How get nsIView from a nsGenericElement

[hap497]

Hi,

If I have a pointer to nsGenericElement, how can I get a nsIView of
the element?
I have looked at nsGenericElement.h , but I can't find any method
which does it?
http://mxr.mozilla.org/mozilla1.9.1/source/content/base/src/nsGenericElement.h

Thank you.

[Boris Zbarsky]

Post by hap497
If I have a pointer to nsGenericElement, how can I get a nsIView of
the element?

Just based on the element, you can't. There may not be a view, or there
may be more than one.

What are you actually trying to do?

-Boris

[hap497]

Post by hap497
If I have a pointer to nsGenericElement, how can I get a nsIView of
the element?

Just based on the element, you can't.  There may not be a view, or there
may be more than one.
What are you actually trying to do?
-Boris

I am trying to emulate an user click event on html element like
anchor. So I am trying to call nsPresShell's HandleEvent method
HandleEvent(nsIView* aView, nsGUIEvent* aEvent,
nsEventStatus* aEventStatus);
http://mxr.mozilla.org/mozilla1.9.1/source/layout/base/nsPresShell.cpp#908

Since my input is an nsGenericElement (an anchor), I need to get a
nsIView to call this HandleEvent.

Thank you.

[Smaug]

Post by hap497

Post by Boris Zbarsky

Post by hap497
If I have a pointer to nsGenericElement, how can I get a nsIView of
the element?

Just based on the element, you can't. There may not be a view, or there
may be more than one.
What are you actually trying to do?
-Boris

I am trying to emulate an user click event on html element like
anchor. So I am trying to call nsPresShell's HandleEvent method
HandleEvent(nsIView* aView, nsGUIEvent* aEvent,
nsEventStatus* aEventStatus);
http://mxr.mozilla.org/mozilla1.9.1/source/layout/base/nsPresShell.cpp#908
Since my input is an nsGenericElement (an anchor), I need to get a
nsIView to call this HandleEvent.
Thank you.

Could you perhaps use trunk or 1.9.2 builds?
nsDOMWindowUtils::DispatchDOMEventViaPresShell might be useful for you.
It doesn't dispatch the event using PresShell::HandleEvent but
PresShell::HandleEventWithTarget.


-Olli

[hap497]

Post by Smaug

Post by hap497
If I have a pointer to nsGenericElement, how can I get a nsIView of
the element?

Just based on the element, you can't.  There may not be a view, or there
may be more than one.
What are you actually trying to do?
-Boris

I am trying to emulate an  user click event on html element like
anchor.  So I am trying to call nsPresShell's HandleEvent method
HandleEvent(nsIView*        aView, nsGUIEvent*     aEvent,
nsEventStatus*  aEventStatus);
http://mxr.mozilla.org/mozilla1.9.1/source/layout/base/nsPresShell.cp...
Since my input is an nsGenericElement (an anchor), I need to get a
nsIView to call this HandleEvent.
Thank you.

Could you perhaps use trunk or 1.9.2 builds?
nsDOMWindowUtils::DispatchDOMEventViaPresShell might be useful for you.
It doesn't dispatch the event using PresShell::HandleEvent but
PresShell::HandleEventWithTarget.
-Olli

I see a method HandleEventWithTarget in 1.9.1, are they the same?
http://mxr.mozilla.org/mozilla1.9.1/source/layout/base/nsPresShell.cpp#867

And how can I get nsIFrame from an nsGenericElement? I looked for it
in
http://mxr.mozilla.org/mozilla1.9.1/source/content/base/src/nsGenericElement.h
There are 2 methods: GetPrimaryFrame(); and GetStyledFrame();

Which one should I use?

Thank you.