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https://issues.apache.org/jira/browse/FLEX-35019?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Judah Frangipane updated FLEX-35019:
------------------------------------
Description:
When dragging and dropping, a
{code}"Type Error #1010 A term is undefined and has no properties" {code}
occurs sometimes when dragging over multiple rows.
It may only happen with the NativeDragManager or may not. I haven't pinned it
down. I've attached screen shots.
It happens on Line 2782 in mx.controls.Tree:
{code:actionscript}
var topItem:Object = (rowNum > _verticalScrollPosition && rowNum <= numItems) ?
listItems[rowNum -
_verticalScrollPosition - 1][0].data : null;
{code}
The item at this index contains no items (see screenshot):
{code:actionscript}
listItems[rowNum - _verticalScrollPosition - 1]
{code}
The solution may be to check if the array has a length:
{code:actionscript}
if ((rowNum > _verticalScrollPosition && rowNum <= numItems) &&
listItems[rowNum - _verticalScrollPosition - 1].length ) {
var topItem:Object = listItems[rowNum - _verticalScrollPosition -
1][0].data;
}
{code}
but that may only prevent the error and not be the root of the problem.
Note: It looks like the next line doesn't test if the array has data either:
{code:actionscript}
var bottomItem:Object = (rowNum - verticalScrollPosition < rowInfo.length &&
rowNum < numItems) ?
listItems[rowNum -
_verticalScrollPosition][0].data : null;
{code}
was:
When dragging and dropping, a
{code}"Type Error #1010 A term is undefined and has no properties" {code}
occurs sometimes when dragging over multiple rows.
It may only happen with the NativeDragManager or may not. I haven't pinned it
down. I've attached screen shots.
It happens on Line 2782 in mx.controls.Tree:
{code:actionscript}
var topItem:Object = (rowNum > _verticalScrollPosition && rowNum <= numItems) ?
listItems[rowNum -
_verticalScrollPosition - 1][0].data : null;
{code}
This item:
{code:actionscript}
listItems[rowNum - _verticalScrollPosition - 1]
{code}
contains no items.
The solution may be to check if the array has a length:
{code:actionscript}
if ((rowNum > _verticalScrollPosition && rowNum <= numItems) &&
listItems[rowNum - _verticalScrollPosition - 1].length ) {
var topItem:Object = listItems[rowNum - _verticalScrollPosition -
1][0].data;
}
{code}
but that may only prevent the error and not be the root of the problem.
Note: It looks like the next line doesn't test if the array has data either:
{code:actionscript}
var bottomItem:Object = (rowNum - verticalScrollPosition < rowInfo.length &&
rowNum < numItems) ?
listItems[rowNum -
_verticalScrollPosition][0].data : null;
{code}
> Tree Error in updateDropData
> ----------------------------
>
> Key: FLEX-35019
> URL: https://issues.apache.org/jira/browse/FLEX-35019
> Project: Apache Flex
> Issue Type: Bug
> Components: Spark: Tree
> Affects Versions: Apache Flex 4.15.0
> Reporter: Judah Frangipane
> Attachments: Screen Shot 2016-01-22 at 4.19.23 PM.png, Screen Shot
> 2016-01-22 at 4.19.58 PM.png, Screen Shot 2016-01-22 at 4.21.59 PM.png
>
>
> When dragging and dropping, a
> {code}"Type Error #1010 A term is undefined and has no properties" {code}
> occurs sometimes when dragging over multiple rows.
> It may only happen with the NativeDragManager or may not. I haven't pinned it
> down. I've attached screen shots.
> It happens on Line 2782 in mx.controls.Tree:
> {code:actionscript}
> var topItem:Object = (rowNum > _verticalScrollPosition && rowNum <= numItems)
> ?
> listItems[rowNum -
> _verticalScrollPosition - 1][0].data : null;
> {code}
> The item at this index contains no items (see screenshot):
> {code:actionscript}
> listItems[rowNum - _verticalScrollPosition - 1]
> {code}
> The solution may be to check if the array has a length:
> {code:actionscript}
> if ((rowNum > _verticalScrollPosition && rowNum <= numItems) &&
> listItems[rowNum - _verticalScrollPosition - 1].length ) {
> var topItem:Object = listItems[rowNum - _verticalScrollPosition -
> 1][0].data;
> }
> {code}
> but that may only prevent the error and not be the root of the problem.
> Note: It looks like the next line doesn't test if the array has data either:
> {code:actionscript}
> var bottomItem:Object = (rowNum - verticalScrollPosition < rowInfo.length &&
> rowNum < numItems) ?
> listItems[rowNum -
> _verticalScrollPosition][0].data : null;
> {code}
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