GoogleQRCodeAdminForm.php in Google QR Code Generator 8

Namespace

Drupal\google_qr_code\Form

File

src/Form/GoogleQRCodeAdminForm.php

<?php

/**
 * @FILE:
 * Contains \Drupal\googleqrcode\Form\GoogleQRCodeForm
 *
 * Administrative settings for Google QR Code.
 */
namespace Drupal\google_qr_code\Form;

use Drupal\Core\Form\ConfigFormBase;
use Drupal\Core\Form\FormStateInterface;
class GoogleQRCodeAdminForm extends ConfigFormBase {

  // Establish form ID.
  public function getFormID() {
    return 'googleqrcode_admin_settings';
  }

  // Establish what values are editable via the form.
  public function getEditableConfigNames() {
    return [
      'google_qr_code.settings',
    ];
  }

  // Build out the form.
  public function buildForm(array $form, FormStateInterface $form_state) {

    // Load configuration values
    $config = $this
      ->config('google_qr_code.settings');
    $form['google_qr_code_settings'] = array(
      '#type' => 'fieldset',
      '#title' => t('Google QR Code Configuration'),
    );
    $form['google_qr_code_settings']['google_qr_code_when_show'] = array(
      '#type' => 'select',
      '#title' => t('When to render QR COde'),
      '#options' => array(
        "on_pageload" => t('On Page Load'),
        "on_click" => t('On Click'),
      ),
      '#default_value' => $config
        ->get('whenshow') ? $config
        ->get('whenshow') : 'on_pageload',
      '#required' => FALSE,
      '#description' => t('Choose whether you want the QR code to load everytime the page loads (jQuery code) or only get the QR code when generate text in block is clicked.'),
    );
    $form['google_qr_code_image_settings'] = array(
      '#type' => 'fieldset',
      '#title' => t('Google QR Code Image Settings'),
      '#description' => t('Configure QR code width and height here. There is a
maximum size of 1000 pixels for any single dimension, and a total size
of 300,000 pixels'),
    );
    $form['google_qr_code_image_settings']['google_qr_code_height'] = array(
      '#type' => 'textfield',
      '#title' => t('QR Code Height'),
      '#default_value' => $config
        ->get('height') ? $config
        ->get('height') : 250,
      '#size' => 40,
      '#maxlength' => 255,
      '#required' => TRUE,
      '#description' => t('Enter the QR Code Height'),
    );
    $form['google_qr_code_image_settings']['google_qr_code_width'] = array(
      '#type' => 'textfield',
      '#title' => t('QR Code Width'),
      '#default_value' => $config
        ->get('width') ? $config
        ->get('width') : 250,
      '#size' => 40,
      '#maxlength' => 255,
      '#required' => TRUE,
      '#description' => t('Enter the QR Code Width'),
    );
    return parent::buildForm($form, $form_state);
  }

  // Form validation.
  public function validateForm(array &$form, FormStateInterface $form_state) {

    // Check that entered values are numeric.
    if (!is_numeric($form_state
      ->getValue('google_qr_code_height')) || !is_numeric($form_state
      ->getValue('google_qr_code_width'))) {
      $error_text = $this
        ->t('Values entered for height and width must be numeric!');
      $form_state
        ->setErrorByName('google_qr_code_image_settings', $error_text);
    }

    // Check entered pixels VS maximum amount of pixels.
    $total_pixels = $form_state
      ->getValue('google_qr_code_height') * $form_state
      ->getValue('google_qr_code_width');
    if ($total_pixels > 300000) {
      $error_text = $this
        ->t('Total dimensions cannot exceed 300,000px. Currently at @total px', array(
        '@total' => $total_pixels,
      ));
      $form_state
        ->setErrorByName('google_qr_code_image_settings', $error_text);
    }
    parent::validateForm($form, $form_state);

    // TODO: Change the autogenerated stub
  }

  // Submit form processing function.
  public function submitForm(array &$form, FormStateInterface $form_state) {
    $this
      ->config('google_qr_code.settings')
      ->set('whenshow', $form_state
      ->getValue('google_qr_code_when_show'))
      ->set('height', $form_state
      ->getValue('google_qr_code_height'))
      ->set('width', $form_state
      ->getValue('google_qr_code_width'))
      ->save();
    parent::submitForm($form, $form_state);
  }

  // Helper function to determine a fields maximum singular dimension.
  private function _google_qr_code_max_single_dimension($element) {
    if (!empty($element['#value']) && !is_numeric($element['#value'])) {
      form_error($element, t('Has to be a number. Do not include "px"'));
    }
    else {
      if (!empty($element['#value']) && $element['#value'] > 1000) {
        form_error($element, t('Google does not allow single dimensions over 1000px'));
      }
    }
  }

}

Classes

Name	Description
GoogleQRCodeAdminForm