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https://issues.apache.org/jira/browse/FLEX-34807?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14737128#comment-14737128
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Mihai Chira edited comment on FLEX-34807 at 9/9/15 4:35 PM:
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*Investigation update*: this bug was (highly likely) introduced by commit
[33df98ab9d2c69c84d4de6ab2ae969f9c5f93e35|https://fisheye6.atlassian.com/changelog/flex-tlf?cs=33df98ab9d2c69c84d4de6ab2ae969f9c5f93e35]
on the 5th Oct 2014. If I comment out the last if clause of
{{ParagraphElement.ensureTerminatorAfterReplace()}}, which was added by that
commit (and subsequently edited into its current form), the bug disappears.
That's because the algorithm in {{TextFlowEdit.insertTextScrap()}} requires at
least one FlowLeafElement before which to add the pasted contents, and before
this bug was introduced, that used to be {{ParagraphElement.terminatorSpan}}.
But since the commit the terminatorSpan has been merged into the previous span.
This seems to imply that there is an expectation in
{{TextFlowEdit.insertTextScrap()}} that {{destinationLeaf}} should never be
null (despite the null check in the line {code}insertPosition = destinationLeaf
? destinationLeaf.getAbsoluteStart() : textFlow.textLength - 1;{code}.
I imagine that just commenting out the code is not a viable solution, as it
will break other functionality. So we'll need either [~harbs] or [~pete21] to
throw in some thoughts, if they have the time. Much appreciated.
was (Author: evolverine):
*Investigation update*: this bug was (highly likely) introduced by commit
[33df98ab9d2c69c84d4de6ab2ae969f9c5f93e35|https://fisheye6.atlassian.com/changelog/flex-tlf?cs=33df98ab9d2c69c84d4de6ab2ae969f9c5f93e35]
on the 5th Oct 2014 by [~harbs]. If I comment out the last if clause of
{{ParagraphElement.ensureTerminatorAfterReplace()}}, which was added by that
commit (and subsequently edited into its current form), the bug disappears.
That's because the algorithm in {{TextFlowEdit.insertTextScrap()}} requires at
least one FlowLeafElement before which to add the pasted contents, and before
this bug was introduced, that used to be {{ParagraphElement.terminatorSpan}}.
But since the commit the terminatorSpan has been merged into the previous span.
This seems to imply that there is an expectation in
{{TextFlowEdit.insertTextScrap()}} that {{destinationLeaf}} should never be
null (despite the null check in the line {code}insertPosition = destinationLeaf
? destinationLeaf.getAbsoluteStart() : textFlow.textLength - 1;{code}.
I imagine that just commenting out the code is not a viable solution, as it
will break other functionality. So we'll need either [~harbs] or [~pete21] to
throw in some thoughts, if they have the time. Much appreciated.
> TLF - EditManager - TextFlowEdit -insertTextScrap
> -------------------------------------------------
>
> Key: FLEX-34807
> URL: https://issues.apache.org/jira/browse/FLEX-34807
> Project: Apache Flex
> Issue Type: Bug
> Components: Spark: RichEditableText
> Affects Versions: Apache Flex 4.12.0, Apache Flex 4.13.0, Apache Flex
> 4.14.0
> Reporter: Robbyn Gerhardt
> Assignee: Mihai Chira
> Labels: editmanager, richeditabletext, tlf
> Attachments: Bildschirmfoto 2015-03-19 um 15.28.19.png,
> Bildschirmfoto 2015-03-20 um 09.06.47.png, TextEditorTest.air,
> TextEditorTest.fxp
>
>
> 1. Copy Formatted text from RichEditableText Editor, see Image
> 2. Insert Formatted text from the clipboard with Ctrl + V in the editor. Then
> comes the error.
> TypeError: Error #1009: Cannot access a property or method of a null object
> reference.
> at
> flashx.textLayout.edit::TextFlowEdit$/insertTextScrap()[/Users/erik/Documents/ApacheFlex/git/flex-tlf/textLayout/src/flashx/textLayout/edit/TextFlowEdit.as:244]
> at
> flashx.textLayout.operations::PasteOperation/doOperation()[/Users/erik/Documents/ApacheFlex/git/flex-tlf/textLayout/src/flashx/textLayout/operations/PasteOperation.as:102]
> at
> flashx.textLayout.edit::EditManager/doInternal()[/Users/erik/Documents/ApacheFlex/git/flex-tlf/textLayout/src/flashx/textLayout/edit/EditManager.as:767]
> at
> flashx.textLayout.edit::EditManager/doOperation()[/Users/erik/Documents/ApacheFlex/git/flex-tlf/textLayout/src/flashx/textLayout/edit/EditManager.as:647]
> at
> flashx.textLayout.edit::EditManager/pasteTextScrap()[/Users/erik/Documents/ApacheFlex/git/flex-tlf/textLayout/src/flashx/textLayout/edit/EditManager.as:1806]
> at
> flashx.textLayout.edit::EditManager/editHandler()[/Users/erik/Documents/ApacheFlex/git/flex-tlf/textLayout/src/flashx/textLayout/edit/EditManager.as:270]
> at
> flashx.textLayout.container::ContainerController/editHandler()[/Users/erik/Documents/ApacheFlex/git/flex-tlf/textLayout/src/flashx/textLayout/container/ContainerController.as:2739]
> at
> flashx.textLayout.container::TextContainerManager/editHandler()[/Users/erik/Documents/ApacheFlex/git/flex-tlf/textLayout/src/flashx/textLayout/container/TextContainerManager.as:1876]
> at flash.display::NativeMenuItem/select()
> at flash.display::NativeMenuItem/performKeyEquivalent()
> at flash.display::NativeMenu/_menuItemPerformKeyEquivalent()
> at flash.display::NativeMenu/performKeyEquivalent()
> at flash.display::NativeMenuItem/_menuPerformKeyEquivalent()
> at flash.display::NativeMenuItem/performKeyEquivalent()
> at flash.display::NativeMenu/_menuItemPerformKeyEquivalent()
> at flash.display::NativeMenu/performKeyEquivalent()
> at flash.desktop::NativeApplication/_menuPerformKeyEquivalent()
> at flash.desktop::NativeApplication/_onKeyDownCapture()
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