クラス yii\helpers\Html

                public static function a($text, $url = null, $options = [])
{
    if ($url !== null) {
        $options['href'] = Url::to($url);
    }
    return static::tag('a', $text, $options);
}

            

                protected static function activeBooleanInput($type, $model, $attribute, $options = [])
{
    $name = isset($options['name']) ? $options['name'] : static::getInputName($model, $attribute);
    $value = static::getAttributeValue($model, $attribute);
    if (!array_key_exists('value', $options)) {
        $options['value'] = '1';
    }
    if (!array_key_exists('uncheck', $options)) {
        $options['uncheck'] = '0';
    } elseif ($options['uncheck'] === false) {
        unset($options['uncheck']);
    }
    if (!array_key_exists('label', $options)) {
        $options['label'] = static::encode($model->getAttributeLabel(static::getAttributeName($attribute)));
    } elseif ($options['label'] === false) {
        unset($options['label']);
    }
    $checked = "$value" === "{$options['value']}";
    if (!array_key_exists('id', $options)) {
        $options['id'] = static::getInputId($model, $attribute);
    }
    return static::$type($name, $checked, $options);
}

            

                public static function activeCheckbox($model, $attribute, $options = [])
{
    return static::activeBooleanInput('checkbox', $model, $attribute, $options);
}

            

                public static function activeCheckboxList($model, $attribute, $items, $options = [])
{
    return static::activeListInput('checkboxList', $model, $attribute, $items, $options);
}

            

                public static function activeDropDownList($model, $attribute, $items, $options = [])
{
    if (empty($options['multiple'])) {
        return static::activeListInput('dropDownList', $model, $attribute, $items, $options);
    }
    return static::activeListBox($model, $attribute, $items, $options);
}

            

                public static function activeFileInput($model, $attribute, $options = [])
{
    $hiddenOptions = ['id' => null, 'value' => ''];
    if (isset($options['name'])) {
        $hiddenOptions['name'] = $options['name'];
    }
    // make sure disabled input is not sending any value
    if (!empty($options['disabled'])) {
        $hiddenOptions['disabled'] = $options['disabled'];
    }
    $hiddenOptions = ArrayHelper::merge($hiddenOptions, ArrayHelper::remove($options, 'hiddenOptions', []));
    // Add a hidden field so that if a model only has a file field, we can
    // still use isset($_POST[$modelClass]) to detect if the input is submitted.
    // The hidden input will be assigned its own set of html options via `$hiddenOptions`.
    // This provides the possibility to interact with the hidden field via client script.
    // Note: For file-field-only model with `disabled` option set to `true` input submitting detection won't work.
    return static::activeHiddenInput($model, $attribute, $hiddenOptions)
        . static::activeInput('file', $model, $attribute, $options);
}

            

                public static function activeHiddenInput($model, $attribute, $options = [])
{
    return static::activeInput('hidden', $model, $attribute, $options);
}

            

                public static function activeHint($model, $attribute, $options = [])
{
    $attribute = static::getAttributeName($attribute);
    $hint = isset($options['hint']) ? $options['hint'] : $model->getAttributeHint($attribute);
    if (empty($hint)) {
        return '';
    }
    $tag = ArrayHelper::remove($options, 'tag', 'div');
    unset($options['hint']);
    return static::tag($tag, $hint, $options);
}

            

                public static function activeInput($type, $model, $attribute, $options = [])
{
    $name = isset($options['name']) ? $options['name'] : static::getInputName($model, $attribute);
    $value = isset($options['value']) ? $options['value'] : static::getAttributeValue($model, $attribute);
    if (!array_key_exists('id', $options)) {
        $options['id'] = static::getInputId($model, $attribute);
    }
    static::setActivePlaceholder($model, $attribute, $options);
    self::normalizeMaxLength($model, $attribute, $options);
    return static::input($type, $name, $value, $options);
}

            

                public static function activeLabel($model, $attribute, $options = [])
{
    $for = ArrayHelper::remove($options, 'for', static::getInputId($model, $attribute));
    $attribute = static::getAttributeName($attribute);
    $label = ArrayHelper::remove($options, 'label', static::encode($model->getAttributeLabel($attribute)));
    return static::label($label, $for, $options);
}

            

                public static function activeListBox($model, $attribute, $items, $options = [])
{
    return static::activeListInput('listBox', $model, $attribute, $items, $options);
}

            

                protected static function activeListInput($type, $model, $attribute, $items, $options = [])
{
    $name = ArrayHelper::remove($options, 'name', static::getInputName($model, $attribute));
    $selection = ArrayHelper::remove($options, 'value', static::getAttributeValue($model, $attribute));
    if (!array_key_exists('unselect', $options)) {
        $options['unselect'] = '';
    }
    if (!array_key_exists('id', $options)) {
        $options['id'] = static::getInputId($model, $attribute);
    }
    return static::$type($name, $selection, $items, $options);
}

            

                public static function activePasswordInput($model, $attribute, $options = [])
{
    return static::activeInput('password', $model, $attribute, $options);
}

            

                public static function activeRadio($model, $attribute, $options = [])
{
    return static::activeBooleanInput('radio', $model, $attribute, $options);
}

            

                public static function activeRadioList($model, $attribute, $items, $options = [])
{
    return static::activeListInput('radioList', $model, $attribute, $items, $options);
}

            

                public static function activeTextInput($model, $attribute, $options = [])
{
    return static::activeInput('text', $model, $attribute, $options);
}

            

                public static function activeTextarea($model, $attribute, $options = [])
{
    $name = isset($options['name']) ? $options['name'] : static::getInputName($model, $attribute);
    if (isset($options['value'])) {
        $value = $options['value'];
        unset($options['value']);
    } else {
        $value = static::getAttributeValue($model, $attribute);
    }
    if (!array_key_exists('id', $options)) {
        $options['id'] = static::getInputId($model, $attribute);
    }
    self::normalizeMaxLength($model, $attribute, $options);
    static::setActivePlaceholder($model, $attribute, $options);
    return static::textarea($name, $value, $options);
}

            

                public static function addCssClass(&$options, $class)
{
    if (isset($options['class'])) {
        if (is_array($options['class'])) {
            $options['class'] = self::mergeCssClasses($options['class'], (array) $class);
        } else {
            $classes = preg_split('/\s+/', $options['class'], -1, PREG_SPLIT_NO_EMPTY);
            $options['class'] = implode(' ', self::mergeCssClasses($classes, (array) $class));
        }
    } else {
        $options['class'] = $class;
    }
}

            

                public static function addCssStyle(&$options, $style, $overwrite = true)
{
    if (!empty($options['style'])) {
        $oldStyle = is_array($options['style']) ? $options['style'] : static::cssStyleToArray($options['style']);
        $newStyle = is_array($style) ? $style : static::cssStyleToArray($style);
        if (!$overwrite) {
            foreach ($newStyle as $property => $value) {
                if (isset($oldStyle[$property])) {
                    unset($newStyle[$property]);
                }
            }
        }
        $style = array_merge($oldStyle, $newStyle);
    }
    $options['style'] = is_array($style) ? static::cssStyleFromArray($style) : $style;
}

            

                public static function beginForm($action = '', $method = 'post', $options = [])
{
    $action = Url::to($action);
    $hiddenInputs = [];
    $request = Yii::$app->getRequest();
    if ($request instanceof Request) {
        if (strcasecmp($method, 'get') && strcasecmp($method, 'post')) {
            // simulate PUT, DELETE, etc. via POST
            $hiddenInputs[] = static::hiddenInput($request->methodParam, $method);
            $method = 'post';
        }
        $csrf = ArrayHelper::remove($options, 'csrf', true);
        if ($csrf && $request->enableCsrfValidation && strcasecmp($method, 'post') === 0) {
            $hiddenInputs[] = static::hiddenInput($request->csrfParam, $request->getCsrfToken());
        }
    }
    if (!strcasecmp($method, 'get') && ($pos = strpos($action, '?')) !== false) {
        // query parameters in the action are ignored for GET method
        // we use hidden fields to add them back
        foreach (explode('&', substr($action, $pos + 1)) as $pair) {
            if (($pos1 = strpos($pair, '=')) !== false) {
                $hiddenInputs[] = static::hiddenInput(
                    urldecode(substr($pair, 0, $pos1)),
                    urldecode(substr($pair, $pos1 + 1))
                );
            } else {
                $hiddenInputs[] = static::hiddenInput(urldecode($pair), '');
            }
        }
        $action = substr($action, 0, $pos);
    }
    $options['action'] = $action;
    $options['method'] = $method;
    $form = static::beginTag('form', $options);
    if (!empty($hiddenInputs)) {
        $form .= "\n" . implode("\n", $hiddenInputs);
    }
    return $form;
}

            

                public static function beginTag($name, $options = [])
{
    if ($name === null || $name === false) {
        return '';
    }
    return "<$name" . static::renderTagAttributes($options) . '>';
}

            

                protected static function booleanInput($type, $name, $checked = false, $options = [])
{
    // 'checked' option has priority over $checked argument
    if (!isset($options['checked'])) {
        $options['checked'] = (bool) $checked;
    }
    $value = array_key_exists('value', $options) ? $options['value'] : '1';
    if (isset($options['uncheck'])) {
        // add a hidden field so that if the checkbox is not selected, it still submits a value
        $hiddenOptions = [];
        if (isset($options['form'])) {
            $hiddenOptions['form'] = $options['form'];
        }
        // make sure disabled input is not sending any value
        if (!empty($options['disabled'])) {
            $hiddenOptions['disabled'] = $options['disabled'];
        }
        $hidden = static::hiddenInput($name, $options['uncheck'], $hiddenOptions);
        unset($options['uncheck']);
    } else {
        $hidden = '';
    }
    if (isset($options['label'])) {
        $label = $options['label'];
        $labelOptions = isset($options['labelOptions']) ? $options['labelOptions'] : [];
        unset($options['label'], $options['labelOptions']);
        $content = static::label(static::input($type, $name, $value, $options) . ' ' . $label, null, $labelOptions);
        return $hidden . $content;
    }
    return $hidden . static::input($type, $name, $value, $options);
}

            

                public static function button($content = 'Button', $options = [])
{
    if (!isset($options['type'])) {
        $options['type'] = 'button';
    }
    return static::tag('button', $content, $options);
}

            

                public static function buttonInput($label = 'Button', $options = [])
{
    $options['type'] = 'button';
    $options['value'] = $label;
    return static::tag('input', '', $options);
}

            

                public static function checkbox($name, $checked = false, $options = [])
{
    return static::booleanInput('checkbox', $name, $checked, $options);
}

            

                public static function checkboxList($name, $selection = null, $items = [], $options = [])
{
    if (substr($name, -2) !== '[]') {
        $name .= '[]';
    }
    if (ArrayHelper::isTraversable($selection)) {
        $selection = array_map('strval', ArrayHelper::toArray($selection));
    }
    $formatter = ArrayHelper::remove($options, 'item');
    $itemOptions = ArrayHelper::remove($options, 'itemOptions', []);
    $encode = ArrayHelper::remove($options, 'encode', true);
    $separator = ArrayHelper::remove($options, 'separator', "\n");
    $tag = ArrayHelper::remove($options, 'tag', 'div');
    $strict = ArrayHelper::remove($options, 'strict', false);
    $lines = [];
    $index = 0;
    foreach ($items as $value => $label) {
        $checked = $selection !== null &&
            (!ArrayHelper::isTraversable($selection) && !strcmp($value, $selection)
                || ArrayHelper::isTraversable($selection) && ArrayHelper::isIn((string)$value, $selection, $strict));
        if ($formatter !== null) {
            $lines[] = call_user_func($formatter, $index, $label, $name, $checked, $value);
        } else {
            $lines[] = static::checkbox($name, $checked, array_merge([
                'value' => $value,
                'label' => $encode ? static::encode($label) : $label,
            ], $itemOptions));
        }
        $index++;
    }
    if (isset($options['unselect'])) {
        // add a hidden field so that if the list box has no option being selected, it still submits a value
        $name2 = substr($name, -2) === '[]' ? substr($name, 0, -2) : $name;
        $hiddenOptions = [];
        // make sure disabled input is not sending any value
        if (!empty($options['disabled'])) {
            $hiddenOptions['disabled'] = $options['disabled'];
        }
        $hidden = static::hiddenInput($name2, $options['unselect'], $hiddenOptions);
        unset($options['unselect'], $options['disabled']);
    } else {
        $hidden = '';
    }
    $visibleContent = implode($separator, $lines);
    if ($tag === false) {
        return $hidden . $visibleContent;
    }
    return $hidden . static::tag($tag, $visibleContent, $options);
}

            

                public static function csrfMetaTags()
{
    $request = Yii::$app->getRequest();
    if ($request instanceof Request && $request->enableCsrfValidation) {
        return static::tag('meta', '', ['name' => 'csrf-param', 'content' => $request->csrfParam]) . "\n"
            . static::tag('meta', '', ['name' => 'csrf-token', 'content' => $request->getCsrfToken()]) . "\n";
    }
    return '';
}

            

                public static function cssFile($url, $options = [])
{
    if (!isset($options['rel'])) {
        $options['rel'] = 'stylesheet';
    }
    $options['href'] = Url::to($url);
    if (isset($options['condition'])) {
        $condition = $options['condition'];
        unset($options['condition']);
        return self::wrapIntoCondition(static::tag('link', '', $options), $condition);
    } elseif (isset($options['noscript']) && $options['noscript'] === true) {
        unset($options['noscript']);
        return '<noscript>' . static::tag('link', '', $options) . '</noscript>';
    }
    return static::tag('link', '', $options);
}

            

                public static function cssStyleFromArray(array $style)
{
    $result = '';
    foreach ($style as $name => $value) {
        $result .= "$name: $value; ";
    }
    // return null if empty to avoid rendering the "style" attribute
    return $result === '' ? null : rtrim($result);
}

            

                public static function cssStyleToArray($style)
{
    $result = [];
    foreach (explode(';', $style) as $property) {
        $property = explode(':', $property);
        if (count($property) > 1) {
            $result[trim($property[0])] = trim($property[1]);
        }
    }
    return $result;
}

            

                public static function decode($content)
{
    return htmlspecialchars_decode($content, ENT_QUOTES);
}

            

                public static function dropDownList($name, $selection = null, $items = [], $options = [])
{
    if (!empty($options['multiple'])) {
        return static::listBox($name, $selection, $items, $options);
    }
    $options['name'] = $name;
    unset($options['unselect']);
    $selectOptions = static::renderSelectOptions($selection, $items, $options);
    return static::tag('select', "\n" . $selectOptions . "\n", $options);
}

            

                public static function encode($content, $doubleEncode = true)
{
    return htmlspecialchars((string)$content, ENT_QUOTES | ENT_SUBSTITUTE, Yii::$app ? Yii::$app->charset : 'UTF-8', $doubleEncode);
}

            

                public static function endForm()
{
    return '</form>';
}

            

                public static function endTag($name)
{
    if ($name === null || $name === false) {
        return '';
    }
    return "</$name>";
}

            

                public static function error($model, $attribute, $options = [])
{
    $attribute = static::getAttributeName($attribute);
    $errorSource = ArrayHelper::remove($options, 'errorSource');
    if ($errorSource !== null) {
        $error = call_user_func($errorSource, $model, $attribute);
    } else {
        $error = $model->getFirstError($attribute);
    }
    $tag = ArrayHelper::remove($options, 'tag', 'div');
    $encode = ArrayHelper::remove($options, 'encode', true);
    return Html::tag($tag, $encode ? Html::encode($error) : $error, $options);
}

            

                public static function errorSummary($models, $options = [])
{
    $header = isset($options['header']) ? $options['header'] : '<p>' . Yii::t('yii', 'Please fix the following errors:') . '</p>';
    $footer = ArrayHelper::remove($options, 'footer', '');
    $encode = ArrayHelper::remove($options, 'encode', true);
    $showAllErrors = ArrayHelper::remove($options, 'showAllErrors', false);
    $emptyClass = ArrayHelper::remove($options, 'emptyClass', null);
    unset($options['header']);
    $lines = self::collectErrors($models, $encode, $showAllErrors);
    if (empty($lines)) {
        // still render the placeholder for client-side validation use
        $content = '<ul></ul>';
        if ($emptyClass !== null) {
            $options['class'] = $emptyClass;
        } else {
            $options['style'] = isset($options['style']) ? rtrim($options['style'], ';') . '; display:none' : 'display:none';
        }
    } else {
        $content = '<ul><li>' . implode("</li>\n<li>", $lines) . '</li></ul>';
    }
    return Html::tag('div', $header . $content . $footer, $options);
}

            

                public static function escapeJsRegularExpression($regexp)
{
    $pattern = preg_replace('/\\\\x\{?([0-9a-fA-F]+)\}?/', '\u$1', $regexp);
    $deliminator = substr($pattern, 0, 1);
    $pos = strrpos($pattern, $deliminator, 1);
    $flag = substr($pattern, $pos + 1);
    if ($deliminator !== '/') {
        $pattern = '/' . str_replace('/', '\\/', substr($pattern, 1, $pos - 1)) . '/';
    } else {
        $pattern = substr($pattern, 0, $pos + 1);
    }
    if (!empty($flag)) {
        $pattern .= preg_replace('/[^igmu]/', '', $flag);
    }
    return $pattern;
}

            

                public static function fileInput($name, $value = null, $options = [])
{
    return static::input('file', $name, $value, $options);
}

            

                public static function getAttributeName($attribute)
{
    if (preg_match(static::$attributeRegex, $attribute, $matches)) {
        return $matches[2];
    }
    throw new InvalidArgumentException('Attribute name must contain word characters only.');
}

            

                public static function getAttributeValue($model, $attribute)
{
    if (!preg_match(static::$attributeRegex, $attribute, $matches)) {
        throw new InvalidArgumentException('Attribute name must contain word characters only.');
    }
    $attribute = $matches[2];
    $value = $model->$attribute;
    if ($matches[3] !== '') {
        foreach (explode('][', trim($matches[3], '[]')) as $id) {
            if ((is_array($value) || $value instanceof \ArrayAccess) && isset($value[$id])) {
                $value = $value[$id];
            } else {
                return null;
            }
        }
    }
    // https://github.com/yiisoft/yii2/issues/1457
    if (is_array($value)) {
        foreach ($value as $i => $v) {
            if ($v instanceof ActiveRecordInterface) {
                $v = $v->getPrimaryKey(false);
                $value[$i] = is_array($v) ? json_encode($v) : $v;
            }
        }
    } elseif ($value instanceof ActiveRecordInterface) {
        $value = $value->getPrimaryKey(false);
        return is_array($value) ? json_encode($value) : $value;
    }
    return $value;
}

            

                public static function getInputId($model, $attribute)
{
    $name = static::getInputName($model, $attribute);
    return static::getInputIdByName($name);
}

            

                public static function getInputIdByName($name)
{
    $charset = Yii::$app ? Yii::$app->charset : 'UTF-8';
    $name = mb_strtolower($name, $charset);
    return str_replace(['[]', '][', '[', ']', ' ', '.', '--'], ['', '-', '-', '', '-', '-', '-'], $name);
}

            

                public static function getInputName($model, $attribute)
{
    $formName = $model->formName();
    if (!preg_match(static::$attributeRegex, $attribute, $matches)) {
        throw new InvalidArgumentException('Attribute name must contain word characters only.');
    }
    $prefix = $matches[1];
    $attribute = $matches[2];
    $suffix = $matches[3];
    if ($formName === '' && $prefix === '') {
        return $attribute . $suffix;
    } elseif ($formName !== '') {
        return $formName . $prefix . "[$attribute]" . $suffix;
    }
    throw new InvalidArgumentException(get_class($model) . '::formName() cannot be empty for tabular inputs.');
}

            

                public static function hiddenInput($name, $value = null, $options = [])
{
    return static::input('hidden', $name, $value, $options);
}

            

                public static function img($src, $options = [])
{
    $options['src'] = Url::to($src);
    if (isset($options['srcset']) && is_array($options['srcset'])) {
        $srcset = [];
        foreach ($options['srcset'] as $descriptor => $url) {
            $srcset[] = Url::to($url) . ' ' . $descriptor;
        }
        $options['srcset'] = implode(',', $srcset);
    }
    if (!isset($options['alt'])) {
        $options['alt'] = '';
    }
    return static::tag('img', '', $options);
}

            

                public static function input($type, $name = null, $value = null, $options = [])
{
    if (!isset($options['type'])) {
        $options['type'] = $type;
    }
    $options['name'] = $name;
    $options['value'] = $value === null ? null : (string) $value;
    return static::tag('input', '', $options);
}

            

                public static function jsFile($url, $options = [])
{
    $options['src'] = Url::to($url);
    if (isset($options['condition'])) {
        $condition = $options['condition'];
        unset($options['condition']);
        return self::wrapIntoCondition(static::tag('script', '', $options), $condition);
    }
    return static::tag('script', '', $options);
}

            

                public static function label($content, $for = null, $options = [])
{
    $options['for'] = $for;
    return static::tag('label', $content, $options);
}

            

                public static function listBox($name, $selection = null, $items = [], $options = [])
{
    if (!array_key_exists('size', $options)) {
        $options['size'] = 4;
    }
    if (!empty($options['multiple']) && !empty($name) && substr_compare($name, '[]', -2, 2)) {
        $name .= '[]';
    }
    $options['name'] = $name;
    if (isset($options['unselect'])) {
        // add a hidden field so that if the list box has no option being selected, it still submits a value
        if (!empty($name) && substr_compare($name, '[]', -2, 2) === 0) {
            $name = substr($name, 0, -2);
        }
        $hiddenOptions = [];
        // make sure disabled input is not sending any value
        if (!empty($options['disabled'])) {
            $hiddenOptions['disabled'] = $options['disabled'];
        }
        $hidden = static::hiddenInput($name, $options['unselect'], $hiddenOptions);
        unset($options['unselect']);
    } else {
        $hidden = '';
    }
    $selectOptions = static::renderSelectOptions($selection, $items, $options);
    return $hidden . static::tag('select', "\n" . $selectOptions . "\n", $options);
}

            

                public static function mailto($text, $email = null, $options = [])
{
    $options['href'] = 'mailto:' . ($email === null ? $text : $email);
    return static::tag('a', $text, $options);
}

            

                public static function ol($items, $options = [])
{
    $options['tag'] = 'ol';
    return static::ul($items, $options);
}

            

                public static function passwordInput($name, $value = null, $options = [])
{
    return static::input('password', $name, $value, $options);
}

            

                public static function radio($name, $checked = false, $options = [])
{
    return static::booleanInput('radio', $name, $checked, $options);
}

            

                public static function radioList($name, $selection = null, $items = [], $options = [])
{
    if (ArrayHelper::isTraversable($selection)) {
        $selection = array_map('strval', ArrayHelper::toArray($selection));
    }
    $formatter = ArrayHelper::remove($options, 'item');
    $itemOptions = ArrayHelper::remove($options, 'itemOptions', []);
    $encode = ArrayHelper::remove($options, 'encode', true);
    $separator = ArrayHelper::remove($options, 'separator', "\n");
    $tag = ArrayHelper::remove($options, 'tag', 'div');
    $strict = ArrayHelper::remove($options, 'strict', false);
    $hidden = '';
    if (isset($options['unselect'])) {
        // add a hidden field so that if the list box has no option being selected, it still submits a value
        $hiddenOptions = [];
        // make sure disabled input is not sending any value
        if (!empty($options['disabled'])) {
            $hiddenOptions['disabled'] = $options['disabled'];
        }
        $hidden =  static::hiddenInput($name, $options['unselect'], $hiddenOptions);
        unset($options['unselect'], $options['disabled']);
    }
    $lines = [];
    $index = 0;
    foreach ($items as $value => $label) {
        $checked = $selection !== null &&
            (!ArrayHelper::isTraversable($selection) && !strcmp($value, $selection)
                || ArrayHelper::isTraversable($selection) && ArrayHelper::isIn((string)$value, $selection, $strict));
        if ($formatter !== null) {
            $lines[] = call_user_func($formatter, $index, $label, $name, $checked, $value);
        } else {
            $lines[] = static::radio($name, $checked, array_merge([
                'value' => $value,
                'label' => $encode ? static::encode($label) : $label,
            ], $itemOptions));
        }
        $index++;
    }
    $visibleContent = implode($separator, $lines);
    if ($tag === false) {
        return $hidden . $visibleContent;
    }
    return $hidden . static::tag($tag, $visibleContent, $options);
}

            

                public static function removeCssClass(&$options, $class)
{
    if (isset($options['class'])) {
        if (is_array($options['class'])) {
            $classes = array_diff($options['class'], (array) $class);
            if (empty($classes)) {
                unset($options['class']);
            } else {
                $options['class'] = $classes;
            }
        } else {
            $classes = preg_split('/\s+/', $options['class'], -1, PREG_SPLIT_NO_EMPTY);
            $classes = array_diff($classes, (array) $class);
            if (empty($classes)) {
                unset($options['class']);
            } else {
                $options['class'] = implode(' ', $classes);
            }
        }
    }
}

            

                public static function removeCssStyle(&$options, $properties)
{
    if (!empty($options['style'])) {
        $style = is_array($options['style']) ? $options['style'] : static::cssStyleToArray($options['style']);
        foreach ((array) $properties as $property) {
            unset($style[$property]);
        }
        $options['style'] = static::cssStyleFromArray($style);
    }
}

            

                public static function renderSelectOptions($selection, $items, &$tagOptions = [])
{
    if (ArrayHelper::isTraversable($selection)) {
        $normalizedSelection = [];
        foreach (ArrayHelper::toArray($selection) as $selectionItem) {
            if (is_bool($selectionItem)) {
                $normalizedSelection[] = $selectionItem ? '1' : '0';
            } else {
                $normalizedSelection[] = (string)$selectionItem;
            }
        }
        $selection = $normalizedSelection;
    } elseif (is_bool($selection)) {
        $selection = $selection ? '1' : '0';
    }
    $lines = [];
    $encodeSpaces = ArrayHelper::remove($tagOptions, 'encodeSpaces', false);
    $encode = ArrayHelper::remove($tagOptions, 'encode', true);
    $strict = ArrayHelper::remove($tagOptions, 'strict', false);
    if (isset($tagOptions['prompt'])) {
        $promptOptions = ['value' => ''];
        if (is_string($tagOptions['prompt'])) {
            $promptText = $tagOptions['prompt'];
        } else {
            $promptText = $tagOptions['prompt']['text'];
            $promptOptions = array_merge($promptOptions, $tagOptions['prompt']['options']);
        }
        $promptText = $encode ? static::encode($promptText) : $promptText;
        if ($encodeSpaces) {
            $promptText = str_replace(' ', ' ', $promptText);
        }
        $lines[] = static::tag('option', $promptText, $promptOptions);
    }
    $options = isset($tagOptions['options']) ? $tagOptions['options'] : [];
    $groups = isset($tagOptions['groups']) ? $tagOptions['groups'] : [];
    unset($tagOptions['prompt'], $tagOptions['options'], $tagOptions['groups']);
    $options['encodeSpaces'] = ArrayHelper::getValue($options, 'encodeSpaces', $encodeSpaces);
    $options['encode'] = ArrayHelper::getValue($options, 'encode', $encode);
    foreach ($items as $key => $value) {
        if (is_array($value)) {
            $groupAttrs = isset($groups[$key]) ? $groups[$key] : [];
            if (!isset($groupAttrs['label'])) {
                $groupAttrs['label'] = $key;
            }
            $attrs = ['options' => $options, 'groups' => $groups, 'encodeSpaces' => $encodeSpaces, 'encode' => $encode, 'strict' => $strict];
            $content = static::renderSelectOptions($selection, $value, $attrs);
            $lines[] = static::tag('optgroup', "\n" . $content . "\n", $groupAttrs);
        } else {
            $attrs = isset($options[$key]) ? $options[$key] : [];
            $attrs['value'] = (string) $key;
            if (!array_key_exists('selected', $attrs)) {
                $selected = false;
                if ($selection !== null) {
                    if (ArrayHelper::isTraversable($selection)) {
                        $selected = ArrayHelper::isIn((string)$key, $selection, $strict);
                    } elseif ($key === '' || $selection === '') {
                        $selected = $selection === $key;
                    } elseif ($strict) {
                        $selected = !strcmp((string)$key, (string)$selection);
                    } else {
                        $selected = $selection == $key;
                    }
                }
                $attrs['selected'] = $selected;
            }
            $text = $encode ? static::encode($value) : $value;
            if ($encodeSpaces) {
                $text = str_replace(' ', ' ', $text);
            }
            $lines[] = static::tag('option', $text, $attrs);
        }
    }
    return implode("\n", $lines);
}

            

                public static function renderTagAttributes($attributes)
{
    if (count($attributes) > 1) {
        $sorted = [];
        foreach (static::$attributeOrder as $name) {
            if (isset($attributes[$name])) {
                $sorted[$name] = $attributes[$name];
            }
        }
        $attributes = array_merge($sorted, $attributes);
    }
    $html = '';
    foreach ($attributes as $name => $value) {
        if (is_bool($value)) {
            if ($value) {
                $html .= " $name";
            }
        } elseif (is_array($value)) {
            if (in_array($name, static::$dataAttributes)) {
                foreach ($value as $n => $v) {
                    if (is_array($v)) {
                        $html .= " $name-$n='" . Json::htmlEncode($v) . "'";
                    } elseif (is_bool($v)) {
                        if ($v) {
                            $html .= " $name-$n";
                        }
                    } elseif ($v !== null) {
                        $html .= " $name-$n=\"" . static::encode($v) . '"';
                    }
                }
            } elseif ($name === 'class') {
                if (empty($value)) {
                    continue;
                }
                if (static::$normalizeClassAttribute === true && count($value) > 1) {
                    // removes duplicate classes
                    $value = explode(' ', implode(' ', $value));
                    $value = array_unique($value);
                }
                $html .= " $name=\"" . static::encode(implode(' ', array_filter($value))) . '"';
            } elseif ($name === 'style') {
                if (empty($value)) {
                    continue;
                }
                $html .= " $name=\"" . static::encode(static::cssStyleFromArray($value)) . '"';
            } else {
                $html .= " $name='" . Json::htmlEncode($value) . "'";
            }
        } elseif ($value !== null) {
            $html .= " $name=\"" . static::encode($value) . '"';
        }
    }
    return $html;
}

            

                public static function resetButton($content = 'Reset', $options = [])
{
    $options['type'] = 'reset';
    return static::button($content, $options);
}

            

                public static function resetInput($label = 'Reset', $options = [])
{
    $options['type'] = 'reset';
    $options['value'] = $label;
    return static::tag('input', '', $options);
}

            

                public static function script($content, $options = [])
{
    return static::tag('script', $content, $options);
}

            

                protected static function setActivePlaceholder($model, $attribute, &$options = [])
{
    if (isset($options['placeholder']) && $options['placeholder'] === true) {
        $attribute = static::getAttributeName($attribute);
        $options['placeholder'] = $model->getAttributeLabel($attribute);
    }
}

            

                public static function style($content, $options = [])
{
    return static::tag('style', $content, $options);
}

            

                public static function submitButton($content = 'Submit', $options = [])
{
    $options['type'] = 'submit';
    return static::button($content, $options);
}

            

                public static function submitInput($label = 'Submit', $options = [])
{
    $options['type'] = 'submit';
    $options['value'] = $label;
    return static::tag('input', '', $options);
}

            

                public static function tag($name, $content = '', $options = [])
{
    if ($name === null || $name === false) {
        return $content;
    }
    $html = "<$name" . static::renderTagAttributes($options) . '>';
    return isset(static::$voidElements[strtolower($name)]) ? $html : "$html$content</$name>";
}

            

                public static function textInput($name, $value = null, $options = [])
{
    return static::input('text', $name, $value, $options);
}

            

                public static function textarea($name, $value = '', $options = [])
{
    $options['name'] = $name;
    $doubleEncode = ArrayHelper::remove($options, 'doubleEncode', true);
    return static::tag('textarea', static::encode($value, $doubleEncode), $options);
}

            

                public static function ul($items, $options = [])
{
    $tag = ArrayHelper::remove($options, 'tag', 'ul');
    $encode = ArrayHelper::remove($options, 'encode', true);
    $formatter = ArrayHelper::remove($options, 'item');
    $separator = ArrayHelper::remove($options, 'separator', "\n");
    $itemOptions = ArrayHelper::remove($options, 'itemOptions', []);
    if (empty($items)) {
        return static::tag($tag, '', $options);
    }
    $results = [];
    foreach ($items as $index => $item) {
        if ($formatter !== null) {
            $results[] = call_user_func($formatter, $item, $index);
        } else {
            $results[] = static::tag('li', $encode ? static::encode($item) : $item, $itemOptions);
        }
    }
    return static::tag(
        $tag,
        $separator . implode($separator, $results) . $separator,
        $options
    );
}