<?php

class wpWidgetFormRichText extends sfWidgetFormTextarea {
    /**
     *
     * @param array $options An array of options
     * @param array $attributes An array of default HTML attributes
     * @see sfWidgetForm
     */
    protected function configure($options = array(), $attributes = array()) {
        $this->addOption('editor', 'tinymce');
        $this->addOption('tinymce_options', '');
        $this->addOption('tinymce_gzip', false);
        $this->addOption('css', false);
        if (isset($attributes['cols'])) {
            $this->addOption('cols', $attributes['cols']);
        }
        if (isset($attributes['rows'])) {
            $this->addOption('rows', $attributes['rows']);
        }

        parent::configure($options, $attributes);
    }

    /**
     *
     * @param string $name The element name
     * @param string $value The value displayed in this widget
     * @param array $attributes An array of HTML attributes to be merged with the default HTML attributes
     * @param array $errors An array of errors for the field
     * @return string An HTML tag string
     * @see sfWidgetForm
     */
    public function render($name, $value = null, $attributes = array(), $errors = array()) {
        $editorClass = 'sfRichTextEditor' . $this->toCanonicalCase($this->getOption('editor'));
        if (!class_exists($editorClass)) {
            throw new sfConfigurationException(sprintf('The rich text editor "%s" does not exist.', $editorClass));
        }

        $editor = new $editorClass();
        if (!in_array('sfRichTextEditor', class_parents($editor))) {
            throw new sfConfigurationException(sprintf('The editor "%s" must extend sfRichTextEditor.', $editor));
        }

        $attributes = array_merge($attributes, $this->getOptions());
        $editor->initialize($name, $value, $attributes);
        return $editor->toHTML();
    }

    /**
     * Converts a lower-case editor name to its canonical case
     *
     * @param string $editor
     * @return string
     */
    private function toCanonicalCase($editor) {
        switch ($editor) {
            case 'tinymce':
                return 'TinyMCE';
            case 'fck':
                return 'FCK';
        }
    }
}