org.eclipse.xtext.ui.editor.folding.IFoldingRegionProvider Java Examples

/**
 * Compute folding regions for the dot attribute value if possible.
 *
 * @param dotAttribute
 * @param foldingRegionAcceptor
 */
private void computeDotAttributeValueFolding(Attribute attribute,
		IFoldingRegionAcceptor<ITextRegion> foldingRegionAcceptor) {
	// The folding should be able to cope with incomplete statements
	if (attribute.getValue() != null
			&& attribute.getValue().getType() == ID.Type.HTML_STRING) {
		String htmlLabelValue = attribute.getValue().toValue();
		Injector injector = DotActivator.getInstance().getInjector(
				DotActivator.ORG_ECLIPSE_GEF_DOT_INTERNAL_LANGUAGE_DOTHTMLLABEL);
		IFoldingRegionProvider htmlLabelFoldingRegionProvider = injector
				.getInstance(IFoldingRegionProvider.class);

		IXtextDocument xtextDocument = null;
		try {
			xtextDocument = DotEditorUtils.getDocument(injector,
					htmlLabelValue);
		} catch (Exception e) {
			DotActivatorEx.logError(e);
		}

		if (xtextDocument != null) {
			Collection<FoldedPosition> htmlLabelFoldingRegions = htmlLabelFoldingRegionProvider
					.getFoldingRegions(xtextDocument);
			for (Iterator<FoldedPosition> iterator = htmlLabelFoldingRegions
					.iterator(); iterator.hasNext();) {
				FoldedPosition htmlFoldedPosition = iterator.next();
				int attributeValueStartOffset = getAttributeValueStartOffset(
						attribute);
				foldingRegionAcceptor.accept(
						attributeValueStartOffset
								+ htmlFoldedPosition.getOffset(),
						htmlFoldedPosition.getLength() - 1);
			}
		}
	}
}
 

/**
 * Verifies that FoldedPositions are valid.
 * If the assertion fails that is probably due to an ITextRegion.EMPTY_REGION being provided for the object's significant text region.
 */
@BugTest("ACF-2605")
public void testFoldedPositions() {
  Collection<FoldedPosition> foldingRegions = getXtextTestUtil().get(IFoldingRegionProvider.class).getFoldingRegions(getDocument());
  for (DefaultFoldedPosition foldedPosition : Iterables.filter(foldingRegions, DefaultFoldedPosition.class)) {
    try {
      Assert.assertFalse("Illegal significant region for FoldedPosition " + foldedPosition, foldedPosition.computeCaptionOffset(getDocument()) < 0);
      /* If the above assertion fails that is probably due to an ITextRegion.EMPTY_REGION being provided for the object's significant text region. */
    } catch (BadLocationException e) {
      fail("Bad location for FoldedPosition: " + e.getMessage());
    }
  }
}
 

public Class<? extends IFoldingRegionProvider> bindIFoldingRegionProvider() {
	return XtextGrammarFoldingRegionProvider.class;
}
 

public Class<? extends IFoldingRegionProvider> bindIFoldingRegionProvider() {
	return StatemachineFoldingRegionProvider.class;
}
 

public Class<? extends IFoldingRegionProvider> bindFoldingRegionProvider() {
	return PureXbaseUiModule.NoFolding.class;
}
 

public Class<? extends IFoldingRegionProvider> bindIFoldingRegionProvider() {
	return DotHtmlLabelFoldingRegionProvider.class;
}
 

public Class<? extends IFoldingRegionProvider> bindIFoldingRegionProvider() {
	return DotFoldingRegionProvider.class;
}
 

public Class<? extends IFoldingRegionProvider> bindIFoldingRegionProvider() {
	return XtendFoldingRegionProvider.class;
}
 

public Class<? extends IFoldingRegionProvider> bindFoldingRegionProvider() {
	return GamaFoldingRegionProvider.class;
}