Name: rmT116609 Date: 10/25/2001


java version "1.4.0-beta2"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.0-beta2-b77)
Java HotSpot(TM) Client VM (build 1.4.0-beta2-b77, mixed mode)

With JDK 1.4beta2 the following error is thrown (and the textpane does
not become visible):

Exception in thread "main" java.lang.Error: should not happen: class
LexTableView
        at javax.swing.text.BoxView.baselineLayout(Unknown Source)
        at javax.swing.text.ParagraphView$Row.layoutMinorAxis(Unknown
Source)
        at javax.swing.text.BoxView.setSpanOnAxis(Unknown Source)
        at javax.swing.text.BoxView.layout(Unknown Source)
        at javax.swing.text.BoxView.setSize(Unknown Source)
        at javax.swing.text.BoxView.updateChildSizes(Unknown Source)
        at javax.swing.text.BoxView.setSpanOnAxis(Unknown Source)
        at javax.swing.text.BoxView.layout(Unknown Source)
        at javax.swing.text.FlowView.layout(Unknown Source)
        at javax.swing.text.BoxView.setSize(Unknown Source)
        at javax.swing.text.BoxView.updateChildSizes(Unknown Source)
        at javax.swing.text.BoxView.setSpanOnAxis(Unknown Source)
        at javax.swing.text.BoxView.layout(Unknown Source)
        at javax.swing.text.BoxView.setSize(Unknown Source)
        at javax.swing.plaf.basic.BasicTextUI$RootView.setSize(Unknown
Source)
        at javax.swing.plaf.basic.BasicTextUI.getPreferredSize(Unknown
Source)
        at javax.swing.JComponent.getPreferredSize(Unknown Source)
        at javax.swing.JEditorPane.getPreferredSize(Unknown Source)
        at javax.swing.ScrollPaneLayout.layoutContainer(Unknown Source)
        at java.awt.Container.layout(Unknown Source)
        at java.awt.Container.doLayout(Unknown Source)
        at java.awt.Container.validateTree(Unknown Source)
        at java.awt.Container.validateTree(Unknown Source)
        at java.awt.Container.validateTree(Unknown Source)
        at java.awt.Container.validateTree(Unknown Source)
        at java.awt.Container.validateTree(Unknown Source)
        at java.awt.Container.validate(Unknown Source)
        at java.awt.Window.show(Unknown Source)
        at java.awt.Component.show(Unknown Source)
        at java.awt.Component.setVisible(Unknown Source)
        at Test.test1(Unknown Source)
        at Test.main(Unknown Source)

I made up a testcase and included it as attachment "testcase.zip"
the main class is Test.java. Also included is "expected.gif", wich
shows the result of the program (win2k, jdk1.3).

The expected and actual behaviour is as follows:
when executing
java Test
in classes directory.

Test.main creates a JTextPane, with a customized EditorKit and Document.
Then it creates an element structure, and dumps the Document to System.out.
Up to this point, the program behaves identically with 1.3 and 1.4beta.

When the JTextPane is made visible, it should look like "expected.gif"
(and does with 1.3).

I guess, that javax.swing.text.TableView has not yet been updated since 1.3 to meet the implementation changes of layout in CompositeView, whereas
javax.swing.text.html.TableView for instance has been. The code, that causes
the Exception worked fine with JDK 1.3.0, 1.3.1_01.

Maybe I should add, that the testcase I provided is far from well-designed,
but the "hacks" are only used to establish the document structure, which
works well with 1.4, so I'm quite shure, that the problem arises not from my
code.


Please also see:

http://forum.java.sun.com/thread.jsp?forum=57&thread=181621
(Review ID: 134031)
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