Run script in HTML editor in WebView WP8.1

Question

I am developing an app in which I need to give HTML editing facility to the user. So I tried different HTML editors but finally TinyMCE was able to show controls for editing. But I am not able to set the contents of Editor. It gives Exception Exception
from HRESULT: 0x80020101. And I tried all different solutions but could not figure it out. Here is link to my project
    string tinyMice = "<script type='text/javascript'> function myfun() {tinymce.execCommand('mceInsertContent', false, getQueryStrings());}myfun()</script>";
                    await System.Threading.Tasks.Task.Delay(TimeSpan.FromSeconds(1));
                    await webview_demo.InvokeScriptAsync("eval", new string[] { tinyMice });
Can somebody help?

Answer 1

hey,
I am not sure what you exactly want to do but I took a look at the project you uploaded.
First of all, you better use the NavigationCompleted or
FrameNavigationCompleted event for executing onload functions.
I have no idea about the tinymce js plugin but here is what I did to create a similar scenario.
1) First, create a js function in the removeformat.html to return a string (replacing your getQueryStrings functions)
function returnMessageValue() {
return "Hello JS World";
2) then create a script notify event handler and wire it up to the page so we can get alerts from the html page loaded.
In NavigationCompleted event:
string result = await this.webview_demo.InvokeScriptAsync("eval", new string[] { "window.alert = function (AlertMessage) {window.external.notify(AlertMessage)}" });
this will notify the webview about window.alert's. So we subscribe to the Script notify event:
webview_demo.ScriptNotify += (sender, args) =>
MessageDialog m = new MessageDialog(args.Value);
m.ShowAsync();
and finally the code execution for our function:
await webview_demo.InvokeScriptAsync("eval", new[] { "window.alert(returnMessageValue())" });
// await webview_demo.InvokeScriptAsync("eval",
// new[] { "tinymce.execCommand(\"mceInsertContent\", false, getQueryStrings())" });
result:
hope it helps
Can Bilgin
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