[3283] in java-interest
Re: dialogs, applets, and frames
daemon@ATHENA.MIT.EDU (Ed Anuff)
Mon Nov 6 10:14:52 1995
Date: Sun, 5 Nov 1995 21:31:19 -0800
To: java-interest@java.sun.com
From: edanuff@protagonist.com (Ed Anuff)
>> To create a new Dialog, you have to have a Frame argument for that
>> dialog to attach to. Does this mean I can only have dialogs for
>> actual popup windows -- not applets? Applets aren't frames.
>
>I believe that you should be able to follow your parent chain up until
>you get a null. The last parent you get before the null should be a
>top level frame that you can associate your dialog with.
This is what I use to find a component's frame. It works in appletviewer
and Netscape 2.0b2, but I don't know whether there is always a top level
frame.
class ComponentUtil {
public static Frame getFrame(Component theComponent) {
Component currParent = theComponent;
Frame theFrame = null;
while (currParent != null) {
if (currParent instanceof Frame) {
theFrame = (Frame)currParent;
break;
}
currParent = currParent.getParent();
}
return theFrame;
}
}
You can then use something like this to find the frame and create a dialog:
Frame theFrame = ComponentUtil.getFrame(this);
FileDialog theDialog = new FileDialog(theFrame, "test");
theDialog.show();
Hope this helps,
Ed
Ed Anuff
Protagonist Interactive
edanuff@protagonist.com
http://www.protagonist.com/
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