Snippet015CustomTooltipsForTree.java Source code

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Here is the source code for Snippet015CustomTooltipsForTree.java

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/*******************************************************************************
 * Copyright (c) 2006, 2010 Tom Schindl 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:
 *     Tom Schindl - initial API and implementation
 *******************************************************************************/

import org.eclipse.jface.viewers.CellLabelProvider;
import org.eclipse.jface.viewers.ColumnViewerToolTipSupport;
import org.eclipse.jface.viewers.ITreeContentProvider;
import org.eclipse.jface.viewers.TreeViewer;
import org.eclipse.jface.viewers.Viewer;
import org.eclipse.jface.viewers.ViewerCell;
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;

/**
 * Explore New API: JFace custom tooltips drawing.
 * 
 * @author Tom Schindl <tom.schindl@bestsolution.at>
 * @since 3.3M2
 */
public class Snippet015CustomTooltipsForTree {
    private static class MyContentProvider implements ITreeContentProvider {

        private static final String ROOT = "Root";

        public Object[] getElements(Object inputElement) {
            return new Object[] { ROOT };
        }

        public void dispose() {

        }

        public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {

        }

        public Object[] getChildren(Object parentElement) {
            if (parentElement.equals(ROOT))
                return new String[] { "one", "two", "three", "four", "five", "six", "seven", "eight", "nine",
                        "ten" };
            return new Object[0];
        }

        public Object getParent(Object element) {
            return null;
        }

        public boolean hasChildren(Object element) {
            return element.equals(ROOT);
        }
    }

    /**
     * @param args
     */
    public static void main(String[] args) {
        final Display display = new Display();
        Shell shell = new Shell(display);
        shell.setLayout(new FillLayout());

        TreeViewer v = new TreeViewer(shell, SWT.FULL_SELECTION);
        v.getTree().setLinesVisible(true);
        v.getTree().setHeaderVisible(true);
        ColumnViewerToolTipSupport.enableFor(v);

        v.setContentProvider(new MyContentProvider());

        CellLabelProvider labelProvider = new CellLabelProvider() {

            /* (non-Javadoc)
             * @see org.eclipse.jface.viewers.ViewerLabelProvider#getTooltipText(java.lang.Object)
             */
            public String getToolTipText(Object element) {
                return "Tooltip (" + element + ")";
            }

            /* (non-Javadoc)
             * @see org.eclipse.jface.viewers.ViewerLabelProvider#getTooltipShift(java.lang.Object)
             */
            public Point getToolTipShift(Object object) {
                return new Point(5, 5);
            }

            /* (non-Javadoc)
             * @see org.eclipse.jface.viewers.ViewerLabelProvider#getTooltipDisplayDelayTime(java.lang.Object)
             */
            public int getToolTipDisplayDelayTime(Object object) {
                return 1000;
            }

            /* (non-Javadoc)
             * @see org.eclipse.jface.viewers.ViewerLabelProvider#getTooltipTimeDisplayed(java.lang.Object)
             */
            public int getToolTipTimeDisplayed(Object object) {
                return 50000;
            }

            public void update(ViewerCell cell) {
                cell.setText(cell.getElement().toString());

            }
        };

        v.setLabelProvider(labelProvider);
        v.setInput("");

        shell.setSize(200, 200);
        shell.open();

        while (!shell.isDisposed()) {
            if (!display.readAndDispatch()) {
                display.sleep();
            }
        }

        display.dispose();
    }

}