org.eclipse.jface.viewers.ViewerCell java code examples

Common ways to obtain ViewerCell

private void myMethod () {
     ViewerCell v =SWTFocusCellManager sWTFocusCellManager;sWTFocusCellManager.getFocusCell()
ViewerRow viewerRow;viewerRow.getCell(column)
ColumnViewer columnViewer;columnViewer.getColumnViewerEditor().getFocusCell()
Smart code suggestions by Codota
}

@Override
public void update(ViewerCell cell) {
  switch (cell.getColumnIndex()) {
    case COLUMN_FEATURE_NAME :
      StyledString label = getStyledText(cell.getElement());
      cell.setStyleRanges(label.getStyleRanges());
      cell.setText(label.toString());
      cell.setImage(getColumnImage(cell.getElement(), COLUMN_FEATURE_NAME));
      break;
    case COLUMN_PLUGIN_RESOLUTION :
      cell.setText(getColumnText(cell.getElement(), COLUMN_PLUGIN_RESOLUTION));
      cell.setImage(getColumnImage(cell.getElement(), COLUMN_PLUGIN_RESOLUTION));
      break;
  }
  super.update(cell);
}

@Override
public void update(ViewerCell cell) {
  Object element = cell.getElement();
  StyledString styledString = getStyledText(element);
  String newText= styledString.toString();
  StyleRange[] oldStyleRanges= cell.getStyleRanges();
  StyleRange[] newStyleRanges= isOwnerDrawEnabled() ? styledString.getStyleRanges() : null;
  if (!Arrays.equals(oldStyleRanges, newStyleRanges)) {
    cell.setStyleRanges(newStyleRanges);
    if (cell.getText().equals(newText)) {
      // make sure there will be a refresh from a change
      cell.setText(""); //$NON-NLS-1$
    }
  }
  cell.setText(newText);
  cell.setImage(getImage(element));
  cell.setFont(getFont(element));
  cell.setForeground(getForeground(element));
  cell.setBackground(getBackground(element));
  // no super call required. changes on item will trigger the refresh.
}

public void update(ViewerCell cell) {
  TableItem item = (TableItem) cell.getItem();
  Button button;
  if(buttons.containsKey(cell.getElement()))
    button = buttons.get(cell.getElement());
     button = new Button((Composite) cell.getViewerRow().getControl(),SWT.NONE);
    button.setText("Remove");
    buttons.put(cell.getElement(), button);
  editor.setEditor(button , item, cell.getColumnIndex());
  editor.layout();

 @Override
 public void update(final ViewerCell cell) {
  cell.setText(cell.getElement().toString());
 }
}

 public class ColorColumnLabelProvider extends ColumnLabelProvider {
  @Override
  public void update(ViewerCell cell)
  {
    Object element = cell.getElement();
    if(element instanceof AplotResultsDataModel.ResultsData)
    {
      AplotResultsDataModel.ResultsData p = (AplotResultsDataModel.ResultsData) element;

      cell.setForeground(YOUR_COLOR);
      switch(cell.getColumnIndex())
      {
        case 0:
          cell.setText(p.YOUR_FIRST_TEXT);
          break;
        case 1:
          cell.setText(p.YOUR_SECOND_TEXT);
          break;
        case ...
      }
    }
  }
}

@Override
public void update(ViewerCell cell) {
  Object element = cell.getElement();
  cell.setText(getText(element));
  Image image = getImage(element);
  cell.setImage(image);
  cell.setBackground(getBackground(element));
  cell.setForeground(getForeground(element));
  cell.setFont(getFont(element));
}

public void update(ViewerCell cell) {
  Object element = cell.getElement();
  if(viewerLabelProvider == null && treePathLabelProvider == null){
    cell.setText(getText(element));
    Image image = getImage(element);
    cell.setImage(image);
    if (colorProvider != null) {
      cell.setBackground(getBackground(element));
      cell.setForeground(getForeground(element));
      cell.setFont(getFont(element));
  ViewerLabel label = new ViewerLabel(cell.getText(), cell.getImage());
    TreePath treePath = cell.getViewerRow().getTreePath();

 public class MyStyledLabelProvider extends StyledCellLabelProvider {

private Styler defaultStyler;
public MyStyledLabelProvider () {
    defaultStyler = new Styler() {
      @Override
      public void applyStyles(TextStyle textStyle) {
        textStyle.strikeout = true;
      }
    };
  }

@Override
  public void update(ViewerCell cell) {
    Object element = cell.getElement();
    StyledString styledString = getStyledString(element);
    cell.setText(styledString.toString());
    cell.setStyleRanges(styledString.getStyleRanges());
    super.update(cell);
  }

  @SuppressWarnings("unchecked")
  private StyledString getStyledString(Object element) {
    return new StyledString("Cell string", defaultStyler);
  }
}

/**
 * Update the contents of the cell.
 *
 * @param cell
 */
public void update(ViewerCell cell) {
  cell.setText(getValue((MarkerItem) cell.getElement()));
  cell.setImage(null);
}

public void update(ViewerCell cell) {
  provider.update(cell);
  if (cell.getStyleRanges() == null) {
    cell.setStyleRanges(styleRanges);
  if (cell.getElement() instanceof IValidable) {
    IValidable model = (IValidable) cell.getElement();
    if (!ControllerRegistry.getCurrentViolations().getViolations(model.getModelId(), propertyName).isEmpty()) {
      if (cell.getText().isEmpty()) {
        cell.setBackground(Display.getCurrent().getSystemColor(SWT.COLOR_RED));
        cell.setImage(FieldDecorationRegistry.getDefault().getFieldDecoration(FieldDecorationRegistry.DEC_ERROR).getImage());
      } else {
        if (styleRanges[0].length < cell.getText().length()) {
          styleRanges[0].length = cell.getText().length();
      if (cell.getImage() != null) {
        cell.setImage(null);
      cell.setStyleRanges(null);

  @Override
  public void update(ViewerCell cell) {
    cell.setText(getText(cell.getElement()));
    Color color = getForeground(cell.getElement());
    if (color != null) {
      cell.setForeground(color);
    }
  }
}

@Override
public void update ( final ViewerCell cell )
{
  final ConfigurationDescriptor cfg = (ConfigurationDescriptor)cell.getElement ();
  switch ( cell.getColumnIndex () )
  {
  case 0:
    cell.setText ( cfg.getConfigurationInformation ().getId () );
    break;
  case 1:
    cell.setText ( "" + cfg.getConfigurationInformation ().getState () );
    break;
  }
  if ( cfg.getConfigurationInformation ().getErrorInformation () != null )
  {
    cell.setBackground ( Display.getCurrent ().getSystemColor ( SWT.COLOR_RED ) );
  }
  else
  {
    cell.setBackground ( null );
  }
  super.update ( cell );
}

  @Override
  public void update ( final ViewerCell cell )
  {
    final Map.Entry<?, ?> cfg = (Map.Entry<?, ?>)cell.getElement ();
    switch ( cell.getColumnIndex () )
    {
    case 0:
      cell.setText ( "" + cfg.getKey () );
      break;
    case 1:
      cell.setText ( "" + cfg.getValue () );
      break;
    }
    super.update ( cell );
  }
}

  @Override
  public void update(ViewerCell cell) {
    super.update(cell);
    cell.setImage(getImage(cell.getElement()));
  }
}

private boolean isCellEditable(ColumnViewer viewer, ViewerCell cell) {
  ViewerColumn column = viewer.getViewerColumn(cell.getColumnIndex());
  return column != null && column.getEditingSupport() != null
      && column.getEditingSupport().canEdit(cell.getElement());
}

  private void removeSelectionInformation(Event event, ViewerCell cell) {
//        GC gc = event.gc;
//        gc.setBackground(cell.getViewerRow().getBackground(
//                cell.getColumnIndex()));
//        gc.setForeground(cell.getViewerRow().getForeground(
//                cell.getColumnIndex()));
//        gc.fillRectangle(cell.getBounds());
//        event.detail &= ~SWT.SELECTED;
   Color cellBackground = null;
   Color cellForeground = null;
   CellLabelProvider labelProvider = viewer.getLabelProvider( cell.getColumnIndex() );
   if( labelProvider instanceof ColumnLabelProvider ) {
    ColumnLabelProvider columnLabelProvider = ( ColumnLabelProvider )labelProvider;
    cellBackground = columnLabelProvider.getBackground( cell.getElement() );
    cellForeground = columnLabelProvider.getForeground( cell.getElement() );
   }
   cell.setBackground( cellBackground );
   cell.setForeground( cellForeground );
  }

private boolean waitForPendingDecoration(ViewerCell cell) {
  if (this.decorator == null)
    return false;
  Object element = cell.getElement();
  String oldText = cell.getText();
  boolean isDecorationPending = false;
  if (this.decorator instanceof LabelDecorator) {
    isDecorationPending = !((LabelDecorator) this.decorator)
        .prepareDecoration(element, oldText, getDecorationContext());
  } else if (this.decorator instanceof IDelayedLabelDecorator) {
    isDecorationPending = !((IDelayedLabelDecorator) this.decorator)
        .prepareDecoration(element, oldText);
  }
  if (isDecorationPending && oldText.length() == 0) {
    // item is empty: is shown for the first time: don't wait
    return false;
  }
  return isDecorationPending;
}

  public void keyTraversed(TraverseEvent e) {
    if ((feature & DEFAULT) != DEFAULT && e.doit) {
      processTraverseEvent(cell.getColumnIndex(),
          viewer.getViewerRowFromItem(cell
              .getItem()), e);
    }
  }
};

private void handleSelection(Event event) {
  if ((event.detail & SWT.CHECK) == 0 && focusCell != null && focusCell.getItem() != event.item
      && event.item != null && ! event.item.isDisposed() ) {
    ViewerRow row = viewer.getViewerRowFromItem(event.item);
    Assert
        .isNotNull(row,
            "Internal Structure invalid. Row item has no row ViewerRow assigned"); //$NON-NLS-1$
    ViewerCell tmp = row.getCell(focusCell.getColumnIndex());
    if (!focusCell.equals(tmp)) {
      setFocusCell(tmp);
    }
  }
}

  @Override
  public void getName(AccessibleEvent event) {
    ViewerCell cell = getFocusCell();
    if (cell == null)
      return;
    ViewerRow row = cell.getViewerRow();
    if (row == null)
      return;
    ViewerColumn viewPart = viewer.getViewerColumn(cell
        .getColumnIndex());
    if (viewPart == null)
      return;
    CellLabelProvider labelProvider = viewPart
        .getLabelProvider();
    if (labelProvider == null)
      return;
    labelProvider.update(cell);
    event.result = cell.getText();
  }
});

Javadoc

The ViewerCell is the JFace representation of a cell entry in a ViewerRow.

Most used methods

getElement
Get the element this row represents.
setText
Set the text for the cell.
setImage
Set the Image for the cell.
setStyleRanges
Set the style ranges to be applied on the text label Note: Requires StyledCellLabelProvider with own
getColumnIndex
Get the index of the cell.
getText
Return the text for the cell.
setBackground
Set the background color of the cell.
setForeground
Set the foreground color of the cell.
getItem
Return the item for the receiver.
setFont
Set the font of the cell.
getViewerRow
getBounds
Get the bounds of the cell.

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