org.eclipse.jface.viewers.IBaseLabelProvider Java Examples

/**
 * Creates a default table viewer with the given properties. The properties are
 * also used to create columns where each column label is the respective
 * property of this column. The viewer is configured in the following way:
 * <ul>
 * <li>content provider = {@link ArrayContentProvider}
 * <li>lines and header are visible
 * <li>grid data with horizontal and vertical fill
 * 
 */
public static TableViewer createViewer(Composite parent, String[] properties,
		IBaseLabelProvider labelProvider) {
	TableViewer viewer = new TableViewer(parent,
			SWT.BORDER | SWT.FULL_SELECTION | SWT.VIRTUAL | SWT.MULTI);
	viewer.setContentProvider(new ArrayContentProvider());
	boolean hasColumns = properties != null && properties.length > 0;
	Table table = viewer.getTable();
	table.setLinesVisible(hasColumns);
	table.setHeaderVisible(hasColumns);
	if (hasColumns) {
		createColumns(viewer, properties, labelProvider);
	}
	if (labelProvider != null) {
		viewer.setLabelProvider(labelProvider);
	}
	GridData data = UI.gridData(table, true, true);
	data.minimumHeight = 120;
	// workaround for this bug:
	// https://bugs.eclipse.org/bugs/show_bug.cgi?id=215997
	Point p = parent.computeSize(SWT.DEFAULT, SWT.DEFAULT);
	data.heightHint = p.y < 120 ? 120 : p.y;
	return viewer;
}
 

private String getLabel(final Viewer viewer, final Object e1) {
	String name1;
	if (viewer == null || !(viewer instanceof ContentViewer)) {
		name1 = e1.toString();
	} else {
		final IBaseLabelProvider prov = ((ContentViewer) viewer).getLabelProvider();
		if (prov instanceof ILabelProvider) {
			final ILabelProvider lprov = (ILabelProvider) prov;
			name1 = lprov.getText(e1);
		} else {
			name1 = e1.toString();
		}
	}
	if (name1 == null) {
		name1 = "";//$NON-NLS-1$
	}
	return name1;
}
 

public static IBaseLabelProvider getPostQualifiedLabelProvider() {
	return new DelegatingStyledCellLabelProvider(new JavaElementLabelProvider(
			JavaElementLabelProvider.SHOW_POST_QUALIFIED | JavaElementLabelProvider.SHOW_SMALL_ICONS)) {
		@Override
		protected StyledString getStyledText(Object element) {
			String nameWithQualifier = getStyledStringProvider().getStyledText(element).getString() + " ";
			int separatorIndex = nameWithQualifier.indexOf('-');

			if (separatorIndex == -1)
				return new StyledString(nameWithQualifier);

			StyledString name = new StyledString(nameWithQualifier.substring(0, separatorIndex));
			String qualifier = nameWithQualifier.substring(separatorIndex);
			return name.append(new StyledString(qualifier, StyledString.QUALIFIER_STYLER));
		};
	};
}
 

private String getNonJavaElementLabel(Viewer viewer, Object element) {
	// try to use the workbench adapter for non - java resources or if not available, use the viewers label provider
	if (element instanceof IResource) {
		return ((IResource) element).getName();
	}
	if (element instanceof IStorage) {
		return ((IStorage) element).getName();
	}
	if (element instanceof IAdaptable) {
		IWorkbenchAdapter adapter= (IWorkbenchAdapter) ((IAdaptable) element).getAdapter(IWorkbenchAdapter.class);
		if (adapter != null) {
			return adapter.getLabel(element);
		}
	}
	if (viewer instanceof ContentViewer) {
		IBaseLabelProvider prov = ((ContentViewer) viewer).getLabelProvider();
		if (prov instanceof ILabelProvider) {
			return ((ILabelProvider) prov).getText(element);
		}
	}
	return null;
}
 

@Override
public int compare(Viewer viewer, Object e1, Object e2) {

       int cat1 = category(e1);
       int cat2 = category(e2);

       if (cat1 != cat2)
           return cat1 - cat2;

       if (cat1 == ATTRIBUTE || cat1 == CONTAINER_ENTRY) {
       	return 0; // do not sort attributes or container entries
       }

	if (viewer instanceof ContentViewer) {
		IBaseLabelProvider prov = ((ContentViewer) viewer).getLabelProvider();
           if (prov instanceof ILabelProvider) {
               ILabelProvider lprov = (ILabelProvider) prov;
               String name1 = lprov.getText(e1);
               String name2 = lprov.getText(e2);
               return getComparator().compare(name1, name2);
           }
	}
	return 0;
}
 

protected void doUpdateCell(int index, CContainerCell cell, Object element, String[] properties) {
	IBaseLabelProvider prov = (IBaseLabelProvider) getLabelProvider();
	if(prov != null) {
		Color background = null;
		Color foreground = null;
		if(prov instanceof ITableColorProvider) {
			background = ((ITableColorProvider) prov).getBackground(element, index);
			foreground = ((ITableColorProvider) prov).getForeground(element, index);
		} else if(prov instanceof IColorProvider) {
			background = ((IColorProvider) prov).getBackground(element);
			foreground = ((IColorProvider) prov).getForeground(element);
		}
		if(background != null) cell.setCellBackground(background);
		if(foreground != null) cell.setCellForeground(foreground);
		
		// TODO doUpdateItem - set fonts...
	}
}
 

protected void doUpdateCell(int index, CContainerCell cell, Object element, String[] properties) {
	super.doUpdateCell(index, cell, element, properties);
	
	IBaseLabelProvider prov = (IBaseLabelProvider) getLabelProvider();
	if(prov != null) {
		CTableTreeCell cttc = (CTableTreeCell) cell;
		String text = null;
		if(prov instanceof ICContainerLabelProvider) {
			cttc.setImages(((ICContainerLabelProvider) prov).getColumnImages(element, index));
			text = ((ITableLabelProvider) prov).getColumnText(element, index);
		} else if(prov instanceof ITableLabelProvider) {
			cttc.setImage(((ITableLabelProvider) prov).getColumnImage(element, index));
			text = ((ITableLabelProvider) prov).getColumnText(element, index);
		} else if(prov instanceof ILabelProvider) {
			cttc.setImage(((ILabelProvider) prov).getImage(element));
			text = ((ILabelProvider) prov).getText(element);
		}
		if(text == null) text = ""; //$NON-NLS-1$
		cttc.setText(text);
	}
}
 

public int compare( Viewer viewer, Object e1, Object e2 )
{
	IBaseLabelProvider provider = null;
	if ( viewer instanceof TreeViewer )
	{
		provider =( ( TreeViewer )viewer ).getLabelProvider( );
	}
	if ( provider != null && provider instanceof SampleReportsExplorerProvider )
	{
		if( ( ( SampleReportsExplorerProvider )provider ).getText( e1 ).equals( "Contribute Samples" ) ) //$NON-NLS-1$
		{
			return 1;
		}
		else if ( ( ( SampleReportsExplorerProvider )provider ).getText( e2 ).equals( "Contribute Samples" ) ) //$NON-NLS-1$
		{
			return -1;
		}
	}
	return 0;
}
 

public static TreeViewer createViewer(
		Composite parent, String[] headers, IBaseLabelProvider label) {
	TreeViewer viewer = new TreeViewer(parent,
			SWT.BORDER | SWT.FULL_SELECTION | SWT.VIRTUAL | SWT.MULTI);
	Tree tree = viewer.getTree();
	boolean hasColumns = headers != null && headers.length > 0;
	tree.setLinesVisible(hasColumns);
	tree.setHeaderVisible(hasColumns);
	if (hasColumns) {
		createColumns(viewer, headers, label);
	}
	if (label != null) {
		viewer.setLabelProvider(label);
	}
	GridData data = UI.gridData(tree, true, true);
	data.minimumHeight = 120;
	Point p = parent.computeSize(SWT.DEFAULT, SWT.DEFAULT);
	data.heightHint = p.y < 120 ? 120 : p.y;
	return viewer;
}
 

private int compareColumn(final Viewer viewer, final Object a, final Object b, final int columnNumber) {
	// if (columnNumber == CATEGORY_COLUMN) {
	// return sortUser(a, b);
	// }
	IBaseLabelProvider baseLabel = ((TreeViewer) viewer).getLabelProvider();
	if (baseLabel instanceof ITableLabelProvider) {
		ITableLabelProvider tableProvider = (ITableLabelProvider) baseLabel;
		String e1p = tableProvider.getColumnText(a, columnNumber);
		String e2p = tableProvider.getColumnText(b, columnNumber);
		if (e1p != null && e2p != null) {
			return getComparator().compare(e1p, e2p);
		}
	}
	return 0;
}
 

@Override
public void setLabelProvider(IBaseLabelProvider labelProvider) {
   if (!(labelProvider instanceof IXViewerLabelProvider)) {
      throw new IllegalArgumentException(
         "Label Provider must extend XViewerLabelProvider or XViewerStyledTextLabelProvider"); //$NON-NLS-1$
   }
   super.setLabelProvider(labelProvider);
}
 

public XCheckFilteredTreeDialog(String dialogTitle, String dialogMessage, PatternFilter patternFilter, IContentProvider contentProvider, IBaseLabelProvider labelProvider, ViewerSorter viewerSorter) {
   super(Display.getCurrent().getActiveShell(), dialogTitle, null, dialogMessage, MessageDialog.NONE, new String[] {
 	  XViewerText.get("button.ok"), XViewerText.get("button.cancel")}, 0); //$NON-NLS-1$ //$NON-NLS-2$
   this.contentProvider = contentProvider;
   this.labelProvider = labelProvider;
   this.patternFilter = patternFilter;
   this.viewerSorter = viewerSorter;
   setShellStyle(getShellStyle() | SWT.RESIZE);
}
 

/**
 * Set the label provider for this viewer. Optional the lable provider may implement {@link IColorProvider} and {@link IToolTipProvider}.
 *
 * @param labelProvider
 *            provider implementing {@link ITimelineLabelProvider}
 */
@Override
public void setLabelProvider(IBaseLabelProvider labelProvider) {
	if (!(labelProvider instanceof ITimelineLabelProvider))
		throw new IllegalArgumentException("Label provider needs to implement ITimelineLabelProvider");

	super.setLabelProvider(labelProvider);
}
 

@Override
public int compare(Viewer viewer, Object e1, Object e2) {

	if (viewer instanceof TableViewer) {
		IBaseLabelProvider baseLabel = ((TableViewer) viewer).getLabelProvider();

		String left = ((ITableLabelProvider) baseLabel).getColumnText(e1, fSortColumn);
		String right = ((ITableLabelProvider) baseLabel).getColumnText(e2, fSortColumn);
		int sortResult = getComparator().compare(left != null ? left : "", right != null ? right : ""); //$NON-NLS-1$ //$NON-NLS-2$
		return sortResult * fSortOrder;
	}

	return super.compare(viewer, e1, e2);
}
 

@Override
public int compare(Viewer viewer, Object e1, Object e2) {

	if (viewer instanceof TableViewer) {
		IBaseLabelProvider baseLabel = ((TableViewer) viewer).getLabelProvider();

		String left = ((ITableLabelProvider) baseLabel).getColumnText(e1, fSortColumn);
		String right = ((ITableLabelProvider) baseLabel).getColumnText(e2, fSortColumn);
		int sortResult = getComparator().compare(left != null ? left : "", right != null ? right : "");
		return sortResult * fSortOrder;
	}

	return super.compare(viewer, e1, e2);
}
 

public ListDialogSortableFiltered(String dialogTitle, String dialogMessage, PatternFilter patternFilter, IContentProvider contentProvider, IBaseLabelProvider labelProvider, ViewerSorter viewerSorter) {
   super(Display.getCurrent().getActiveShell(), dialogTitle, null, dialogMessage, MessageDialog.NONE,
      new String[] {XViewerText.get("button.ok"), XViewerText.get("button.cancel")}, 0); //$NON-NLS-1$ //$NON-NLS-2$
   this.contentProvider = contentProvider;
   this.labelProvider = labelProvider;
   this.patternFilter = patternFilter;
   this.viewerSorter = viewerSorter;
   setShellStyle(getShellStyle() | SWT.RESIZE);
}
 

public NodeListSourcesControl(Composite parent) {
  super(parent);
  listProvider = new ListContentProvider<IResource>(this);
  setContentProvider(listProvider);
  IBaseLabelProvider labelProvider = new PartLabelProvider();
  setLabelProvider(labelProvider );
}
 

public void setLabelProvider(IBaseLabelProvider labelProvider) {
	if (!(labelProvider instanceof ILabelProvider)) {
		throw new IllegalArgumentException(
				"label provider must be of type ILabelProvider");
	}
	super.setLabelProvider(labelProvider);
}
 

@Override
protected IBaseLabelProvider getLabelProvider() {
	return new BaseLabelProvider() {
		@Override
		public String getText(Object o) {
			if (o instanceof NAHandling)
				return Labels.of((NAHandling) o);
			if (o instanceof AggregationType)
				return Labels.of((AggregationType) o);
			if (o instanceof RoundingMode)
				return Labels.of((RoundingMode) o);
			return super.getText(o);
		}
	};
}
 

public static IBaseLabelProvider getInstance(){
	synchronized (LabelProvider.class) {
		if (instance == null) {
			instance = new ILocalizedEnumLabelProvider();
		}
		return instance;
	}
}
 

@SuppressWarnings("unchecked")
private int compareColumn(final Viewer viewer, final Object a, final Object b, final int columnNumber) {
	IBaseLabelProvider baseLabel = ((TreeViewer) viewer).getLabelProvider();
	if (baseLabel instanceof ITableLabelProvider) {
		ITableLabelProvider tableProvider = (ITableLabelProvider) baseLabel;
		String e1p = tableProvider.getColumnText(a, columnNumber);
		String e2p = tableProvider.getColumnText(b, columnNumber);
		if (e1p != null && e2p != null) {
			return getComparator().compare(e1p, e2p);
		}
	}
	return 0;
}
 

private int compareColumn(final Viewer viewer, final Object a, final Object b, final int columnNumber) {
	// if (columnNumber == CATEGORY_COLUMN) {
	// return sortUser(a, b);
	// }
	IBaseLabelProvider baseLabel = ((TreeViewer) viewer).getLabelProvider();
	if (baseLabel instanceof ITableLabelProvider) {
		ITableLabelProvider tableProvider = (ITableLabelProvider) baseLabel;
		String e1p = tableProvider.getColumnText(a, columnNumber);
		String e2p = tableProvider.getColumnText(b, columnNumber);
		if (e1p != null && e2p != null) {
			return getComparator().compare(e1p, e2p);
		}
	}
	return 0;
}
 

@SuppressWarnings("unchecked")
private int compareColumn(final Viewer viewer, final Object a, final Object b, final int columnNumber) {
	IBaseLabelProvider baseLabel = ((TreeViewer) viewer).getLabelProvider();
	if (baseLabel instanceof ITableLabelProvider) {
		ITableLabelProvider tableProvider = (ITableLabelProvider) baseLabel;
		String e1p = tableProvider.getColumnText(a, columnNumber);
		String e2p = tableProvider.getColumnText(b, columnNumber);
		if (e1p != null && e2p != null) {
			return getComparator().compare(e1p, e2p);
		}
	}
	return 0;
}
 

private int compareColumn(final Viewer viewer, final Object a, final Object b, final int columnNumber) {
	// if (columnNumber == CATEGORY_COLUMN) {
	// return sortUser(a, b);
	// }
	IBaseLabelProvider baseLabel = ((TreeViewer) viewer).getLabelProvider();
	if (baseLabel instanceof ITableLabelProvider) {
		ITableLabelProvider tableProvider = (ITableLabelProvider) baseLabel;
		String e1p = tableProvider.getColumnText(a, columnNumber);
		String e2p = tableProvider.getColumnText(b, columnNumber);
		if (e1p != null && e2p != null) {
			return getComparator().compare(e1p, e2p);
		}
	}
	return 0;
}
 

@Override
protected IBaseLabelProvider getLabelProvider() {
	return new RepositoryConfigLabel();
}
 

@Override
protected IBaseLabelProvider getLabelProvider() {
	return new HistoryLabel();
}
 

@Override
public void setLabelProvider(final IBaseLabelProvider labelProvider) {
    Assert.isTrue(labelProvider instanceof ExpressionLabelProvider);
    super.setLabelProvider(labelProvider);
}
 

@Override
protected IBaseLabelProvider getLabelProvider() {
	return new ReferencesLabel();
}
 

@Override
protected IBaseLabelProvider getLabelProvider() {
	return new LabelProvider();
}
 

@Override
protected IBaseLabelProvider createLocationLabelProvider() {
	return locationLabelProvider;
}