// jFrame
// $Revision: 1.137 $
// Author: Frederic de Zorzi
// Contact: fredz@_nospam_pimentech.net
// Revision: $Revision: 1.137 $
// Date: $Date: 2009-12-06 13:13:12 $
// Copyright: 2007-2009 PimenTech SARL
// Tags: ajax javascript pimentech english jquery


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

jQuery.fn.activateLink = function() {
  this.unbind("click")
    .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();

  // 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();
  } );