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+@ngdoc overview
+@name Tutorial: 10 - Event Handlers
+@description
+
+<ul doc:tutorial-nav="10"></ul>
+
+
+In this step, you will add a clickable phone image swapper to the phone details page.
+
+
+<doc:tutorial-instructions step="10"></doc:tutorial-instructions>
+
+
+The phone details view displays one large image of the current phone and several smaller thumbnail
+images. It would be great if we could replace the large image with any of the thumbnails just by
+clicking on the desired thumbnail image. Let's have a look at how we can do this with angular.
+
+The most important changes are listed below. You can see the full diff on {@link
+https://github.com/angular/angular-phonecat/compare/step-9...step-10
+GitHub}:
+
+
+## Controller
+
+__`app/js/controllers.js`:__
+<pre>
+...
+function PhoneDetailCtrl($xhr) {
+  var self = this;
+
+  $xhr('GET', 'phones/' + self.params.phoneId + '.json', function(code, response) {
+    self.phone = response;
+    self.mainImageUrl = response.images[0];
+  });
+
+  self.setImage = function(imageUrl) {
+    self.mainImageUrl = imageUrl;
+  }
+}
+
+//PhoneDetailCtrl.$inject = ['$xhr'];
+</pre>
+
+In the `PhoneDetailCtrl` controller, we created the `mainImageUrl` model property and set its
+default value to the first phone image url.
+
+We also created a `setImage` controller method to change the value of `mainImageUrl`.
+
+
+## Template
+
+__`app/partials/phone-detail.html`:__
+<pre>
+<img ng:src="{{mainImageUrl}}" class="phone"/>
+
+...
+
+<ul class="phone-thumbs">
+  <li ng:repeat="img in phone.images">
+    <img ng:src="{{img}}" ng:click="setImage(img)">
+  </li>
+</ul>
+...
+</pre>
+
+We bound the `ng:src` attribute of the large image to the `mainImageUrl` property.
+
+We also registered an {@link api/angular.directive.ng:click `ng:click`} handler with thumbnail
+images. When a user clicks on one of the thumbnail images, the handler will use the `setImage`
+controller method to change the value of the `mainImageUrl` property to the url of the thumbnail
+image.
+
+<img src="img/tutorial/tutorial_10-11_final.png">
+
+## Test
+
+To verify this new feature, we added two end-to-end tests. One verifies that the main image is set
+to the first phone image by default. The second test clicks on several thumbnail images and
+verifies that the main image changed appropriately.
+
+__`test/e2e/scenarios.js`:__
+<pre>
+...
+  describe('Phone detail view', function() {
+
+    beforeEach(function() {
+      browser().navigateTo('../../app/index.html#/phones/nexus-s');
+    });
+
+
+    it('should display the first phone image as the main phone image', function() {
+       expect(element('img.phone').attr('src')).toBe('img/phones/nexus-s.0.jpg');
+    });
+
+
+    it('should swap main image if a thumbnail image is clicked on', function() {
+      element('.phone-thumbs li:nth-child(3) img').click();
+      expect(element('img.phone').attr('src')).toBe('img/phones/nexus-s.2.jpg');
+
+      element('.phone-thumbs li:nth-child(1) img').click();
+      expect(element('img.phone').attr('src')).toBe('img/phones/nexus-s.0.jpg');
+    });
+  });
+});
+</pre>
+
+You can now refresh the browser tab with the end-to-end test runner to see the tests run, or you
+can see them running on {@link
+http://angular.github.com/angular-phonecat/step-8/test/e2e/runner.html
+angular's server}.
+
+# Experiments
+
+* Let's add a new controller method to `PhoneCatCtrl`:
+
+          this.hello = function(name) {
+              alert('Hello ' + (name || 'world') + '!');
+          }
+
+  and add:
+
+          <button ng:click="hello('Elmo')">Hello</button>
+
+  to the `index.html` template.
+
+  The controller methods are inherited between controllers/scopes, so you can use the same snippet
+in the `phone-list.html` template as well.
+
+* Move the `hello` method from `PhoneCatCtrl` to `PhoneListCtrl` and you'll see that the button
+declared in `index.html` will stop working, while the one declared in the `phone-list.html`
+template remains operational.
+
+
+# Summary
+
+With the phone image swapper in place, we're ready for {@link step_11 step 11} (the last step!) to
+learn an even better way to fetch data.
+
+
+<ul doc:tutorial-nav="10"></ul>