Drupal 8.0.0 beta 12. More info: https://www.drupal.org/node/2514176

core/modules/telephone/src/Plugin/Field/FieldFormatter/TelephoneLinkFormatter.php

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+<?php
+
+/**
+ * @file
+ * Contains \Drupal\telephone\Plugin\Field\FieldFormatter\TelephoneLinkFormatter.
+ */
+
+namespace Drupal\telephone\Plugin\Field\FieldFormatter;
+
+use Drupal\Core\Field\FormatterBase;
+use Drupal\Core\Field\FieldItemListInterface;
+use Drupal\Core\Form\FormStateInterface;
+use Drupal\Core\Url;
+
+/**
+ * Plugin implementation of the 'telephone_link' formatter.
+ *
+ * @FieldFormatter(
+ *   id = "telephone_link",
+ *   label = @Translation("Telephone link"),
+ *   field_types = {
+ *     "telephone"
+ *   }
+ * )
+ */
+class TelephoneLinkFormatter extends FormatterBase {
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function defaultSettings() {
+    return array(
+      'title' => '',
+    ) + parent::defaultSettings();
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function settingsForm(array $form, FormStateInterface $form_state) {
+    $elements['title'] = array(
+      '#type' => 'textfield',
+      '#title' => t('Title to replace basic numeric telephone number display'),
+      '#default_value' => $this->getSetting('title'),
+    );
+
+    return $elements;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function settingsSummary() {
+    $summary = array();
+    $settings = $this->getSettings();
+
+    if (!empty($settings['title'])) {
+      $summary[] = t('Link using text: @title', array('@title' => $settings['title']));
+    }
+    else {
+      $summary[] = t('Link using provided telephone number.');
+    }
+
+    return $summary;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function viewElements(FieldItemListInterface $items) {
+    $element = array();
+    $title_setting = $this->getSetting('title');
+
+    foreach ($items as $delta => $item) {
+      // Render each element as link.
+      $element[$delta] = array(
+        '#type' => 'link',
+        // Use custom title if available, otherwise use the telephone number
+        // itself as title.
+        '#title' => $title_setting ?: $item->value,
+        // Prepend 'tel:' to the telephone number.
+        '#url' => Url::fromUri('tel:' . rawurlencode(preg_replace('/\s+/', '', $item->value))),
+        '#options' => array('external' => TRUE),
+      );
+
+      if (!empty($item->_attributes)) {
+        $element[$delta]['#options'] += array('attributes' => array());
+        $element[$delta]['#options']['attributes'] += $item->_attributes;
+        // Unset field item attributes since they have been included in the
+        // formatter output and should not be rendered in the field template.
+        unset($item->_attributes);
+      }
+    }
+
+    return $element;
+  }
+}

core/modules/telephone/src/Plugin/Field/FieldType/TelephoneItem.php

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+<?php
+
+/**
+ * @file
+ * Contains \Drupal\telephone\Plugin\Field\FieldType\TelephoneItem.
+ */
+
+namespace Drupal\telephone\Plugin\Field\FieldType;
+
+use Drupal\Core\Field\FieldDefinitionInterface;
+use Drupal\Core\Field\FieldItemBase;
+use Drupal\Core\Field\FieldStorageDefinitionInterface;
+use Drupal\Core\TypedData\DataDefinition;
+
+/**
+ * Plugin implementation of the 'telephone' field type.
+ *
+ * @FieldType(
+ *   id = "telephone",
+ *   label = @Translation("Telephone number"),
+ *   description = @Translation("This field stores a telephone number in the database."),
+ *   category = @Translation("Number"),
+ *   default_widget = "telephone_default",
+ *   default_formatter = "basic_string"
+ * )
+ */
+class TelephoneItem extends FieldItemBase {
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function schema(FieldStorageDefinitionInterface $field_definition) {
+    return array(
+      'columns' => array(
+        'value' => array(
+          'type' => 'varchar',
+          'length' => 256,
+        ),
+      ),
+    );
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function propertyDefinitions(FieldStorageDefinitionInterface $field_definition) {
+    $properties['value'] = DataDefinition::create('string')
+      ->setLabel(t('Telephone number'))
+      ->setRequired(TRUE);
+
+    return $properties;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function isEmpty() {
+    $value = $this->get('value')->getValue();
+    return $value === NULL || $value === '';
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getConstraints() {
+    $constraint_manager = \Drupal::typedDataManager()->getValidationConstraintManager();
+    $constraints = parent::getConstraints();
+
+    $max_length = 256;
+    $constraints[] = $constraint_manager->create('ComplexData', array(
+      'value' => array(
+        'Length' => array(
+          'max' => $max_length,
+          'maxMessage' => t('%name: the telephone number may not be longer than @max characters.', array('%name' => $this->getFieldDefinition()->getLabel(), '@max' => $max_length)),
+        )
+      ),
+    ));
+
+    return $constraints;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function generateSampleValue(FieldDefinitionInterface $field_definition) {
+    $values['value'] = rand(pow(10, 8), pow(10, 9)-1);
+    return $values;
+  }
+
+}

core/modules/telephone/src/Plugin/Field/FieldWidget/TelephoneDefaultWidget.php

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+<?php
+
+/**
+ * @file
+ * Contains \Drupal\telephone\Plugin\Field\FieldWidget\TelephoneDefaultWidget.
+ */
+
+namespace Drupal\telephone\Plugin\Field\FieldWidget;
+
+use Drupal\Core\Field\FieldItemListInterface;
+use Drupal\Core\Field\WidgetBase;
+use Drupal\Core\Form\FormStateInterface;
+
+/**
+ * Plugin implementation of the 'telephone_default' widget.
+ *
+ * @FieldWidget(
+ *   id = "telephone_default",
+ *   label = @Translation("Telephone number"),
+ *   field_types = {
+ *     "telephone"
+ *   }
+ * )
+ */
+class TelephoneDefaultWidget extends WidgetBase {
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function defaultSettings() {
+    return array(
+      'placeholder' => '',
+    ) + parent::defaultSettings();
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function settingsForm(array $form, FormStateInterface $form_state) {
+    $element['placeholder'] = array(
+      '#type' => 'textfield',
+      '#title' => t('Placeholder'),
+      '#default_value' => $this->getSetting('placeholder'),
+      '#description' => t('Text that will be shown inside the field until a value is entered. This hint is usually a sample value or a brief description of the expected format.'),
+    );
+    return $element;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function settingsSummary() {
+    $summary = array();
+
+    $placeholder = $this->getSetting('placeholder');
+    if (!empty($placeholder)) {
+      $summary[] = t('Placeholder: @placeholder', array('@placeholder' => $placeholder));
+    }
+    else {
+      $summary[] = t('No placeholder');
+    }
+
+    return $summary;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function formElement(FieldItemListInterface $items, $delta, array $element, array &$form, FormStateInterface $form_state) {
+    $element['value'] = $element + array(
+      '#type' => 'tel',
+      '#default_value' => isset($items[$delta]->value) ? $items[$delta]->value : NULL,
+      '#placeholder' => $this->getSetting('placeholder'),
+    );
+    return $element;
+  }
+
+}

core/modules/telephone/src/Tests/TelephoneFieldTest.php

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+<?php
+
+/**
+ * @file
+ * Contains \Drupal\telephone\Tests\TelephoneFieldTest.
+ */
+
+namespace Drupal\telephone\Tests;
+
+use Drupal\simpletest\WebTestBase;
+
+/**
+ * Tests the creation of telephone fields.
+ *
+ * @group telephone
+ */
+class TelephoneFieldTest extends WebTestBase {
+
+  /**
+   * Modules to enable.
+   *
+   * @var array
+   */
+  public static $modules = array(
+    'field',
+    'node',
+    'telephone'
+  );
+
+  /**
+   * A user with permission to create articles.
+   *
+   * @var \Drupal\user\UserInterface
+   */
+  protected $webUser;
+
+  protected function setUp() {
+    parent::setUp();
+
+    $this->drupalCreateContentType(array('type' => 'article'));
+    $this->webUser = $this->drupalCreateUser(array('create article content', 'edit own article content'));
+    $this->drupalLogin($this->webUser);
+  }
+
+  // Test fields.
+
+  /**
+   * Helper function for testTelephoneField().
+   */
+  function testTelephoneField() {
+
+    // Add the telephone field to the article content type.
+    entity_create('field_storage_config', array(
+      'field_name' => 'field_telephone',
+      'entity_type' => 'node',
+      'type' => 'telephone',
+    ))->save();
+    entity_create('field_config', array(
+      'field_name' => 'field_telephone',
+      'label' => 'Telephone Number',
+      'entity_type' => 'node',
+      'bundle' => 'article',
+    ))->save();
+
+    entity_get_form_display('node', 'article', 'default')
+      ->setComponent('field_telephone', array(
+        'type' => 'telephone_default',
+        'settings' => array(
+          'placeholder' => '123-456-7890',
+        ),
+      ))
+      ->save();
+
+    entity_get_display('node', 'article', 'default')
+      ->setComponent('field_telephone', array(
+        'type' => 'telephone_link',
+        'weight' => 1,
+      ))
+      ->save();
+
+    // Display creation form.
+    $this->drupalGet('node/add/article');
+    $this->assertFieldByName("field_telephone[0][value]", '', 'Widget found.');
+    $this->assertRaw('placeholder="123-456-7890"');
+
+    // Test basic entry of telephone field.
+    $edit = array(
+      'title[0][value]' => $this->randomMachineName(),
+      'field_telephone[0][value]' => "123456789",
+    );
+
+    $this->drupalPostForm(NULL, $edit, t('Save'));
+    $this->assertRaw('<a href="tel:123456789">', 'A telephone link is provided on the article node page.');
+
+    // Add number with a space in it. Need to ensure it is stripped on output.
+    $edit = array(
+      'title[0][value]' => $this->randomMachineName(),
+      'field_telephone[0][value]' => "1234 56789",
+    );
+
+    $this->drupalPostForm('node/add/article', $edit, t('Save'));
+    $this->assertRaw('<a href="tel:123456789">', 'Telephone link is output with whitespace removed.');
+  }
+}

core/modules/telephone/src/Tests/TelephoneItemTest.php

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+<?php
+
+/**
+ * @file
+ * Contains \Drupal\telephone\Tests\TelephoneItemTest.
+ */
+
+namespace Drupal\telephone\Tests;
+
+use Drupal\Core\Field\FieldItemListInterface;
+use Drupal\Core\Field\FieldItemInterface;
+use Drupal\field\Tests\FieldUnitTestBase;
+
+/**
+ * Tests the new entity API for the telephone field type.
+ *
+ * @group telephone
+ */
+class TelephoneItemTest extends FieldUnitTestBase {
+
+  /**
+   * Modules to enable.
+   *
+   * @var array
+   */
+  public static $modules = array('telephone');
+
+  protected function setUp() {
+    parent::setUp();
+
+    // Create a telephone field storage and field for validation.
+    entity_create('field_storage_config', array(
+      'field_name' => 'field_test',
+      'entity_type' => 'entity_test',
+      'type' => 'telephone',
+    ))->save();
+    entity_create('field_config', array(
+      'entity_type' => 'entity_test',
+      'field_name' => 'field_test',
+      'bundle' => 'entity_test',
+    ))->save();
+  }
+
+  /**
+   * Tests using entity fields of the telephone field type.
+   */
+  public function testTestItem() {
+    // Verify entity creation.
+    $entity = entity_create('entity_test');
+    $value = '+0123456789';
+    $entity->field_test = $value;
+    $entity->name->value = $this->randomMachineName();
+    $entity->save();
+
+    // Verify entity has been created properly.
+    $id = $entity->id();
+    $entity = entity_load('entity_test', $id);
+    $this->assertTrue($entity->field_test instanceof FieldItemListInterface, 'Field implements interface.');
+    $this->assertTrue($entity->field_test[0] instanceof FieldItemInterface, 'Field item implements interface.');
+    $this->assertEqual($entity->field_test->value, $value);
+    $this->assertEqual($entity->field_test[0]->value, $value);
+
+    // Verify changing the field value.
+    $new_value = '+41' . rand(1000000, 9999999);
+    $entity->field_test->value = $new_value;
+    $this->assertEqual($entity->field_test->value, $new_value);
+
+    // Read changed entity and assert changed values.
+    $entity->save();
+    $entity = entity_load('entity_test', $id);
+    $this->assertEqual($entity->field_test->value, $new_value);
+
+    // Test sample item generation.
+    $entity = entity_create('entity_test');
+    $entity->field_test->generateSampleItems();
+    $this->entityValidateAndSave($entity);
+  }
+
+}