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
The content that loads inside `WKWebView` renders within a `ScrollView`. Suppose the user pulls the page down when its top edge hits the top edge of the web view. Then, one of two things can happen as the user continues to pull the page down:
1. We let the page be pulled past the top edge of the web view.
1. We fix the page's vertical offset to 0 so that it doesn't move past the top edge of the web view.
The property that controls this behaviour is `<WKWebView bounces={true|false}/>`. In this diff, I implement it.
Reviewed By: mmmulani
Differential Revision: D6306866
fbshipit-source-id: 7763df78676215c3dd0bd7a029497a6eca1873ab
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
Ramanpreet Nara