lukt1 wrote:
On your class derived from nsIWebBrowserChrome take a look at
OnStateChange () and check your progressStateFlags for
STATE_STOP...that should be when the document has finished loading.
Then you get hold of the nsIDOMWindow by calling GetDOMWindow ()
from your aWebProgress that was passed in
nwIWebBrowserChrome::OnStateChange (). Then on the nsIDOMWindow you
just got, do a QueryInterface on it for your nsIDOMEventTarget. Once
you have that you call nsIDOMEventTarget::AddEventListener () for any
events you want to receive notifications for.
Make sure to implement nsIWebBrowserChrome::HandleEvent () so you can
handle the events you just told Gecko to send you.
Hope this helps.
Niky Williams
Hello!
Thanks to your help I can receive events in my gecko embed app.
But still I dont know how to read values which user writes in input
fields.
For example I have following input field:
<input type="text" id="edit1" value="2">
When I read it by:
nsCOMPtr<nsIDOMNode> domNode;
nsString nodeValue;
....
....
domNode->GetNodeValue(nodeValue);
I always receive default value.
How can I read current value from input field?
lukt1
Ya, I had that same problem too. I could never get what I needed from
the nsIDOMNode. I should probably look back into that, but here is how
I got around it with my current code...actually, there are 2 ways.
1) Through the nsIDOMEvent if you are wanting to read the value on an event
2) Through the nsIDOMElement if you are just wanting to poll the value.
Okay, to get it through the nsIDOMEvent, you need to get the ID of the
element that caused the event. You do this by calling
nsIDOMEvent::GetTarget () to get an nsIDOMEventTarget. Then you Query
the nsIDOMEventTarget for an nsIDOMHTMLElement. Once you have that,
call nsIDOMHTMLElement::GetId () to get the ID of the element that
caused the event.
Once you have this, you can use the next method for #1 and #2
Get the nsIWebBrowser from your nsIWebBrowserChrome derived class. Then
call nsIWebBrowser::GetContentDOMWindow () to get an nsIDOMWindow. Call
nsIDOMWindow::GetDocument () to get an nsIDOMDocument object. Then call
nsIDOMDocument::GetElementById () using the ID from the element you
want. This will get you an nsIDOMElement. Once you have that, query
the object for an nsIDOMHTMLInputElement. Now you can call either
nsIDOMHTMLInputElement::SetValue () or nsIDOMHTMLInputElement::GetValue
() to get/set what you need.
Hope this helps, and if anyone else knows an easier way, please say
something :-)
Niky Williams
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