeight = $(document).height();
            var winHeight =  $(window).height();

            if ($.browser.msie && parseInt($.browser.version) < 7) { //if IE6
                $("#jDialogOverlay").css({
                                      top: 0, 
                                      left: 0, 
                                      width: overlayWidth, 
                                      height: overlayHeight, 
                                      position: "absolute",
                                      display: "block",
                                      color: opts.bg,
                                      zIndex: opts.index
                                  });
            }
            else { //other browsers
                $("#jDialogOverlay").css({
                                      top: 0, 
                                      left: 0, 
                                      width: overlayWidth, 
                                      height: winHeight, 
                                      position: "fixed",
                                      display: "block",
                                      background: opts.bg,
                                      zIndex: opts.index
                                  }).show();
            }
            
            if (init==1) {
                $("#jDialogOverlay").css("opacity", 0);
                $("#jDialogOverlay").fadeTo(200, opts.opacity);
            }
        }
        
        //private function
        $.repositionModal = function() {
            reposition()
        };
        
        
        function reposition(){ //calculate the position
            var left = 0;
            var top = 0;
            var winWidth = $(window).width();
            var winHeight =  $(window).height();
            var dialogHeight = $("#jDialogContainer").children().height();
            var dialogWidth = $("#jDialogContainer").children().width();
        
            if ($.browser.msie) {
                left = document.body.scrollLeft || document.documentElement.scrollLeft;
                top = document.body.scrollTop || document.documentElement.scrollTop;
            }
            else {
                left = window.pageXOffset;
                top = window.pageYOffset;
            }
        
            var topOff = top + winHeight/2 - dialogHeight/2; //offset for IE6
            var leftOff = left + winWidth/2 - dialogWidth/2; //offset for IE6
            var topFixed = topOff - top;
            var leftFixed = leftOff - left;

            topOff -= 0;
            topFixed -= 0;

            if (topOff < 10)
            {
                topOff = 10;
            }

            if (topFixed < 10)
            {
                topFixed = 10;
            }
            
            if ($.browser.msie && parseInt($.browser.version) < 7) { // IE6
                //IE 6 fix
                $("select").hide();
                //IE 6 fix
                $("#jDialogContainer select").show(); 
                //IE6 doesn't support fixed position
                $("#jDialogContainer").children().css({
                                                          top: topOff,
                                                          left: leftOff,
                                                          position: "absolute",
                                                          zIndex: (opts.index+1)
                                                      }).show(); 
            }
            else{   // firefox and IE7
                $("#jDialogContainer").children().css({
                                                          top: topFixed, 
                                                          left: leftFixed, 
                                                          position: "fixed", 
                                                          zIndex: (opts.index+1)
                                                      }).show();
            }
        }
    };
    
    $.fn.createDialog.defaults = {
        progress: true,
        center: true,
        method: 'GET',
        data: '',
        opacity: 0.4,
        bg: '#000000',
        index: 2000,
        success: function(){}
    };
    
    $.closeDialog = function(){
        dialogDisplayed=false;
        if($.browser.msie && parseInt($.browser.version) < 7) //IE6 bug
            $("select").show();
        //fade out and remove DOM nodes
        $("#jDialogOverlay").fadeTo(400, 0, function(){
            $("#jDialogContainer, #jDialogOverlay, #jDialogProgressBar").remove();
        });
    };

})(jQuery);