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https://issues.apache.org/jira/browse/NETBEANS-5596?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
ASF GitHub Bot updated NETBEANS-5596:
-------------------------------------
Labels: pull-request-available (was: )
> No syntax coloring with the Java Editor Kit
> -------------------------------------------
>
> Key: NETBEANS-5596
> URL: https://issues.apache.org/jira/browse/NETBEANS-5596
> Project: NetBeans
> Issue Type: Bug
> Components: java - Editor
> Affects Versions: 12.3
> Reporter: Nicolas Baumann
> Assignee: Nicolas Baumann
> Priority: Minor
> Labels: pull-request-available
> Time Spent: 10m
> Remaining Estimate: 0h
>
> I think this is somewhere between a bug and an improvement request because I
> have no doubt that syntax coloring works well inside the IDE but my issue
> happens when I use the java editor as a dependency for a plain java
> application rather than a netbeans platform application.
> I have to activate syntax coloring programatically with the line of code
> below whereas it should be done automatically based on the mime type of the
> editor which is text/x-java.
> {code:java}
> doc.putProperty(Language.class, JavaTokenId.language()){code}
> There are some cases where the editor is not accessible due to member
> visibility, for example with the the DiffView from org-netbeans-modules-diff.
> Here is a mininal code sample to reproduce :
>
> {code:java}
> final JFrame f = new JFrame("JAVA Syntax Coloring");
> final JEditorPane pane = new JEditorPane();
>
> pane.setEditorKit(CloneableEditorSupport.getEditorKit(JavaKit.JAVA_MIME_TYPE));
> //pane.getDocument().putProperty(Language.class, JavaTokenId.language()); //
> activates syntax coloring
> try {
> SwingUtilities.invokeAndWait(() -> {
> try {
> pane.getDocument().insertString(0, "public class Hello {}", null);
> } catch (final BadLocationException e) {
> e.printStackTrace();
> }
> });
> } catch (final Exception e) {
> e.printStackTrace();
> }
> f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
> f.getContentPane().add(new JScrollPane(pane));
> f.setSize(400, 300);
> f.setVisible(true);
> {code}
>
> From the javadoc :
> [https://bits.netbeans.org/dev/javadoc/org-netbeans-modules-lexer/org/netbeans/api/lexer/TokenHierarchy.html#get-D-]
> _Get or create mutable token hierarchy for the given swing document._
> _The document may define a top language by doing
> {{doc.putProperty("mimeType", mimeType)}} (a language defined for the given
> mime type will be searched and used) or by doing
> {{putProperty(Language.class, language)}}. Otherwise the returned hierarchy
> will be inactive and
> [{{TokenHierarchy.tokenSequence()}}|https://bits.netbeans.org/dev/javadoc/org-netbeans-modules-lexer/org/netbeans/api/lexer/TokenHierarchy.html#tokenSequence--]
> will return null._
> In my case setting the mimeType property on the document was not enough to
> activate the token hierarchy for syntax coloring. Only setting the
> Language.class property resulted in activating it. But it's not possible with
> an editor that I did not create myself and which I cannot have access to.
>
> Suggestion :
> In the JavaKit class there is method createDefaultDocument() which creates a
> default document. Is it possible for you to set the Langage.class property
> here ?
>
> Here is a workaround that I use to activate syntax coloring in the diff view.
> In the file org/netbeans/modules/java/editor/resources/layer.xml :
> {code:java}
> <file name="EditorKit.instance">
> <attr name="instanceClass" stringvalue="my.own.pckg.SyntaxColoringJavaKit"/>
> </file>{code}
>
>
> {code:java}
> public class SyntaxColoringJavaKit extends
> org.netbeans.modules.editor.java.JavaKit {
> private static final long serialVersionUID = 1L;
> @Override
> public Document createDefaultDocument() {
> final Document document = super.createDefaultDocument();
> document.putProperty(Language.class, JavaTokenId.language());
> return document;
> }
>
> }
> {code}
>
> Below the maven dependencies that I use in this example :
> {code:java}
> <dependencies>
> <dependency>
> <groupId>org.netbeans.modules</groupId>
> <artifactId>org-netbeans-modules-editor-mimelookup-impl</artifactId>
> <version>RELEASE123</version>
> </dependency>
> <dependency>
> <groupId>org.netbeans.modules</groupId>
> <artifactId>org-netbeans-modules-editor-plain</artifactId>
> <version>RELEASE123</version>
> </dependency>
> <dependency>
> <groupId>org.netbeans.modules</groupId>
> <artifactId>org-netbeans-modules-java-editor</artifactId>
> <version>RELEASE123</version> </dependency>
> <dependency>
> <groupId>org.frgaal</groupId>
> <artifactId>compiler</artifactId>
> <version>14.0.0</version>
> </dependency>
> </dependencies>{code}
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