Added support for the on-before-exit action

Author: Cody Antcliffe

README.md

@@ -123,12 +123,18 @@ Called after `on-change` when the user moves a step (backwards or
 forward) in the introduction. Gives the current step, the introJS
 component isntance, and the element of the current step.
 
-### on-exit (step, introJSComponent)
+### on-before-exit (step, introJSComponent)
 
 Called when the user quits the intro via the "Skip" button, hitting
 `escape`, or clicking outside the overlay. Given the current step, and
 the introJS component.
 
+### on-exit (step, introJSComponent)
+
+Called after `on-before-exit` when the user quits the intro via the "Skip" button, hitting
+`escape`, or clicking outside the overlay. Given the current step, and
+the introJS component.
+
 ### on-complete (step, introJSComponent)
 
 Called when the user finishes the intro by clicking "Done" or hitting

addon/components/intro-js.js

@@ -144,6 +144,7 @@ export default Component.extend({
     intro.oncomplete(bind(this, this._onComplete));
     intro.onexit(bind(this, this._onExit));
     intro.onskip(bind(this, this._onSkip));
+    intro.onbeforeexit(bind(this, this._onBeforeExit));
   },
 
   _setIntroJS(introJS){
@@ -185,6 +186,10 @@ export default Component.extend({
     this._sendAction('on-complete', [this.get('currentStep')]);
   },
 
+  _onBeforeExit() {
+    this._sendAction('on-before-exit', [this.get('currentStep'), this]);
+  },
+
   _setCurrentStep(step){
     this.set('currentStep', this._getStep(step));
   },

tests/integration/components/intro-js-test.js

@@ -73,7 +73,20 @@ module('Integration | Component | intro js', function(hooks) {
     });
   });
 
-  module('when existing', function() {
+  module('when exiting', function() {
+
+    test('fires the on-before-exit action', async function(assert) {
+      assert.expect(2);
+
+      this.set('onBeforeExit', (step) => {
+        assert.equal(step, this.steps[0])
+      });
+
+      await render(hbs`{{intro-js steps=steps start-if=true on-before-exit=(action onBeforeExit)}}`);
+
+      await introJSSkip();
+    });
+
     test('fires the on-exit action', async function(assert) {
       assert.expect(3);
 
@@ -84,7 +97,7 @@ module('Integration | Component | intro js', function(hooks) {
       await render(hbs`{{intro-js steps=steps start-if=true on-exit=(action myExit)}}`);
 
       await introJSSkip();
-    })
+    });
   });
 
   module('when skiping', function() {