Swift / iOS. This is an extention of the WKWebView that will allow the searching of a web page for a specific string.
It will hilight in yellow ( but you can change that in the JS code) all occurances of a search string in a UIWebView. Next, if you are using the previous/next features it will scroll to the next/previous occurance and hilight it in green ( again, you can change that color as well in the JS)
SearchWebView.js SearchWKWebView.swift
The WKWebView extention methods are pretty self explanitory
func highlightAllOccurencesOfString(string:String)
func handleSearchResultCount( completionHandler: @escaping (_ count:Int) -> Void )
func removeAllHighlights()
func searchNext()
func searchPrevious()Pretty straight forward except the handleSearchResultCount is a bit tricky. Because in Swift, when calling javascript in code it is done on a seperate thread, you will have to create a completion handler closure to get notified on when this call is completed...
The code here has a great example of how to do this in the view controller.
//get the count
//define completion handler closure for the count
let countCompletionHandler: (Int) -> Void = {
self.occurancesLabel.text = "\($0)"
print("count found : \($0)")
}
//get the count
webView.handleSearchResultCount( completionHandler: countCompletionHandler )Thats it!!! Pretty straight forward mothods to extend and use on WKWebView
Setting the hilight colors......
MIT open source...
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