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Viewing file:     config.js (23.76 KB)      -rw-rw-rw-

/* vim: set expandtab sw=4 ts=4 sts=4: */
/**
 * Functions used in configuration forms and on user preferences pages
 */

/**
 * Unbind all event handlers before tearing down a page
 */
AJAX.registerTeardown('config.js', function () {
    $('input[id], select[id], textarea[id]').unbind('change').unbind('keyup');
    $('input[type=button][name=submit_reset]').unbind('click');
    $('div.tabs_contents').undelegate();
    $('#import_local_storage, #export_local_storage').unbind('click');
    $('form.prefs-form').unbind('change').unbind('submit');
    $('div.click-hide-message').die('click');
    $('#prefs_autoload').find('a').unbind('click');
});

AJAX.registerOnload('config.js', function () {
    $('#topmenu2').find('li.active a').attr('rel', 'samepage');
    $('#topmenu2').find('li:not(.active) a').attr('rel', 'newpage');
});

// default values for fields
var defaultValues = {};

/**
 * Returns field type
 *
 * @param {Element} field
 */
function getFieldType(field)
{
    field = $(field);
    var tagName = field.prop('tagName');
    if (tagName == 'INPUT') {
        return field.attr('type');
    } else if (tagName == 'SELECT') {
        return 'select';
    } else if (tagName == 'TEXTAREA') {
        return 'text';
    }
    return '';
}

/**
 * Sets field value
 *
 * value must be of type:
 * o undefined (omitted) - restore default value (form default, not PMA default)
 * o String - if field_type is 'text'
 * o boolean - if field_type is 'checkbox'
 * o Array of values - if field_type is 'select'
 *
 * @param {Element} field
 * @param {String}  field_type  see {@link #getFieldType}
 * @param {String|Boolean}  [value]
 */
function setFieldValue(field, field_type, value)
{
    field = $(field);
    switch (field_type) {
    case 'text':
    case 'number':
        //TODO: replace to .val()
        field.attr('value', (value !== undefined ? value : field.attr('defaultValue')));
        break;
    case 'checkbox':
        //TODO: replace to .prop()
        field.attr('checked', (value !== undefined ? value : field.attr('defaultChecked')));
        break;
    case 'select':
        var options = field.prop('options');
        var i, imax = options.length;
        if (value === undefined) {
            for (i = 0; i < imax; i++) {
                options[i].selected = options[i].defaultSelected;
            }
        } else {
            for (i = 0; i < imax; i++) {
                options[i].selected = (value.indexOf(options[i].value) != -1);
            }
        }
        break;
    }
    markField(field);
}

/**
 * Gets field value
 *
 * Will return one of:
 * o String - if type is 'text'
 * o boolean - if type is 'checkbox'
 * o Array of values - if type is 'select'
 *
 * @param {Element} field
 * @param {String}  field_type returned by {@link #getFieldType}
 * @type Boolean|String|String[]
 */
function getFieldValue(field, field_type)
{
    field = $(field);
    switch (field_type) {
    case 'text':
    case 'number':
        return field.prop('value');
    case 'checkbox':
        return field.prop('checked');
    case 'select':
        var options = field.prop('options');
        var i, imax = options.length, items = [];
        for (i = 0; i < imax; i++) {
            if (options[i].selected) {
                items.push(options[i].value);
            }
        }
        return items;
    }
    return null;
}

/**
 * Returns values for all fields in fieldsets
 */
function getAllValues()
{
    var elements = $('fieldset input, fieldset select, fieldset textarea');
    var values = {};
    var type, value;
    for (var i = 0; i < elements.length; i++) {
        type = getFieldType(elements[i]);
        value = getFieldValue(elements[i], type);
        if (typeof value != 'undefined') {
            // we only have single selects, fatten array
            if (type == 'select') {
                value = value[0];
            }
            values[elements[i].name] = value;
        }
    }
    return values;
}

/**
 * Checks whether field has its default value
 *
 * @param {Element} field
 * @param {String}  type
 * @return boolean
 */
function checkFieldDefault(field, type)
{
    field = $(field);
    var field_id = field.attr('id');
    if (typeof defaultValues[field_id] == 'undefined') {
        return true;
    }
    var isDefault = true;
    var currentValue = getFieldValue(field, type);
    if (type != 'select') {
        isDefault = currentValue == defaultValues[field_id];
    } else {
        // compare arrays, will work for our representation of select values
        if (currentValue.length != defaultValues[field_id].length) {
            isDefault = false;
        }
        else {
            for (var i = 0; i < currentValue.length; i++) {
                if (currentValue[i] != defaultValues[field_id][i]) {
                    isDefault = false;
                    break;
                }
            }
        }
    }
    return isDefault;
}

/**
 * Returns element's id prefix
 * @param {Element} element
 */
function getIdPrefix(element)
{
    return $(element).attr('id').replace(/[^-]+$/, '');
}

// ------------------------------------------------------------------
// Form validation and field operations
//

// form validator assignments
var validate = {};

// form validator list
var validators = {
    // regexp: numeric value
    _regexp_numeric: /^[0-9]+$/,
    // regexp: extract parts from PCRE expression
    _regexp_pcre_extract: /(.)(.*)\1(.*)?/,
    /**
     * Validates positive number
     *
     * @param {boolean} isKeyUp
     */
    PMA_validatePositiveNumber: function (isKeyUp) {
        if (isKeyUp && this.value === '') {
            return true;
        }
        var result = this.value != '0' && validators._regexp_numeric.test(this.value);
        return result ? true : PMA_messages.error_nan_p;
    },
    /**
     * Validates non-negative number
     *
     * @param {boolean} isKeyUp
     */
    PMA_validateNonNegativeNumber: function (isKeyUp) {
        if (isKeyUp && this.value === '') {
            return true;
        }
        var result = validators._regexp_numeric.test(this.value);
        return result ? true : PMA_messages.error_nan_nneg;
    },
    /**
     * Validates port number
     *
     * @param {boolean} isKeyUp
     */
    PMA_validatePortNumber: function (isKeyUp) {
        if (this.value === '') {
            return true;
        }
        var result = validators._regexp_numeric.test(this.value) && this.value != '0';
        return result && this.value <= 65535 ? true : PMA_messages.error_incorrect_port;
    },
    /**
     * Validates value according to given regular expression
     *
     * @param {boolean} isKeyUp
     * @param {string}  regexp
     */
    PMA_validateByRegex: function (isKeyUp, regexp) {
        if (isKeyUp && this.value === '') {
            return true;
        }
        // convert PCRE regexp
        var parts = regexp.match(validators._regexp_pcre_extract);
        var valid = this.value.match(new RegExp(parts[2], parts[3])) !== null;
        return valid ? true : PMA_messages.error_invalid_value;
    },
    /**
     * Validates upper bound for numeric inputs
     *
     * @param {boolean} isKeyUp
     * @param {int} max_value
     */
    PMA_validateUpperBound: function (isKeyUp, max_value) {
        var val = parseInt(this.value, 10);
        if (isNaN(val)) {
            return true;
        }
        return val <= max_value ? true : $.sprintf(PMA_messages.error_value_lte, max_value);
    },
    // field validators
    _field: {
    },
    // fieldset validators
    _fieldset: {
    }
};

/**
 * Registers validator for given field
 *
 * @param {String}  id       field id
 * @param {String}  type     validator (key in validators object)
 * @param {boolean} onKeyUp  whether fire on key up
 * @param {Array}   params   validation function parameters
 */
function validateField(id, type, onKeyUp, params)
{
    if (typeof validators[type] == 'undefined') {
        return;
    }
    if (typeof validate[id] == 'undefined') {
        validate[id] = [];
    }
    validate[id].push([type, params, onKeyUp]);
}

/**
 * Returns valdiation functions associated with form field
 *
 * @param {String}  field_id     form field id
 * @param {boolean} onKeyUpOnly  see validateField
 * @type Array
 * @return array of [function, paramseters to be passed to function]
 */
function getFieldValidators(field_id, onKeyUpOnly)
{
    // look for field bound validator
    var name = field_id.match(/[^-]+$/)[0];
    if (typeof validators._field[name] != 'undefined') {
        return [[validators._field[name], null]];
    }

    // look for registered validators
    var functions = [];
    if (typeof validate[field_id] != 'undefined') {
        // validate[field_id]: array of [type, params, onKeyUp]
        for (var i = 0, imax = validate[field_id].length; i < imax; i++) {
            if (onKeyUpOnly && !validate[field_id][i][2]) {
                continue;
            }
            functions.push([validators[validate[field_id][i][0]], validate[field_id][i][1]]);
        }
    }

    return functions;
}

/**
 * Displays errors for given form fields
 *
 * WARNING: created DOM elements must be identical with the ones made by
 * display_input() in FormDisplay.tpl.php!
 *
 * @param {Object} error_list list of errors in the form {field id: error array}
 */
function displayErrors(error_list)
{
    for (var field_id in error_list) {
        var errors = error_list[field_id];
        var field = $('#' + field_id);
        var isFieldset = field.attr('tagName') == 'FIELDSET';
        var errorCnt;
        if (isFieldset) {
            errorCnt = field.find('dl.errors');
        } else {
            errorCnt = field.siblings('.inline_errors');
        }

        // remove empty errors (used to clear error list)
        errors = $.grep(errors, function (item) {
            return item !== '';
        });

        // CSS error class
        if (!isFieldset) {
            // checkboxes uses parent <span> for marking
            var fieldMarker = (field.attr('type') == 'checkbox') ? field.parent() : field;
            fieldMarker[errors.length ? 'addClass' : 'removeClass']('field-error');
        }

        if (errors.length) {
            // if error container doesn't exist, create it
            if (errorCnt.length === 0) {
                if (isFieldset) {
                    errorCnt = $('<dl class="errors" />');
                    field.find('table').before(errorCnt);
                } else {
                    errorCnt = $('<dl class="inline_errors" />');
                    field.closest('td').append(errorCnt);
                }
            }

            var html = '';
            for (var i = 0, imax = errors.length; i < imax; i++) {
                html += '<dd>' + errors[i] + '</dd>';
            }
            errorCnt.html(html);
        } else if (errorCnt !== null) {
            // remove useless error container
            errorCnt.remove();
        }
    }
}

/**
 * Validates fieldset and puts errors in 'errors' object
 *
 * @param {Element} fieldset
 * @param {boolean} isKeyUp
 * @param {Object}  errors
 */
function validate_fieldset(fieldset, isKeyUp, errors)
{
    fieldset = $(fieldset);
    if (fieldset.length && typeof validators._fieldset[fieldset.attr('id')] != 'undefined') {
        var fieldset_errors = validators._fieldset[fieldset.attr('id')].apply(fieldset[0], [isKeyUp]);
        for (var field_id in fieldset_errors) {
            if (typeof errors[field_id] == 'undefined') {
                errors[field_id] = [];
            }
            if (typeof fieldset_errors[field_id] == 'string') {
                fieldset_errors[field_id] = [fieldset_errors[field_id]];
            }
            $.merge(errors[field_id], fieldset_errors[field_id]);
        }
    }
}

/**
 * Validates form field and puts errors in 'errors' object
 *
 * @param {Element} field
 * @param {boolean} isKeyUp
 * @param {Object}  errors
 */
function validate_field(field, isKeyUp, errors)
{
    var args, result;
    field = $(field);
    var field_id = field.attr('id');
    errors[field_id] = [];
    var functions = getFieldValidators(field_id, isKeyUp);
    for (var i = 0; i < functions.length; i++) {
        if (typeof functions[i][1] !== 'undefined' && functions[i][1] !== null) {
            args = functions[i][1].slice(0);
        } else {
            args = [];
        }
        args.unshift(isKeyUp);
        result = functions[i][0].apply(field[0], args);
        if (result !== true) {
            if (typeof result == 'string') {
                result = [result];
            }
            $.merge(errors[field_id], result);
        }
    }
}

/**
 * Validates form field and parent fieldset
 *
 * @param {Element} field
 * @param {boolean} isKeyUp
 */
function validate_field_and_fieldset(field, isKeyUp)
{
    field = $(field);
    var errors = {};
    validate_field(field, isKeyUp, errors);
    validate_fieldset(field.closest('fieldset'), isKeyUp, errors);
    displayErrors(errors);
}

/**
 * Marks field depending on its value (system default or custom)
 *
 * @param {Element} field
 */
function markField(field)
{
    field = $(field);
    var type = getFieldType(field);
    var isDefault = checkFieldDefault(field, type);

    // checkboxes uses parent <span> for marking
    var fieldMarker = (type == 'checkbox') ? field.parent() : field;
    setRestoreDefaultBtn(field, !isDefault);
    fieldMarker[isDefault ? 'removeClass' : 'addClass']('custom');
}

/**
 * Enables or disables the "restore default value" button
 *
 * @param {Element} field
 * @param {boolean} display
 */
function setRestoreDefaultBtn(field, display)
{
    var el = $(field).closest('td').find('.restore-default img');
    el[display ? 'show' : 'hide']();
}

AJAX.registerOnload('config.js', function () {
    // register validators and mark custom values
    var elements = $('input[id], select[id], textarea[id]');
    $('input[id], select[id], textarea[id]').each(function () {
        markField(this);
        var el = $(this);
        el.bind('change', function () {
            validate_field_and_fieldset(this, false);
            markField(this);
        });
        var tagName = el.attr('tagName');
        // text fields can be validated after each change
        if (tagName == 'INPUT' && el.attr('type') == 'text') {
            el.keyup(function () {
                validate_field_and_fieldset(el, true);
                markField(el);
            });
        }
        // disable textarea spellcheck
        if (tagName == 'TEXTAREA') {
            el.attr('spellcheck', false);
        }
    });

    // check whether we've refreshed a page and browser remembered modified
    // form values
    var check_page_refresh = $('#check_page_refresh');
    if (check_page_refresh.length === 0 || check_page_refresh.val() == '1') {
        // run all field validators
        var errors = {};
        for (var i = 0; i < elements.length; i++) {
            validate_field(elements[i], false, errors);
        }
        // run all fieldset validators
        $('fieldset').each(function () {
            validate_fieldset(this, false, errors);
        });

        displayErrors(errors);
    } else if (check_page_refresh) {
        check_page_refresh.val('1');
    }
});

//
// END: Form validation and field operations
// ------------------------------------------------------------------

// ------------------------------------------------------------------
// Tabbed forms
//

/**
 * Sets active tab
 *
 * @param {String} tab_id
 */
function setTab(tab_id)
{
    $('ul.tabs li').removeClass('active').find('a[href=#' + tab_id + ']').parent().addClass('active');
    $('div.tabs_contents fieldset').hide().filter('#' + tab_id).show();
    location.hash = 'tab_' + tab_id;
    $('form.config-form input[name=tab_hash]').val(location.hash);
}

AJAX.registerOnload('config.js', function () {
    var tabs = $('ul.tabs');
    if (!tabs.length) {
        return;
    }
    // add tabs events and activate one tab (the first one or indicated by location hash)
    tabs.find('a')
        .click(function (e) {
            e.preventDefault();
            setTab($(this).attr('href').substr(1));
        })
        .filter(':first')
        .parent()
        .addClass('active');
    $('div.tabs_contents fieldset').hide().filter(':first').show();

    // tab links handling, check each 200ms
    // (works with history in FF, further browser support here would be an overkill)
    var prev_hash;
    var tab_check_fnc = function () {
        if (location.hash != prev_hash) {
            prev_hash = location.hash;
            if (location.hash.match(/^#tab_.+/) && $('#' + location.hash.substr(5)).length) {
                setTab(location.hash.substr(5));
            }
        }
    };
    tab_check_fnc();
    setInterval(tab_check_fnc, 200);
});

//
// END: Tabbed forms
// ------------------------------------------------------------------

// ------------------------------------------------------------------
// Form reset buttons
//

AJAX.registerOnload('config.js', function () {
    $('input[type=button][name=submit_reset]').click(function () {
        var fields = $(this).closest('fieldset').find('input, select, textarea');
        for (var i = 0, imax = fields.length; i < imax; i++) {
            setFieldValue(fields[i], getFieldType(fields[i]));
        }
    });
});

//
// END: Form reset buttons
// ------------------------------------------------------------------

// ------------------------------------------------------------------
// "Restore default" and "set value" buttons
//

/**
 * Restores field's default value
 *
 * @param {String} field_id
 */
function restoreField(field_id)
{
    var field = $('#' + field_id);
    if (field.length === 0 || defaultValues[field_id] === undefined) {
        return;
    }
    setFieldValue(field, getFieldType(field), defaultValues[field_id]);
}

AJAX.registerOnload('config.js', function () {
    $('div.tabs_contents')
        .delegate('.restore-default, .set-value', 'mouseenter', function () {
            $(this).css('opacity', 1);
        })
        .delegate('.restore-default, .set-value', 'mouseleave', function () {
            $(this).css('opacity', 0.25);
        })
        .delegate('.restore-default, .set-value', 'click', function (e) {
            e.preventDefault();
            var href = $(this).attr('href');
            var field_sel;
            if ($(this).hasClass('restore-default')) {
                field_sel = href;
                restoreField(field_sel.substr(1));
            } else {
                field_sel = href.match(/^[^=]+/)[0];
                var value = href.match(/\=(.+)$/)[1];
                setFieldValue($(field_sel), 'text', value);
            }
            $(field_sel).trigger('change');
        })
        .find('.restore-default, .set-value')
        // inline-block for IE so opacity inheritance works
        .css({display: 'inline-block', opacity: 0.25});
});

//
// END: "Restore default" and "set value" buttons
// ------------------------------------------------------------------

// ------------------------------------------------------------------
// User preferences import/export
//

AJAX.registerOnload('config.js', function () {
    offerPrefsAutoimport();
    var radios = $('#import_local_storage, #export_local_storage');
    if (!radios.length) {
        return;
    }

    // enable JavaScript dependent fields
    radios
        .prop('disabled', false)
        .add('#export_text_file, #import_text_file')
        .click(function () {
            var enable_id = $(this).attr('id');
            var disable_id;
            if (enable_id.match(/local_storage$/)) {
                disable_id = enable_id.replace(/local_storage$/, 'text_file');
            } else {
                disable_id = enable_id.replace(/text_file$/, 'local_storage');
            }
            $('#opts_' + disable_id).addClass('disabled').find('input').prop('disabled', true);
            $('#opts_' + enable_id).removeClass('disabled').find('input').prop('disabled', false);
        });

    // detect localStorage state
    var ls_supported = window.localStorage || false;
    var ls_exists = ls_supported ? (window.localStorage.config || false) : false;
    $('div.localStorage-' + (ls_supported ? 'un' : '') + 'supported').hide();
    $('div.localStorage-' + (ls_exists ? 'empty' : 'exists')).hide();
    if (ls_exists) {
        updatePrefsDate();
    }
    $('form.prefs-form').change(function () {
        var form = $(this);
        var disabled = false;
        if (!ls_supported) {
            disabled = form.find('input[type=radio][value$=local_storage]').prop('checked');
        } else if (!ls_exists && form.attr('name') == 'prefs_import' &&
            $('#import_local_storage')[0].checked
            ) {
            disabled = true;
        }
        form.find('input[type=submit]').prop('disabled', disabled);
    }).submit(function (e) {
        var form = $(this);
        if (form.attr('name') == 'prefs_export' && $('#export_local_storage')[0].checked) {
            e.preventDefault();
            // use AJAX to read JSON settings and save them
            savePrefsToLocalStorage(form);
        } else if (form.attr('name') == 'prefs_import' && $('#import_local_storage')[0].checked) {
            // set 'json' input and submit form
            form.find('input[name=json]').val(window.localStorage['config']);
        }
    });

    $('div.click-hide-message').live('click', function () {
        $(this)
        .hide()
        .parent('.group')
        .css('height', '')
        .next('form')
        .show();
    });
});

/**
 * Saves user preferences to localStorage
 *
 * @param {Element} form
 */
function savePrefsToLocalStorage(form)
{
    form = $(form);
    var submit = form.find('input[type=submit]');
    submit.prop('disabled', true);
    $.ajax({
        url: 'prefs_manage.php',
        cache: false,
        type: 'POST',
        data: {
            ajax_request: true,
            server: form.find('input[name=server]').val(),
            token: form.find('input[name=token]').val(),
            submit_get_json: true
        },
        success: function (data) {
            if (data.success === true) {
                window.localStorage['config'] = data.prefs;
                window.localStorage['config_mtime'] = data.mtime;
                window.localStorage['config_mtime_local'] = (new Date()).toUTCString();
                updatePrefsDate();
                $('div.localStorage-empty').hide();
                $('div.localStorage-exists').show();
                var group = form.parent('.group');
                group.css('height', group.height() + 'px');
                form.hide('fast');
                form.prev('.click-hide-message').show('fast');
            } else {
                PMA_ajaxShowMessage(data.error);
            }
        },
        complete: function () {
            submit.prop('disabled', false);
        }
    });
}

/**
 * Updates preferences timestamp in Import form
 */
function updatePrefsDate()
{
    var d = new Date(window.localStorage['config_mtime_local']);
    var msg = PMA_messages.strSavedOn.replace(
        '@DATE@',
        PMA_formatDateTime(d)
    );
    $('#opts_import_local_storage div.localStorage-exists').html(msg);
}

/**
 * Prepares message which informs that localStorage preferences are available and can be imported
 */
function offerPrefsAutoimport()
{
    var has_config = (window.localStorage || false) && (window.localStorage['config'] || false);
    var cnt = $('#prefs_autoload');
    if (!cnt.length || !has_config) {
        return;
    }
    cnt.find('a').click(function (e) {
        e.preventDefault();
        var a = $(this);
        if (a.attr('href') == '#no') {
            cnt.remove();
            $.post('index.php', {
                token: cnt.find('input[name=token]').val(),
                prefs_autoload: 'hide'
            });
            return;
        }
        cnt.find('input[name=json]').val(window.localStorage['config']);
        cnt.find('form').submit();
    });
    cnt.show();
}

//
// END: User preferences import/export
// ------------------------------------------------------------------