org.eclipse.nebula.snippets.gallery.SnippetGalleryViewerTester.java Source code

Introduction

Here is the source code for org.eclipse.nebula.snippets.gallery.SnippetGalleryViewerTester.java

Source

/*******************************************************************************
 * Copyright (c) 2007-2008 Peter Centgraf.
 * 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 :
 *    Peter Centgraf - initial implementation
 *******************************************************************************/
package org.eclipse.nebula.snippets.gallery;

import java.util.Arrays;

import org.eclipse.jface.layout.GridDataFactory;
import org.eclipse.jface.layout.GridLayoutFactory;
import org.eclipse.jface.viewers.IColorProvider;
import org.eclipse.jface.viewers.IFontProvider;
import org.eclipse.jface.viewers.ITreeContentProvider;
import org.eclipse.jface.viewers.LabelProvider;
import org.eclipse.jface.viewers.Viewer;
import org.eclipse.jface.viewers.ViewerComparator;
import org.eclipse.jface.viewers.ViewerFilter;
import org.eclipse.nebula.jface.galleryviewer.GalleryTreeViewer;
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.graphics.Font;
import org.eclipse.swt.graphics.FontData;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.program.Program;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;

/**
 * Simple visual test harness for GalleryTreeViewer.
 * 
 * @author Peter Centgraf
 * @since Dec 5, 2007
 */
public class SnippetGalleryViewerTester {

    protected static class GalleryTestContentProvider implements ITreeContentProvider {
        // implements IStructuredContentProvider { // Use this to test
        // FlatTreeContentProvider
        public static final int NUM_GROUPS = 10;
        public static final int NUM_ITEMS = 20;

        String[] groups = new String[NUM_GROUPS];
        String[][] items = new String[NUM_GROUPS][NUM_ITEMS];

        public GalleryTestContentProvider() {
            for (int i = 0; i < NUM_GROUPS; i++) {
                groups[i] = "Group " + (i + 1); //$NON-NLS-1$
                for (int j = 0; j < NUM_ITEMS; j++) {
                    items[i][j] = "Item " + (j + 1); //$NON-NLS-1$
                }
            }
        }

        public Object[] getChildren(Object parentElement) {
            int idx = Arrays.asList(groups).indexOf(parentElement);
            return items[idx];
        }

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

        public boolean hasChildren(Object element) {
            return ((String) element).startsWith("Group"); //$NON-NLS-1$
        }

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

        public void dispose() {
        }

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

    protected static class GalleryTestLabelProvider extends LabelProvider implements IColorProvider, IFontProvider {
        protected static Image itemImage = new Image(Display.getCurrent(),
                Program.findProgram("jpg").getImageData());

        public Image getImage(Object element) {
            return itemImage;
        }

        public Color getBackground(Object element) {
            String label = (String) element;
            if (Integer.parseInt(label.substring(label.indexOf(' ') + 1)) % 2 > 0) {
                return Display.getCurrent().getSystemColor(SWT.COLOR_YELLOW);
            } else {
                return null;
            }
        }

        public Color getForeground(Object element) {
            String label = (String) element;
            if (Integer.parseInt(label.substring(label.indexOf(' ') + 1)) % 2 > 0) {
                return null;
            } else {
                return Display.getCurrent().getSystemColor(SWT.COLOR_BLUE);
            }
        }

        public Font getFont(Object element) {
            String label = (String) element;
            if (Integer.parseInt(label.substring(label.indexOf(' ') + 1)) % 2 > 0) {
                return null;
            } else {
                FontData sysFontData = Display.getCurrent().getSystemFont().getFontData()[0];
                sysFontData.setStyle(SWT.BOLD | SWT.ITALIC);
                return new Font(Display.getCurrent(), sysFontData);
            }
        }
    }

    protected static class OddNumbersFilter extends ViewerFilter {
        public boolean select(Viewer viewer, Object parentElement, Object element) {
            try {
                String label = (String) element;
                return (Integer.parseInt(label.substring(label.indexOf(' ') + 1)) % 2 > 0);
            } catch (Exception e) {
                return true;
            }
        }
    }

    protected static final int WIDTH = 800;
    protected static final int HEIGHT = 600;
    protected Shell shell;

    public SnippetGalleryViewerTester() {
        // Initialize the containing Shell
        Display display = new Display();
        shell = new Shell(display);
        shell.setSize(WIDTH, HEIGHT);
        shell.setBackground(display.getSystemColor(SWT.COLOR_RED));
        GridLayoutFactory.fillDefaults().applyTo(shell);

        GalleryTreeViewer viewer = new GalleryTreeViewer(shell);
        GridDataFactory.fillDefaults().grab(true, true).applyTo(viewer.getGallery());
        viewer.setContentProvider(new GalleryTestContentProvider());
        viewer.setLabelProvider(new GalleryTestLabelProvider());
        viewer.setComparator(new ViewerComparator());
        // viewer.addFilter(new OddNumbersFilter());
        viewer.setInput(new Object());

        // Show the Shell
        shell.open();
        shell.layout();

        // Run the event loop
        while (!shell.isDisposed()) {
            if (!display.readAndDispatch())
                display.sleep();
        }
        display.dispose();
    }

    /**
     * @param args
     */
    public static void main(String[] args) {
        new SnippetGalleryViewerTester();
    }

}