RE: [flexcoders] Flex2B3 - Drag And Drop - Drop Into Tree (different from B2)
I've been having allot of problems as well with the tree and drag drop
operations. Specifically if the fact that the tree does not update properly
now, as it did before with relation to it's data source. Also Im finding
that the drop indicator is all over the place. Are you experiencing the same
problems ?
Anyway to answer your question:
the below line should give you the node your over.
var currNodeOver:Object =
currTree.indexToItemRenderer(currTree.calculateDropIndex(event)).data;
then to get the drop parent would be something like
var myparent:object = getParentItem(currNodeOve);
Hope that helps.
Jason
-Message d'origine-
De : flexcoders@yahoogroups.com [mailto:[EMAIL PROTECTED] la
part de Andrea Varga
Envoyé : jeudi 11 mai 2006 10:42
À : flexcoders@yahoogroups.com
Objet : [flexcoders] Flex2B3 - Drag And Drop - Drop Into Tree (different
from B2)
Hi All
I'm having difficulty with the drop part of the drag and drop in a Tree
in B3.
I have my tree defined this way:
mx:Tree id=myTree
dataProvider={myTreeData}
dragEnter=doDragEnterTree(event);
dragDrop=doDragDropTree(event);/
And I have this method for dragDrop:
private function doDragDropTree(event:DragEvent):void {
trace(DROP IN TREE index: + myTree.calculateDropIndex(event));
}
This works well. My problem is: I want to know WHERE exacty the drop was
fired (where did the user released the mouse button) to know where the
insert my new item. The calculateDropIndex works well for List type
components, but for a Tree it is useless. It returns a level number.
In B2 the Tree had a method Tree.getDropParent(event), I suppose this
returned what I was looking for, but in B3 the Tree has no such a
method. In Flex Beta 2 to Beta 3 Changes it says:
Tree.getDropParent(event) - Use Tree.getParentItem(item:Object):*.
But I don't understand the logic here. getParentItem() has as parameter
item:Object, and I don't kno that, I know just an event, I want to find
out the item:Object.
What is the solution here?
Thanks for your help!
Andi
PS. My messages appear on the list with more than 8 hours delay Why?
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RE: [flexcoders] Flex2B3 - Drag And Drop - Drop Into Tree (different from B2)
Actually your right it is giving the level, g.. i have not fully
tested since beta 3 but a trace shows that it does in fact not get you the
specific item.
I'm also interested in figuring this out. Please keep me up to date with
your progress, i'll do the same. :)
Jason
-Message d'origine-
De : flexcoders@yahoogroups.com [mailto:[EMAIL PROTECTED] la
part de Jason Hawryluk
Envoyé : jeudi 11 mai 2006 13:22
À : flexcoders@yahoogroups.com
Objet : RE: [flexcoders] Flex2B3 - Drag And Drop - Drop Into Tree (different
from B2)
I've been having allot of problems as well with the tree and drag drop
operations. Specifically if the fact that the tree does not update properly
now, as it did before with relation to it's data source. Also Im finding
that the drop indicator is all over the place. Are you experiencing the same
problems ?
Anyway to answer your question:
the below line should give you the node your over.
var currNodeOver:Object =
currTree.indexToItemRenderer(currTree.calculateDropIndex(event)).data;
then to get the drop parent would be something like
var myparent:object = getParentItem(currNodeOve);
Hope that helps.
Jason
-Message d'origine-
De : flexcoders@yahoogroups.com [mailto:[EMAIL PROTECTED] la
part de Andrea Varga
Envoyé : jeudi 11 mai 2006 10:42
À : flexcoders@yahoogroups.com
Objet : [flexcoders] Flex2B3 - Drag And Drop - Drop Into Tree (different
from B2)
Hi All
I'm having difficulty with the drop part of the drag and drop in a Tree
in B3.
I have my tree defined this way:
mx:Tree id=myTree
dataProvider={myTreeData}
dragEnter=doDragEnterTree(event);
dragDrop=doDragDropTree(event);/
And I have this method for dragDrop:
private function doDragDropTree(event:DragEvent):void {
trace(DROP IN TREE index: + myTree.calculateDropIndex(event));
}
This works well. My problem is: I want to know WHERE exacty the drop was
fired (where did the user released the mouse button) to know where the
insert my new item. The calculateDropIndex works well for List type
components, but for a Tree it is useless. It returns a level number.
In B2 the Tree had a method Tree.getDropParent(event), I suppose this
returned what I was looking for, but in B3 the Tree has no such a
method. In Flex Beta 2 to Beta 3 Changes it says:
Tree.getDropParent(event) - Use Tree.getParentItem(item:Object):*.
But I don't understand the logic here. getParentItem() has as parameter
item:Object, and I don't kno that, I know just an event, I want to find
out the item:Object.
What is the solution here?
Thanks for your help!
Andi
PS. My messages appear on the list with more than 8 hours delay Why?
--
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RE: [flexcoders] Flex2B3 - Drag And Drop - Drop Into Tree (different from B2)
So after a little more investigation the internals of the tree control are
using the same method, hence the reason that the indicator seems to bounce
around. i.e. it's not taking into consideration that it is a hierarchical
data structure and only considering it is a flat list that is why we can't
get the drop loc and the separator is only being applied to the first level.
Or, it would seem that is the case. This is my assumption (I really wish to
be corrected).
I really need to find a work around until the next beta, as for me, this is
a real show stopper.
Jason Hawryluk
-Message d'origine-
De : flexcoders@yahoogroups.com [mailto:[EMAIL PROTECTED] la
part de Jason Hawryluk
Envoyé : jeudi 11 mai 2006 13:51
À : flexcoders@yahoogroups.com
Objet : RE: [flexcoders] Flex2B3 - Drag And Drop - Drop Into Tree (different
from B2)
Actually your right it is giving the level, g.. i have not fully
tested since beta 3 but a trace shows that it does in fact not get you the
specific item.
I'm also interested in figuring this out. Please keep me up to date with
your progress, i'll do the same. :)
Jason
-Message d'origine-
De : flexcoders@yahoogroups.com [mailto:[EMAIL PROTECTED] la
part de Jason Hawryluk
Envoyé : jeudi 11 mai 2006 13:22
À : flexcoders@yahoogroups.com
Objet : RE: [flexcoders] Flex2B3 - Drag And Drop - Drop Into Tree (different
from B2)
I've been having allot of problems as well with the tree and drag drop
operations. Specifically if the fact that the tree does not update properly
now, as it did before with relation to it's data source. Also Im finding
that the drop indicator is all over the place. Are you experiencing the same
problems ?
Anyway to answer your question:
the below line should give you the node your over.
var currNodeOver:Object =
currTree.indexToItemRenderer(currTree.calculateDropIndex(event)).data;
then to get the drop parent would be something like
var myparent:object = getParentItem(currNodeOve);
Hope that helps.
Jason
-Message d'origine-
De : flexcoders@yahoogroups.com [mailto:[EMAIL PROTECTED] la
part de Andrea Varga
Envoyé : jeudi 11 mai 2006 10:42
À : flexcoders@yahoogroups.com
Objet : [flexcoders] Flex2B3 - Drag And Drop - Drop Into Tree (different
from B2)
Hi All
I'm having difficulty with the drop part of the drag and drop in a Tree
in B3.
I have my tree defined this way:
mx:Tree id=myTree
dataProvider={myTreeData}
dragEnter=doDragEnterTree(event);
dragDrop=doDragDropTree(event);/
And I have this method for dragDrop:
private function doDragDropTree(event:DragEvent):void {
trace(DROP IN TREE index: + myTree.calculateDropIndex(event));
}
This works well. My problem is: I want to know WHERE exacty the drop was
fired (where did the user released the mouse button) to know where the
insert my new item. The calculateDropIndex works well for List type
components, but for a Tree it is useless. It returns a level number.
In B2 the Tree had a method Tree.getDropParent(event), I suppose this
returned what I was looking for, but in B3 the Tree has no such a
method. In Flex Beta 2 to Beta 3 Changes it says:
Tree.getDropParent(event) - Use Tree.getParentItem(item:Object):*.
But I don't understand the logic here. getParentItem() has as parameter
item:Object, and I don't kno that, I know just an event, I want to find
out the item:Object.
What is the solution here?
Thanks for your help!
Andi
PS. My messages appear on the list with more than 8 hours delay Why?
--
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Re: [flexcoders] Flex2B3 - Drag And Drop - Drop Into Tree (different from B2)
Jason Hawryluk wrote:
I've been having allot of problems as well with the tree and drag drop
operations. Specifically if the fact that the tree does not update properly
now, as it did before with relation to it's data source. Also I’m finding
that the drop indicator is all over the place. Are you experiencing the same
problems ?
This is interesting (meaning strange :)). I was having the exact
opposite problem
I want to drag from a List and drop into a Tree. I always had the redX
icon there, even when I called the acceptDragDrop, and the drop was
excepted too.
The only way I could find to solve the problem was leaving out the:
dropEnabled=true on the Tree.
It is really strange, because I thought that this is mandatory to be
able to drop on the Tree.
Below is my test code in case you are interested.
Andi
?xml version=1.0 encoding=utf-8?
mx:Application xmlns:mx=http://www.adobe.com/2006/mxml; layout=absolute
xmlns:ns1=*
creationComplete=onCreationComplete()
mx:Script
![CDATA[
import mx.containers.Canvas;
import mx.managers.DragManager;
import mx.events.DragEvent;
import mx.collections.ArrayCollection;
[Bindable]
public var myListData:ArrayCollection;
[Bindable]
public var myTreeData:Object;
private function onCreationComplete():void {
myListData = new ArrayCollection([{name: 'aaa'},{name: 'bbb'},{name:
'ccc'}]);
}
private function initTree():void {
myTreeData = {label: 'top', children:
[{label: 'level1_A',
children:
[{label: 'level2_1'},
{label: 'level2_2'}]},
{label: 'level1_B', children:
[{label: 'level2_x'},
{label: 'level2_y'}]}
]};
//expand Tree
expandTreeNode(myTree, myTree.dataProvider[0]);
}
public function expandTreeNode(tmpTree:Tree, node:Object):void {
tmpTree.expandItem(node, true);
if(node.children != undefined) {
for(var k:Number=0; k node.children.length; k++){
expandTreeNode(tmpTree, node.children[k]);
}
}
}
private function doDragOverTree(event:DragEvent):void {
DragManager.showFeedback(DragManager.NONE);
}
private function doDragEnterTree(event:DragEvent):void {
var dragTarget:Tree = Tree(event.currentTarget);
if ((DataGrid(event.dragInitiator).id == 'myList')){
DragManager.acceptDragDrop(dragTarget);
trace(DO DRAG ENTER accept drag into +dragTarget);
}
}
private function doDragDropTree(event:DragEvent):void {
trace(DROP IN TREE index: + myTree.calculateDropIndex(event));
trace(' dropevent[currentTarget] = '+event['currentTarget']);
}
]]
/mx:Script
mx:DataGrid id=myList x=46 y=28 dataProvider={myListData}
dragEnabled=true
mx:columns
mx:DataGridColumn headerText=Name dataField=name /
/mx:columns
/mx:DataGrid
mx:Tree id=myTree x=46 y=242 width=200 height=400
dataProvider={myTreeData}
dropEnabled=true
dragEnter=doDragEnterTree(event);
dragDrop=doDragDropTree(event);
creationComplete=initTree();/
/mx:Application
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RE: [flexcoders] Flex2B3 - Drag And Drop - Drop Into Tree (different from B2)
Hi Jason,
I've raised a bug regarding the location of the default drop feedback bar in the Tree control.
Thanks,
Paul
-Original Message-
From: flexcoders@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Jason Hawryluk
Sent: Thursday, May 11, 2006 12:22 PM
To: flexcoders@yahoogroups.com
Subject: RE: [flexcoders] Flex2B3 - Drag And Drop - Drop Into Tree (different from B2)
I've been having allot of problems as well with the tree and drag drop
operations. Specifically if the fact that the tree does not update properly
now, as it did before with relation to it's data source. Also I'm finding
that the drop indicator is all over the place. Are you experiencing the same
problems ?
Anyway to answer your question:
the below line should give you the node your over.
var currNodeOver:Object =
currTree.indexToItemRenderer(currTree.calculateDropIndex(event)).data;
then to get the drop parent would be something like
var myparent:object = getParentItem(currNodeOve);
Hope that helps.
Jason
-Message d'origine-
De : flexcoders@yahoogroups.com [mailto:[EMAIL PROTECTED] la
part de Andrea Varga
Envoyé : jeudi 11 mai 2006 10:42
À : flexcoders@yahoogroups.com
Objet : [flexcoders] Flex2B3 - Drag And Drop - Drop Into Tree (different
from B2)
Hi All
I'm having difficulty with the drop part of the drag and drop in a Tree
in B3.
I have my tree defined this way:
mx:Tree id=myTree
dataProvider={myTreeData}
dragEnter=doDragEnterTree(event);
dragDrop=doDragDropTree(event);/
And I have this method for dragDrop:
private function doDragDropTree(event:DragEvent):void {
trace(DROP IN TREE index: + myTree.calculateDropIndex(event));
}
This works well. My problem is: I want to know WHERE exacty the drop was
fired (where did the user released the mouse button) to know where the
insert my new item. The calculateDropIndex works well for List type
components, but for a Tree it is useless. It returns a level number.
In B2 the Tree had a method Tree.getDropParent(event), I suppose this
returned what I was looking for, but in B3 the Tree has no such a
method. In Flex Beta 2 to Beta 3 Changes it says:
Tree.getDropParent(event) - Use Tree.getParentItem(item:Object):*.
But I don't understand the logic here. getParentItem() has as parameter
item:Object, and I don't kno that, I know just an event, I want to find
out the item:Object.
What is the solution here?
Thanks for your help!
Andi
PS. My messages appear on the list with more than 8 hours delay Why?
--
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