// $Id: jstools.js,v 1.9.2.8 2007/08/08 21:26:07 nedjo Exp $

Drupal.behaviors = Drupal.behaviors || {};

/**
* Attach registered behaviors.
*/
Drupal.attachBehaviors = function(context) {
    context = context || document;
    if (Drupal.jsEnabled && Drupal.behaviors) {
        // Execute all of them.
        jQuery.each(Drupal.behaviors, function() {
            this(context);
        });
    }
};

Drupal.preventSelect = function(elt) {
    // IE hack to prevent selection of the text when users click.
    if (document.onselectstart) {
        elt.onselectstart = function() {
            return false;
        }
    }
    else {
        $(elt).mousedown(function() {
            return false;
        });
    }
};

/**
* Returns an event's source element.
*/
Drupal.getTarget = function(e) {
    if (!e) e = window.event;
    var target = e.target ? e.target : e.srcElement;
    if (!target) return null;
    if (target.nodeType == 3) target = target.parentNode; // safari weirdness		
    if (target.tagName.toUpperCase() == 'LABEL' && e.type == 'click') {
        // When clicking a label, firefox fires the input onclick event
        // but the label remains the source of the event. In Opera and IE 
        // the source of the event is the input element.
        if (target.getAttribute('for')) {
            target = document.getElementById(target.getAttribute('for'));
        }
    }
    return target;
};

Drupal.url = function(path, query, fragment) {
    query = query ? query : '';
    fragment = fragment ? '#' + fragment : '';
    var base = Drupal.settings.jstools.basePath;
    if (!Drupal.settings.jstools.cleanurls) {
        if (query) {
            return base + '?q=' + path + '&' + query + fragment;
        }
        else {
            return base + '?q=' + path + fragment;
        }
    }
    else {
        if (query) {
            return base + path + '?' + query + fragment;
        }
        else {
            return base + path + fragment;
        }
    }
};

/**
* Return the Drupal path portion of an href.
*/
Drupal.getPath = function(href) {
    href = Drupal.pathPortion(href);
    // 3 is the length of the '?q=' added to the url without clean urls.
    href = href.substring(Drupal.settings.jstools.basePath.length + (Drupal.settings.jstools.cleanurls ? 0 : 3), href.length);
    var chars = ['#', '?', '&'];
    for (i in chars) {
        if (href.indexOf(chars[i]) > -1) {
            href = href.substr(0, href.indexOf(chars[i]));
        }
    }
    return href;
};

/**
* Add a segment to the beginning of a path.
*/
Drupal.prependPath = function(href, segment) {
    href = Drupal.pathPortion(href);
    // 3 is the length of the '?q=' added to the url without clean urls.
    var baseLength = Drupal.settings.jstools.basePath.length + (Drupal.settings.jstools.cleanurls ? 0 : 3);
    var base = href.substring(0, baseLength);
    return base + segment + '/' + href.substring(baseLength, href.length);
};

/**
* Strip off the protocol plus domain from an href.
*/
Drupal.pathPortion = function(href) {
    // Remove e.g. http://example.com if present.
    var protocol = window.location.protocol;
    if (href.substring(0, protocol.length) == protocol) {
        // 2 is the length of the '//' that normally follows the protocol
        href = href.substring(href.indexOf('/', protocol.length + 2));
    }
    return href;
};

/**
* Redirects a form submission to a hidden iframe and displays the result
* in a given wrapper. The iframe should contain a call to
* window.parent.iframeHandler() after submission.
*/
Drupal.redirectFormSubmit = function(uri, form, handler) {
    $(form).submit(function() {
        // Create target iframe
        Drupal.createIframe();

        // Prepare variables for use in anonymous function.
        var form = this;

        // Redirect form submission to iframe
        this.action = uri;
        this.target = 'redirect-target';

        handler.onsubmit();

        // Set iframe handler for later
        window.iframeHandler = function() {
            var iframe = $('#redirect-target').get(0);

            // Get response from iframe body
            try {
                response = (iframe.contentWindow || iframe.contentDocument || iframe).document.body.innerHTML;
                // Firefox 1.0.x hack: Remove (corrupted) control characters
                response = response.replace(/[\f\n\r\t]/g, ' ');
                if (window.opera) {
                    // Opera-hack: it returns innerHTML sanitized.
                    response = response.replace(/"/g, '"');
                }
            }
            catch (e) {
                response = null;
            }

            response = Drupal.parseJson(response);
            // Check response code
            if (response.status == 0) {
                handler.onerror(response.data);
                return;
            }
            handler.oncomplete(response.data);

            return true;
        };

        return true;
    });
};

/**
* Scroll to a given element's vertical page position.
*/
Drupal.scrollTo = function(el) {
    var pos = Drupal.absolutePosition(el);
    window.scrollTo(0, pos.y);
};

Drupal.elementChildren = function(element) {
    var children = [];
    for (i in element) {
        if (i.substr(0, 1) != '#') {
            children[children.length] = i;
        }
    }
    return children;
};

Drupal.elementProperties = function(element) {
    var properties = [];
    for (i in element) {
        if (i.substr(0, 1) == '#') {
            properties[properties.length] = i;
        }
    }
    return properties;
};

Drupal.parseQueryString = function(href) {
    query = Drupal.getQueryString(href);
    var args = {};
    var pairs = query.split("&");
    for (var i = 0; i < pairs.length; i++) {
        var pos = pairs[i].indexOf('=');
        if (pos == -1) continue;
        var argname = pairs[i].substring(0, pos);
        var value = pairs[i].substring(pos + 1);
        args[argname] = unescape(value.replace(/\+/g, " "));
    }
    return args;
};

Drupal.getQueryString = function(href) {
    if (href) {
        var index = href.indexOf('?');
        href = (index == -1) ? '' : href.substring(index + 1);
    }
    query = href ? href : location.search.substring(1);
    if (!Drupal.settings.jstools.cleanurls) {
        var index = query.indexOf('&');
        query = (index == -1) ? '' : query.substring(index + 1);
    }
    return query;
};

Drupal.pathMatch = function(path, paths, type) {
    // Convert paths into a regular expression.
    paths = '^' + paths + '$';
    paths = paths.replace(/\n/g, '$|^');
    paths = paths.replace(/\*/g, '.*');
    var search = path.search(new RegExp(paths)) > -1 ? true : false;
    return (type == 0) ? search : !search;
};

if (Drupal.jsEnabled) {
    // 'js enabled' cookie
    document.cookie = 'has_js=1';
    // Attach all behaviors.
    $(document).ready(Drupal.attachBehaviors);
}