#902644 follow-up: Committing missing JS file.

misc/machine-name.js

+// $Id$
+(function ($) {
+
+/**
+ * Attach the machine-readable name form element behavior.
+ */
+Drupal.behaviors.machineName = {
+  /**
+   * Attaches the behavior.
+   *
+   * @param settings.machineName
+   *   A list of elements to process, keyed by the HTML ID of the form element
+   *   containing the human-readable value. Each element is an object defining
+   *   the following properties:
+   *   - target: The HTML ID of the machine name form element.
+   *   - suffix: The HTML ID of a container to show the machine name preview in
+   *     (usually a field suffix after the human-readable name form element).
+   *   - label: The label to show for the machine name preview.
+   *   - replace_pattern: A regular expression (without modifiers) matching
+   *     disallowed characters in the machine name; e.g., '[^a-z0-9]+'.
+   *   - replace: A character to replace disallowed characters with; e.g., '_'
+   *     or '-'.
+   */
+  attach: function (context, settings) {
+    var self = this;
+    $.each(settings.machineName, function (source_id, options) {
+      var $source = $(source_id, context).addClass('machine-name-source');
+      var $target = $(options.target, context).addClass('machine-name-target');
+      var $suffix = $(options.suffix, context);
+      var $wrapper = $target.parents('.form-item:first');
+      // All elements have to exist.
+      if (!$source.length || !$target.length || !$suffix.length || !$wrapper.length) {
+        return;
+      }
+      // Skip processing upon a form validation error on the machine name.
+      if ($target.hasClass('error')) {
+        return;
+      }
+      // Hide the form item container of the machine name form element.
+      $wrapper.hide();
+      // Append the machine name preview to the source field.
+      if ($target.is(':disabled')) {
+        var machine = $target.val();
+      }
+      else {
+        var machine = self.transliterate($source.val(), options);
+      }
+      var $preview = $('<span class="machine-name-value">' + machine + '</span>');
+      $suffix.empty()
+        .append(' ').append('<span class="machine-name-label">' + options.label + ':</span>')
+        .append(' ').append($preview);
+
+      // Append a link to edit the machine name, if it is editable, and only if
+      // one of the following conditions is met:
+      // - the machine name is empty.
+      // - the human-readable name is equal to the existing machine name.
+      if (!$target.is(':disabled') && ($target.val() == '' || $target.val() == machine)) {
+        var $link = $('<span class="admin-link"><a href="#">' + Drupal.t('Edit') + '</a></span>')
+          .click(function () {
+            $wrapper.show();
+            $target.focus();
+            $suffix.hide();
+            $source.unbind('keyup.machineName');
+            return false;
+          });
+        $suffix.append(' ').append($link);
+
+        // Preview machine name in realtime when the human-readable name changes.
+        $source.bind('keyup.machineName change.machineName', function () {
+          machine = self.transliterate($(this).val(), options);
+          // Set the machine name to the transliterated value.
+          if (machine != options.replace && machine != '') {
+            $target.val(machine);
+            $preview.text(machine);
+            $suffix.show();
+          }
+          else {
+            $suffix.hide();
+            $target.val(machine);
+            $preview.empty();
+          }
+        });
+        // Initialize machine name preview.
+        $source.keyup();
+      }
+    });
+  },
+
+  /**
+   * Transliterate a human-readable name to a machine name.
+   *
+   * @param source
+   *   A string to transliterate.
+   * @param settings
+   *   The machine name settings for the corresponding field, containing:
+   *   - replace_pattern: A regular expression (without modifiers) matching
+   *     disallowed characters in the machine name; e.g., '[^a-z0-9]+'.
+   *   - replace: A character to replace disallowed characters with; e.g., '_'
+   *     or '-'.
+   *
+   * @return
+   *   The transliterated source string.
+   */
+  transliterate: function (source, settings) {
+    var rx = new RegExp(settings.replace_pattern, 'g');
+    return source.toLowerCase().replace(rx, settings.replace);
+  }
+};
+
+})(jQuery);

modules/system/system.admin.css

@@ -55,6 +55,16 @@ small .admin-link:after {
   content: ']';
 }
 
+/**
+ * Quick inline admin links.
+ */
+small .admin-link:before {
+  content: '[';
+}
+small .admin-link:after {
+  content: ']';
+}
+
 /**
  * Modules page.
  */

modules/system/system.module

@@ -359,6 +359,18 @@ function system_element_info() {
     '#theme' => 'textfield',
     '#theme_wrappers' => array('form_element'),
   );
+  $types['machine_name'] = array(
+    '#input' => TRUE,
+    '#default_value' => NULL,
+    '#required' => TRUE,
+    '#maxlength' => 64,
+    '#size' => 60,
+    '#autocomplete_path' => FALSE,
+    '#process' => array('form_process_machine_name', 'ajax_process_form'),
+    '#element_validate' => array('form_validate_machine_name'),
+    '#theme' => 'textfield',
+    '#theme_wrappers' => array('form_element'),
+  );
   $types['password'] = array(
     '#input' => TRUE,
     '#size' => 60,