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Filename : FormDisplayTemplate.php
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<?php
/* vim: set expandtab sw=4 ts=4 sts=4: */
/**
 * Form templates
 *
 * @package PhpMyAdmin
 */
namespace PhpMyAdmin\Config;

use PhpMyAdmin\Sanitize;
use PhpMyAdmin\Template;
use PhpMyAdmin\Url;
use PhpMyAdmin\Util;

/**
 * PhpMyAdmin\Config\FormDisplayTemplate class
 *
 * @package PhpMyAdmin
 */
class FormDisplayTemplate
{
    /**
     * Displays top part of the form
     *
     * @param string     $action        default: $_SERVER['REQUEST_URI']
     * @param string     $method        'post' or 'get'
     * @param array|null $hidden_fields array of form hidden fields (key: field name)
     *
     * @return string
     */
    public static function displayFormTop($action = null, $method = 'post', $hidden_fields = null)
    {
        static $has_check_page_refresh = false;

        if ($action === null) {
            $action = $_SERVER['REQUEST_URI'];
        }
        if ($method != 'post') {
            $method = 'get';
        }
        $htmlOutput = '<form method="' . $method . '" action="'
            . htmlspecialchars($action) . '" class="config-form disableAjax">';
        $htmlOutput .= '<input type="hidden" name="tab_hash" value="" />';
        // we do validation on page refresh when browser remembers field values,
        // add a field with known value which will be used for checks
        if (! $has_check_page_refresh) {
            $has_check_page_refresh = true;
            $htmlOutput .= '<input type="hidden" name="check_page_refresh" '
                . ' id="check_page_refresh" value="" />' . "\n";
        }
        $htmlOutput .= Url::getHiddenInputs('', '', 0, 'server') . "\n";
        $htmlOutput .= Url::getHiddenFields((array)$hidden_fields);
        return $htmlOutput;
    }

    /**
     * Displays form tabs which are given by an array indexed by fieldset id
     * ({@link self::displayFieldsetTop}), with values being tab titles.
     *
     * @param array $tabs tab names
     *
     * @return string
     */
    public static function displayTabsTop(array $tabs)
    {
        $items = array();
        foreach ($tabs as $tab_id => $tab_name) {
            $items[] = array(
                'content' => htmlspecialchars($tab_name),
                'url' => array(
                    'href' => '#' . $tab_id,
                ),
            );
        }

        $htmlOutput = Template::get('list/unordered')->render(
            array(
                'class' => 'tabs responsivetable',
                'items' => $items,
            )
        );
        $htmlOutput .= '<br />';
        $htmlOutput .= '<div class="tabs_contents">';
        return $htmlOutput;
    }

    /**
     * Displays top part of a fieldset
     *
     * @param string     $title       title of fieldset
     * @param string     $description description shown on top of fieldset
     * @param array|null $errors      error messages to display
     * @param array      $attributes  optional extra attributes of fieldset
     *
     * @return string
     */
    public static function displayFieldsetTop(
        $title = '',
        $description = '',
        $errors = null,
        array $attributes = array()
    ) {
        global $_FormDisplayGroup;

        $_FormDisplayGroup = 0;

        $attributes = array_merge(array('class' => 'optbox'), $attributes);

        return Template::get('config/form_display/fieldset_top')->render([
            'attributes' => $attributes,
            'title' => $title,
            'description' => $description,
            'errors' => $errors,
        ]);
    }

    /**
     * Displays input field
     *
     * $opts keys:
     * o doc - (string) documentation link
     * o errors - error array
     * o setvalue - (string) shows button allowing to set predefined value
     * o show_restore_default - (boolean) whether show "restore default" button
     * o userprefs_allow - whether user preferences are enabled for this field
     *                    (null - no support, true/false - enabled/disabled)
     * o userprefs_comment - (string) field comment
     * o values - key - value pairs for <select> fields
     * o values_escaped - (boolean) tells whether values array is already escaped
     *                    (defaults to false)
     * o values_disabled -  (array)list of disabled values (keys from values)
     * o comment - (string) tooltip comment
     * o comment_warning - (bool) whether this comments warns about something
     *
     * @param string     $path             config option path
     * @param string     $name             config option name
     * @param string     $type             type of config option
     * @param mixed      $value            current value
     * @param string     $description      verbose description
     * @param bool       $value_is_default whether value is default
     * @param array|null $opts             see above description
     *
     * @return string
     */
    public static function displayInput($path, $name, $type, $value, $description = '',
        $value_is_default = true, $opts = null
    ) {
        global $_FormDisplayGroup;
        static $icons;    // An array of IMG tags used further below in the function

        if (defined('TESTSUITE')) {
            $icons = null;
        }

        $is_setup_script = $GLOBALS['PMA_Config']->get('is_setup');
        if ($icons === null) { // if the static variables have not been initialised
            $icons = array();
            // Icon definitions:
            // The same indexes will be used in the $icons array.
            // The first element contains the filename and the second
            // element is used for the "alt" and "title" attributes.
            $icon_init = array(
                'edit'   => array('b_edit', ''),
                'help'   => array('b_help', __('Documentation')),
                'reload' => array('s_reload', ''),
                'tblops' => array('b_tblops', '')
            );
            if ($is_setup_script) {
                // When called from the setup script, we don't have access to the
                // sprite-aware getImage() function because the PMA_theme class
                // has not been loaded, so we generate the img tags manually.
                foreach ($icon_init as $k => $v) {
                    $title = '';
                    if (! empty($v[1])) {
                        $title = ' title="' . $v[1] . '"';
                    }
                    $icons[$k] = sprintf(
                        '<img alt="%s" src="%s"%s />',
                        $v[1],
                        "../themes/pmahomme/img/{$v[0]}.png",
                        $title
                    );
                }
            } else {
                // In this case we just use getImage() because it's available
                foreach ($icon_init as $k => $v) {
                    $icons[$k] = Util::getImage(
                        $v[0], $v[1]
                    );
                }
            }
        }
        $has_errors = isset($opts['errors']) && !empty($opts['errors']);
        $option_is_disabled = ! $is_setup_script && isset($opts['userprefs_allow'])
            && ! $opts['userprefs_allow'];
        $name_id = 'name="' . htmlspecialchars($path) . '" id="'
            . htmlspecialchars($path) . '"';
        $field_class = $type == 'checkbox' ? 'checkbox' : '';
        if (! $value_is_default) {
            $field_class .= ($field_class == '' ? '' : ' ')
                . ($has_errors ? 'custom field-error' : 'custom');
        }
        $field_class = $field_class ? ' class="' . $field_class . '"' : '';
        $tr_class = $_FormDisplayGroup > 0
            ? 'group-field group-field-' . $_FormDisplayGroup
            : '';
        if (isset($opts['setvalue']) && $opts['setvalue'] == ':group') {
            unset($opts['setvalue']);
            $_FormDisplayGroup++;
            $tr_class = 'group-header-field group-header-' . $_FormDisplayGroup;
        }
        if ($option_is_disabled) {
            $tr_class .= ($tr_class ? ' ' : '') . 'disabled-field';
        }
        $tr_class = $tr_class ? ' class="' . $tr_class . '"' : '';

        $htmlOutput = '<tr' . $tr_class . '>';
        $htmlOutput .= '<th>';
        $htmlOutput .= '<label for="' . htmlspecialchars($path) . '">' . htmlspecialchars_decode($name)
            . '</label>';

        if (! empty($opts['doc'])) {
            $htmlOutput .= '<span class="doc">';
            $htmlOutput .= '<a href="' . $opts['doc']
                . '" target="documentation">' . $icons['help'] . '</a>';
            $htmlOutput .= "\n";
            $htmlOutput .= '</span>';
        }

        if ($option_is_disabled) {
            $htmlOutput .= '<span class="disabled-notice" title="';
            $htmlOutput .= __(
                'This setting is disabled, it will not be applied to your configuration.'
            );
            $htmlOutput .= '">' . __('Disabled') . "</span>";
        }

        if (!empty($description)) {
            $htmlOutput .= '<small>' . $description . '</small>';
        }

        $htmlOutput .= '</th>';
        $htmlOutput .= '<td>';

        switch ($type) {
        case 'text':
            $htmlOutput .= '<input type="text" class="all85" ' . $name_id . $field_class
                . ' value="' . htmlspecialchars($value) . '" />';
            break;
        case 'password':
            $htmlOutput .= '<input type="password" class="all85" ' . $name_id . $field_class
                . ' value="' . htmlspecialchars($value) . '" />';
            break;
        case 'short_text':
            // As seen in the reporting server (#15042) we sometimes receive
            // an array here. No clue about its origin nor content, so let's avoid
            // a notice on htmlspecialchars().
            if (! is_array($value)) {
                $htmlOutput .= '<input type="text" size="25" ' . $name_id
                    . $field_class . ' value="' . htmlspecialchars($value)
                    . '" />';
            }
            break;
        case 'number_text':
            $htmlOutput .= '<input type="number" ' . $name_id . $field_class
                . ' value="' . htmlspecialchars($value) . '" />';
            break;
        case 'checkbox':
            $htmlOutput .= '<span' . $field_class . '><input type="checkbox" ' . $name_id
              . ($value ? ' checked="checked"' : '') . ' /></span>';
            break;
        case 'select':
            $htmlOutput .= '<select class="all85" ' . $name_id . $field_class . '>';
            $escape = !(isset($opts['values_escaped']) && $opts['values_escaped']);
            $values_disabled = isset($opts['values_disabled'])
                ? array_flip($opts['values_disabled']) : array();
            foreach ($opts['values'] as $opt_value_key => $opt_value) {
                // set names for boolean values
                if (is_bool($opt_value)) {
                    $opt_value = mb_strtolower(
                        $opt_value ? __('Yes') : __('No')
                    );
                }
                // escape if necessary
                if ($escape) {
                    $display = htmlspecialchars($opt_value);
                    $display_value = htmlspecialchars($opt_value_key);
                } else {
                    $display = $opt_value;
                    $display_value = $opt_value_key;
                }
                // compare with selected value
                // boolean values are cast to integers when used as array keys
                $selected = is_bool($value)
                    ? (int) $value === $opt_value_key
                    : $opt_value_key === $value;
                $htmlOutput .= '<option value="' . $display_value . '"';
                if ($selected) {
                    $htmlOutput .= ' selected="selected"';
                }
                if (isset($values_disabled[$opt_value_key])) {
                    $htmlOutput .= ' disabled="disabled"';
                }
                $htmlOutput .= '>' . $display . '</option>';
            }
            $htmlOutput .= '</select>';
            break;
        case 'list':
            $htmlOutput .= '<textarea cols="35" rows="5" ' . $name_id . $field_class
                . '>' . htmlspecialchars(implode("\n", $value)) . '</textarea>';
            break;
        }
        if (isset($opts['comment']) && $opts['comment']) {
            $class = 'field-comment-mark';
            if (isset($opts['comment_warning']) && $opts['comment_warning']) {
                $class .= ' field-comment-warning';
            }
            $htmlOutput .= '<span class="' . $class . '" title="'
                . htmlspecialchars($opts['comment']) . '">i</span>';
        }
        if ($is_setup_script
            && isset($opts['userprefs_comment'])
            && $opts['userprefs_comment']
        ) {
            $htmlOutput .= '<a class="userprefs-comment" title="'
                . htmlspecialchars($opts['userprefs_comment']) . '">'
                . $icons['tblops'] . '</a>';
        }
        if (isset($opts['setvalue']) && $opts['setvalue']) {
            $htmlOutput .= '<a class="set-value hide" href="#'
                . htmlspecialchars("$path={$opts['setvalue']}") . '" title="'
                . sprintf(__('Set value: %s'), htmlspecialchars($opts['setvalue']))
                . '">' . $icons['edit'] . '</a>';
        }
        if (isset($opts['show_restore_default']) && $opts['show_restore_default']) {
            $htmlOutput .= '<a class="restore-default hide" href="#' . $path . '" title="'
                .  __('Restore default value') . '">' . $icons['reload'] . '</a>';
        }
        // this must match with displayErrors() in scripts/config.js
        if ($has_errors) {
            $htmlOutput .= "\n        <dl class=\"inline_errors\">";
            foreach ($opts['errors'] as $error) {
                $htmlOutput .= '<dd>' . htmlspecialchars($error) . '</dd>';
            }
            $htmlOutput .= '</dl>';
        }
        $htmlOutput .= '</td>';
        if ($is_setup_script && isset($opts['userprefs_allow'])) {
            $htmlOutput .= '<td class="userprefs-allow" title="' .
                __('Allow users to customize this value') . '">';
            $htmlOutput .= '<input type="checkbox" name="' . $path
                . '-userprefs-allow" ';
            if ($opts['userprefs_allow']) {
                $htmlOutput .= 'checked="checked"';
            };
            $htmlOutput .= '/>';
            $htmlOutput .= '</td>';
        } elseif ($is_setup_script) {
            $htmlOutput .= '<td>&nbsp;</td>';
        }
        $htmlOutput .= '</tr>';
        return $htmlOutput;
    }

    /**
     * Display group header
     *
     * @param string $headerText Text of header
     *
     * @return string|void
     */
    public static function displayGroupHeader($headerText)
    {
        global $_FormDisplayGroup;

        $_FormDisplayGroup++;
        if (! $headerText) {
            return null;
        }
        $colspan = $GLOBALS['PMA_Config']->get('is_setup') ? 3 : 2;

        return Template::get('config/form_display/group_header')->render([
            'group' => $_FormDisplayGroup,
            'colspan' => $colspan,
            'header_text' => $headerText,
        ]);
    }

    /**
     * Display group footer
     *
     * @return void
     */
    public static function displayGroupFooter()
    {
        global $_FormDisplayGroup;

        $_FormDisplayGroup--;
    }

    /**
     * Displays bottom part of a fieldset
     *
     * @param bool $showButtons Whether show submit and reset button
     *
     * @return string
     */
    public static function displayFieldsetBottom($showButtons = true)
    {
        return Template::get('config/form_display/fieldset_bottom')->render([
            'show_buttons' => $showButtons,
            'is_setup' => $GLOBALS['PMA_Config']->get('is_setup'),
        ]);
    }

    /**
     * Closes form tabs
     *
     * @return string
     */
    public static function displayTabsBottom()
    {
        return Template::get('config/form_display/tabs_bottom')->render();
    }

    /**
     * Displays bottom part of the form
     *
     * @return string
     */
    public static function displayFormBottom()
    {
        return Template::get('config/form_display/form_bottom')->render();
    }

    /**
     * Appends JS validation code to $js_array
     *
     * @param string       $field_id   ID of field to validate
     * @param string|array $validators validators callback
     * @param array        &$js_array  will be updated with javascript code
     *
     * @return void
     */
    public static function addJsValidate($field_id, $validators, array &$js_array)
    {
        foreach ((array)$validators as $validator) {
            $validator = (array)$validator;
            $v_name = array_shift($validator);
            $v_name = "PMA_" . $v_name;
            $v_args = array();
            foreach ($validator as $arg) {
                $v_args[] = Sanitize::escapeJsString($arg);
            }
            $v_args = $v_args ? ", ['" . implode("', '", $v_args) . "']" : '';
            $js_array[] = "validateField('$field_id', '$v_name', true$v_args)";
        }
    }

    /**
     * Displays JavaScript code
     *
     * @param array $js_array lines of javascript code
     *
     * @return string
     */
    public static function displayJavascript(array $js_array)
    {
        if (empty($js_array)) {
            return null;
        }

        return Template::get('javascript/display')->render(
            array('js_array' => $js_array,)
        );
    }

    /**
     * Displays error list
     *
     * @param string $name      Name of item with errors
     * @param array  $errorList List of errors to show
     *
     * @return string HTML for errors
     */
    public static function displayErrors($name, array $errorList)
    {
        return Template::get('config/form_display/errors')->render([
            'name' => $name,
            'error_list' => $errorList,
        ]);
    }
}