visually_impaired_module.module in Visually Impaired Support (module) 7

Provides version for visually impaired people.

File

visually_impaired_module.module

<?php

/**
 * @file
 * Provides version for visually impaired people.
 */

/**
 * Implements hook_help().
 */
function visually_impaired_module_help($path, $arg) {
  return '';
}

/**
 * Implements hook_init().
 */
function visually_impaired_module_init() {
  drupal_add_library('system', 'jquery.cookie');
  if (path_is_admin(current_path()) && variable_get('visually_impaired_module_selection') == 'default') {
    drupal_set_message(t('Please select visually impaired theme in appearance settings'), 'warning');
  }
}

/**
 * Implements hook_block_info().
 */
function visually_impaired_module_block_info() {
  $blocks['visually_impaired_block1'] = [
    'info' => t('Visually Impaired block'),
    'cache' => DRUPAL_CACHE_PER_ROLE,
  ];
  $blocks['visually_impaired_block2'] = [
    'info' => t('Normal version block'),
    'cache' => DRUPAL_CACHE_PER_ROLE,
  ];
  return $blocks;
}

/**
 * Implements hook_block_configure().
 */
function visually_impaired_module_block_configure($delta = '') {
  $form = [];
  $active = [
    0 => t('Text'),
    1 => t('Image'),
  ];
  if ($delta == 'visually_impaired_block1' || $delta == 'visually_impaired_block2') {
    $form['block_style'] = [
      '#type' => 'radios',
      '#title' => t('Block style'),
      '#required' => TRUE,
      '#options' => $active,
      '#default_value' => variable_get($delta . '_block_style', 1),
    ];
  }
  return $form;
}

/**
 * Implements hook_block_save().
 */
function visually_impaired_module_block_save($delta = '', $edit = []) {
  if ($delta == 'visually_impaired_block1' || $delta == 'visually_impaired_block2') {
    variable_set($delta . '_block_style', $edit['block_style']);
  }
}

/**
 * Implements hook_block_view().
 */
function visually_impaired_module_block_view($delta = '') {
  $block = [];
  switch ($delta) {
    case 'visually_impaired_block1':
      $block['subject'] = '';
      $block['content'] = [
        drupal_get_form('visually_impaired_module_create_form1'),
      ];
      break;
    case 'visually_impaired_block2':
      $block['subject'] = '';
      $block['content'] = [
        drupal_get_form('visually_impaired_module_create_form2'),
      ];
      break;
  }
  return $block;
}

/**
 * Create button for Visually Impaired Block.
 */
function visually_impaired_module_create_form1($form, &$form_state) {
  $classes = [];
  variable_get('visually_impaired_block1_block_style', 1) ? $classes[] = 'vi-special-block-image' : ($classes[] = 'vi-special-block-text');
  $form['visually_impaired-block'] = [
    '#type' => 'submit',
    '#submit' => [
      'visually_impaired_module_submission_handler1',
    ],
    '#attributes' => [
      'itemprop' => 'copy',
      'class' => $classes,
    ],
    '#value' => t('Visually impaired site version'),
  ];
  return $form;
}

/**
 * Create button for Normal Block.
 */
function visually_impaired_module_create_form2($form, &$form_state) {
  $classes = [];
  variable_get('visually_impaired_block2_block_style', 1) ? $classes[] = 'vi-normal-block-image' : ($classes[] = 'vi-normal-block-text');
  $form['visually_impaired-normal-block'] = [
    '#type' => 'submit',
    '#attributes' => [
      'class' => $classes,
    ],
    '#value' => t('Normal site version'),
    '#submit' => [
      'visually_impaired_module_submission_handler2',
    ],
  ];
  return $form;
}

/**
 * Visually Impaired Block Button Submit.
 */
function visually_impaired_module_submission_handler1() {
  setcookie('visually_impaired', 'on', 0, '/');
  cache_clear_all();
}

/**
 * Normal Block Button Submit.
 */
function visually_impaired_module_submission_handler2() {
  setcookie('visually_impaired', 'off', 0, '/');
  cache_clear_all();
}

/**
 * Alter the system theme settings form to add the VI theme settings.
 */
function visually_impaired_module_form_system_theme_settings_alter(&$form, $form_state, $form_id) {
  if ($form['var']['#value'] == 'theme_settings') {
    $form['visually_impaired_module'] = [
      '#type' => 'fieldset',
      '#prefix' => '<div class="theme-settings-right">',
      '#suffix' => '</div>',
      '#title' => t('Please select visually impaired theme'),
      '#description' => '',
      '#weight' => -4,
    ];
    $themes = [
      'default' => t('Default'),
    ];
    $options = list_themes();
    foreach ($options as $name => $attr) {
      if ($attr->status) {
        $themes[$name] = $attr->info['name'];
      }
    }
    $form['visually_impaired_module']['visually_impaired_module_selection'] = [
      '#type' => 'select',
      '#title' => '',
      '#description' => '',
      '#options' => $themes,
      '#default_value' => variable_get('visually_impaired_module_selection', 'default'),
    ];
    $form['#submit'][] = 'visually_impaired_module_settings_submit';
  }
}

/**
 * Submit handler on the theme settings to save the visually_impaired theme.
 */
function visually_impaired_module_settings_submit($form, $form_state) {
  if (isset($form_state['values']['visually_impaired_module_selection'])) {
    variable_set('visually_impaired_module_selection', $form_state['values']['visually_impaired_module_selection']);
  }
}

/**
 * Implements hook_custom_theme().
 */
function visually_impaired_module_custom_theme() {
  if (arg(0) == 'admin') {
    return variable_get('admin_theme');
  }
  elseif (isset($_COOKIE['visually_impaired']) && $_COOKIE['visually_impaired'] == 'on') {
    return variable_get('visually_impaired_module_selection', 'default');
  }
}

Functions

Name	Description
visually_impaired_module_block_configure	Implements hook_block_configure().
visually_impaired_module_block_info	Implements hook_block_info().
visually_impaired_module_block_save	Implements hook_block_save().
visually_impaired_module_block_view	Implements hook_block_view().
visually_impaired_module_create_form1	Create button for Visually Impaired Block.
visually_impaired_module_create_form2	Create button for Normal Block.
visually_impaired_module_custom_theme	Implements hook_custom_theme().
visually_impaired_module_form_system_theme_settings_alter	Alter the system theme settings form to add the VI theme settings.
visually_impaired_module_help	Implements hook_help().
visually_impaired_module_init	Implements hook_init().
visually_impaired_module_settings_submit	Submit handler on the theme settings to save the visually_impaired theme.
visually_impaired_module_submission_handler1	Visually Impaired Block Button Submit.
visually_impaired_module_submission_handler2	Normal Block Button Submit.