Re: [flexcoders] Re: Tree drag drop: how to get node where item is dropped
I just encountered this problem in our app this morning, and I thought
my solution might be helpful for someone out there. Building on
Peter's example (1), I also needed to allow a user to drag a new root
node onto the tree. That is, if they drag onto an existing node, add
it as a child. Otherwise, add it as a root. Below us a sketch of the
doDragDrop function I used. It's a hack, but it works:
private function doDragDrop(e:DragEvent):void {
var items:Array = e.dragSource.dataForFormat(items) as Array;
if(e.target == myTree) {
var tree:Tree = Tree(e.target);
var i:int = tree.calculateDropIndex(e);
tree.addEventListener(FlexEvent.VALUE_COMMIT, figureActionOut);
tree.selectedIndex = i;
tree.removeEventListener(FlexEvent.VALUE_COMMIT, figureActionOut);
function figureActionOut(e2:FlexEvent):void {
if(tree.selectedIndex != i) {
trace(Add New Root(s));
} else {
trace(Add Child(ren));
}
}
}
}
Hope that helps someone!
Jim
1.
http://www.adobe.com/cfusion/webforums/forum/messageview.cfm?forumid=60catid=585threadid=1209910
On 10/30/06, kim_boulton [EMAIL PROTECTED] wrote:
If you skim over to the Adobe Flex 2 General discussion forum. Peter
Ent just showed me how to get this working.
Easy too.
hth
kimb
--- In flexcoders@yahoogroups.com, kim_boulton [EMAIL PROTECTED] wrote:
Hello,
Me too!
kimb
--- In flexcoders@yahoogroups.com, Niklas Richardson
flexcoldfusion@ wrote:
Hi there,
Could you post your example code as I'm just trying to sort this out
myself
and running into the same problem.
Thanks.
Regards
Niklas
On 8/21/06, Jason Y. Kwong inlineblue@ wrote:
I had posted a request to Adobe's wish form, asking that the
drop data
be made available. I got a very quick response (within 10
minutes!):
Yes, we discovered this very soon after shipping that this data
should
have been exposed. We have a bug for this already logged
internally, so
we will work on fixing it for the future. For now, I think you
will have
to rewrite your own updateDropData function, which is unfortunate.
So I'll have to stick with my original plan of duplicating a few
methods
(as stated in my original post).
On 8/21/06, thunderstumpgesatwork thunder.stumpges@ wrote:
I'm glad it's not just me! So, were you able to get something
working
for your scenario?
Anyone from the Adobe team want to confirm this and/or offer
alternative solutions?
thanks,
Thunder
--- In flexcoders@yahoogroups.com
flexcoders%40yahoogroups.com, Jason
Y. Kwong inlineblue@
wrote:
I've running into this myself right now as well. If you look
at the
Tree
code, you can see that the drop parent is being tracked in the
variable
_dropData.parent. It gets calculated in the method
updateDropData().
Unfortunately, both the variable and the method are private, so
they're
useless as is (another example of Adobe being overly
private, I'm
afraid).
I've had to duplicate (and tweak) the updateDropData() method to
make use of
the algorithm. The methods getChildIndexInParent() and
getChildren() had to
be duplicated as well.
On 8/18/06, thunderstumpgesatwork thunder.stumpges@ wrote:
Bump... I'm trying to do similar. Though I need to do it
in the
DragOver event, and determine under which node it is going
to be
dropped. I need to do this because certain places in the
tree are
acceptable places to drop certain items...
I know I can get the dropIndex by using the tree function
calculateDropIndex however this is not enough. It simply
tells me
where in the list of displayed nodes it will go. So if the
item is
being placed between the last item in a lower level node
and the
continuation of the next level up, the index is the same,
but the
parent of the ending drop is different.
I can tell the Tree internals are tracking this because
the drop
indicator changes it's horizontal alignment to indicate
which level
it's going in...
Anyone know how to determine the parent node of the
indicated drop
position?
thanks,
Thunder
--- In flexcoders@yahoogroups.com
flexcoders%40yahoogroups.comflexcoders%40yahoog
roups.com,
Jonas
Windey jonas@ wrote:
Hi,
I have a tree with drag drop enabled. Now what is the
best way
to
find out
where the current selected item is dropped?
I'd need to know its parent (if it's not
Re: [flexcoders] Re: Tree drag drop: how to get node where item is dropped
Hi there,Could you post your example code as I'm just trying to sort this out myself and running into the same problem.Thanks.RegardsNiklas On 8/21/06, Jason Y. Kwong [EMAIL PROTECTED] wrote: I had posted a request to Adobe's wish form, asking that the drop data be made available. I got a very quick response (within 10 minutes!):Yes, we discovered this very soon after shipping that this data should have been exposed. We have a bug for this already logged internally, sowe will work on fixing it for the future. For now, I think you will haveto rewrite your own updateDropData function, which is unfortunate. So I'll have to stick with my original plan of duplicating a few methods (as stated in my original post).On 8/21/06, thunderstumpgesatwork [EMAIL PROTECTED] wrote: I'm glad it's not just me! So, were you able to get something working for your scenario? Anyone from the Adobe team want to confirm this and/or offer alternative solutions? thanks, Thunder --- In flexcoders@yahoogroups.com, Jason Y. Kwong [EMAIL PROTECTED] wrote: I've running into this myself right now as well. If you look at the Tree code, you can see that the drop parent is being tracked in the variable _dropData.parent. It gets calculated in the method updateDropData(). Unfortunately, both the variable and the method are private, so they're useless as is (another example of Adobe being overly private, I'm afraid). I've had to duplicate (and tweak) the updateDropData() method to make use of the algorithm. The methods getChildIndexInParent() and getChildren() had to be duplicated as well. On 8/18/06, thunderstumpgesatwork [EMAIL PROTECTED] wrote: Bump... I'm trying to do similar. Though I need to do it in the DragOver event, and determine under which node it is going to be dropped. I need to do this because certain places in the tree are acceptable places to drop certain items... I know I can get the dropIndex by using the tree function calculateDropIndex however this is not enough. It simply tells me where in the list of displayed nodes it will go. So if the item is being placed between the last item in a lower level node and the continuation of the next level up, the index is the same, but the parent of the ending drop is different. I can tell the Tree internals are tracking this because the drop indicator changes it's horizontal alignment to indicate which level it's going in... Anyone know how to determine the parent node of the indicated drop position? thanks, Thunder --- In flexcoders@yahoogroups.com flexcoders%40yahoog roups.com, Jonas Windey jonas@ wrote: Hi, I have a tree with drag drop enabled. Now what is the best way to find out where the current selected item is dropped? I'd need to know its parent (if it's not on the rootnode), and the position where it's dropped inside that parent. Or is there an easier way to find the position? Like comparing the dataproviders before after? Thanks for the tips, Jonas -- Niklas RichardsonPrismix LtdUK based Flex and ColdFusion Specialists __._,_.___ -- Flexcoders Mailing List FAQ: http://groups.yahoo.com/group/flexcoders/files/flexcodersFAQ.txt Search Archives: http://www.mail-archive.com/flexcoders%40yahoogroups.com SPONSORED LINKS Software development tool Software development Software development services Home design software Software development company Your email settings: Individual Email|Traditional Change settings via the Web (Yahoo! ID required) Change settings via email: Switch delivery to Daily Digest | Switch to Fully Featured Visit Your Group | Yahoo! Groups Terms of Use | Unsubscribe __,_._,___
Re: [flexcoders] Re: Tree drag drop: how to get node where item is dropped
I had posted a request to Adobe's wish form, asking that the drop data be made available. I got a very quick response (within 10 minutes!):Yes, we discovered this very soon after shipping that this data should have been exposed. We have a bug for this already logged internally, sowe will work on fixing it for the future. For now, I think you will haveto rewrite your own updateDropData function, which is unfortunate. So I'll have to stick with my original plan of duplicating a few methods (as stated in my original post).On 8/21/06, thunderstumpgesatwork [EMAIL PROTECTED] wrote: I'm glad it's not just me! So, were you able to get something working for your scenario? Anyone from the Adobe team want to confirm this and/or offer alternative solutions? thanks, Thunder --- In flexcoders@yahoogroups.com, Jason Y. Kwong [EMAIL PROTECTED] wrote: I've running into this myself right now as well. If you look at the Tree code, you can see that the drop parent is being tracked in the variable _dropData.parent. It gets calculated in the method updateDropData(). Unfortunately, both the variable and the method are private, so they're useless as is (another example of Adobe being overly private, I'm afraid). I've had to duplicate (and tweak) the updateDropData() method to make use of the algorithm. The methods getChildIndexInParent() and getChildren() had to be duplicated as well. On 8/18/06, thunderstumpgesatwork [EMAIL PROTECTED] wrote: Bump... I'm trying to do similar. Though I need to do it in the DragOver event, and determine under which node it is going to be dropped. I need to do this because certain places in the tree are acceptable places to drop certain items... I know I can get the dropIndex by using the tree function calculateDropIndex however this is not enough. It simply tells me where in the list of displayed nodes it will go. So if the item is being placed between the last item in a lower level node and the continuation of the next level up, the index is the same, but the parent of the ending drop is different. I can tell the Tree internals are tracking this because the drop indicator changes it's horizontal alignment to indicate which level it's going in... Anyone know how to determine the parent node of the indicated drop position? thanks, Thunder --- In flexcoders@yahoogroups.com flexcoders%40yahoogroups.com, Jonas Windey jonas@ wrote: Hi, I have a tree with drag drop enabled. Now what is the best way to find out where the current selected item is dropped? I'd need to know its parent (if it's not on the rootnode), and the position where it's dropped inside that parent. Or is there an easier way to find the position? Like comparing the dataproviders before after? Thanks for the tips, Jonas __._,_.___ -- Flexcoders Mailing List FAQ: http://groups.yahoo.com/group/flexcoders/files/flexcodersFAQ.txt Search Archives: http://www.mail-archive.com/flexcoders%40yahoogroups.com SPONSORED LINKS Web site design development Computer software development Software design and development Macromedia flex Software development best practice YAHOO! GROUPS LINKS Visit your group "flexcoders" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service. __,_._,___
Re: [flexcoders] Re: Tree drag drop: how to get node where item is dropped
I've running into this myself right now as well. If you look at the Tree code, you can see that the drop parent is being tracked in the variable _dropData.parent. It gets calculated in the method updateDropData(). Unfortunately, both the variable and the method are private, so they're useless as is (another example of Adobe being overly private, I'm afraid). I've had to duplicate (and tweak) the updateDropData() method to make use of the algorithm. The methods getChildIndexInParent() and getChildren() had to be duplicated as well. On 8/18/06, thunderstumpgesatwork [EMAIL PROTECTED] wrote: Bump... I'm trying to do similar. Though I need to do it in the DragOver event, and determine under which node it is going to be dropped. I need to do this because certain places in the tree are acceptable places to drop certain items... I know I can get the dropIndex by using the tree function calculateDropIndex however this is not enough. It simply tells me where in the list of displayed nodes it will go. So if the item is being placed between the last item in a lower level node and the continuation of the next level up, the index is the same, but the parent of the ending drop is different. I can tell the Tree internals are tracking this because the drop indicator changes it's horizontal alignment to indicate which level it's going in... Anyone know how to determine the parent node of the indicated drop position? thanks, Thunder --- In flexcoders@yahoogroups.com, Jonas Windey [EMAIL PROTECTED] wrote: Hi, I have a tree with drag drop enabled. Now what is the best way to find out where the current selected item is dropped? I'd need to know its parent (if it's not on the rootnode), and the position where it's dropped inside that parent. Or is there an easier way to find the position? Like comparing the dataproviders before after? Thanks for the tips, Jonas __._,_.___ -- Flexcoders Mailing List FAQ: http://groups.yahoo.com/group/flexcoders/files/flexcodersFAQ.txt Search Archives: http://www.mail-archive.com/flexcoders%40yahoogroups.com SPONSORED LINKS Software development tool Software development Software development services Home design software Software development company YAHOO! GROUPS LINKS Visit your group "flexcoders" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service. __,_._,___
