JDK-8119769 : TextField/TextArea, caret movement problem for mixed text.
  • Type: Bug
  • Component: javafx
  • Sub-Component: controls
  • Affected Version: 8
  • Priority: P4
  • Status: Resolved
  • Resolution: Fixed
  • Submitted: 2013-05-31
  • Updated: 2015-06-17
  • Resolved: 2013-09-11
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JDK 8
8Fixed
Related Reports
Relates :  
JDK-8088571 - TextArea, caret problem at the left-most or right-most of the text.
Description
Tested with 8.0 b91. Create some TextField/TextArea with mixed text (arabic + other characters), check the caret movement when pressing left/right/home/end keys.
There is a couple of issue:
1. For symbol + arabic, like  *#@  ��������  ,    in "*#@", when pressing right arrow key, caret move from right to left and vice versa.
2. For arabic + hindi, like   �������� ���������������  , at the beginning of hindi, when pressing right arrow key, caret doesn't move.

Attached a test program.
Comments
Changeset: http://hg.openjdk.java.net/openjfx/8/controls/rt/rev/000296470ed2
11-09-2013
The cursor movement logic depends on using visual hit testing when the content is mixed bidi. In the first example, there are only neutral and rtl characters, so the Bidi class was reporting not mixed, but all rtl, even though the neutral characters are (correctly) rendered ltr. The following patch seems to fix the problem. The second example does not seem to be reproducible anymore. Please review. diff -r 5c3ec77e5d2a modules/controls/src/main/java/com/sun/javafx/scene/control/behavior/TextInputControlBehavior.java --- a/modules/controls/src/main/java/com/sun/javafx/scene/control/behavior/TextInputControlBehavior.java Thu Sep 05 17:02:27 2013 -0400 +++ b/modules/controls/src/main/java/com/sun/javafx/scene/control/behavior/TextInputControlBehavior.java Fri Sep 06 12:45:54 2013 -0700 @@ -269,8 +269,8 @@ if (bidi == null) { bidi = new Bidi(textInputControl.getText(), (textInputControl.getEffectiveNodeOrientation() == NodeOrientation.RIGHT_TO_LEFT) - ? Bidi.DIRECTION_DEFAULT_RIGHT_TO_LEFT - : Bidi.DIRECTION_DEFAULT_LEFT_TO_RIGHT); + ? Bidi.DIRECTION_RIGHT_TO_LEFT + : Bidi.DIRECTION_LEFT_TO_RIGHT); } return bidi; }
06-09-2013