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update web view with default call handler

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This commit is contained in:
Xinlei(Ryan) Pan 2020-04-01 12:59:54 -04:00
parent 1681048279
commit bfe706908f
1 changed files with 17 additions and 30 deletions
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47
MVMCoreUI/Atomic/Atoms/Views/WebView.swift
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@ -10,7 +10,9 @@ import UIKit
import WebKit
@objcMembers open class WebView: View, MVMCoreUIViewConstrainingProtocol {
let mvmWebViewMessageHandler = "mvmWebViewMessageHandler"
public let loadingSpinner = MFLoadingSpinner(frame: .zero)
var delegateObject: MVMCoreUIDelegateObject?
@ -25,7 +27,7 @@ import WebKit
override open func setupView() {
super.setupView()
let webView = createWebView(messageHandler: nil, jsScript: nil)
let webView = createWebView(messageHandler: mvmWebViewMessageHandler, jsScript: nil)
addSubview(webView)
NSLayoutConstraint.constraintPinSubview(toSuperview: webView)
self.webView = webView
@ -112,24 +114,16 @@ extension WebView : WKUIDelegate {
if !dynamicHeight {
return
}
if let _ = webviewModel?.jsScript {
/* evaluateJavaScript only works when webview contains userscrpt.
otherwise, it would return WKErrorDomain Code=4 "A JavaScript exception occurred"
*/
webView.evaluateJavaScript("document.readyState", completionHandler: { [weak self] (result, error) in
if result == nil || error != nil {
return
}
webView.evaluateJavaScript("document.body.scrollHeight", completionHandler: { (result, error) in
guard let height = result as? CGFloat else { return }
self?.webViewHeight?.constant = height
self?.delegateObject?.moleculeDelegate?.moleculeLayoutUpdated(self!)
})
/* was using "document.readyState" to check the state, while evaluateJavaScript "document.readyState",only works when webview contains userscrpt.otherwise, it would return WKErrorDomain Code=4 "A JavaScript exception occurred".
so webView.isLoading to check load finished state
*/
if !webView.isLoading {
webView.evaluateJavaScript("document.body.scrollHeight", completionHandler: { [weak self] (result, error) in
guard let self = self, let height = result as? CGFloat else { return }
self.webViewHeight?.constant = height
self.delegateObject?.moleculeDelegate?.moleculeLayoutUpdated(self)
})
} else {
//get webview's content viewheight when no javescript setup
self.webViewHeight?.constant = webView.scrollView.contentSize.height
self.delegateObject?.moleculeDelegate?.moleculeLayoutUpdated(self)
}
}
@ -163,21 +157,14 @@ extension WebView : WKNavigationDelegate {
// MARK: - WKScriptMessageHandler
extension WebView: WKScriptMessageHandler {
public func userContentController(_ userContentController: WKUserContentController, didReceive message: WKScriptMessage) {
if message.name == callHandlerName, let text = message.body as? String {
if message.name == mvmWebViewMessageHandler, let actionMap = message.body as? [AnyHashable: Any] {
/*
receiving JavaScript func webkit.messageHandlers.{callHandler}.postMessage(body);
if body is dictionary string
if body is dictionary
MVMCoreActionHanlder handleAction
*/
if let data = text.data(using: .utf8) {
do {
let actionMap = try JSONSerialization.jsonObject(with: data, options: []) as? [String: Any]
MVMCoreActionHandler.shared()?.handleAction(with: actionMap, additionalData: nil, delegateObject: self.delegateObject)
} catch {
// if post message is not dictionary string
print(error.localizedDescription)
}
}
MVMCoreActionHandler.shared()?.handleAction(with: actionMap, additionalData: nil, delegateObject: self.delegateObject)
}
}
}