Hi Semyon,

 

Thanks for your inputs. You are right about the need for redirecting 
AwtInputTextInfor::GetAttributeInfor also to m_pResultTextInfor.

This scenario can happen when for the main AwtInputTextInfor (having the 
composition string in this case), the size of the current composition string is 
zero or if there is a mismatch in the size of the composition attribute and the 
composition string. 

However, I have not yet been able to regenerate this scenario at all, as 
composition string being zero indirectly implies that WM_IME_COMPOSITION will 
not be send with GCS_COMPSTR.

This could probably explain why GetAttributeInfor was never redirected to 
m_pResultTextInfor and the results were only merged.

But there is still a theoretical possibility of this happening.

I have updated the webrev with this change.

 

Updated Webrev : 
http://cr.openjdk.java.net/~ssreedharan/8176072/jdk10/webrev.01/ 

 

Thanks And Regards,

Sreeprakash

 

From: Semyon Sadetsky 
Sent: Friday, November 17, 2017 12:22 AM
To: Sreeprakash Sreedharan <sreeprakas...@oracle.com>; 
awt-dev@openjdk.java.net; swing-...@openjdk.java.net
Subject: Re: <Swing Dev> [10] RFR JDK-8176072: READING attributes are not 
available on TSF

 

Hi Sreeprakash,

Shouldn't the AwtInputTextInfor::GetAttributeInfor be readdressed to 
m_pResultTextInfor as well?

--Semyon

 

On 11/16/2017 08:36 AM, Sreeprakash Sreedharan wrote:

Hello All,

 

Please review the following fix in JDK10.

 

Bug : https://bugs.openjdk.java.net/browse/JDK-8176072 

Webrev : HYPERLINK 
"http://cr.openjdk.java.net/%7Essreedharan/8176072/jdk10/webrev.00/"http://cr.openjdk.java.net/~ssreedharan/8176072/jdk10/webrev.00/
 

 

The bug describes a scenario wherein reading 
(AttributedCharacterIterator.Attribute.READING) attributes are not obtained 
from the InputMethodEvent text. (Japanese IME)

(Detailed summary is provided in the HYPERLINK 
"https://bugs.openjdk.java.net/browse/JDK-8176072?focusedCommentId=14131714&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-14131714"JBS-Comment)

 

Issue:

This issue is seen when IMM sends WM_IME_COMPOSITION with both GCS_COMPSTR and 
GCS_RESULTSTR. The scenario is handled in AwtInputTextInfor::GetContextData, 
where we extract the result string using the GCS_RESULTSTR data and store it in 
m_pResultTextInfor, member variable inside the main AwtInputTextInfor. Along 
with the result string the READING attributes of the first portion of the 
string is also stored in m_pResultTextInfor. The main AwtInputTextInfor stores 
the data represented by GCS_COMPSTR. When GetClauseInfor is called on the main 
AwtInputTextInfor, it just checks whether the read clause is present within it. 
If it's not present, it just returns NULL even though the GCS_RESULTSTR data 
present within m_pResultTextInfor has READING attributes present.

 

Solution :

In GetClauseInfor, made sure that even if the main AwtInputTextInfor doesn't 
have any clause and Reading information it still checks for the GCS_RESULTSTR 
data held in m_pResultTextInfor.

Also in WInputMethod.java, there was a condition which checks whether the last 
element in clauseBoundary is equal to length of the text entered. This is an 
incorrect assumption, as proven in the test case. 

Here, the last element of clauseBoundary comes as 2 (length of the Japanese 
String formed after typing 'a','b','e','space','space'), but the final text now 
has the new character 's' added and the total length will be 3.

 

 

The test case added requires the user to change to Japanese IME and hence its 
manual.

I have run all relevant JTREG test cases and Mach5 jobs and didn't see any 
failures.

 

Regards,

Sreeprakash

 

 

 

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