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  1. JDK
  2. JDK-8193301

False assertion(s) inhibits D&D from SWT to FXCanvas more than once

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    Details

    • Type: Bug
    • Status: Closed
    • Priority: P4
    • Resolution: Duplicate
    • Affects Version/s: 8u151
    • Fix Version/s: None
    • Component/s: javafx
    • Subcomponent:
    • CPU:
      generic
    • OS:
      generic

      Description

      FULL PRODUCT VERSION :
      java version "1.8.0_151"
      Java(TM) SE Runtime Environment (build 1.8.0_151-b12)
      Java HotSpot(TM) 64-Bit Server VM (build 25.151-b12, mixed mode)

      ADDITIONAL OS VERSION INFORMATION :
      Microsoft Windows [Version 6.1.7601]

      EXTRA RELEVANT SYSTEM CONFIGURATION :
      [insignificant]

      A DESCRIPTION OF THE PROBLEM :
      Trying to drag and drop from a SWT control to the FXCanvas succeeds only once, because of a false assertion in class com.sun.javafx.tk.quantum.EmbeddedSceneDT [line 62]: assert dragSource == null;

      The instance of EmbeddedSceneDT is once initialized and then recycled, but dragSource gets never set to null after a DnD operation.

       

      STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
      Craete a small SWT / JavaFX hybrid with DnD Support from a SWT control to JavaFX. Enable assertions and try DnD more once.
      After the first DnD operation all subsequent one will fail due to the false assertion.

      EXPECTED VERSUS ACTUAL BEHAVIOR :
      EXPECTED -
      no assertion fault after multiple DnD operations
      ACTUAL -
      after the first DnD allsubsequnt attempts fail

      ERROR MESSAGES/STACK TRACES THAT OCCUR :
      java.lang.AssertionError
      at com.sun.javafx.tk.quantum.EmbeddedSceneDT.lambda$handleDragEnter$317(EmbeddedSceneDT.java:62)
      at com.sun.javafx.tk.quantum.EmbeddedSceneDnD.executeOnFXThread(EmbeddedSceneDnD.java:101)
      ...

      REPRODUCIBILITY :
      This bug can be reproduced always.

      ---------- BEGIN SOURCE ----------
      [not applicable]
      ---------- END SOURCE ----------

      CUSTOMER SUBMITTED WORKAROUND :
      disable assertions, which is undesirable for me

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              • Assignee:
                pmangal Priyanka Mangal (Inactive)
                Reporter:
                webbuggrp Webbug Group
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                Dates

                • Created:
                  Updated:
                  Resolved: