/**
* phpBB3 forum functions
*/

/**
* Window popup
*/
function popup(url, width, height, name)
{
    if (!name)
    {
        name = '_popup';
    }

    window.open(url.replace(/&/g, '&'), name, 'height=' + height + ',resizable=yes,scrollbars=yes, width=' + width);
    return false;
}

/**
* Jump to page
*/
// www.phpBB-SEO.com SEO TOOLKIT BEGIN
function jumpto() {
    var page = prompt(jump_page, on_page);

    if (page !== null && !isNaN(page) && page == Math.floor(page) && page > 0) {
        var seo_page = (page - 1) * per_page;
        var anchor = '';
        var anchor_parts = base_url.split('#');
        if ( anchor_parts[1] ) {
            base_url = anchor_parts[0];
            anchor = '#' + anchor_parts[1];
        }
        if ( base_url.indexOf('?') >= 0 ) {
            document.location.href = base_url.replace(/&/g, '&') + '&start=' + seo_page + anchor;
        } else if ( seo_page > 0 ) {
            var seo_type1 = base_url.match(/\.[a-z0-9]+$/i);
            if (seo_type1 !== null) {
                document.location.href = base_url.replace(/\.[a-z0-9]+$/i, '') + seo_delim_start + seo_page + seo_type1 + anchor;
            }
            var seo_type2 = base_url.match(/\/$/);
            if (seo_type2 !== null) {
                document.location.href = base_url + seo_static_pagination + seo_page + seo_ext_pagination + anchor;
            }
        } else {
            document.location.href = base_url + anchor;
        }
    }
}
// Open external links in new window in a XHTML 1.x compliant way.
/**
*  phpbb_seo_href()
*  Fixes href="#something" links with virtual directories
*  Optionally open external or marked with a css class links in a new window
*  in a XHTML 1.x compliant way.
*/
function phpbb_seo_href() {
    var current_domain = document.domain.toLowerCase();
    if (!current_domain || !document.getElementsByTagName) return;
    if (seo_external_sub && current_domain.indexOf('.') >= 0) {
        current_domain = current_domain.replace(new RegExp(/^[a-z0-9_-]+\.([a-z0-9_-]+\.([a-z]{2,6}|[a-z]{2,3}\.[a-z]{2,3}))$/i), '$1');
    }
    if (seo_ext_classes) {
        var extclass = new RegExp("(^|\s)(" + seo_ext_classes + ")(\s|$)");
    }
    if (seo_hashfix) {
        var basehref = document.getElementsByTagName('base')[0];
        if (basehref) {
            basehref = basehref.href;
            var hashtest = new RegExp("^(" + basehref + "|)#[a-z0-9_-]+$");
            var current_href = document.location.href.replace(/#[a-z0-9_-]+$/i, "");
        } else {
            seo_hashfix = false;
        }
    }
    var hrefels = document.getElementsByTagName("a");
    var hrefelslen = hrefels.length;
    for (var i = 0; i < hrefelslen; i++) {
        var el = hrefels[i];
        var hrefinner = el.innerHTML.toLowerCase();
        if (el.onclick || (el.href == '') || (el.href.indexOf('javascript') >=0 ) || (el.href.indexOf('mailto') >=0 ) || (hrefinner.indexOf('<a') >= 0) ) {
            continue;
        }
        if (seo_hashfix && el.hash && hashtest.test(el.href)) {
            el.href = current_href + el.hash;
        }
        if (seo_external) {
            if ((el.href.indexOf(current_domain) >= 0) && !(seo_ext_classes && extclass.test(el.className))) {
                continue;
            }
            el.onclick = function () { window.open(this.href); return false; };
        }
    }
}
var seo_external;
var seo_hashfix;
if (seo_external || seo_hashfix) {
    onload_functions.push('phpbb_seo_href()');
}
// www.phpBB-SEO.com SEO TOOLKIT END

/**
* Mark/unmark checklist
* id = ID of parent container, name = name prefix, state = state [true/false]
*/
function marklist(id, name, state)
{
    var parent = document.getElementById(id);
    if (!parent)
    {
        eval('parent = document.' + id);
    }

    if (!parent)
    {
        return;
    }

    var rb = parent.getElementsByTagName('input');

    for (var r = 0; r < rb.length; r++)
    {
        if (rb[r].name.substr(0, name.length) == name)
        {
            rb[r].checked = state;
        }
    }
}

/**
* Resize viewable area for attached image or topic review panel (possibly others to come)
* e = element
*/
function viewableArea(e, itself)
{
    if (!e) return;
    if (!itself)
    {
        e = e.parentNode;
    }

    if (!e.vaHeight)
    {
        // Store viewable area height before changing style to auto
        e.vaHeight = e.offsetHeight;
        e.vaMaxHeight = e.style.maxHeight;
        e.style.height = 'auto';
        e.style.maxHeight = 'none';
        e.style.overflow = 'visible';
    }
    else
    {
        // Restore viewable area height to the default
        e.style.height = e.vaHeight + 'px';
        e.style.overflow = 'auto';
        e.style.maxHeight = e.vaMaxHeight;
        e.vaHeight = false;
    }
}

/**
* Set display of page element
* s[-1,0,1] = hide,toggle display,show
*/
function dE(n, s)
{
    var e = document.getElementById(n);

    if (!s)
    {
        s = (e.style.display == '' || e.style.display == 'block') ? -1 : 1;
    }
    e.style.display = (s == 1) ? 'block' : 'none';
}

/**
* Alternate display of subPanels
*/
function subPanels(p)
{
    var i, e, t;

    if (typeof(p) == 'string')
    {
        show_panel = p;
    }

    for (i = 0; i < panels.length; i++)
    {
        e = document.getElementById(panels[i]);
        t = document.getElementById(panels[i] + '-tab');

        if (e)
        {
            if (panels[i] == show_panel)
            {
                e.style.display = 'block';
                if (t)
                {
                    t.className = 'activetab';
                }
            }
            else
            {
                e.style.display = 'none';
                if (t)
                {
                    t.className = '';
                }
            }
        }
    }
}

/**
* Call print preview
*/
function printPage()
{
    if (is_ie)
    {
        printPreview();
    }
    else
    {
        window.print();
    }
}

/**
* Show/hide groups of blocks
* c = CSS style name
* e = checkbox element
* t = toggle dispay state (used to show 'grip-show' image in the profile block when hiding the profiles)
*/
function displayBlocks(c, e, t)
{
    var s = (e.checked == true) ?  1 : -1;

    if (t)
    {
        s *= -1;
    }

    var divs = document.getElementsByTagName("DIV");

    for (var d = 0; d < divs.length; d++)
    {
        if (divs[d].className.indexOf(c) == 0)
        {
            divs[d].style.display = (s == 1) ? 'none' : 'block';
        }
    }
}

function selectCode(a)
{
    // Get ID of code block
    var e = a.parentNode.parentNode.getElementsByTagName('CODE')[0];

    // Not IE
    if (window.getSelection)
    {
        var s = window.getSelection();
        // Safari
        if (s.setBaseAndExtent)
        {
            s.setBaseAndExtent(e, 0, e, e.innerText.length - 1);
        }
        // Firefox and Opera
        else
        {
            // workaround for bug # 42885
            if (window.opera && e.innerHTML.substring(e.innerHTML.length - 4) == '<BR>')
            {
                e.innerHTML = e.innerHTML + '&nbsp;';
            }

            var r = document.createRange();
            r.selectNodeContents(e);
            s.removeAllRanges();
            s.addRange(r);
        }
    }
    // Some older browsers
    else if (document.getSelection)
    {
        var s = document.getSelection();
        var r = document.createRange();
        r.selectNodeContents(e);
        s.removeAllRanges();
        s.addRange(r);
    }
    // IE
    else if (document.selection)
    {
        var r = document.body.createTextRange();
        r.moveToElementText(e);
        r.select();
    }
}

/**
* Play quicktime file by determining it's width/height
* from the displayed rectangle area
*/
function play_qt_file(obj)
{
    var rectangle = obj.GetRectangle();

    if (rectangle)
    {
        rectangle = rectangle.split(',');
        var x1 = parseInt(rectangle[0]);
        var x2 = parseInt(rectangle[2]);
        var y1 = parseInt(rectangle[1]);
        var y2 = parseInt(rectangle[3]);

        var width = (x1 < 0) ? (x1 * -1) + x2 : x2 - x1;
        var height = (y1 < 0) ? (y1 * -1) + y2 : y2 - y1;
    }
    else
    {
        var width = 200;
        var height = 0;
    }

    obj.width = width;
    obj.height = height + 16;

    obj.SetControllerVisible(true);
    obj.Play();
}

/**
* Check if the nodeName of elem is name
* @author jQuery
*/
function is_node_name(elem, name)
{
    return elem.nodeName && elem.nodeName.toUpperCase() == name.toUpperCase();
}

/**
* Check if elem is in array, return position
* @author jQuery
*/
function is_in_array(elem, array)
{
    for (var i = 0, length = array.length; i < length; i++)
        // === is correct (IE)
        if (array[i] === elem)
            return i;

    return -1;
}

/**
* Find Element, type and class in tree
* Not used, but may come in handy for those not using JQuery
* @author jQuery.find, Meik Sievertsen
*/
function find_in_tree(node, tag, type, class_name)
{
    var result, element, i = 0, length = node.childNodes.length;

    for (element = node.childNodes[0]; i < length; element = node.childNodes[++i])
    {
        if (!element || element.nodeType != 1) continue;

        if ((!tag || is_node_name(element, tag)) && (!type || element.type == type) && (!class_name || is_in_array(class_name, (element.className || element).toString().split(/\s+/)) > -1))
        {
            return element;
        }

        if (element.childNodes.length)
            result = find_in_tree(element, tag, type, class_name);

        if (result) return result;
    }
}

var in_autocomplete = false;
var last_key_entered = '';

/**
* Check event key
*/
function phpbb_check_key(event)
{
    // Keycode is array down or up?
    if (event.keyCode && (event.keyCode == 40 || event.keyCode == 38))
        in_autocomplete = true;

    // Make sure we are not within an "autocompletion" field
    if (in_autocomplete)
    {
        // If return pressed and key changed we reset the autocompletion
        if (!last_key_entered || last_key_entered == event.which)
        {
            in_autocompletion = false;
            return true;
        }
    }

    // Keycode is not return, then return. ;)
    if (event.which != 13)
    {
        last_key_entered = event.which;
        return true;
    }

    return false;
}

/**
* Usually used for onkeypress event, to submit a form on enter
*/
function submit_default_button(event, selector, class_name)
{
    // Add which for key events
    if (!event.which && ((event.charCode || event.charCode === 0) ? event.charCode : event.keyCode))
        event.which = event.charCode || event.keyCode;

    if (phpbb_check_key(event))
        return true;

    var current = selector['parentNode'];

    // Search parent form element
    while (current && (!current.nodeName || current.nodeType != 1 || !is_node_name(current, 'form')) && current != document)
        current = current['parentNode'];

    // Find the input submit button with the class name
    //current = find_in_tree(current, 'input', 'submit', class_name);
    var input_tags = current.getElementsByTagName('input');
    current = false;

    for (var i = 0, element = input_tags[0]; i < input_tags.length; element = input_tags[++i])
    {
        if (element.type == 'submit' && is_in_array(class_name, (element.className || element).toString().split(/\s+/)) > -1)
            current = element;
    }

    if (!current)
        return true;

    // Submit form
    current.focus();
    current.click();
    return false;
}

/**
* Apply onkeypress event for forcing default submit button on ENTER key press
* The jQuery snippet used is based on http://greatwebguy.com/programming/dom/default-html-button-submit-on-enter-with-jquery/
* The non-jQuery code is a mimick of the jQuery code ;)
*/
function apply_onkeypress_event()
{
    // jQuery code in case jQuery is used
    if (jquery_present)
    {
        jQuery('form input[type=text], form input[type=password]').live('keypress', function (e)
        {
            var default_button = jQuery(this).parents('form').find('input[type=submit].default-submit-action');

            if (!default_button || default_button.length <= 0)
                return true;

            if (phpbb_check_key(e))
                return true;

            if ((e.which && e.which == 13) || (e.keyCode && e.keyCode == 13))
            {
                default_button.click();
                return false;
            }

            return true;
        });

        return;
    }

    var input_tags = document.getElementsByTagName('input');

    for (var i = 0, element = input_tags[0]; i < input_tags.length ; element = input_tags[++i])
    {
        if (element.type == 'text' || element.type == 'password')
        {
            // onkeydown is possible too
            element.onkeypress = function (evt) { submit_default_button((evt || window.event), this, 'default-submit-action'); };
        }
    }
}

/**
* Detect JQuery existance. We currently do not deliver it, but some styles do, so why not benefit from it. ;)
*/
var jquery_present = typeof jQuery == 'function';