1 files changed, 0 insertions, 246 deletions
diff --git a/src/utils/plugins/prism-color-scheme.js b/src/utils/plugins/prism-color-scheme.js
deleted file mode 100644
index 2632dd3..0000000
--- a/src/utils/plugins/prism-color-scheme.js
+++ /dev/null
@@ -1,246 +0,0 @@
-(function () {
-  if (typeof Prism === 'undefined' || typeof document === 'undefined') {
-    return;
-  }
-
-  if (!Prism.plugins.toolbar) {
-    console.warn('Color scheme plugin loaded before Toolbar plugin.');
-
-    return;
-  }
-
-  /**
-   *
-   * @typedef {"dark" | "light" | "system"} Theme
-   * @typedef {Record<"current", Theme> & Record<"dark" | "light", string>} Settings
-   */
-
-  var storage = {
-    /**
-     * Get a deserialized value from local storage.
-     *
-     * @param {string} key - The local storage key.
-     * @returns {string | undefined} The value of the given key.
-     */
-    get: function (key) {
-      var serializedItem = localStorage.getItem(key);
-      return serializedItem ? JSON.parse(serializedItem) : undefined;
-    },
-    /**
-     * Set or update a local storage key with a new serialized value.
-     *
-     * @param {string} key - The local storage key.
-     * @param {string} value - The value of the given key.
-     */
-    set: function (key, value) {
-      var serializedValue = JSON.stringify(value);
-      localStorage.setItem(key, serializedValue);
-    },
-  };
-
-  /**
-   * Check if user has set its color scheme preference.
-   *
-   * @returns {boolean} True if user prefers dark color scheme.
-   */
-  function prefersDarkScheme() {
-    return (
-      window.matchMedia &&
-      window.matchMedia('(prefers-color-scheme: dark)').matches
-    );
-  }
-
-  /**
-   * Get the theme that matches the system theme.
-   *
-   * @returns {Theme} The theme to use.
-   */
-  function getThemeFromSystem() {
-    return prefersDarkScheme() ? 'dark' : 'light';
-  }
-
-  /**
-   * Check if the provided string is a valid theme.
-   *
-   * @param {string} theme - A theme to check.
-   * @returns {boolean} True if it is a valid theme.
-   */
-  function isValidTheme(theme) {
-    return theme === 'dark' || theme === 'light' || theme === 'system';
-  }
-
-  /**
-   * Set the default theme depending on user preferences.
-   *
-   * @returns {Theme} The default theme.
-   */
-  function setDefaultTheme() {
-    var theme = storage.get('prismjs-color-scheme');
-
-    return theme && isValidTheme(theme) ? theme : 'system';
-  }
-
-  /**
-   * Traverses up the DOM tree to find data attributes that override the
-   * default plugin settings.
-   *
-   * @param {Element} startElement - An element to start from.
-   * @returns {Settings} The plugin settings.
-   */
-  function getSettings(startElement) {
-    /** @type Settings */
-    var settings = {
-      current: setDefaultTheme(),
-      dark: 'Toggle Dark Theme',
-      light: 'Toggle Light Theme',
-    };
-    var prefix = 'data-prismjs-color-scheme-';
-
-    for (var key in settings) {
-      var attr = prefix + key;
-      var element = startElement;
-
-      while (element && !element.hasAttribute(attr)) {
-        element = element.parentElement;
-      }
-
-      if (element) {
-        settings[key] = element.getAttribute(attr);
-      }
-    }
-
-    return settings;
-  }
-
-  /**
-   * Retrieve the new theme depending on current theme value.
-   *
-   * @param {Theme} currentTheme - The current theme.
-   * @returns {Theme} The new theme.
-   */
-  function getNewTheme(currentTheme) {
-    switch (currentTheme) {
-      case 'light':
-        return 'dark';
-      case 'dark':
-        return 'light';
-      case 'system':
-      default:
-        return getNewTheme(getThemeFromSystem());
-    }
-  }
-
-  /**
-   * Get the button content depending on current theme.
-   *
-   * @param {Theme} theme - The current theme.
-   * @param {Settings} settings - The plugin settings.
-   * @returns {string} The button text.
-   */
-  function getButtonContent(theme, settings) {
-    return theme === 'dark' ? settings['light'] : settings['dark'];
-  }
-
-  /**
-   * Update the button text depending on the current theme.
-   *
-   * @param {HTMLButtonElement} button - The color scheme button.
-   * @param {Settings} settings - The plugin settings.
-   */
-  function updateButtonText(button, settings) {
-    var theme =
-      settings['current'] === 'system'
-        ? getThemeFromSystem()
-        : settings['current'];
-
-    button.textContent = getButtonContent(theme, settings);
-  }
-
-  /**
-   * Update pre data-prismjs-color-scheme attribute.
-   *
-   * @param {HTMLPreElement} pre - The pre element wrapping the code.
-   * @param {Theme} theme - The current theme.
-   */
-  function updatePreAttribute(pre, theme) {
-    pre.setAttribute('data-prismjs-color-scheme-current', theme);
-  }
-
-  /**
-   * Update pre attribute for all code blocks.
-   *
-   * @param {Theme} theme - The new theme.
-   */
-  function switchTheme(theme) {
-    var allPre = document.querySelectorAll(
-      'pre[data-prismjs-color-scheme-current]'
-    );
-    allPre.forEach((pre) => {
-      updatePreAttribute(pre, theme);
-    });
-  }
-
-  /**
-   * Set current theme on pre attribute change.
-   *
-   * @param {HTMLPreElement} pre - The pre element wrapping the code.
-   * @param {Settings} settings - The plugin settings.
-   */
-  function listenAttributeChange(pre, settings) {
-    var observer = new MutationObserver(function (mutations) {
-      mutations.forEach((record) => {
-        var mutatedPre = record.target;
-        var button = mutatedPre.parentElement.querySelector(
-          '.prism-color-scheme-button'
-        );
-        var newTheme = mutatedPre.getAttribute(
-          'data-prismjs-color-scheme-current'
-        );
-        settings['current'] = newTheme;
-        updateButtonText(button, settings);
-      });
-    });
-    observer.observe(pre, {
-      attributes: true,
-      attributeFilter: ['data-prismjs-color-scheme-current'],
-    });
-  }
-
-  /**
-   * Create a color scheme button.
-   *
-   * @param {Object<string, any>} env - The environment variables of the hook.
-   * @returns {HTMLButtonElement} The color scheme button.
-   */
-  function getColorSchemeButton(env) {
-    var element = env.element;
-    var pre = element.parentElement;
-    var settings = getSettings(element);
-    var themeButton = document.createElement('button');
-    themeButton.className = 'prism-color-scheme-button';
-    themeButton.setAttribute('type', 'button');
-    updateButtonText(themeButton, settings);
-    updatePreAttribute(pre, settings['current']);
-    listenAttributeChange(pre, settings);
-
-    themeButton.addEventListener('click', () => {
-      var newTheme = getNewTheme(settings['current']);
-      switchTheme(newTheme);
-      storage.set('prismjs-color-scheme', newTheme);
-    });
-
-    window.addEventListener('storage', (e) => {
-      if (e.key === 'prismjs-color-scheme') {
-        var newTheme = JSON.parse(e.newValue);
-        if (isValidTheme(newTheme)) updatePreAttribute(pre, newTheme);
-      }
-    });
-
-    return themeButton;
-  }
-
-  /**
-   * Register a new button in Prism toolbar plugin.
-   */
-  Prism.plugins.toolbar.registerButton('color-scheme', getColorSchemeButton);
-})();