getSettings();
if (!isset($settings['plugins']['stylescombo']['styles'])) {
return $config;
}
$styles = $settings['plugins']['stylescombo']['styles'];
$config['stylesSet'] = $this->generateStylesSetSetting($styles);
return $config;
}
/**
* {@inheritdoc}
*/
public function getButtons() {
return [
'Styles' => [
'label' => $this->t('Font style'),
'image_alternative' => [
'#type' => 'inline_template',
'#template' => '{{ styles_text }}',
'#context' => [
'styles_text' => $this->t('Styles'),
],
],
],
];
}
/**
* {@inheritdoc}
*/
public function settingsForm(array $form, FormStateInterface $form_state, Editor $editor) {
// Defaults.
$config = ['styles' => ''];
$settings = $editor->getSettings();
if (isset($settings['plugins']['stylescombo'])) {
$config = $settings['plugins']['stylescombo'];
}
$form['styles'] = [
'#title' => $this->t('Styles'),
'#title_display' => 'invisible',
'#type' => 'textarea',
'#default_value' => $config['styles'],
'#description' => $this->t('A list of classes that will be provided in the "Styles" dropdown. Enter one or more classes on each line in the format: element.classA.classB|Label. Example: h1.title|Title. Advanced example: h1.fancy.title|Fancy title.
These styles should be available in your theme\'s CSS file.'),
'#attached' => [
'library' => ['ckeditor/drupal.ckeditor.stylescombo.admin'],
],
'#element_validate' => [
[$this, 'validateStylesValue'],
],
];
return $form;
}
/**
* #element_validate handler for the "styles" element in settingsForm().
*/
public function validateStylesValue(array $element, FormStateInterface $form_state) {
$styles_setting = $this->generateStylesSetSetting($element['#value']);
if ($styles_setting === FALSE) {
$form_state->setError($element, $this->t('The provided list of styles is syntactically incorrect.'));
}
else {
$style_names = array_map(function ($style) {
return $style['name'];
}, $styles_setting);
if (count($style_names) !== count(array_unique($style_names))) {
$form_state->setError($element, $this->t('Each style must have a unique label.'));
}
}
}
/**
* Builds the "stylesSet" configuration part of the CKEditor JS settings.
*
* @see getConfig()
*
* @param string $styles
* The "styles" setting.
* @return array|false
* An array containing the "stylesSet" configuration, or FALSE when the
* syntax is invalid.
*/
protected function generateStylesSetSetting($styles) {
$styles_set = [];
// Early-return when empty.
$styles = trim($styles);
if (empty($styles)) {
return $styles_set;
}
$styles = str_replace(["\r\n", "\r"], "\n", $styles);
foreach (explode("\n", $styles) as $style) {
$style = trim($style);
// Ignore empty lines in between non-empty lines.
if (empty($style)) {
continue;
}
// Validate syntax: element[.class...]|label pattern expected.
if (!preg_match('@^ *[a-zA-Z0-9]+ *(\\.[a-zA-Z0-9_-]+ *)*\\| *.+ *$@', $style)) {
return FALSE;
}
// Parse.
list($selector, $label) = explode('|', $style);
$classes = explode('.', $selector);
$element = array_shift($classes);
// Build the data structure CKEditor's stylescombo plugin expects.
// @see http://docs.cksource.com/CKEditor_3.x/Developers_Guide/Styles
$configured_style = [
'name' => trim($label),
'element' => trim($element),
];
if (!empty($classes)) {
$configured_style['attributes'] = [
'class' => implode(' ', array_map('trim', $classes)),
];
}
$styles_set[] = $configured_style;
}
return $styles_set;
}
}