Summary:
@public
We can't dynamically link `WebKit` because doing so will impact cold start of all our Apps.
This diff includes a few changes:
1. Weakly link the `WebKit` framework in the `ReactInternal` library, so that the compiler doesn't die when it encounters a WebKit symbol.
2. Undo dynamic linking of WebKit in Catalyst.
3. Undo dynamic linking of WebKit in AdsManager
4. Before the first `WKWebView` is instantiated, dynamically load the `WebKit` framework.
The end result of these changes is that WebKit will be loaded only when it's going to be used.
Reviewed By: mmmulani
Differential Revision: D6564328
fbshipit-source-id: a45a44e774d0c61c1fb578a6fa3d16bb08f68ac9
Summary:
@public
This diff introduces two new props:
1. **automaticallyAdjustContentInsets**: Controls whether to adjust the content inset for web views that are placed behind a navigation bar, tab bar, or toolbar. The default value is true.
1. **contentInset**: The amount by which the web view content is inset from the edges of the scroll view. Defaults to {top: 0, left: 0, bottom: 0, right: 0}.
**Note:** There're some inconsistencies between how `UIWebView` and `WKWebView` render web pages with respect to the `contentInset` property. These two videos illustrate the problem:
**UIWebView**
[[ P58674349 | Playground.js ]]
https://pxl.cl/9R9V
**WKWebView**
[[ P58674348 | Playground.js ]]
https://pxl.cl/9R9W
Here's a stack overflow answer describing the problem: https://stackoverflow.com/a/35472603.
Reviewed By: shergin
Differential Revision: D6432181
fbshipit-source-id: aee6dac65d28435381ebec90519474b4707c7bab
Summary:
@public
This diff implements background colors for the `RCTWKWebView` component by proxying the background color prop to the underlying `WKWebView` and its underlying `UIScrollView`.
There's few differences between `backgroundColor` in `RCTWebView` and `RCTWKWebView` implementations:
1. With `UIWebView,` the background color gets applied after the page loads. With `WKWebView`, this isn't necessarily true. This results in a white flicker on solid backgrounds because sometimes, the background color is set before the page loads. This video illustrates the problem: https://our.intern.facebook.com/intern/px/p/9QBH
1. As far as I can tell, `WKWebView` doesn't handle transparent backgrounds correctly. Either that, or I could be setting the background color incorrectly. I set the background color to `rgba(1, 1, 1, 0.5)` and recorded how both `RCTWebView` and `RCTWKWebView` render. These two videos indicate the differences:
**RCTWebView: Lighter background**
https://pxl.cl/9R13
**RCTWKWebView: Darker background**
https://pxl.cl/9R1b
I tried to replicate this on the web. According to [[ https://our.intern.facebook.com/intern/fiddle/zCHu/ | this fiddle ]], `RCTWebView` is correct. Clearly, RCTWKWebView is rendering transparent backgrounds a bit darker than necessary. This doesn't seem simple to debug, so I've created a task to document this work: T23815343. I'll get to it eventually.
Reviewed By: shergin
Differential Revision: D6398209
fbshipit-source-id: 1812cb68133bc18a3278f6b328d7b085362528b0
Summary:
When text is rendered in `WKWebView` WebKit component, the component itself can detect things like phone numbers, flight numbers, links, etc. and render them with additional functionality.
For example, when the text `apple.com` is detected, if the `link` data detector type is enabled, the web view will actually render a link that takes the user to the Apple home page.
In this diff, I implement the `dataDetectorTypes` prop. The data detector types supported are:
1. phoneNumber
1. link
1. address
1. calendarEvent
1. trackingNumber
1. flightNumber
1. lookupSuggestion
These enums are documented in the [[ https://developer.apple.com/documentation/webkit/wkdatadetectortypes | WKDataDetectorTypes docs ]].
Reviewed By: shergin
Differential Revision: D6392546
fbshipit-source-id: 4dd373f0ac52f898163cd959eeef6672e55b42a6
Summary:
HTML video elements can have the `autoplay` attribute, which forces them to play automatically whenever they load on the page.
In this diff, I introduce a new prop `mediaPlaybackRequiresUserAction`, which allows us to control whether video or audio element autoplays even when `autoplay` is set.
Reviewed By: shergin
Differential Revision: D6382256
fbshipit-source-id: 617508653910d600bc43f7f68c6dfd17ab1b6dd8
Summary:
For iPhones with small screen sizes (e.g: iPhone 5s), inside the `<WKWebView/>` component, videos will play in fullscreen mode. In this diff, I introduce a prop called `allowsInlineMediaPlayback` that when set to true, will allow videos to play inline.
**Note:** For videos to play inline, the HTML video element must also have a `playsinline` attribute on it.
Reviewed By: shergin
Differential Revision: D6379770
fbshipit-source-id: a0130720ffede6c24a90cad0c97a75b657d77017
Summary:
@public
This diff introduces the native backend for a new WKWebView prop: `onShouldStartLoadWithRequest`.
In the final component, the behaviour will be as follows: Whenever the user navigates around in the web view, we call `onShouldStartLoadWithRequest` with the navigation event. If `onShouldStartLoadWithRequest` returns `true`, we continue the navigation. Otherwise, we abort it.
Reviewed By: shergin
Differential Revision: D6370317
fbshipit-source-id: e3cdd7e2a755125aebdb6df67e7b39116228bdfb
Summary:
@public
This diff implements the `reload` and `stopLoading` methods for `WKWebView`. Their functionality is self-explanatory.
Reviewed By: shergin
Differential Revision: D6369292
fbshipit-source-id: ba176f4406e0a67606406f36dd66f7615f4796c3
Summary:
@public
This diff implements the `goForward` and `goBack` methods on `WKWebView`.
1. `goForward` moves the web view one screen forward in the browser history.
1. `goBack` moves the web view one screen back in the browser history.
Reviewed By: shergin
Differential Revision: D6367495
fbshipit-source-id: e100ca00e92a6eaa30d2af1af642ba79a9c9feae
Summary:
@public
This diff introduces a method called `injectJavaScript(script)` on the React Native `<WKWebView/>` component. When called with a string, it evaluates that string as JavaScript within the web view.
Reviewed By: shergin
Differential Revision: D6367445
fbshipit-source-id: f68afeff42535dc991747f96a63f3c956faf13d3
Summary:
@public
The content that renders within the `WKWebView` instance actually renders inside a `UIScrollView`. On that scroll view, we can adjust the `decelerationRate`, which controls how fast the view stops scrolling after the user lets go while scrolling.
In this diff, I implemented the `decelerationRate` prop for `WKWebView`, which gets forwarded to the `UIScrollView` instance underlying the web view.
**Note:** Even though we accept a floating point value for the deceleration rate, the native `UIScrollView` component only allows two inputs:
1. `UIScrollViewDecelerationRateNormal`: 0.998
2. `UIScrollViewDecelerationRateFast`: 0.99
As far as I know, it seems to just round up to the nearest valid `CGFloat` (or down if number > 0.998), for any invalid numbers.
Reviewed By: mmmulani
Differential Revision: D6307262
fbshipit-source-id: 98c4395702415aa36519f9e9bd84f043be3a5881
Summary:
@public
The content of `WKWebView` renders within a scrollview. In this diff, I'm introducing the prop `scrollEnabled` to allow developers to control whether scrolling is enabled within the scroll view, or not.
Reviewed By: mmmulani
Differential Revision: D6307001
fbshipit-source-id: 5a199c6c3b8535e45a5a3cb6041e822bb7af2362
Summary:
@public
This diff implements message passing between the `WKWebView` and React Native. As with `<WebView/>`, we can only send/receive strings.
**Usage:**
1. Set `messagingEnabled` to `true`.
1. To send data from the web view to React Native, call `postMessage(data)` within the web view. This forces React Native to execute the `onMessage` prop on the `WKWebView` component. `onMessage` will be called with an event `e`, where `e.nativeEvent.data` will be the data you passed into `postMessage`.
1. To send data from React Native to the web view, call `UIManager.dispatchViewManagerCommand` to dispatch the `UIManager.RCTWKWebView.Commands.postMessage` command. Look at [[ https://fburl.com/u1wusf2f | this part of the existing `<WebView/>` ]] component for more details. After you make the call, React Native will dispatch a `'message'` event to the `document` object within the webview. You can listen to the event by doing `document.addEventListener('message', callback)`. Let the event dispatched be `e`. Then, `e.data` is the data you sent over from React Native.
[[ P58627181 | This Playground.js ]] illustrates the usage.
Reviewed By: shergin
Differential Revision: D6304850
fbshipit-source-id: 29075ef753296e9fb5a9cddeb1ad0f4ff7e28650
Summary:
@public
This diff includes four very straightforward changes:
1. Whenever the WebView starts loading, the `onLoadingStart` hook should be executed. The event passed into this hook should be decorated with the `navigationType`.
1. Whenever the WebView errors out while loading, the `onLoadingError` hook should be executed.
1. Whenever the WebView finishes loading (without any errors), the `onLoadingFinish` hook should be executed.
1. The serialized JavaScript passed into the `injectedJavaScript` prop should be executed when the WebView finishes loading. After execution finishes, the `onLoadingFinish` prop should be called with the serialized completion value of this JavaScript.
Reviewed By: shergin
Differential Revision: D6293532
fbshipit-source-id: 21407c766f73413046823ae605afc21e85cf9db6
Summary:
@public
`UIWebView` has been deprecated and replaced by `WKWebView`. This diff introduces a new component `WKWebView` that simply renders a `WKWebView` on iOS.
This is the first in the stack of many diffs that'll be required to fully replace `UIWebView` with `WKWebView` in the `<WebView/>` React Native component. Eventually, I hope to introduce a prop called `useWebKitImplementation`, which, when true, will force RN to use `WKWebView` instead of `UIWebView` for the `<WebView/>` component.
The only thing that's been implemented so far is the `source` property.
Reviewed By: mmmulani
Differential Revision: D6266100
fbshipit-source-id: 65862e34bd98db7fff0349cf26888afee43a56e4
Héctor Ramos
Ramanpreet Nara