/**
 * Server error handler
 */
function Jaws_Ajax_ServerError(error) 
{
    //Take the error and parse to see if it's a JawsServerError or a bug in the code
    var errorMessage = error.message;
    //JawsServerError pattern
    var pattern = /^\[(.*?)\]\s+(-)\s+(.*?)/;
    //Test..
    if (pattern.test(errorMessage)) {
        var errorSplitted = errorMessage.split(pattern);
        var errorCode     = errorSplitted[1];
        errorMessage      = errorSplitted[4];
        switch(errorCode) {
        case 'NOPERMISSION': //Not granted?
            alert(errorMessage);
            break;
        case 'NOSESSION': //No session?
            // FIXME, using href of base tag instead of admin.php or if empty parsing URL
            window.location = 'admin.php';
            break;
        case 'NOTLOGGED': //Session expired?
            alert(errorMessage + '...');
            // FIXME, using href of base tag instead of admin.php or if empty parsing URL
            window.location = 'admin.php';
            break;            
        }
    }
}
/**
 * Repaints a combo
 */
function paintCombo(combo, oddColor, evenColor)
{
    if (evenColor == undefined) {
        evenColor = '#fff';
    }

    var color  = evenColor;
    for(var i=0; i<combo.length; i++) {
        combo.options[i].style.backgroundColor = color;;
        if (i % 2 == 0) {
            color = oddColor;
        } else {
            color = evenColor;
        }
    }
}

/**
 * Change the value of the editor/textarea
 */
function changeEditorValue(name, value)
{
    var usingMCE = typeof tinyMCE == 'undefined' ? false : true;
    var editor = usingMCE? tinyMCE.get(name) : null;
    if (editor) {
        editor.setContent(value);
    } else {
        $(name).value = value;
    }
}

/**
 * Get the value of the editor/textarea
 */
function getEditorValue(name)
{
    var usingMCE = typeof tinyMCE == 'undefined' ? false : true;
    if (usingMCE) {
        var editor = tinyMCE.get(name);
        return editor.getContent();
    } else {
        return $(name).value;
    }
}

/**
 * Reset a (piwi)datagrid:
 *  - Clean all data
 *  - Set the new data
 *  - Repaint
 */
function resetGrid(name, data)
{
    $(name).reset();
    $(name).fillWithArray(data);
    $(name).updatePageCounter();
    $(name).repaint();
}

/**
 * Class JawsDatagrid
 */
var JawsDataGrid = {

    /**
     * Get the previous Values and prepares the datagrid
     */
    getPreviousValues: function() {
        var previousValues = $(this.name).getPreviousPagerValues();
        var ajaxObject     = $(this.name).objectName;
        var result         = ajaxObject.getdata(previousValues, $(this.name).id);
        resetGrid($(this.name), result);
        $(this.name).previousPage();
    },

    /**
     * Get the next Values and prepares the datagrid
     */
    getNextValues: function() {
        var nextValues     = $(this.name).getNextPagerValues();
        var ajaxObject     = $(this.name).objectName;
        var result         = ajaxObject.getdata(nextValues, $(this.name).id);
        resetGrid($(this.name), result);
        $(this.name).nextPage();
    },

    /**
     * Only retrieves information with the current page the pager has and prepares the datagrid
     */
    getData: function() {
        var currentPage = $(this.name).getCurrentPage();
        var ajaxObject  = $(this.name).objectName;
        var result      = ajaxObject.getdata(currentPage, $(this.name).id);
        resetGrid($(this.name), result);
    }
}

/**
 * Prepares the datagrid with basic data
 */
function initDataGrid(name, objectName)
{
    if ($(name) == undefined || objectName == undefined) {
        return true;
    }

    $(name).objectName = objectName;
    JawsDataGrid.name  = name;

    $(name + '_pagerPreviousAnchor').onclick = function() {
        JawsDataGrid.getPreviousValues();
    }
    $(name + '_pagerNextAnchor').onclick = function() {
        JawsDataGrid.getNextValues();
    }

    getDG();
}

/**
 * Fast method to retrieve datagrid data
 */
function getDG()
{
    JawsDataGrid.getData();
}


/**
 * Changes the text of a button with a stock
 */
function changeButtonText(button, message)
{
    var buttonInner = button.innerHTML.substr(0, button.innerHTML.indexOf("&nbsp;"));
    button.innerHTML = buttonInner + "&nbsp;" + message;
    button.value     = message;
}

/**
 * Similar to PHP-trim fuction
 */
function jawsTrim(str)
{
    return str.replace(/^\s*|\s*$/g, '');
}

function initJawsObservers()
{
    var forms = document.getElementsByTagName('form');
    for(var i=0; i<forms.length; i++) {
        new Form.Observer(forms[i], 1, jawsFormCallback);
    }
}


function jawsFormCallback(form, elements)
{
    elements = elements.split('&');
    for(var i=0; i<elements.length; i++) {
        var elementName = elements[i].split('=')[0];
        var element     = form.elements[elementName];
        switch(element.type) {
        case 'text':
            element.value = element.value.unescapeHTML();
            break;
        }
        //var element = $(element
        //alert($elements.type);
    }
}

/**
 * Creates an image link
 *
 *   <a href="link"><img src="imgSrc" border="0" title="text" /></a>
 */
function createImageLink(imgSrc, link, text, space)
{
    var linkElement = document.createElement('a');
    linkElement.href = link;
    if (space == true) {
        linkElement.style.paddingRight = '3px';
    }

    var image = document.createElement('img');
    image.border = '0';
    image.src = imgSrc;
    image.title = text;

    linkElement.appendChild(image);

    return linkElement;
}

/**
 * Resets a combo
 */
function resetCombo(combo)
{
    while(combo.options.length != 0) {
        combo.options[0] = null;
    }
}

/**
 * Prepares the datepicker with basic data
 */
function initDatePicker(name)
{
    Calendar.setup({
        inputField: name,
        ifFormat: "%Y-%m-%d %H:%M:%S",
        button: name + "_button",
        singleClick: true,
        weekNumbers: false,
        firstDay: 0,
        date: $(name).value,
        showsTime: true,
        multiple: false});
}