org.eclipse.jface.viewers.CellToolTipProvider Maven / Gradle / Ivy
/*******************************************************************************
* Copyright (c) 2009, 2012 EclipseSource and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* EclipseSource - initial API and implementation
******************************************************************************/
package org.eclipse.jface.viewers;
import java.io.Serializable;
import org.eclipse.jface.util.SafeRunnable;
import org.eclipse.swt.internal.widgets.ICellToolTipAdapter;
import org.eclipse.swt.internal.widgets.ICellToolTipProvider;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Item;
/**
* Support for table/tree tool-tips in RAP
*/
final class CellToolTipProvider implements ICellToolTipProvider, Serializable {
private ColumnViewer viewer;
CellToolTipProvider( ColumnViewer viewer ) {
this.viewer = viewer;
}
static void attach( ColumnViewer viewer, CellLabelProvider labelProvider ) {
ICellToolTipAdapter adapter = getAdapter( viewer );
if( labelProvider != null ) {
CellToolTipProvider provider = new CellToolTipProvider( viewer );
adapter.setCellToolTipProvider( provider );
} else {
adapter.setCellToolTipProvider( null );
}
}
public void getToolTipText( final Item item, final int columnIndex ) {
SafeRunnable.run( new SafeRunnable() {
public void run() {
Object element = item.getData();
ViewerColumn column = viewer.getViewerColumn( columnIndex );
CellLabelProvider labelProvider = column.getLabelProvider();
if( labelProvider != null ) {
String text = labelProvider.getToolTipText( element );
ICellToolTipAdapter adapter = getAdapter( viewer );
adapter.setCellToolTipText( text );
}
}
} );
}
private static ICellToolTipAdapter getAdapter( ColumnViewer viewer ) {
Control control = viewer.getControl();
return control.getAdapter( ICellToolTipAdapter.class );
}
}