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root / drupal7 / misc / drupal.js @ 2196f227

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var Drupal = Drupal || { 'settings': {}, 'behaviors': {}, 'locale': {} };
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// Allow other JavaScript libraries to use $.
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jQuery.noConflict();
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(function ($) {
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/**
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 * Override jQuery.fn.init to guard against XSS attacks.
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 *
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 * See http://bugs.jquery.com/ticket/9521
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 */
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var jquery_init = $.fn.init;
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$.fn.init = function (selector, context, rootjQuery) {
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  // If the string contains a "#" before a "<", treat it as invalid HTML.
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  if (selector && typeof selector === 'string') {
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    var hash_position = selector.indexOf('#');
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    if (hash_position >= 0) {
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      var bracket_position = selector.indexOf('<');
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      if (bracket_position > hash_position) {
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        throw 'Syntax error, unrecognized expression: ' + selector;
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      }
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    }
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  }
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  return jquery_init.call(this, selector, context, rootjQuery);
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};
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$.fn.init.prototype = jquery_init.prototype;
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/**
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 * Attach all registered behaviors to a page element.
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 *
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 * Behaviors are event-triggered actions that attach to page elements, enhancing
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 * default non-JavaScript UIs. Behaviors are registered in the Drupal.behaviors
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 * object using the method 'attach' and optionally also 'detach' as follows:
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 * @code
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 *    Drupal.behaviors.behaviorName = {
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 *      attach: function (context, settings) {
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 *        ...
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 *      },
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 *      detach: function (context, settings, trigger) {
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 *        ...
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 *      }
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 *    };
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 * @endcode
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 *
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 * Drupal.attachBehaviors is added below to the jQuery ready event and so
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 * runs on initial page load. Developers implementing AHAH/Ajax in their
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 * solutions should also call this function after new page content has been
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 * loaded, feeding in an element to be processed, in order to attach all
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 * behaviors to the new content.
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 *
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 * Behaviors should use
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 * @code
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 *   $(selector).once('behavior-name', function () {
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 *     ...
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 *   });
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 * @endcode
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 * to ensure the behavior is attached only once to a given element. (Doing so
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 * enables the reprocessing of given elements, which may be needed on occasion
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 * despite the ability to limit behavior attachment to a particular element.)
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 *
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 * @param context
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 *   An element to attach behaviors to. If none is given, the document element
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 *   is used.
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 * @param settings
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 *   An object containing settings for the current context. If none given, the
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 *   global Drupal.settings object is used.
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 */
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Drupal.attachBehaviors = function (context, settings) {
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  context = context || document;
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  settings = settings || Drupal.settings;
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  // Execute all of them.
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  $.each(Drupal.behaviors, function () {
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    if ($.isFunction(this.attach)) {
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      this.attach(context, settings);
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    }
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  });
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};
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/**
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 * Detach registered behaviors from a page element.
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 *
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 * Developers implementing AHAH/Ajax in their solutions should call this
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 * function before page content is about to be removed, feeding in an element
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 * to be processed, in order to allow special behaviors to detach from the
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 * content.
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 *
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 * Such implementations should look for the class name that was added in their
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 * corresponding Drupal.behaviors.behaviorName.attach implementation, i.e.
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 * behaviorName-processed, to ensure the behavior is detached only from
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 * previously processed elements.
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 *
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 * @param context
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 *   An element to detach behaviors from. If none is given, the document element
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 *   is used.
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 * @param settings
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 *   An object containing settings for the current context. If none given, the
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 *   global Drupal.settings object is used.
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 * @param trigger
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 *   A string containing what's causing the behaviors to be detached. The
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 *   possible triggers are:
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 *   - unload: (default) The context element is being removed from the DOM.
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 *   - move: The element is about to be moved within the DOM (for example,
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 *     during a tabledrag row swap). After the move is completed,
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 *     Drupal.attachBehaviors() is called, so that the behavior can undo
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 *     whatever it did in response to the move. Many behaviors won't need to
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 *     do anything simply in response to the element being moved, but because
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 *     IFRAME elements reload their "src" when being moved within the DOM,
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 *     behaviors bound to IFRAME elements (like WYSIWYG editors) may need to
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 *     take some action.
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 *   - serialize: When an Ajax form is submitted, this is called with the
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 *     form as the context. This provides every behavior within the form an
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 *     opportunity to ensure that the field elements have correct content
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 *     in them before the form is serialized. The canonical use-case is so
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 *     that WYSIWYG editors can update the hidden textarea to which they are
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 *     bound.
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 *
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 * @see Drupal.attachBehaviors
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 */
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Drupal.detachBehaviors = function (context, settings, trigger) {
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  context = context || document;
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  settings = settings || Drupal.settings;
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  trigger = trigger || 'unload';
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  // Execute all of them.
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  $.each(Drupal.behaviors, function () {
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    if ($.isFunction(this.detach)) {
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      this.detach(context, settings, trigger);
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    }
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  });
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};
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/**
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 * Encode special characters in a plain-text string for display as HTML.
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 *
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 * @ingroup sanitization
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 */
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Drupal.checkPlain = function (str) {
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  var character, regex,
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      replace = { '&': '&amp;', '"': '&quot;', '<': '&lt;', '>': '&gt;' };
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  str = String(str);
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  for (character in replace) {
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    if (replace.hasOwnProperty(character)) {
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      regex = new RegExp(character, 'g');
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      str = str.replace(regex, replace[character]);
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    }
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  }
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  return str;
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};
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/**
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 * Replace placeholders with sanitized values in a string.
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 *
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 * @param str
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 *   A string with placeholders.
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 * @param args
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 *   An object of replacements pairs to make. Incidences of any key in this
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 *   array are replaced with the corresponding value. Based on the first
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 *   character of the key, the value is escaped and/or themed:
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 *    - !variable: inserted as is
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 *    - @variable: escape plain text to HTML (Drupal.checkPlain)
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 *    - %variable: escape text and theme as a placeholder for user-submitted
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 *      content (checkPlain + Drupal.theme('placeholder'))
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 *
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 * @see Drupal.t()
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 * @ingroup sanitization
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 */
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Drupal.formatString = function(str, args) {
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  // Transform arguments before inserting them.
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  for (var key in args) {
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    switch (key.charAt(0)) {
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      // Escaped only.
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      case '@':
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        args[key] = Drupal.checkPlain(args[key]);
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      break;
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      // Pass-through.
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      case '!':
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        break;
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      // Escaped and placeholder.
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      case '%':
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      default:
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        args[key] = Drupal.theme('placeholder', args[key]);
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        break;
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    }
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    str = str.replace(key, args[key]);
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  }
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  return str;
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};
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/**
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 * Translate strings to the page language or a given language.
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 *
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 * See the documentation of the server-side t() function for further details.
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 *
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 * @param str
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 *   A string containing the English string to translate.
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 * @param args
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 *   An object of replacements pairs to make after translation. Incidences
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 *   of any key in this array are replaced with the corresponding value.
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 *   See Drupal.formatString().
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 *
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 * @param options
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 *   - 'context' (defaults to the empty context): The context the source string
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 *     belongs to.
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 *
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 * @return
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 *   The translated string.
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 */
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Drupal.t = function (str, args, options) {
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  options = options || {};
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  options.context = options.context || '';
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  // Fetch the localized version of the string.
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  if (Drupal.locale.strings && Drupal.locale.strings[options.context] && Drupal.locale.strings[options.context][str]) {
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    str = Drupal.locale.strings[options.context][str];
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  }
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  if (args) {
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    str = Drupal.formatString(str, args);
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  }
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  return str;
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};
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/**
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 * Format a string containing a count of items.
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 *
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 * This function ensures that the string is pluralized correctly. Since Drupal.t() is
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 * called by this function, make sure not to pass already-localized strings to it.
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 *
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 * See the documentation of the server-side format_plural() function for further details.
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 *
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 * @param count
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 *   The item count to display.
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 * @param singular
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 *   The string for the singular case. Please make sure it is clear this is
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 *   singular, to ease translation (e.g. use "1 new comment" instead of "1 new").
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 *   Do not use @count in the singular string.
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 * @param plural
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 *   The string for the plural case. Please make sure it is clear this is plural,
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 *   to ease translation. Use @count in place of the item count, as in "@count
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 *   new comments".
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 * @param args
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 *   An object of replacements pairs to make after translation. Incidences
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 *   of any key in this array are replaced with the corresponding value.
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 *   See Drupal.formatString().
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 *   Note that you do not need to include @count in this array.
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 *   This replacement is done automatically for the plural case.
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 * @param options
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 *   The options to pass to the Drupal.t() function.
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 * @return
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 *   A translated string.
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 */
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Drupal.formatPlural = function (count, singular, plural, args, options) {
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  var args = args || {};
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  args['@count'] = count;
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  // Determine the index of the plural form.
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  var index = Drupal.locale.pluralFormula ? Drupal.locale.pluralFormula(args['@count']) : ((args['@count'] == 1) ? 0 : 1);
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  if (index == 0) {
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    return Drupal.t(singular, args, options);
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  }
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  else if (index == 1) {
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    return Drupal.t(plural, args, options);
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  }
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  else {
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    args['@count[' + index + ']'] = args['@count'];
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    delete args['@count'];
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    return Drupal.t(plural.replace('@count', '@count[' + index + ']'), args, options);
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  }
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};
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/**
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 * Returns the passed in URL as an absolute URL.
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 *
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 * @param url
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 *   The URL string to be normalized to an absolute URL.
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 *
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 * @return
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 *   The normalized, absolute URL.
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 *
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 * @see https://github.com/angular/angular.js/blob/v1.4.4/src/ng/urlUtils.js
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 * @see https://grack.com/blog/2009/11/17/absolutizing-url-in-javascript
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 * @see https://github.com/jquery/jquery-ui/blob/1.11.4/ui/tabs.js#L53
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 */
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Drupal.absoluteUrl = function (url) {
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  var urlParsingNode = document.createElement('a');
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  // Decode the URL first; this is required by IE <= 6. Decoding non-UTF-8
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  // strings may throw an exception.
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  try {
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    url = decodeURIComponent(url);
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  } catch (e) {}
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  urlParsingNode.setAttribute('href', url);
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  // IE <= 7 normalizes the URL when assigned to the anchor node similar to
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  // the other browsers.
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  return urlParsingNode.cloneNode(false).href;
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};
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/**
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 * Returns true if the URL is within Drupal's base path.
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 *
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 * @param url
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 *   The URL string to be tested.
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 *
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 * @return
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 *   Boolean true if local.
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 *
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 * @see https://github.com/jquery/jquery-ui/blob/1.11.4/ui/tabs.js#L58
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 */
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Drupal.urlIsLocal = function (url) {
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  // Always use browser-derived absolute URLs in the comparison, to avoid
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  // attempts to break out of the base path using directory traversal.
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  var absoluteUrl = Drupal.absoluteUrl(url);
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  var protocol = location.protocol;
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  // Consider URLs that match this site's base URL but use HTTPS instead of HTTP
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  // as local as well.
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  if (protocol === 'http:' && absoluteUrl.indexOf('https:') === 0) {
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    protocol = 'https:';
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  }
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  var baseUrl = protocol + '//' + location.host + Drupal.settings.basePath.slice(0, -1);
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  // Decoding non-UTF-8 strings may throw an exception.
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  try {
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    absoluteUrl = decodeURIComponent(absoluteUrl);
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  } catch (e) {}
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  try {
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    baseUrl = decodeURIComponent(baseUrl);
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  } catch (e) {}
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  // The given URL matches the site's base URL, or has a path under the site's
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  // base URL.
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  return absoluteUrl === baseUrl || absoluteUrl.indexOf(baseUrl + '/') === 0;
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};
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/**
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 * Generate the themed representation of a Drupal object.
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 *
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 * All requests for themed output must go through this function. It examines
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 * the request and routes it to the appropriate theme function. If the current
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 * theme does not provide an override function, the generic theme function is
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 * called.
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 *
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 * For example, to retrieve the HTML for text that should be emphasized and
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 * displayed as a placeholder inside a sentence, call
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 * Drupal.theme('placeholder', text).
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 *
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 * @param func
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 *   The name of the theme function to call.
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 * @param ...
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 *   Additional arguments to pass along to the theme function.
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 * @return
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 *   Any data the theme function returns. This could be a plain HTML string,
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 *   but also a complex object.
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 */
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Drupal.theme = function (func) {
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  var args = Array.prototype.slice.apply(arguments, [1]);
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  return (Drupal.theme[func] || Drupal.theme.prototype[func]).apply(this, args);
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};
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/**
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 * Freeze the current body height (as minimum height). Used to prevent
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 * unnecessary upwards scrolling when doing DOM manipulations.
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 */
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Drupal.freezeHeight = function () {
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  Drupal.unfreezeHeight();
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  $('<div id="freeze-height"></div>').css({
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    position: 'absolute',
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    top: '0px',
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    left: '0px',
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    width: '1px',
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    height: $('body').css('height')
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  }).appendTo('body');
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};
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/**
380
 * Unfreeze the body height.
381
 */
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Drupal.unfreezeHeight = function () {
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  $('#freeze-height').remove();
384
};
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/**
387
 * Encodes a Drupal path for use in a URL.
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 *
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 * For aesthetic reasons slashes are not escaped.
390
 */
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Drupal.encodePath = function (item, uri) {
392
  uri = uri || location.href;
393
  return encodeURIComponent(item).replace(/%2F/g, '/');
394
};
395
396
/**
397
 * Get the text selection in a textarea.
398
 */
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Drupal.getSelection = function (element) {
400
  if (typeof element.selectionStart != 'number' && document.selection) {
401
    // The current selection.
402
    var range1 = document.selection.createRange();
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    var range2 = range1.duplicate();
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    // Select all text.
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    range2.moveToElementText(element);
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    // Now move 'dummy' end point to end point of original range.
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    range2.setEndPoint('EndToEnd', range1);
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    // Now we can calculate start and end points.
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    var start = range2.text.length - range1.text.length;
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    var end = start + range1.text.length;
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    return { 'start': start, 'end': end };
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  }
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  return { 'start': element.selectionStart, 'end': element.selectionEnd };
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};
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/**
417
 * Add a global variable which determines if the window is being unloaded.
418
 *
419
 * This is primarily used by Drupal.displayAjaxError().
420
 */
421
Drupal.beforeUnloadCalled = false;
422
$(window).bind('beforeunload pagehide', function () {
423
    Drupal.beforeUnloadCalled = true;
424
});
425
426
/**
427
 * Displays a JavaScript error from an Ajax response when appropriate to do so.
428
 */
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Drupal.displayAjaxError = function (message) {
430
  // Skip displaying the message if the user deliberately aborted (for example,
431
  // by reloading the page or navigating to a different page) while the Ajax
432
  // request was still ongoing. See, for example, the discussion at
433
  // http://stackoverflow.com/questions/699941/handle-ajax-error-when-a-user-clicks-refresh.
434
  if (!Drupal.beforeUnloadCalled) {
435
    alert(message);
436
  }
437
};
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/**
440
 * Build an error message from an Ajax response.
441
 */
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Drupal.ajaxError = function (xmlhttp, uri, customMessage) {
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  var statusCode, statusText, pathText, responseText, readyStateText, message;
444
  if (xmlhttp.status) {
445
    statusCode = "\n" + Drupal.t("An AJAX HTTP error occurred.") +  "\n" + Drupal.t("HTTP Result Code: !status", {'!status': xmlhttp.status});
446
  }
447
  else {
448
    statusCode = "\n" + Drupal.t("An AJAX HTTP request terminated abnormally.");
449
  }
450
  statusCode += "\n" + Drupal.t("Debugging information follows.");
451
  pathText = "\n" + Drupal.t("Path: !uri", {'!uri': uri} );
452
  statusText = '';
453
  // In some cases, when statusCode == 0, xmlhttp.statusText may not be defined.
454
  // Unfortunately, testing for it with typeof, etc, doesn't seem to catch that
455
  // and the test causes an exception. So we need to catch the exception here.
456
  try {
457
    statusText = "\n" + Drupal.t("StatusText: !statusText", {'!statusText': $.trim(xmlhttp.statusText)});
458
  }
459
  catch (e) {}
460
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  responseText = '';
462
  // Again, we don't have a way to know for sure whether accessing
463
  // xmlhttp.responseText is going to throw an exception. So we'll catch it.
464
  try {
465
    responseText = "\n" + Drupal.t("ResponseText: !responseText", {'!responseText': $.trim(xmlhttp.responseText) } );
466
  } catch (e) {}
467
468
  // Make the responseText more readable by stripping HTML tags and newlines.
469
  responseText = responseText.replace(/<("[^"]*"|'[^']*'|[^'">])*>/gi,"");
470
  responseText = responseText.replace(/[\n]+\s+/g,"\n");
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  // We don't need readyState except for status == 0.
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  readyStateText = xmlhttp.status == 0 ? ("\n" + Drupal.t("ReadyState: !readyState", {'!readyState': xmlhttp.readyState})) : "";
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  // Additional message beyond what the xmlhttp object provides.
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  customMessage = customMessage ? ("\n" + Drupal.t("CustomMessage: !customMessage", {'!customMessage': customMessage})) : "";
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  message = statusCode + pathText + statusText + customMessage + responseText + readyStateText;
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  return message;
480
};
481
482
// Class indicating that JS is enabled; used for styling purpose.
483
$('html').addClass('js');
484
485
// 'js enabled' cookie.
486
document.cookie = 'has_js=1; path=/';
487
488
/**
489
 * Additions to jQuery.support.
490
 */
491
$(function () {
492
  /**
493
   * Boolean indicating whether or not position:fixed is supported.
494
   */
495
  if (jQuery.support.positionFixed === undefined) {
496
    var el = $('<div style="position:fixed; top:10px" />').appendTo(document.body);
497
    jQuery.support.positionFixed = el[0].offsetTop === 10;
498
    el.remove();
499
  }
500
});
501
502
//Attach all behaviors.
503
$(function () {
504
  Drupal.attachBehaviors(document, Drupal.settings);
505
});
506
507
/**
508
 * The default themes.
509
 */
510
Drupal.theme.prototype = {
511
512
  /**
513
   * Formats text for emphasized display in a placeholder inside a sentence.
514
   *
515
   * @param str
516
   *   The text to format (plain-text).
517
   * @return
518
   *   The formatted text (html).
519
   */
520
  placeholder: function (str) {
521
    return '<em class="placeholder">' + Drupal.checkPlain(str) + '</em>';
522
  }
523
};
524
525
})(jQuery);