可编辑的 WKWebView [英] Editable WKWebView
本文介绍了可编辑的 WKWebView的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我在WKWebView中显示.html和.xml文件.我将所有数据连接起来并显示在WKWevView中的字符串下面
I am displaying .html and .xml files in WKWebView. I am concatenating all the data and displaying below string in WKWevView
sourceWebView.loadHTMLString(sourceHtmlStr, baseURL: nil)
在加载内容后，我使用以下命令将Web视图设置为可编辑
I made my webview as editable using below, after loading the content i.e in
webView(_ webView:WKWebView，didFinish导航:WKNavigation！){}
webView(_ webView: WKWebView, didFinish navigation: WKNavigation!){}
singleWebView.evaluateJavaScript("document.body.setAttribute('contentEditable','true')") { (anyObj: Any?, error: Error?) in
if anyObj != nil{
print("AnyObj in jave script : \(anyObj!)")
}
if error != nil{
print("Error in Java script : \(error!)")
}
}
以上代码使WKWebView可编辑.但是我不确定如何保存编辑后的值.我遵循了链接，并在下面的代码中使用了
Above code made the WKWebView as editable. But i am not sure how to save the edited values. I followed Link and used below code
我在.js文件中有以下代码
i have below code in .js file
var richeditor = {};
var editor = document.getElementById("editor");
richeditor.insertText = function(text) {
editor.innerHTML = text;
window.webkit.messageHandlers.heightDidChange.postMessage(document.body.offsetHeight);
}
editor.addEventListener("input", function() {
window.webkit.messageHandlers.textDidChange.postMessage(editor.innerHTML);
}, false)
document.addEventListener("selectionchange", function() {
window.webkit.messageHandlers.heightDidChange.postMessage(document.body.offsetHeight);
}, false);
在WindowDidLoad中:
in WindowDidLoad:
guard let scriptPath = Bundle.main.path(forResource: "RichTextEditor", ofType: "js"),
let scriptContent = try? String(contentsOfFile: scriptPath, encoding: String.Encoding.utf8)
else {
print("Unable to find javscript for text editor")
return
}
singleWebView.configuration.userContentController.addUserScript(WKUserScript(source: scriptContent, injectionTime: .atDocumentEnd, forMainFrameOnly: true))
let configuration = singleWebView.configuration
[ShowPreviewWindowContoller.textDidChange, ShowPreviewWindowContoller.heightDidChange].forEach {
configuration.userContentController.add(WeakScriptMessageHandler(delegate: self), name: $0)
}
并在下面添加方法:
func userContentController(_ userContentController: WKUserContentController, didReceive message: WKScriptMessage) {
switch message.name {
case ShowPreviewWindowContoller.textDidChange:
guard let body = message.body as? String else { return }
delegate?.textDidChange(text: body)
case ShowPreviewWindowContoller.heightDidChange:
guard let height = message.body as? CGFloat else { return }
self.height = height > ShowPreviewWindowContoller.defaultHeight ? height + 30 : ShowPreviewWindowContoller.defaultHeight
delegate?.heightDidChange()
default:
break
}
}
这种实现方式不保存已编辑的数据.
This way of implementation is not saving the edited data.
在此还要注意的是，我没有编辑"html字符串中的元素.我不太确定html字符串中的所有元素是什么，因为文件不是一个常量，元素可以是任何东西.
Also to note here is i don't have "editor" element in the html string. i am not really sure what all elements the html string has as the file is not a constant one, elements can be anything.
很长的问题很抱歉.请让我知道如何执行此操作.编辑WKWebView，将编辑后的文本保存回去.另外，我将有很多像下面这样的字符串，我需要确保将其替换为确切的元素
Sorry for the long question. Please let me know on how to implement this. Editing WKWebView, saving the edited text back. Also i will be having lot of strings like below, i need to make sure i replace into exact element
<trans-unit id="0000000006" datatype="x-text/xml" restype="string">
<target>Some Text here</target>
</trans-unit>
<trans-unit id="0000000007" datatype="x-text/xml" restype="string">
<target>Some Text here</target>
</trans-unit>
我在HTML字符串下使用，请注意，我对html确实没有任何控制，我会显示用户选择的内容.
I am using below HTML string, Please note i really don't have any control on html, i display what ever user selects.
添加了修改后的htmlstring
Edit : Added modified htmlstring
<!doctype html>\n
<html>
\n
<head>
\n
<meta charset=\"UTF-8\">
\n<meta name=\"description\" content=\"AppleCare Training authored this course. If you use this course outside the AppleCare Training site, give credit to its author.\">\n<!-- If you are using an interaction to mark the page complete or if it is an AA page, change mark_complete to false -->\n
<meta name=\"template_version\" content=\"01.05.2015\">
\n
<meta name=\"page\" content=\" \" mark_complete=\"false\">
\n
<link href=\"https://idesk.corp.apple.com/training/ce/_common/css/sgt.css\" media=\"screen, projection\" rel=\"stylesheet\" type=\"text/css\"/>
\n<script>\n\tvar url = window.location.href;\n\tvar filename = \"\";\n\tvar is_local = url.substr(0,4);\n\tif(is_local==\"file\" || window.location.hostname === \"localhost\"){\n\t\t//Local Common Folder Location\n\t\tdocument.write(\'\\x3Cscript type=\"text/javascript\" src=\"http://localhost/_common/js/jquery.js\">\\x3C/script>\');\n\t\tdocument.write(\'\\x3Cscript type=\"text/javascript\" src=\"http://localhost/_common/js/ready.js\">\\x3C/script>\');\n\t}else{\n\t\tdocument.write(\'\\x3Cscript type=\"text/javascript\" src=\"/training/ce/_common/js/jquery.js\">\\x3C/script>\');\n\t\tdocument.write(\'\\x3Cscript type=\"text/javascript\" src=\"/training/ce/_common/js/ready.js\">\\x3C/script>\');\n\t}\n</script>\n\n
<title>
<target id=2>Key Terms and Concepts</target>
</title>
\n
</head>
\n\n
<body class=\"aa\">
\n\n\t\t\t<!-- BEGIN PAGE CONTENT -->\n\t
<div id=\"maincontent\">
\n
<div id=\"learningcontentdiv\">
\n
<div id=\"morelearningcontentdiv\"></div>
\n
</div>
\n\t\t\t
<div id=\"content\">
\n
<div id=\"close_aa_term\">
<target id=4>×</target>
</div>
\n
<h2>
<target id=6>Key Terms and Concepts</target>
</h2>
\n
<p>
<target id=8>You should already be familiar with all the terms in this module.</target>
\t
</p>
\n\t
</div>
\n
</div>
\n\n<!-- END PAGE CONTENT -->\n
</body>
\n
</html>
推荐答案
尝试使用此示例代码即可正常工作.
Tried with this sample code works as expected.
class ViewController: UIViewController, WKScriptMessageHandler {
var htmlString = """
<!doctype html>\n
<html>
\n
<head>
\n
<meta charset=\"UTF-8\">
\n<meta name=\"description\" content=\"AppleCare Training authored this course. If you use this course outside the AppleCare Training site, give credit to its author.\">\n<!-- If you are using an interaction to mark the page complete or if it is an AA page, change mark_complete to false -->\n
<meta name=\"template_version\" content=\"01.05.2015\">
\n
<meta name=\"page\" content=\" \" mark_complete=\"false\">
\n
<link href=\"https://idesk.corp.apple.com/training/ce/_common/css/sgt.css\" media=\"screen, projection\" rel=\"stylesheet\" type=\"text/css\"/>
\n<script>\n\tvar url = window.location.href;\n\tvar filename = \"\";\n\tvar is_local = url.substr(0,4);\n\tif(is_local==\"file\" || window.location.hostname === \"localhost\"){\n\t\t//Local Common Folder Location\n\t\tdocument.write(\'\\x3Cscript type=\"text/javascript\" src=\"http://localhost/_common/js/jquery.js\">\\x3C/script>\');\n\t\tdocument.write(\'\\x3Cscript type=\"text/javascript\" src=\"http://localhost/_common/js/ready.js\">\\x3C/script>\');\n\t}else{\n\t\tdocument.write(\'\\x3Cscript type=\"text/javascript\" src=\"/training/ce/_common/js/jquery.js\">\\x3C/script>\');\n\t\tdocument.write(\'\\x3Cscript type=\"text/javascript\" src=\"/training/ce/_common/js/ready.js\">\\x3C/script>\');\n\t}\n</script>\n\n
<title>
<target id=2>Key Terms and Concepts</target>
</title>
\n
</head>
\n\n
<body class=\"aa\">
\n\n\t\t\t<!-- BEGIN PAGE CONTENT -->\n\t
<div id=\"maincontent\">
\n
<div id=\"learningcontentdiv\">
\n
<div id=\"morelearningcontentdiv\"></div>
\n
</div>
\n\t\t\t
<div id=\"content\">
\n
<div id=\"close_aa_term\">
<target id=4>×</target>
</div>
\n
<h2>
<target id=6>Key Terms and Concepts</target>
</h2>
\n
<p>
<target id=8>You should already be familiar with all the terms in this module.</target>
\t
</p>
\n\t
</div>
\n
</div>
\n\n<!-- END PAGE CONTENT -->\n
</body>
\n
</html>
"""
var javaScript = """
var richeditor = {};
var editor = document.body;
function getActiveDiv() {
var sel = window.getSelection();
var range = sel.getRangeAt(0);
var node = document.createElement('span');
range.insertNode(node);
range = range.cloneRange();
range.selectNodeContents(node);
range.collapse(false);
sel.removeAllRanges();
sel.addRange(range);
var activeDiv = node.parentNode;
node.parentNode.removeChild(node);
return activeDiv;
}
richeditor.insertText = function(text) {
editor.innerHTML = text;
window.webkit.messageHandlers.heightDidChange.postMessage(document.body.offsetHeight);
}
editor.addEventListener("input", function() {
var activeElement = getActiveDiv()
window.webkit.messageHandlers.textDidChange.postMessage("activeElement ID = "+ activeElement.id + " and TEXT = " + activeElement.innerHTML);
}, false)
document.addEventListener("selectionchange", function() {
window.webkit.messageHandlers.heightDidChange.postMessage(document.body.offsetHeight);
}, false);
"""
override func viewDidLoad() {
super.viewDidLoad()
let config = WKWebViewConfiguration()
config.userContentController = WKUserContentController()
config.userContentController.add(self, name: "heightDidChange")
config.userContentController.add(self, name: "textDidChange")
config.userContentController.addUserScript(WKUserScript(source: javaScript, injectionTime: .atDocumentEnd, forMainFrameOnly: true))
let webView = WKWebView(frame: CGRect(x: 0, y: 0, width: 400, height: 400), configuration: config)
view.addSubview(webView)
webView.loadHTMLString(htmlString, baseURL: nil)
webView.navigationDelegate = self
}
func userContentController(_ userContentController: WKUserContentController, didReceive message: WKScriptMessage) {
print(message.name)
let body = message.body
print(body)
}
}
extension ViewController : WKNavigationDelegate {
func webView(_ webView: WKWebView, didFinish navigation: WKNavigation!){
webView.evaluateJavaScript("document.body.setAttribute('contentEditable','true')") { (anyObj: Any?, error: Error?) in
if anyObj != nil{
print("AnyObj in jave script : \(anyObj!)")
}
if error != nil{
print("Error in Java script : \(error!)")
}
}
}
}
这篇关于可编辑的 WKWebView的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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