function color_form_system_theme_settings_alter

Implements hook_form_FORM_ID_alter().

File

core/modules/color/color.module, line 22

Allows users to change the color scheme of themes.

Code

function color_form_system_theme_settings_alter(&$form, &$form_state) {
  if (isset($form_state['build_info']['args'][0])
   && ($theme_name = $form_state['build_info']['args'][0])
     && ($theme_info = color_get_info($theme_name))
     && isset($theme_info['fields'])) {
    $form['color'] = array(
      '#type' => 'fieldset',
      '#title' => t('Color scheme'),
      '#weight' => -1,
      '#attributes' => array(
        'id' => 'color_scheme_form',
        'class' => array('color-form'),
      ),
    );

    $theme_info['schemes'][''] = array('title' => t('Custom'), 'colors' => array());
    $color_sets = array();
    $schemes = array();
    foreach ($theme_info['schemes'] as $key => $scheme) {
      $color_sets[$key] = $scheme['title'];
      $schemes[$key] = $scheme['colors'];
      $schemes[$key] += $theme_info['schemes']['default']['colors'];
    }

    // See if we're using a predefined scheme.
    // Note: we use the original theme when the default scheme is chosen.
    $current_scheme = theme_get_setting('color.palette', $theme_name);
    foreach ($schemes as $key => $scheme) {
      if ($current_scheme == $scheme) {
        $scheme_name = $key;
        break;
      }
    }
    if (empty($scheme_name)) {
      if (empty($current_scheme)) {
        $scheme_name = 'default';
      }
      else {
        $scheme_name = '';
      }
    }

    // Generate the preview markup.
    $preview_url = url('<front>', array(
      'query' => array(
        'preview' => $theme_name
      ),
      'absolute' => TRUE,
    ));
    $preview_markup = theme('color_preview', array('preview_url' => $preview_url));

    $base = backdrop_get_path('module', 'color');
    // Add scheme selector.
    $form['color']['scheme'] = array(
      '#type' => 'select',
      '#title' => t('Color set'),
      '#options' => $color_sets,
      '#default_value' => $scheme_name,
      '#attributes' => array(
        'data-color-schemes' => backdrop_json_encode($schemes),
        'data-color-theme-name' => $theme_name,
        'data-color-preview-markup' => $preview_markup,
        'data-color-preview-token' => backdrop_get_token('color_token'),
      ),
      '#attached' => array(
        // Add custom CSS.
        'css' => array(
          $base . '/css/color.admin.css' => array(),
        ),
        // Add custom JavaScript.
        'js' => array(
          $base . '/js/color.js'
        ),
      ),
    );

    $form['color']['palette'] = array(
      '#type' => 'container',
      '#attributes' => array('id' => 'palette'),
      '#tree' => TRUE,
    );

    // Add palette fields.
    foreach ($theme_info['fields'] as $name => $label) {
      // Avoid placing them if they have already been placed by the theme.
      if (!isset($form['#color_elements']) || !in_array($name, $form['#color_elements'])) {
        $form['color']['palette'][$name] = color_get_color_element($theme_name, $name, $form);
      }
    }

    $form['color']['theme'] = array('#type' => 'value', '#value' => $theme_name);
    $form['color']['info'] = array('#type' => 'value', '#value' => $theme_info);

    $form['#validate'][] = 'color_scheme_form_validate';
    array_unshift($form['#submit'], 'color_scheme_form_submit');

    // Check for legacy Bartik colors.
    // @todo Remove in Backdrop 2.0.
    if ($theme_name === 'bartik') {
      module_load_include('inc', 'color', 'color.legacy');
      bartik_form_system_theme_settings_alter($form, $form_state);
    }
  }
}