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Java Forum / GUI / September 2006drag and drop - JTree and JList
Does anyone have example of drag nad drop between JList and JTree? I would like to take some entry in list and drop in into one leaf on tree. The result is some message - I don't want to change anything in tree. I've doing it for some days and I have no idea to get it working. Can anybody help me with it? thanks in advance Mariusz mario@data.pl schrieb: > Does anyone have example of drag nad drop between JList and JTree? I > would like to take some entry in list and drop in into one leaf on > tree. The result is some message - I don't want to change anything in > tree. Have a look at here http://java.sun.com/docs/books/tutorial/uiswing/misc/dnd.html#complex Bye Michael > http://java.sun.com/docs/books/tutorial/uiswing/misc/dnd.html#complex I've looked there. It wasn't useful for me in my case :( Mariusz mario schrieb: >> http://java.sun.com/docs/books/tutorial/uiswing/misc/dnd.html#complex > > I've looked there. It wasn't useful for me in my case :( I found it very useful for your case. But where did you get stuck in your implementation? Bye Michael > But where did you get stuck in your implementation? I have to know on which leaf am I trying to drop and I don't know how to get it. I'm trying to add mouse listener on target of dropping ( in canimport() method) but it does not work. The main goal which I want to make is changing a cursor when it is over the leaf where dropping is disabled. I can recognize if I've dropped on right leaf or the not allowed leaf. But it is done after dropping and I want to know it before dropping - change of cursors should inform user where dropping is allowed or not. Tutorial with jlist to jlist drag and drop is useful, I inserted instead of one list my jtree but I can't do thing I've written above. Drag and drop without that works. Is it clear for you what I want to make? Have you and idea how to do it? I suppose it should be something connected with ability to get info about path in tree while mouse is over choosen leaf, not after it has been clicked Mariusz mario schrieb: >> But where did you get stuck in your implementation? > [quoted text clipped - 6 lines] > dropping - change of cursors should inform user where dropping is > allowed or not. You can use a DropTargetListener for this. Bye Michael > You can use a DropTargetListener for this. OK, DropTargetListener does what I wrote in last post. But there is another problem: when I'm over particular leaf, where dropping is disabled (disabled because I don't want user to drop there) I want cursor to change. At the moment I'm able to change setDragEnabled for whole tree, not in any moment. Is it possible to do? For some parts of tree disabel dropping... I can get the path on tree on which I'm while mouse is over tree but I don't know how to use it. Mariusz mario schrieb: >> You can use a DropTargetListener for this. > [quoted text clipped - 5 lines] > of tree disabel dropping... I can get the path on tree on which I'm > while mouse is over tree but I don't know how to use it. You've just to call e.rejectDrag() or e.acceptDrag() where e ist the DropTargetDragEvent. Bye Michael > You've just to call e.rejectDrag() or e.acceptDrag() where e ist the > DropTargetDragEvent. Thank you very much! It works :) Mariusz Free MagazinesGet these publications absolutely FREE for up to 12 months. There are no hidden fees and no obligation. Simply choose a title, complete the application form and submit it. Read more ...
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