public static async Task <SizeI> WebViewContentSizeAsync(this Windows.UI.Xaml.Controls.WebView webView)
{
var widthString = await webView.InvokeScriptAsync("eval", new[] { "document.body.scrollWidth.toString()" });
if (!int.TryParse(widthString, out int contentWidth))
{
throw new Exception(string.Format("failure/width:{0}", widthString));
}
Debug.WriteLine("elementHeight = " + webView.Height);
//var rect = await webView.InvokeScriptAsync("pizzx", new[] { "document.getElementById( 'rasta' ).clientHeight.toString()" });
// ask the content its height
//var heightString = await webView.InvokeScriptAsync("eval", new[] { "document.documentElement.scrollHeight.toString()" });
//var heightString = await webView.InvokeScriptAsync("eval", new[] { "document.body.scrollHeight.toString()" });
//var heightString = await webView.InvokeScriptAsync("eval", new[] { "document.documentElement.getBoundingClientRect().height.toString()" });
//var heightString = await webView.InvokeScriptAsync("eval", new[] { "self.innerHeight.toString()" });
//var heightString = await webView.InvokeScriptAsync("eval", new[] { "document.body.offsetHeight.toString()" });
var heightString = await webView.InvokeScriptAsync("eval", new[] { "Math.max(document.body.scrollHeight, document.body.offsetHeight, document.documentElement.clientHeight, document.documentElement.scrollHeight ).toString()" });//, document.documentElement.offsetHeight ).toString()" });
if (!int.TryParse(heightString, out int contentHeight))
{
throw new Exception(string.Format("failure/height:{0}", heightString));
}
return(new SizeI(contentWidth, contentHeight));
}
public static async Task <SizeI> WebViewContentSizeAsync(this Windows.UI.Xaml.Controls.WebView webView)
{
int contentWidth = 72 * 8;
int contentHeight = 72 * 10;
try
{
var widthString = await webView.InvokeScriptAsync("eval", new[] { "document.body.scrollWidth.toString()" });
int.TryParse(widthString, out contentWidth);
Debug.WriteLine("elementHeight = " + webView.Height);
//var rect = await webView.InvokeScriptAsync("pizzx", new[] { "document.getElementById( 'rasta' ).clientHeight.toString()" });
// ask the content its height
//var heightString = await webView.InvokeScriptAsync("eval", new[] { "document.documentElement.scrollHeight.toString()" });
//var heightString = await webView.InvokeScriptAsync("eval", new[] { "document.body.scrollHeight.toString()" });
//var heightString = await webView.InvokeScriptAsync("eval", new[] { "document.documentElement.getBoundingClientRect().height.toString()" });
//var heightString = await webView.InvokeScriptAsync("eval", new[] { "self.innerHeight.toString()" });
//var heightString = await webView.InvokeScriptAsync("eval", new[] { "document.body.offsetHeight.toString()" });
var heightString = await webView.InvokeScriptAsync("eval", new[] { "Math.max(document.body.scrollHeight, document.body.offsetHeight, document.documentElement.clientHeight, document.documentElement.scrollHeight ).toString()" });//, document.documentElement.offsetHeight ).toString()" });
int.TryParse(heightString, out contentHeight);
}
catch (Exception e)
{
await Forms9Patch.Settings.RequestUserHelp(e);
}
return(new SizeI(contentWidth, contentHeight));
}
public static async Task <SizeI> WebViewContentSizeAsync(this Windows.UI.Xaml.Controls.WebView webView, int depth = 0, [System.Runtime.CompilerServices.CallerMemberName] string callerName = null)
{
if (webView is null)
{
await Forms9Patch.Debug.RequestUserHelp(null, "webView is null.");
}
int contentWidth = 72 * 8;
int contentHeight = 72 * 10;
if (depth > 50)
{
return(new SizeI(contentWidth, contentHeight));
}
if (depth > 0)
{
await Task.Delay(100);
}
int line = P42.Utils.ReflectionExtensions.CallerLineNumber();
try
{
line = P42.Utils.ReflectionExtensions.CallerLineNumber();
var widthString = await webView.InvokeScriptAsync("eval", new[] { "document.body.scrollWidth.toString()" });
line = P42.Utils.ReflectionExtensions.CallerLineNumber();
int.TryParse(widthString, out contentWidth);
line = P42.Utils.ReflectionExtensions.CallerLineNumber();
System.Diagnostics.Debug.WriteLine("elementHeight = " + webView.Height);
//var rect = await webView.InvokeScriptAsync("pizzx", new[] { "document.getElementById( 'rasta' ).clientHeight.toString()" });
// ask the content its height
//var heightString = await webView.InvokeScriptAsync("eval", new[] { "document.documentElement.scrollHeight.toString()" });
//var heightString = await webView.InvokeScriptAsync("eval", new[] { "document.body.scrollHeight.toString()" });
//var heightString = await webView.InvokeScriptAsync("eval", new[] { "document.documentElement.getBoundingClientRect().height.toString()" });
//var heightString = await webView.InvokeScriptAsync("eval", new[] { "self.innerHeight.toString()" });
//var heightString = await webView.InvokeScriptAsync("eval", new[] { "document.body.offsetHeight.toString()" });
line = P42.Utils.ReflectionExtensions.CallerLineNumber();
var heightString = await webView.InvokeScriptAsync("eval", new[] { "Math.max(document.body.scrollHeight, document.body.offsetHeight, document.documentElement.clientHeight, document.documentElement.scrollHeight ).toString()" });//, document.documentElement.offsetHeight ).toString()" });
line = P42.Utils.ReflectionExtensions.CallerLineNumber();
int.TryParse(heightString, out contentHeight);
line = P42.Utils.ReflectionExtensions.CallerLineNumber();
}
catch (Exception e)
{
//await Forms9Patch.Debug.RequestUserHelp(e, "line = " + line + ", callerName=["+callerName+"]");
System.Diagnostics.Debug.WriteLine("UwpWebViewExtensions.WebViewContentSizeAsync FAIL");
return(await WebViewContentSizeAsync(webView, depth + 1, callerName));
}
return(new SizeI(contentWidth, contentHeight));
}
public static async Task <SizeI> WebViewContentSizeAsync(this Windows.UI.Xaml.Controls.WebView webView)
{
var widthString = await webView.InvokeScriptAsync("eval", new[] { "document.body.scrollWidth.toString()" });
if (!int.TryParse(widthString, out int contentWidth))
{
throw new Exception(string.Format("failure/width:{0}", widthString));
}
// ask the content its height
var heightString = await webView.InvokeScriptAsync("eval", new[] { "document.body.scrollHeight.toString()" });
if (!int.TryParse(heightString, out int contentHeight))
{
throw new Exception(string.Format("failure/height:{0}", heightString));
}
return(new SizeI(contentWidth, contentHeight));
}
public WebContentFetcher()
{
WebViewInstance = new Windows.UI.Xaml.Controls.WebView();
//WebViewInstance.Visibility = Windows.UI.Xaml.Visibility.Collapsed;
WebViewInstance.NavigationStarting +=
async(sender, e) =>
{
Debug.WriteLine("Starting NavigationStarting");
Navigating = true;
await Task.Delay(4000);
if (Navigating)
{
Debug.WriteLine("Time exceeds");
e.Cancel = true;
Navigating = false;
Fetching = false;
HtmlContent = "";
}
Debug.WriteLine("End NavigationStarting");
};
WebViewInstance.NavigationCompleted +=
async(sender, e) =>
{
Debug.WriteLine("Starting NavigationCompleted");
Navigating = false;
HtmlContent = await WebViewInstance.InvokeScriptAsync("eval", new string[1] {
"document.doctype"
});
HtmlContent += await WebViewInstance.InvokeScriptAsync("eval", new string[1] {
"document.documentElement.outerHTML"
});
if (!e.IsSuccess)
{
await Task.Delay(500);
}
Fetching = false;
Debug.WriteLine("End NavigationCompleted");
};
}
public static void EvalJS(WebBrowser browser, string js)
{
try
{
#if MAST_PHONE
browser.InvokeScript("eval", new string[] { js });
#elif MAST_STORE
await browser.InvokeScriptAsync("eval", new string[] { js });
#endif
}
catch (Exception ex)
{
System.Diagnostics.Debug.WriteLine("EvalJS:" + ex.Message);
// TODO: Bubble this up.
}
}
private async void WebView_NavigationCompleted(Windows.UI.Xaml.Controls.WebView sender, Windows.UI.Xaml.Controls.WebViewNavigationCompletedEventArgs args)
{
string docClickScript = @"if (document.addEventListener) {" +
"document.addEventListener(\"click\", PageClicked, false);" +
"} else {" +
"document.attachEvent('onclick', PageClicked);" +
"} " +
"function PageClicked(event){" +
"var pointX = event.clientX;" +
"var pointY = event.clientY;" +
" window.external.notify('tap:' + pointX + ':' + pointY);" +
"}";
await sender.InvokeScriptAsync("eval", new string[] { docClickScript }); //set event 'click' on page
RingContentVisibility = false;
RingText = screeningText;
}
public static async Task <string> GetHtml(this Windows.UI.Xaml.Controls.WebView webView)
{
string html = await webView.InvokeScriptAsync("eval", new string[] { "document.documentElement.outerHTML;" });
return(html);
}
public static void EvalJS(WebBrowser browser, string js)
{
try
{
#if MAST_PHONE
browser.InvokeScript("eval", new string[] { js });
#elif MAST_STORE
await browser.InvokeScriptAsync("eval", new string[] { js });
#endif
}
catch (Exception ex)
{
System.Diagnostics.Debug.WriteLine("EvalJS:" + ex.Message);
// TODO: Bubble this up.
}
}
private static async void Browser_NavigationCompleted(Windows.UI.Xaml.Controls.WebView sender, Windows.UI.Xaml.Controls.WebViewNavigationCompletedEventArgs args)
{
await sender.InvokeScriptAsync("eval", new[] { DisableScrollingJs });
}