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themes/bootstrap/js/misc/states.js

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+/**
+ * @file
+ * Extends core/misc/states.js.
+ */
+(function($) {
+
+  // Unbind core state.js from document first so we can then override below.
+  $(document).unbind('state:disabled');
+
+  /**
+   * Global state change handlers. These are bound to "document" to cover all
+   * elements whose state changes. Events sent to elements within the page
+   * bubble up to these handlers. We use this system so that themes and modules
+   * can override these state change handlers for particular parts of a page.
+   */
+  $(document).bind('state:disabled', function(e) {
+    // Only act when this change was triggered by a dependency and not by the
+    // element monitoring itself.
+    if (e.trigger) {
+      $(e.target)
+        .attr('disabled', e.value)
+        .closest('.form-item, .form-submit, .form-wrapper').toggleClass('form-disabled', e.value)
+        .find(':input').attr('disabled', e.value);
+
+      // Note: WebKit nightlies don't reflect that change correctly.
+      // See https://bugs.webkit.org/show_bug.cgi?id=23789
+    }
+  });
+
+})(jQuery);