r/org.eclipse.statet.r.ui/src/org/eclipse/statet/internal/r/ui/datafilterview/ColumnLabelProvider.java

/*=============================================================================#
 # Copyright (c) 2012, 2021 Stephan Wahlbrink and others.
 # 
 # This program and the accompanying materials are made available under the
 # terms of the Eclipse Public License 2.0 which is available at
 # https://www.eclipse.org/legal/epl-2.0, or the Apache License, Version 2.0
 # which is available at https://www.apache.org/licenses/LICENSE-2.0.
 # 
 # SPDX-License-Identifier: EPL-2.0 OR Apache-2.0
 # 
 # Contributors:
 #     Stephan Wahlbrink <sw@wahlbrink.eu> - initial API and implementation
 #=============================================================================*/

package org.eclipse.statet.internal.r.ui.datafilterview;

import org.eclipse.jface.resource.JFaceResources;
import org.eclipse.jface.viewers.CellLabelProvider;
import org.eclipse.jface.viewers.ViewerCell;
import org.eclipse.swt.graphics.Font;

import org.eclipse.statet.ecommons.waltable.data.ControlData;

import org.eclipse.statet.r.ui.dataeditor.RDataTableColumn;


public class ColumnLabelProvider extends CellLabelProvider {
	
	
	private final RDataTableColumn column;
	
	private Font infoFont;
	
	
	public ColumnLabelProvider(final RDataTableColumn column) {
		this.column= column;
	}
	
	
	@Override
	public void update(final ViewerCell cell) {
		final Object data= this.column.getDefaultFormat().modelToDisplayValue(cell.getElement());
		cell.setFont((data instanceof ControlData) ? getInfoFont() : null);
		cell.setText(data.toString());
	}
	
	protected Font getInfoFont() {
		if (this.infoFont == null) {
			this.infoFont= JFaceResources.getFontRegistry().getItalic(JFaceResources.DIALOG_FONT);
		}
		return this.infoFont;
	}
	
}