✨Move Story Ads CTA to shadow

build-system/compile/bundles.config.extensions.json

@@ -454,6 +454,7 @@
       "cssBinaries": [
         "amp-story-auto-ads-ad-badge",
         "amp-story-auto-ads-attribution",
+        "amp-story-auto-ads-cta-button",
         "amp-story-auto-ads-inabox",
         "amp-story-auto-ads-shared"
       ]

extensions/amp-story-auto-ads/0.1/amp-story-auto-ads-cta-button.css

@@ -0,0 +1,60 @@
+/**
+ * Copyright 2021 The AMP HTML Authors. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS-IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/* If you are changing anything here that affects font, please update measurer
+ in story-ad-button-text-fitter.js */
+.i-amphtml-story-ad-link {
+  background-color: #ffffff !important;
+  border-radius: 20px !important;
+  box-sizing: border-box !important;
+  bottom: 32px !important;
+  box-shadow: 0px 2px 12px rgba(0, 0, 0, 0.16) !important;
+  color: #4285f4 !important;
+  font-family: 'Roboto', sans-serif !important;
+  font-weight: bold !important;
+  height: 36px !important;
+  letter-spacing: 0.2px !important;
+  line-height: 36px !important;
+  overflow: hidden !important;
+  /* no important on opacity b/c ff does not allow keyframes to override. */
+  opacity: 0;
+  padding: 0 10px !important;
+  position: absolute !important;
+  text-align: center !important;
+  text-decoration: none !important;
+  min-width: 120px !important;
+  max-width: calc(100vw - 64px);
+}
+
+[cta-active].i-amphtml-story-ad-link {
+  animation-delay: 100ms !important;
+  animation-duration: 300ms !important;
+  animation-timing-function: cubic-bezier(0.4, 0, 0.2, 1) !important;
+  animation-fill-mode: forwards !important;
+  animation-name: ad-cta !important;
+}
+
+@keyframes ad-cta {
+  from {
+    opacity: 0;
+    transform: scale(0);
+  }
+
+  to {
+    opacity: 1;
+    transform: scale(1);
+  }
+}

extensions/amp-story-auto-ads/0.1/amp-story-auto-ads-inabox.css

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
- amp-story-cta-layer {
+amp-story-cta-layer {
   display: block !important;
   position: absolute !important;
   top: 80% !important;

extensions/amp-story-auto-ads/0.1/amp-story-auto-ads-shared.css

@@ -16,54 +16,12 @@
 
 /* CSS shared between amp-story-auto-ads and inabox story ad rendering. */
 
-.i-amphtml-cta-container {
+.i-amphtml-story-ad-link-root {
+  all: initial !important;
+  color: initial !important;
   display: flex !important;
   flex-direction: column !important;
   align-items: center !important;
-}
-
-/* If you are changing anything here that affects font, please update measurer
- in story-ad-button-text-fitter.js */
- .i-amphtml-story-ad-link {
-  background-color: #FFFFFF !important;
-  border-radius: 20px !important;
-  box-sizing: border-box !important;
-  bottom: 32px !important;
-  box-shadow: 0px 2px 12px rgba(0, 0, 0, 0.16) !important;
-  color: #4285F4 !important;
-  font-family: 'Roboto', sans-serif !important;
-  font-weight: bold !important;
-  height: 36px !important;
-  letter-spacing: 0.2px !important;
-  line-height: 36px !important;
-  overflow: hidden !important;
-  /* no important on opacity b/c ff does not allow keyframes to override. */
-  opacity: 0;
-  padding: 0 10px !important;
-  position: absolute !important;
-  text-align: center !important;
-  text-decoration: none !important;
-  min-width: 120px !important;
-  max-width: calc(100vw - 64px);
-}
-
-amp-story-page[active] .i-amphtml-story-ad-link,
-.i-amphtml-inabox .i-amphtml-story-ad-link {
-  animation-delay: 100ms !important;
-  animation-duration: 300ms !important;
-  animation-timing-function: cubic-bezier(0.4, 0.0, 0.2, 1) !important;
-  animation-fill-mode: forwards !important;
-  animation-name: ad-cta !important;
-}
-
-@keyframes ad-cta {
-  from {
-    opacity: 0;
-    transform: scale(0);
-  }
-
-  to {
-    opacity: 1;
-    transform: scale(1);
-  }
+  height: 100% !important;
+  width: 100% !important;
 }

extensions/amp-story-auto-ads/0.1/amp-story-auto-ads.css

@@ -19,12 +19,6 @@
   transform: scale(1) translateX(-100%) translateY(200%) !important;
 }
 
-.i-amphtml-cta-container {
-  display: flex !important;
-  flex-direction: column !important;
-  align-items: center !important;
-}
-
 .i-amphtml-story-desktop-fullbleed .i-amphtml-cta-container {
   /* Ad will be 75vh, align bottom of container to bottom of ad. */
   bottom: 12.5vh !important;

extensions/amp-story-auto-ads/0.1/story-ad-page.js

@@ -16,6 +16,7 @@
 
 import {
   A4AVarNames,
+  START_CTA_ANIMATION_ATTR,
   createCta,
   getStoryAdMetadataFromDoc,
   getStoryAdMetadataFromElement,
@@ -111,6 +112,9 @@ export class StoryAdPage {
     /** @private {?Element} */
     this.adChoicesIcon_ = null;
 
+    /** @private {?Element} */
+    this.ctaAnchor_ = null;
+
     /** @private {?Document} */
     this.adDoc_ = null;
 
@@ -179,6 +183,9 @@ export class StoryAdPage {
    */
   toggleVisibility() {
     this.viewed_ = true;
+    this.ctaAnchor_ &&
+      toggleAttribute(this.ctaAnchor_, START_CTA_ANIMATION_ATTR);
+
     // TODO(calebcordry): Properly handle visible attribute for custom ads.
     if (this.adDoc_) {
       toggleAttribute(
@@ -407,6 +414,7 @@ export class StoryAdPage {
       uiMetadata
     ).then((anchor) => {
       if (anchor) {
+        this.ctaAnchor_ = anchor;
         // Click listener so that we can fire `story-ad-click` analytics trigger at
         // the appropriate time.
         anchor.addEventListener('click', () => {

extensions/amp-story-auto-ads/0.1/story-ad-ui.js

@@ -22,6 +22,7 @@ import {
   openWindowDialog,
 } from '../../../src/dom';
 import {createShadowRootWithStyle} from '../../amp-story/1.0/utils';
+import {CSS as ctaButtonCSS} from '../../../build/amp-story-auto-ads-cta-button-0.1.css';
 import {dev, user} from '../../../src/log';
 import {dict, map} from '../../../src/utils/object';
 
@@ -45,6 +46,8 @@ const CTA_META_PREFIX = 'amp-cta-';
 /** @const {string} */
 const A4A_VARS_META_PREFIX = 'amp4ads-vars-';
 
+export const START_CTA_ANIMATION_ATTR = 'cta-active';
+
 /** @enum {string} */
 export const A4AVarNames = {
   ATTRIBUTION_ICON: 'attribution-icon',
@@ -208,7 +211,6 @@ export function createCta(doc, buttonFitter, container, uiMetadata) {
   const ctaUrl = uiMetadata[A4AVarNames.CTA_URL];
   const ctaText = uiMetadata[A4AVarNames.CTA_TYPE];
 
-  // TODO(ccordry): Move button to shadow root.
   const a = createElementWithAttributes(
     doc,
     'a',
@@ -241,7 +243,18 @@ export function createCta(doc, buttonFitter, container, uiMetadata) {
 
     const ctaLayer = doc.createElement('amp-story-cta-layer');
     ctaLayer.className = 'i-amphtml-cta-container';
-    ctaLayer.appendChild(a);
+
+    const linkRoot = createElementWithAttributes(
+      doc,
+      'div',
+      dict({
+        'class': 'i-amphtml-story-ad-link-root',
+      })
+    );
+
+    createShadowRootWithStyle(linkRoot, a, ctaButtonCSS);
+
+    ctaLayer.appendChild(linkRoot);
     container.appendChild(ctaLayer);
     return a;
   });

extensions/amp-story-auto-ads/0.1/test/test-story-ad-page.js

@@ -215,6 +215,24 @@ describes.realWin('story-ad-page', {amp: true}, (env) => {
       storyAdPage.toggleVisibility();
       expect(altBody).not.to.have.attribute('amp-story-visible');
     });
+
+    it('should add/remove the cta-active signal', async () => {
+      const pageElement = storyAdPage.build();
+      // Stub delegateVideoAutoplay.
+      pageElement.getImpl = () => Promise.resolve(pageImplMock);
+      doc.body.appendChild(pageElement);
+
+      const ampAdElement = doc.querySelector('amp-ad');
+      ampAdElement.setAttribute('data-vars-ctaurl', 'https://cats.example');
+      ampAdElement.setAttribute('data-vars-ctatype', 'INSTALL');
+      await storyAdPage.maybeCreateCta();
+
+      const anchor = doc.querySelector('.i-amphtml-story-ad-link');
+      expect(anchor).to.exist;
+      expect(anchor).not.to.have.attribute('cta-active');
+      storyAdPage.toggleVisibility();
+      expect(anchor).to.have.attribute('cta-active');
+    });
   });
 
   describe('#maybeCreateCta', () => {
@@ -239,8 +257,7 @@ describes.realWin('story-ad-page', {amp: true}, (env) => {
 
       const ctaLayer = doc.querySelector('amp-story-cta-layer');
       expect(ctaLayer).to.exist;
-      const anchor = ctaLayer.firstChild;
-      expect(anchor.tagName).to.equal('A');
+      const anchor = ctaLayer.querySelector('a');
       expect(anchor.target).to.equal('_blank');
       expect(anchor.href).to.equal('https://amp.dev/');
       expect(anchor).to.have.attribute(
@@ -260,8 +277,7 @@ describes.realWin('story-ad-page', {amp: true}, (env) => {
 
       const ctaLayer = doc.querySelector('amp-story-cta-layer');
       expect(ctaLayer).to.exist;
-      const anchor = ctaLayer.firstChild;
-      expect(anchor.tagName).to.equal('A');
+      const anchor = ctaLayer.querySelector('a');
       expect(anchor.target).to.equal('_blank');
       expect(anchor.href).to.equal('https://amp.dev/');
       expect(anchor).to.have.attribute(

src/inabox/inabox-story-ad.js

@@ -16,6 +16,7 @@
 
 import {ButtonTextFitter} from '../../extensions/amp-story-auto-ads/0.1/story-ad-button-text-fitter';
 import {
+  START_CTA_ANIMATION_ATTR,
   createCta,
   getStoryAdMetadataFromDoc,
   maybeCreateAttribution,
@@ -41,7 +42,14 @@ export function maybeRenderInaboxAsStoryAd(ampdoc) {
 
   const buttonFitter = new ButtonTextFitter(ampdoc);
   const ctaContainer = doc.createElement('div');
-  createCta(doc, buttonFitter, ctaContainer, storyAdMetadata);
+
+  // TODO(ccordry): maybe use inOb for visible signal to fire animation
+  // across amp & inabox environments.
+  createCta(doc, buttonFitter, ctaContainer, storyAdMetadata).then(
+    (ctaAnchor) =>
+      ctaAnchor && ctaAnchor.setAttribute(START_CTA_ANIMATION_ATTR, '')
+  );
+
   doc.body.appendChild(ctaContainer);
 
   if (win.parent) {