private static final String PREFIX_SUFFIX_PROPERTY= "org.eclipse.jdt.internal.junit.ui.CompareResultDialog.prefixSuffix"; //$NON-NLS-1$

private static class CompareResultMergeViewer extends TextMergeViewer {

private CompareResultMergeViewer(Composite parent, int style, CompareConfiguration configuration) {

super(parent, style, configuration);

}

protected void createControls(Composite composite) {

super.createControls(composite);

}

protected void configureTextViewer(TextViewer textViewer) {

if (textViewer instanceof SourceViewer) {

int[] prefixSuffixOffsets= (int[]) getCompareConfiguration().getProperty(PREFIX_SUFFIX_PROPERTY);

((SourceViewer)textViewer).configure(new CompareResultViewerConfiguration(prefixSuffixOffsets));

}

}

}

private static class CompareResultViewerConfiguration extends SourceViewerConfiguration {

private static class SimpleDamagerRepairer implements IPresentationDamager, IPresentationRepairer {

private IDocument fDocument;

private final int[] fPrefixSuffixOffsets2;

public SimpleDamagerRepairer(int[] prefixSuffixOffsets) {

fPrefixSuffixOffsets2= prefixSuffixOffsets;

}

public void setDocument(IDocument document) {

fDocument= document;

}

public IRegion getDamageRegion(ITypedRegion partition, DocumentEvent event, boolean changed) {

return new Region(0, fDocument.getLength());

}

public void createPresentation(TextPresentation presentation, ITypedRegion damage) {

presentation.setDefaultStyleRange(new StyleRange(0, fDocument.getLength(), null, null));

int prefix= fPrefixSuffixOffsets2[0];

int suffix= fPrefixSuffixOffsets2[1];

TextAttribute attr= new TextAttribute(Display.getDefault().getSystemColor(SWT.COLOR_RED), null, SWT.BOLD);

presentation.addStyleRange(new StyleRange(prefix, fDocument.getLength()-suffix-prefix, attr.getForeground(), attr.getBackground(), attr.getStyle()));

}

}

private final int[] fPrefixSuffixOffsets;

public CompareResultViewerConfiguration(int[] prefixSuffixOffsets) {

fPrefixSuffixOffsets= prefixSuffixOffsets;

}

public IPresentationReconciler getPresentationReconciler(ISourceViewer sourceViewer) {

PresentationReconciler reconciler= new PresentationReconciler();

SimpleDamagerRepairer dr= new SimpleDamagerRepairer(fPrefixSuffixOffsets);

reconciler.setDamager(dr, IDocument.DEFAULT_CONTENT_TYPE);

reconciler.setRepairer(dr, IDocument.DEFAULT_CONTENT_TYPE);

return reconciler;

}

}

private static class CompareElement implements ITypedElement, IEncodedStreamContentAccessor {

private String fContent;

public CompareElement(String content) {

fContent= content;

}

public String getName() {

return "<no name>"; //$NON-NLS-1$

}

public Image getImage() {

return null;

}

public String getType() {

return "txt"; //$NON-NLS-1$

}

public InputStream getContents() {

try {

return new ByteArrayInputStream(fContent.getBytes("UTF-8")); //$NON-NLS-1$

} catch (UnsupportedEncodingException e) {

return new ByteArrayInputStream(fContent.getBytes());

}

}

public String getCharset() throws CoreException {

return "UTF-8"; //$NON-NLS-1$

}

}

private TextMergeViewer fViewer;

private String fExpected;

private String fActual;

private String fTestName;

/**

private final int[] fPrefixSuffix= new int[2];

public CompareResultDialog(Shell parentShell, String element) {

super(parentShell);

fExpected = element;

fActual = element;

setShellStyle((getShellStyle() & ~SWT.APPLICATION_MODAL) | SWT.TOOL);

}

/* (non-Javadoc)

protected boolean isResizable() {

return true;

}

protected void configureShell(Shell newShell) {

super.configureShell(newShell);

}

protected Control createDialogArea(Composite parent) {

Composite composite = (Composite)super.createDialogArea(parent);

GridLayout layout= new GridLayout();

layout.numColumns= 1;

composite.setLayout(layout);

CompareViewerPane pane = new CompareViewerPane(composite, SWT.BORDER | SWT.FLAT);

pane.setText(fTestName);

GridData data= new GridData(GridData.FILL_HORIZONTAL | GridData.FILL_VERTICAL);

data.widthHint= convertWidthInCharsToPixels(120);

data.heightHint= convertHeightInCharsToPixels(13);

pane.setLayoutData(data);

Control previewer= createPreviewer(pane);

pane.setContent(previewer);

GridData gd= new GridData(GridData.FILL_BOTH);

previewer.setLayoutData(gd);

applyDialogFont(parent);

return composite;

}

private Control createPreviewer(Composite parent) {

final CompareConfiguration compareConfiguration= new CompareConfiguration();

compareConfiguration.setLeftEditable(false);

compareConfiguration.setRightEditable(false);

compareConfiguration.setProperty(CompareConfiguration.IGNORE_WHITESPACE, Boolean.FALSE);

compareConfiguration.setProperty(PREFIX_SUFFIX_PROPERTY, fPrefixSuffix);

fViewer= new CompareResultMergeViewer(parent, SWT.NONE, compareConfiguration);

setCompareViewerInput();

Control control= fViewer.getControl();

control.addDisposeListener(new DisposeListener() {

public void widgetDisposed(DisposeEvent e) {

compareConfiguration.dispose();

}

});

return control;

}

private void setCompareViewerInput() {

if (! fViewer.getControl().isDisposed())

fViewer.setInput(new DiffNode(new CompareElement(fExpected), new CompareElement(fActual)));

}

public void setInput(String failedTest) {

setCompareViewerInput();

}