[Popover] Fix bad positioning on IOS devices

src/Popover/Popover.js

@@ -6,6 +6,7 @@ import propTypes from '../utils/propTypes';
 import Paper from '../Paper';
 import throttle from 'lodash.throttle';
 import PopoverAnimationDefault from './PopoverAnimationDefault';
+import {isIOS, getOffsetTop} from '../utils/isIOS';
 
 class Popover extends Component {
   static propTypes = {
@@ -240,7 +241,11 @@ class Popover extends Component {
     };
 
     a.right = rect.right || a.left + a.width;
-    a.bottom = rect.bottom || a.top + a.height;
+    if (isIOS() && document.activeElement.tagName === 'INPUT') {
+      a.bottom = getOffsetTop(el) + a.height;
+    } else {
+      a.bottom = rect.bottom || a.top + a.height;
+    }
     a.middle = a.left + ((a.right - a.left) / 2);
     a.center = a.top + ((a.bottom - a.top) / 2);
 

src/Popover/Popover.spec.js

@@ -59,4 +59,67 @@ describe('<Popover />', () => {
       assert.strictEqual(layerWrapper.find(PopoverAnimationDefault).length, 1);
     });
   });
+
+  describe('IOS detection', () => {
+    // skip tests on PhantomJS because __defineGetter__ method seems not working
+    if (/PhantomJS/.test(window.navigator.userAgent)) return;
+    const getBoundingClientRect = () => ({
+      x: 10,
+      y: 10,
+      width: 10,
+      height: 10,
+      top: 10,
+      right: 10,
+      bottom: 10,
+      left: 10,
+    });
+    const el = {
+      offsetHeight: 10,
+      offsetWidth: 10,
+      offsetParent: {
+        offsetTop: 10,
+        offsetParent: null,
+      },
+      offsetTop: 10,
+      getBoundingClientRect,
+    };
+    /* eslint-disable max-len */
+    const userAgentsWithIOS = [
+      'Mozilla/5.0 (iPhone; CPU iPhone OS 7_0 like Mac OS X) AppleWebKit/537.51.1 (KHTML, like Gecko) Version/7.0 Mobile/11A465 Safari/9537.53',
+      'Mozilla/5.0 (iPad; CPU OS 7_0 like Mac OS X) AppleWebKit/537.51.1 (KHTML, like Gecko) Version/7.0 Mobile/11A465 Safari/9537.53',
+      'Mozilla/5.0 (iPod; U; CPU like Mac OS X; en) AppleWebKit/420.1 (KHTML, like Gecko) Version/3.0 Mobile/3A101a Safari/419.3',
+    ];
+    const nonIOSuserAgents = [
+      'Mozilla/5.0 (compatible; MSIE 9.0; Windows Phone OS 7.5; Trident/5.0; IEMobile/9.0)',
+      'Mozilla/5.0 (Linux; Android 4.4.4; Nexus 7 Build/KTU84Q) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/33.0.0.0 Safari/537.36',
+      'Mozilla/5.0 (BlackBerry; U; BlackBerry 9900; en) AppleWebKit/534.11+ (KHTML, like Gecko) Version/7.1.0.346 Mobile Safari/534.11+',
+    ];
+    /* eslint-enable max-len */
+
+    userAgentsWithIOS.forEach((agent) => {
+      it(`should use absolute positioning for ${agent}`, () => {
+        window.navigator.__defineGetter__('userAgent', () => agent); // eslint-disable-line no-underscore-dangle,max-len
+        const wrapper = mountWithContext(<Popover open={true} animated={true} />);
+        const result = wrapper.instance().getAnchorPosition(el);
+        const expected = {bottom: 30, top: 10, center: 20, left: 10, right: 10, middle: 10, height: 10, width: 10};
+        assert.deepEqual(result, expected);
+      });
+    });
+
+    nonIOSuserAgents.forEach((agent) => {
+      it(`should use normal positioning for ${agent}`, () => {
+        window.navigator.__defineGetter__('userAgent', () => agent); // eslint-disable-line no-underscore-dangle,max-len
+        const wrapper = mountWithContext(<Popover open={true} animated={true} />);
+        const result = wrapper.instance().getAnchorPosition(el);
+        const expected = {bottom: 10, top: 10, center: 10, left: 10, right: 10, middle: 10, height: 10, width: 10};
+        assert.deepEqual(result, expected);
+      });
+    });
+
+    after(() => {
+      window.navigator.__defineGetter__('userAgent', function getUserAgent() { // eslint-disable-line no-underscore-dangle,max-len
+        return `${this.appCodeName}/${this.appVersion}`;
+      });
+    });
+  });
 });

src/utils/isIOS.js

@@ -0,0 +1,20 @@
+/**
+* Returns a number of pixels from the top of the screen for given dom element.
+*
+* @param {object} dom element
+* @returns {number} A position from the top of the screen in pixels
+*/
+export const getOffsetTop = (elem) => {
+  let yPos = elem.offsetTop;
+  let tempEl = elem.offsetParent;
+
+  while (tempEl != null) {
+    yPos += tempEl.offsetTop;
+    tempEl = tempEl.offsetParent;
+  }
+
+  return yPos;
+};
+
+
+export const isIOS = () => /iPad|iPhone|iPod/.test(window.navigator.userAgent) && !window.MSStream;

src/utils/isIOS.spec.js

@@ -0,0 +1,44 @@
+/* eslint-env mocha */
+import {isIOS} from './isIOS';
+import {assert} from 'chai';
+
+describe('IOS detection helper', () => {
+  // skip tests on PhantomJS because __defineGetter__ method doesn't work
+  if (/PhantomJS/.test(window.navigator.userAgent)) return;
+
+  /* eslint-disable max-len */
+  const userAgentsWithIOS = [
+    'Mozilla/5.0 (iPhone; CPU iPhone OS 7_0 like Mac OS X) AppleWebKit/537.51.1 (KHTML, like Gecko) Version/7.0 Mobile/11A465 Safari/9537.53',
+    'Mozilla/5.0 (iPad; CPU OS 7_0 like Mac OS X) AppleWebKit/537.51.1 (KHTML, like Gecko) Version/7.0 Mobile/11A465 Safari/9537.53',
+    'Mozilla/5.0 (iPod; U; CPU like Mac OS X; en) AppleWebKit/420.1 (KHTML, like Gecko) Version/3.0 Mobile/3A101a Safari/419.3',
+  ];
+  const nonIOSuserAgents = [
+    'Mozilla/5.0 (compatible; MSIE 9.0; Windows Phone OS 7.5; Trident/5.0; IEMobile/9.0)',
+    'Mozilla/5.0 (Linux; Android 4.4.4; Nexus 7 Build/KTU84Q) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/33.0.0.0 Safari/537.36',
+    'Mozilla/5.0 (BlackBerry; U; BlackBerry 9900; en) AppleWebKit/534.11+ (KHTML, like Gecko) Version/7.1.0.346 Mobile Safari/534.11+',
+  ];
+  /* eslint-enable max-len */
+
+  userAgentsWithIOS.forEach((agent) => {
+    const input = document.createElement('INPUT');
+    document.body.appendChild(input);
+    input.focus();
+    it('should decect IOS', () => {
+      window.navigator.__defineGetter__('userAgent', () => agent); // eslint-disable-line no-underscore-dangle,max-len
+      assert.strictEqual(isIOS(), true);
+    });
+  });
+
+  nonIOSuserAgents.forEach((agent) => {
+    it('should NOT decect IOS', () => {
+      window.navigator.__defineGetter__('userAgent', () => agent); // eslint-disable-line no-underscore-dangle,max-len
+      assert.strictEqual(isIOS(), false);
+    });
+  });
+
+  after(() => {
+    window.navigator.__defineGetter__('userAgent', function getUserAgent() { // eslint-disable-line no-underscore-dangle,max-len
+      return `${this.appCodeName}/${this.appVersion}`;
+    });
+  });
+});