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1 <?php
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2
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3 namespace Drupal\views_ui;
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4
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5 use Drupal\Core\Form\FormStateInterface;
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6 use Drupal\Core\Url;
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7
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8 /**
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9 * Form controller for the Views preview form.
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10 *
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11 * @internal
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12 */
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13 class ViewPreviewForm extends ViewFormBase {
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14
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15 /**
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16 * {@inheritdoc}
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17 */
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18 public function form(array $form, FormStateInterface $form_state) {
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19 $view = $this->entity;
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20
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21 $form['#prefix'] = '<div id="views-preview-wrapper" class="views-preview-wrapper views-admin clearfix">';
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22 $form['#suffix'] = '</div>';
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23 $form['#id'] = 'views-ui-preview-form';
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24
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25 $form_state->disableCache();
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26
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27 $form['controls']['#attributes'] = ['class' => ['clearfix']];
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28
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29 $form['controls']['title'] = [
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30 '#prefix' => '<h2 class="view-preview-form__title">',
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31 '#markup' => $this->t('Preview'),
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32 '#suffix' => '</h2>',
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33 ];
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34
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35 // Add a checkbox controlling whether or not this display auto-previews.
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36 $form['controls']['live_preview'] = [
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37 '#type' => 'checkbox',
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38 '#id' => 'edit-displays-live-preview',
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39 '#title' => $this->t('Auto preview'),
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40 '#default_value' => \Drupal::config('views.settings')->get('ui.always_live_preview'),
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41 ];
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42
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43 // Add the arguments textfield
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44 $form['controls']['view_args'] = [
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45 '#type' => 'textfield',
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46 '#title' => $this->t('Preview with contextual filters:'),
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47 '#description' => $this->t('Separate contextual filter values with a "/". For example, %example.', ['%example' => '40/12/10']),
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48 '#id' => 'preview-args',
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49 ];
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50
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51 $args = [];
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52 if (!$form_state->isValueEmpty('view_args')) {
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53 $args = explode('/', $form_state->getValue('view_args'));
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54 }
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55
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56 $user_input = $form_state->getUserInput();
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57 if ($form_state->get('show_preview') || !empty($user_input['js'])) {
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58 $form['preview'] = [
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59 '#weight' => 110,
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60 '#theme_wrappers' => ['container'],
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61 '#attributes' => ['id' => 'views-live-preview', 'class' => ['views-live-preview']],
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62 'preview' => $view->renderPreview($this->displayID, $args),
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63 ];
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64 }
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65 $uri = $view->toUrl('preview-form');
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66 $uri->setRouteParameter('display_id', $this->displayID);
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67 $form['#action'] = $uri->toString();
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68
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69 return $form;
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70 }
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71
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72 /**
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73 * {@inheritdoc}
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74 */
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75 protected function actions(array $form, FormStateInterface $form_state) {
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76 $view = $this->entity;
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77 return [
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78 '#attributes' => [
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79 'id' => 'preview-submit-wrapper',
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80 'class' => ['preview-submit-wrapper'],
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81 ],
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82 'button' => [
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83 '#type' => 'submit',
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84 '#value' => $this->t('Update preview'),
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85 '#attributes' => ['class' => ['arguments-preview']],
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86 '#submit' => ['::submitPreview'],
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87 '#id' => 'preview-submit',
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88 '#ajax' => [
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89 'url' => Url::fromRoute('entity.view.preview_form', ['view' => $view->id(), 'display_id' => $this->displayID]),
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90 'wrapper' => 'views-preview-wrapper',
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91 'event' => 'click',
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92 'progress' => ['type' => 'fullscreen'],
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93 'method' => 'replaceWith',
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94 'disable-refocus' => TRUE,
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95 ],
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96 ],
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97 ];
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98 }
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99
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100 /**
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101 * Form submission handler for the Preview button.
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102 */
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103 public function submitPreview($form, FormStateInterface $form_state) {
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104 $form_state->set('show_preview', TRUE);
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105 $form_state->setRebuild();
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106 }
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107
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108 }
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