Popsu-coloque/web/core/themes/bartik/color/preview.es6.js

/**
 * @file
 * Preview for the Bartik theme.
 */
(function($, Drupal, drupalSettings) {
  Drupal.color = {
    logoChanged: false,
    callback(context, settings, $form) {
      // Change the logo to be the real one.
      if (!this.logoChanged) {
        $('.color-preview .color-preview-logo img').attr(
          'src',
          drupalSettings.color.logo,
        );
        this.logoChanged = true;
      }
      // Remove the logo if the setting is toggled off.
      if (drupalSettings.color.logo === null) {
        $('div').remove('.color-preview-logo');
      }

      const $colorPreview = $form.find('.color-preview');
      const $colorPalette = $form.find('.js-color-palette');

      // Solid background.
      $colorPreview.css(
        'backgroundColor',
        $colorPalette.find('input[name="palette[bg]"]').val(),
      );

      // Text preview.
      $colorPreview
        .find('.color-preview-main h2, .color-preview .preview-content')
        .css('color', $colorPalette.find('input[name="palette[text]"]').val());
      $colorPreview
        .find('.color-preview-content a')
        .css('color', $colorPalette.find('input[name="palette[link]"]').val());

      // Sidebar block.
      const $colorPreviewBlock = $colorPreview.find(
        '.color-preview-sidebar .color-preview-block',
      );
      $colorPreviewBlock.css(
        'background-color',
        $colorPalette.find('input[name="palette[sidebar]"]').val(),
      );
      $colorPreviewBlock.css(
        'border-color',
        $colorPalette.find('input[name="palette[sidebarborders]"]').val(),
      );

      // Footer wrapper background.
      $colorPreview
        .find('.color-preview-footer-wrapper')
        .css(
          'background-color',
          $colorPalette.find('input[name="palette[footer]"]').val(),
        );

      // CSS3 Gradients.
      const gradientStart = $colorPalette
        .find('input[name="palette[top]"]')
        .val();
      const gradientEnd = $colorPalette
        .find('input[name="palette[bottom]"]')
        .val();

      $colorPreview
        .find('.color-preview-header')
        .attr(
          'style',
          `background-color: ${gradientStart}; background-image: -webkit-gradient(linear, 0% 0%, 0% 100%, from(${gradientStart}), to(${gradientEnd})); background-image: -moz-linear-gradient(-90deg, ${gradientStart}, ${gradientEnd});`,
        );

      $colorPreview
        .find('.color-preview-site-name')
        .css(
          'color',
          $colorPalette.find('input[name="palette[titleslogan]"]').val(),
        );
    },
  };
})(jQuery, Drupal, drupalSettings);