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<?php
/**
* @file
* Contains \Drupal\image\Form\ImageEffectFormBase.
*/
namespace Drupal\image\Form;
use Drupal\Core\Form\FormBase;
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use Drupal\Core\Form\FormState;
use Drupal\Core\Form\FormStateInterface;
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use Drupal\image\ConfigurableImageEffectInterface;
use Drupal\image\ImageStyleInterface;
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use Drupal\Component\Plugin\Exception\PluginNotFoundException;
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use Drupal\Component\Utility\String;
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use Symfony\Component\HttpKernel\Exception\NotFoundHttpException;
/**
* Provides a base form for image effects.
*/
abstract class ImageEffectFormBase extends FormBase {
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/**
* The image style.
*
* @var \Drupal\image\ImageStyleInterface
*/
protected $imageStyle;
/**
* The image effect.
*
* @var \Drupal\image\ImageEffectInterface
*/
protected $imageEffect;
/**
* {@inheritdoc}
*/
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public function getFormId() {
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return 'image_effect_form';
}
/**
* {@inheritdoc}
*
* @param \Drupal\image\ImageStyleInterface $image_style
* The image style.
* @param string $image_effect
* The image effect ID.
*
* @return array
* The form structure.
*
* @throws \Symfony\Component\HttpKernel\Exception\NotFoundHttpException
*/
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public function buildForm(array $form, FormStateInterface $form_state, ImageStyleInterface $image_style = NULL, $image_effect = NULL) {
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$this->imageStyle = $image_style;
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try {
$this->imageEffect = $this->prepareImageEffect($image_effect);
}
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catch (PluginNotFoundException $e) {
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throw new NotFoundHttpException(String::format("Invalid effect id: '@id'.", array('@id' => $image_effect)));
}
$request = $this->getRequest();
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if (!($this->imageEffect instanceof ConfigurableImageEffectInterface)) {
throw new NotFoundHttpException();
}
$form['#attached']['css'][drupal_get_path('module', 'image') . '/css/image.admin.css'] = array();
$form['uuid'] = array(
'#type' => 'value',
'#value' => $this->imageEffect->getUuid(),
);
$form['id'] = array(
'#type' => 'value',
'#value' => $this->imageEffect->getPluginId(),
);
$form['data'] = $this->imageEffect->buildConfigurationForm(array(), $form_state);
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$form['data']['#tree'] = TRUE;
// Check the URL for a weight, then the image effect, otherwise use default.
$form['weight'] = array(
'#type' => 'hidden',
'#value' => $request->query->has('weight') ? (int) $request->query->get('weight') : $this->imageEffect->getWeight(),
);
$form['actions'] = array('#type' => 'actions');
$form['actions']['submit'] = array(
'#type' => 'submit',
'#button_type' => 'primary',
);
$form['actions']['cancel'] = array(
'#type' => 'link',
'#title' => $this->t('Cancel'),
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) + $this->imageStyle->urlInfo('edit-form')->toRenderArray();
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return $form;
}
/**
* {@inheritdoc}
*/
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public function validateForm(array &$form, FormStateInterface $form_state) {
// The image effect configuration is stored in the 'data' key in the form,
// pass that through for validation.
$effect_data = (new FormState())->setValues($form_state->getValue('data'));
$this->imageEffect->validateConfigurationForm($form, $effect_data);
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// Update the original form values.
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$form_state->setValue('data', $effect_data->getValues());
}
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/**
* {@inheritdoc}
*/
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public function submitForm(array &$form, FormStateInterface $form_state) {
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form_state_values_clean($form_state);
// The image effect configuration is stored in the 'data' key in the form,
// pass that through for submission.
$effect_data = (new FormState())->setValues($form_state->getValue('data'));
$this->imageEffect->submitConfigurationForm($form, $effect_data);
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// Update the original form values.
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$form_state->setValue('data', $effect_data->getValues());
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$this->imageEffect->setWeight($form_state->getValue('weight'));
if (!$this->imageEffect->getUuid()) {
$this->imageStyle->addImageEffect($this->imageEffect->getConfiguration());
}
$this->imageStyle->save();
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drupal_set_message($this->t('The image effect was successfully applied.'));
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$form_state->setRedirectUrl($this->imageStyle->urlInfo('edit-form'));
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}
/**
* Converts an image effect ID into an object.
*
* @param string $image_effect
* The image effect ID.
*
* @return \Drupal\image\ImageEffectInterface
* The image effect object.
*/
abstract protected function prepareImageEffect($image_effect);
}