// jFrame
// $Revision: 1.132 $
// Author: Frederic de Zorzi
// Contact: fredz@_nospam_pimentech.net
// Revision: $Revision: 1.132 $
// Date: $Date: 2009-01-21 11:55:29 $
// Copyright: 2007-2008 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 (jQuery.browser.msie) {
        return function() { eval(res); };
    }
    return res;
}


function jFrameSubmitInput(input) {
    var target = jQuery(input).getJFrameTarget();
    if (target.attr('target') != "_top")
        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, "onload")();
                target.activateJFrame();
            }
        });
        return false;
    }
    return true;
}

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


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



jQuery.fn.loadJFrame = function(url, callback, initial) {
    // like ajax.load, for jFrame. the onload attribute is supported
    var this_callback = _jsattr(this, "onload");
    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();
    }
};

jQuery.fn.activateJFrame = function() {
    // Add an onclick event on all <a> and <input type="submit"> tags
    jQuery(this).find("a")
    .not("[jframe='no']")
    .unbind("click")
    .click(function() {
        var target = jQuery(this).getJFrameTarget();
        if (target.length) {
            var href = jQuery(this).attr("href");
            if (href && href.indexOf('javascript:') != 0) {
                target.loadJFrame(href);
                return false;
            }
        }
        return true;
    });

    jQuery(":image,:submit,:button", this)
    .not("[jframe='no']")
    .unbind("click")
    .click(function() {
        return jFrameSubmitInput(this);
    });

    // 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);
    });
});