Drupal 8.0.0 beta 12. More info: https://www.drupal.org/node/2514176

core/modules/contextual/js/models/StateModel.js

@@ -0,0 +1,128 @@
+/**
+ * @file
+ * A Backbone Model for the state of a contextual link's trigger, list & region.
+ */
+
+(function (Drupal, Backbone) {
+
+  "use strict";
+
+  /**
+   * Models the state of a contextual link's trigger, list & region.
+   *
+   * @constructor
+   *
+   * @augments Backbone.Model
+   */
+  Drupal.contextual.StateModel = Backbone.Model.extend(/** @lends Drupal.contextual.StateModel# */{
+
+    /**
+     * @type {object}
+     *
+     * @prop {string} title
+     * @prop {bool} regionIsHovered
+     * @prop {bool} hasFocus
+     * @prop {bool} isOpen
+     * @prop {bool} isLocked
+     */
+    defaults: /** @lends Drupal.contextual.StateModel# */{
+
+      /**
+       * The title of the entity to which these contextual links apply.
+       *
+       * @type {string}
+       */
+      title: '',
+
+      /**
+       * Represents if the contextual region is being hovered.
+       *
+       * @type {bool}
+       */
+      regionIsHovered: false,
+
+      /**
+       * Represents if the contextual trigger or options have focus.
+       *
+       * @type {bool}
+       */
+      hasFocus: false,
+
+      /**
+       * Represents if the contextual options for an entity are available to
+       * be selected (i.e. whether the list of options is visible).
+       *
+       * @type {bool}
+       */
+      isOpen: false,
+
+      /**
+       * When the model is locked, the trigger remains active.
+       *
+       * @type {bool}
+       */
+      isLocked: false
+    },
+
+    /**
+     * Opens or closes the contextual link.
+     *
+     * If it is opened, then also give focus.
+     *
+     * @return {Drupal.contextual.StateModel}
+     */
+    toggleOpen: function () {
+      var newIsOpen = !this.get('isOpen');
+      this.set('isOpen', newIsOpen);
+      if (newIsOpen) {
+        this.focus();
+      }
+      return this;
+    },
+
+    /**
+     * Closes this contextual link.
+     *
+     * Does not call blur() because we want to allow a contextual link to have
+     * focus, yet be closed for example when hovering.
+     *
+     * @return {Drupal.contextual.StateModel}
+     */
+    close: function () {
+      this.set('isOpen', false);
+      return this;
+    },
+
+    /**
+     * Gives focus to this contextual link.
+     *
+     * Also closes + removes focus from every other contextual link.
+     *
+     * @return {Drupal.contextual.StateModel}
+     */
+    focus: function () {
+      this.set('hasFocus', true);
+      var cid = this.cid;
+      this.collection.each(function (model) {
+        if (model.cid !== cid) {
+          model.close().blur();
+        }
+      });
+      return this;
+    },
+
+    /**
+     * Removes focus from this contextual link, unless it is open.
+     *
+     * @return {Drupal.contextual.StateModel}
+     */
+    blur: function () {
+      if (!this.get('isOpen')) {
+        this.set('hasFocus', false);
+      }
+      return this;
+    }
+
+  });
+
+})(Drupal, Backbone);