I can get them as doubles fine dtde.getLocation.getX() but the JTree object
method getPathForLocation(int x,int y) requires the ints.
Here is what I am doing....
TreePath
myTreePath=myJTree.getPathForLocation((int)dtde.getLocation().getX(),(int)dtde.getLocation().getY());
Am I missing something here?
>>> "James Carman" <james@xxxxxxxxxxxxxxxxxxxx> 06/19/03 10:47AM >>>
You don't have to use them as doubles. Just use...
dtde.getLocation().x or dtde.getLocation().y
They're accessible fields. Not exactly the best encapsulation, but it gets
the job done. I have NO idea why they did that double vs. int thing! It's
ridiculous! The ints would get automagically converted to doubles wherever
needed.
----- Original Message -----
From: "Brian Engel" <BEngel@xxxxxxxxxxxxx>
To: <users@xxxxxxxxxx>
Sent: Thursday, June 19, 2003 10:38 AM
Subject: Re: [cinjug-users] JTree and DND
That's alright, I figured out what you meant in your first message :-)....
It kinda of works. The problem is that it isn't precise enough. i.e. If I
grab (in my example) grandchild1 by the uppermost left corner of the "leaf
icon" and drag it, the getPathForLocation() method thinks I am holding the
"Child1" node. I think this is because the getPathForLocation() method takes
ints and the DropTargetDragEvent returns doubles. So I have to "down" cast
them to ints.
There has to be an elegant solution to this, otherwise I don't see how you
can create a windows "explorer" type application in Java.
So I guess I'll keep reading the API! :-)
>>> "James Carman" <james@xxxxxxxxxxxxxxxxxxxx> 06/19/03 10:24AM >>>
Hey, Brian. Did that work for you? Sorry I was so short with my response,
but I was busy when I wrote it. Anyway, you can get the x,y locations from
the drag event. Then, you can ask the JTree what "path" is terminated at
that location. From there, you can get the node at the end of the path.
That should get you what you're looking for. Hope that helps. Good Luck!
JTree is tricky (at least for me, as I'm usually a server-side developer)!
----- Original Message -----
From: "Brian Engel" <BEngel@xxxxxxxxxxxxx>
To: <users@xxxxxxxxxx>
Sent: Thursday, June 19, 2003 9:06 AM
Subject: [cinjug-users] JTree and DND
I am trying to create a JTree which I can drag and drop one
DefaultMutableTreeNode on top of another (with hopes of actually moving it
there).
I have figured out how to create a class that implements DropTargetListener
and I can successfully "capture" events that JTree fires. What I want to
know is there a way to figure out what object (DefaultMutableTreeNode, in
this case) has been dropped on top of?
i.e. I have a simple JTree like this....
Root
|
?--Child1
| |----GrandChild1
|---Child2
I want to drag GrandChild1 and drop it on top of Root. I need to figure out
(through the listener I suppose) what object was dropped on top of what.
Primarily so I can rebuild the tree with GrandChild1 as a Child of Root.
Do this make any sense :-) ?
Any help would be appreciated.....
|