// jFrame
// $Revision: 1.1 $
// Author: Frederic de Zorzi
// Contact: fredz@_nospam_pimentech.net
// Revision: $Revision: 1.1 $
// Date: $Date: 2012/01/04 19:10:36 $
// Copyright: 2007-2009 PimenTech SARL
// Tags: ajax javascript pimentech english jquery

/// <reference path="../jquery-1.4.1.js" />


jQuery.fn.waitingJFrame = function () {
    // Overload this function in your code to place a waiting event
    // message, like :  $(this).html("<b>loading...</b>");
};

function _jsattr(elem, key) {
    var res = jQuery(elem).attr(key);
    if (res == undefined) {
        return function() {};
    }
    if (typeof res == 'string') {
        return function() { eval(res); };
    }
    return res;
}

function jFrameSubmitInput(input) {
    var target = jQuery(input).getJFrameTarget();
    if (target.length) {
        var form = input.form;

        if (form.onsubmit && form.onsubmit() == false
            || target.preloadJFrame() == false) {
            return false;
        }

        jQuery(form).ajaxSubmit({
            target: target,
            beforeSubmit: function (formArray) {
                formArray.push({ name: "dummytick", value: new Date().getTime() });
                formArray.push({ name: "submit", value: jQuery(input).attr("value") });
            },
            success: function () {
                target.attr("src", jQuery(form).attr("action"));
                _jsattr(target, "afterload")();
                target.activateJFrame();
            }
        });
        return false;
    }
    return true;
}

jQuery.fn.preloadJFrame = function(initial) {
    if (!initial && _jsattr(this, "beforeload")() == false) {
        return false;
    }
    jQuery(this).waitingJFrame();
    return true;
};

jQuery.fn.getJFrameTarget = function() {
    var target = jQuery(this).attr("target");
    if (target) {
        return jQuery("#" + target);
    }
    // Returns first parent jframe element, if exists
    return jQuery(jQuery(this).parents("div[src]").get(0));
};

jQuery.fn.loadJFrame = function (url, callback, initial) {
    // like ajax.load, for jFrame. the onload->afterload attribute is supported
    var this_callback = _jsattr(this, "afterload");
    callback = callback || function () { };
    url = url || jQuery(this).attr("src");
    if (url && url != "#") {
        if (jQuery(this).preloadJFrame(initial) == false) {
            return false;
        }

        // { dummytick: new Date().getTime() }, 

        jQuery(this).load(url,
                          function (responseText, textStatus, request) {

                              if (request.status == 200) {

                                  jQuery(this).attr("src", url);
                                  jQuery(this).activateJFrame();
                                  jQuery(this).find("div[src]").each(function (i) {
                                      jQuery(this).loadJFrame();
                                  });
                                  this_callback();
                                  callback();

                              }
                              else {
                                  $(this).xhrError(request);
                              }

                          });
    }
    else {
        jQuery(this).activateJFrame();
    }
    return true;
};

jQuery.fn.activateLink = function() {
    this.unbind("click");
	this.each(function () {
                  var oc = this.onclick;
                  this.onclick = null;
                  $(this).bind("click", function (event) { 
								   if (oc) {
									   if (!oc()) {
										   event.stopImmediatePropagation();
										   return false;
									   } 
								   }
								   return true;
							   });

			  });
    this.click(function() {
                   var target = jQuery(this).getJFrameTarget();
                   if (target.length) {
                       var href = jQuery(this).attr("href");
                       var toggle = jQuery(this).attr("toggle");
                       if (href && href.indexOf('javascript:') != 0) {
                           if (toggle == "on") {
                               target.hide();
                               jQuery(this).attr("toggle", "off");
                               return false;
                           }
                           if (toggle == "off") {
                               target.show();
                               jQuery(this).attr("toggle", "on");
                           }
                           target.loadJFrame(href);
                           return false;
                       }
                   }
                   return true;
               } )
        .attr("jframe","activated");
};

jQuery.fn.activateSubmitButton = function() {
    this.unbind("click")
        .click(function() {
                   return jFrameSubmitInput(this);
               } )
        .attr("jframe","activated");
};

jQuery.fn.activateJFrame = function() {
    // Add an onclick event on all <a> and <input type="submit"> tags
    jQuery(this).find("a")
        .not("[jframe='no']")
        .not("[jframe='activated']")
        .activateLink();

    jQuery(":image,:submit,:button", this)
        .not("[jframe='no']")
        .not("[jframe='activated']")
        .activateSubmitButton();

    if ($.browser.msie && $.browser.version.substr(0, 1) < 7) {
        // Only for IE6 : enter key invokes submit event
        jQuery(this).find("form")
        .unbind("submit")
        .submit(function() {
            return jFrameSubmitInput(jQuery(":image,:submit,:button", this).get(0));
        });
    }
};

jQuery(document).ready(
    function() {
        jQuery(document).find("div[src]").each(
            function(i) {
                jQuery(this).loadJFrame(undefined, undefined, true);
            });
        jQuery(document).find("a[jframe='activate']").activateLink();
        jQuery(":image,:submit,:button", document).find("[jframe='activate']").activateSubmitButton();
    });