B4J Question Webview get result from click on a link

[TomDuncan]

Hi All,
I have a app that generates a web page locally.
I have Links inside this which I need too trigger events.
Can I find when a link has been pressed.
I have tested LocationChanged but no luck.
I just need to put in my own value in the href= area.
Then get this value
i.e.

<a href="$COMMENT$">comment</a><br>

Tom

 

[Erel]

LocationChanged should be raised. Though it is not so easy to work with this event as you cannot cancel it. You need to reload the original url each time.

 

[TomDuncan]

On my testing it was not raised.
But maybe because it is not a valid place to go to.
Will check if I can put in a marker on the page to jump to.
Tom

 

[TomDuncan]

Just did some more tests.
I added an anchor to send to the top of the file.
Any nothing works.
This web view uses LoadHtml( MY BUILT HTML FILE)

Is this an error with Loadhtml?

Tom

 

[Erel]

Check this example:

Sub Process_Globals
   Private fx As JFX
   Private MainForm As Form
   Private wv As WebView
End Sub

Sub AppStart (Form1 As Form, Args() As String)
   MainForm = Form1
   MainForm.Show
   wv.Initialize("wv")
   MainForm.RootPane.AddNode(wv, 10, 10, 300, 300)
   wv.LoadHtml($"<a href="http://www.example.com">link</a>"$)
End Sub

Sub wv_LocationChanged (Location As String)
   Log(Location)
   wv.LoadHtml($"<a href="http://www.example.com">link</a>"$)
End Sub

 

[TomDuncan]

Yep, that works.

The only difference with mine in that I have created the string then pass
That string to the loadhtml
What is the $ top and tail of the string.
I am still a newbie.

Tom

 

[Erel]

It doesn't matter whether you put the string directly or in a variable.

What is the $ top and tail of the string.

[B4X] Smart String Literal

 

[TomDuncan]

With your demo, can I catch the event before it executes the go to the location?

 

[Erel]

Please try it.

 

[TomDuncan]

Oops. Yes i did and it works.
Only as a link to a http not as an anchor.
So when I reload the page it reloads from the top.

Will I have to get the position before the action happens then move the cursor
To the old location.

Tom

 

[Erel]

It is not easy to work with this event as you need to reload the page. There is no simple way to get the current position. You will need to inject JavaScript for that.

 

[TomDuncan]

Thanks.
Will work out another way to do it.
Tom