Examples with IFormattingContext org.eclipse.jface.text.formatter.IFormattingContext used on opensource projects

Example 1 with IFormattingContext

use of org.eclipse.jface.text.formatter.IFormattingContext in project tdi-studio-se by Talend.

the class JavaProcessor method formatCode.

/**
     * DOC nrousseau Comment method "formatCode".
     *
     * from SourceViewer.doOperation for FORMAT.
     *
     * @param processCode
     * @return
     */
@SuppressWarnings({ "unchecked" })
private String formatCode(String processCode) {
    // we cannot make calls to Ui in headless mode
    if (ProcessorUtilities.isExportConfig() || CommonsPlugin.isHeadless()) {
        // nothing to do
        return processCode;
    }
    final IDocument document = new Document(processCode);
    JavaTextTools tools = JavaPlugin.getDefault().getJavaTextTools();
    tools.setupJavaDocumentPartitioner(document, IJavaPartitions.JAVA_PARTITIONING);
    IFormattingContext context = null;
    DocumentRewriteSession rewriteSession = null;
    if (document instanceof IDocumentExtension4) {
        rewriteSession = ((IDocumentExtension4) document).startRewriteSession(DocumentRewriteSessionType.SEQUENTIAL);
    }
    try {
        final String rememberedContents = document.get();
        try {
            final MultiPassContentFormatter formatter = new MultiPassContentFormatter(IJavaPartitions.JAVA_PARTITIONING, IDocument.DEFAULT_CONTENT_TYPE);
            formatter.setMasterStrategy(new JavaFormattingStrategy());
            // formatter.setSlaveStrategy(new CommentFormattingStrategy(),
            // IJavaPartitions.JAVA_DOC);
            // formatter.setSlaveStrategy(new CommentFormattingStrategy(),
            // IJavaPartitions.JAVA_SINGLE_LINE_COMMENT);
            // formatter.setSlaveStrategy(new CommentFormattingStrategy(),
            // IJavaPartitions.JAVA_MULTI_LINE_COMMENT);
            context = new FormattingContext();
            context.setProperty(FormattingContextProperties.CONTEXT_DOCUMENT, Boolean.TRUE);
            Map<String, String> preferences;
            if (this.getTalendJavaProject() == null) {
                preferences = new HashMap<String, String>(JavaCore.getOptions());
            } else {
                // use project options
                preferences = new HashMap<String, String>(this.getTalendJavaProject().getJavaProject().getOptions(true));
            }
            context.setProperty(FormattingContextProperties.CONTEXT_PREFERENCES, preferences);
            formatter.format(document, context);
        } catch (RuntimeException x) {
            // fire wall for
            // https://bugs.eclipse.org/bugs/show_bug.cgi?id=47472
            // if something went wrong we undo the changes we just did
            // TODO to be removed after 3.0 M8
            document.set(rememberedContents);
            throw x;
        }
    } finally {
        if (rewriteSession != null && document instanceof IDocumentExtension4) {
            ((IDocumentExtension4) document).stopRewriteSession(rewriteSession);
        }
        if (context != null) {
            context.dispose();
        }
    }
    return document.get();
}