import org.eclipse.compare.contentmergeviewer.TextMergeViewer; //导入依赖的package包/类
private Control createPreviewer(Composite parent) {
	final CompareConfiguration compareConfiguration = new CompareConfiguration();
	compareConfiguration.setLeftLabel("Original " + docTypeName);
	compareConfiguration.setLeftEditable(false);
	compareConfiguration.setRightLabel("Updated " + docTypeName);
	compareConfiguration.setRightEditable(false);
	compareConfiguration.setProperty(CompareConfiguration.IGNORE_WHITESPACE, Boolean.FALSE);
	compareConfiguration.setProperty(PREFIX_SUFFIX_PROPERTY, fPrefixSuffix);

	fViewer = new TextMergeViewer(parent, SWT.NONE, compareConfiguration);
	// add initial input in order to avoid problems when disposing the viewer later:
	fViewer.setInput(new DiffNode(new TargetElementFromString(""), new TargetElementFromString("")));

	Control control = fViewer.getControl();
	control.addDisposeListener(new DisposeListener() {
		@Override
		public void widgetDisposed(DisposeEvent e) {
			compareConfiguration.dispose();
		}
	});
	return control;
}
 

import org.eclipse.compare.contentmergeviewer.TextMergeViewer; //导入依赖的package包/类
private Control createPreviewer(Composite parent) {
	final CompareConfiguration compareConfiguration = new CompareConfiguration();
	compareConfiguration.setLeftLabel("Original package.json");
	compareConfiguration.setLeftEditable(false);
	compareConfiguration.setRightLabel("Merged package.json");
	compareConfiguration.setRightEditable(false);
	compareConfiguration.setProperty(CompareConfiguration.IGNORE_WHITESPACE, Boolean.FALSE);

	fViewer = new TextMergeViewer(parent, SWT.NONE, compareConfiguration);
	// add initial input in order to avoid problems when disposing the viewer later:
	fViewer.setInput(new DiffNode(new DiffElementFromString(""), new DiffElementFromString("")));

	Control control = fViewer.getControl();
	control.addDisposeListener(new DisposeListener() {
		@Override
		public void widgetDisposed(DisposeEvent e) {
			compareConfiguration.dispose();
		}
	});
	return control;
}