You are viewing a plain text version of this content. The canonical link for it is here.
Posted to dev@flex.apache.org by "Alex Harui (JIRA)" <ji...@apache.org> on 2012/11/05 20:44:12 UTC
[jira] [Updated] (FLEX-28967) PopUpManagerImpl - centerPopUp method
- TypeError: Error #1009: Cannot access a property or method of a null
object reference
[ https://issues.apache.org/jira/browse/FLEX-28967?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Alex Harui updated FLEX-28967:
------------------------------
Labels: EasyFix (was: )
> PopUpManagerImpl - centerPopUp method - TypeError: Error #1009: Cannot access a property or method of a null object reference
> -----------------------------------------------------------------------------------------------------------------------------
>
> Key: FLEX-28967
> URL: https://issues.apache.org/jira/browse/FLEX-28967
> Project: Apache Flex
> Issue Type: Bug
> Components: PopUp Manager
> Affects Versions: Adobe Flex SDK Previous
> Environment: Affected OS(s): All OS Platforms
> Affected OS(s): All OS Platforms
> Browser: Internet Explorer 8.x
> Language Found: English
> Reporter: Adobe JIRA
> Labels: EasyFix
>
> Steps to reproduce:
> 1. using PopUpManager
>
> Error in the code:
> public function centerPopUp(popUp:IFlexDisplayObject):void
> {
> if (popUp is IInvalidating)
> IInvalidating(popUp).validateNow();
> const o:PopUpData = findPopupInfoByOwner(popUp);
>
> // If we don't find the pop owner or if the owner's parent is not specified or is not on the
> // stage, then center based on the popUp's current parent.
> var popUpParent:DisplayObject = (o && o.parent && o.parent.stage) ? o.parent : popUp.parent;
> if (popUpParent)
> {
> var systemManager:ISystemManager = o.systemManager;
> .
> .
> .
> .
> If const "o" is null, popUpParent is set to popUp.parent as stated by condition above.
> However in next step you assume that const "o" exists because you're asking for o.systemManager, but o is null.
> Therefore: TypeError: Error #1009: Cannot access a property or method of a null object reference
> Fix:
> public function centerPopUp(popUp:IFlexDisplayObject):void
> {
> if (popUp is IInvalidating)
> IInvalidating(popUp).validateNow();
> const o:PopUpData = findPopupInfoByOwner(popUp);
>
> var popUpParent:DisplayObject = (o && o.parent && o.parent.stage) ? o.parent : popUp.parent;
> if (popUpParent)
> {
> var systemManager:ISystemManager;
> if (o != null) {
> systemManager = o.systemManager;
> } else if (popUpParent.hasOwnProperty("systemManager")) {
> systemManager = popUpParent["systemManager"];
> } else if (popUpParent is ISystemManager) {
> systemManager = popUpParent as ISystemManager;
> }
>
> if (!systemManager)
> return; // or throw exception maybe ?
> .
> .
> .
> .
--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira