Java tutorial
/******************************************************************************* * Copyright (c) 2004, 2007 Boeing. * 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: * Boeing - initial API and implementation *******************************************************************************/ package org.eclipse.osee.define.relation; import java.io.File; import java.util.Date; import org.eclipse.jface.viewers.ILabelProvider; import org.eclipse.jface.viewers.ILabelProviderListener; import org.eclipse.jface.viewers.ITableColorProvider; import org.eclipse.jface.viewers.ITableFontProvider; import org.eclipse.jface.viewers.ITableLabelProvider; import org.eclipse.jface.viewers.ITreeContentProvider; import org.eclipse.jface.viewers.TreeViewer; import org.eclipse.jface.viewers.Viewer; import org.eclipse.osee.framework.ui.swt.Displays; import org.eclipse.swt.SWT; import org.eclipse.swt.graphics.Color; import org.eclipse.swt.graphics.Font; import org.eclipse.swt.graphics.Image; import org.eclipse.swt.layout.FormAttachment; import org.eclipse.swt.layout.FormData; import org.eclipse.swt.layout.FormLayout; import org.eclipse.swt.widgets.Button; import org.eclipse.swt.widgets.DirectoryDialog; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Event; import org.eclipse.swt.widgets.Listener; import org.eclipse.swt.widgets.Shell; import org.eclipse.swt.widgets.Tree; import org.eclipse.swt.widgets.TreeColumn; public class TreeViewerTest { class TreeViewerTestLabelProvider implements ITableLabelProvider, ITableColorProvider, ITableFontProvider { Font font = null; @Override public String getColumnText(Object element, int columnIndex) { if (!(element instanceof File)) { return null; } File file = (File) element; switch (columnIndex) { case 0: return file.getName(); case 1: return "" + new Date(file.lastModified()); case 2: return "" + file.isHidden(); } return null; } @Override public Image getColumnImage(Object element, int columnIndex) { if (columnIndex != 0) { return null; } if (!(element instanceof File)) { return null; } File file = (File) element; if (file.isDirectory()) { return Displays.getSystemImage(SWT.ICON_WARNING); } return Displays.getSystemImage(SWT.ICON_QUESTION); } @Override public void dispose() { if (font != null) { font.dispose(); } font = null; } @Override public boolean isLabelProperty(Object element, String property) { return false; } @Override public void addListener(ILabelProviderListener listener) { // do nothing } @Override public void removeListener(ILabelProviderListener listener) { // do nothing } @Override public Color getForeground(Object element, int columnIndex) { if (columnIndex == 1) { return Displays.getSystemColor(SWT.COLOR_RED); } return null; } @Override public Color getBackground(Object element, int columnIndex) { if (columnIndex == 0) { File file = (File) element; if (file.isDirectory()) { return Displays.getSystemColor(SWT.COLOR_CYAN); } return Displays.getSystemColor(SWT.COLOR_MAGENTA); } return null; } @Override public Font getFont(Object element, int columnIndex) { if (columnIndex == 2) { if (font == null) { Display display = Display.getCurrent(); font = new Font(display, "Times", 12, SWT.ITALIC); } return font; } return null; } } public static void main(String[] args) { final Display display = new Display(); final Shell shell = new Shell(display); shell.setLayout(new FormLayout()); TreeViewerTestLabelProvider labelProvider1 = new TreeViewerTest().new TreeViewerTestLabelProvider(); ITreeContentProvider contentProvider = new ITreeContentProvider() { @Override public Object[] getChildren(Object parentElement) { if (!(parentElement instanceof File)) { return null; } File file = (File) parentElement; if (file.isDirectory()) { return file.listFiles(); } return null; } @Override public Object getParent(Object element) { if (!(element instanceof File)) { return null; } File file = (File) element; return file.getParentFile(); } @Override public boolean hasChildren(Object element) { if (!(element instanceof File)) { return false; } File file = (File) element; return file.isDirectory(); } @Override public Object[] getElements(Object inputElement) { return getChildren(inputElement); } @Override public void dispose() { // do nothing } @Override public void inputChanged(Viewer viewer, Object oldInput, Object newInput) { // do nothing } }; ILabelProvider labelProvider2 = new ILabelProvider() { @Override public void dispose() { // do nothing } @Override public boolean isLabelProperty(Object element, String property) { return false; } @Override public void addListener(ILabelProviderListener listener) { // do nothing } @Override public void removeListener(ILabelProviderListener listener) { // do nothing } @Override public Image getImage(Object element) { if (!(element instanceof File)) { return null; } File file = (File) element; if (file.isDirectory()) { return display.getSystemImage(SWT.ICON_WARNING); } return display.getSystemImage(SWT.ICON_QUESTION); } @Override public String getText(Object element) { if (!(element instanceof File)) { return null; } File file = (File) element; return file.getName(); } }; final TreeViewer treeViewer1 = new TreeViewer(shell, SWT.FULL_SELECTION | SWT.CHECK); Tree tree1 = treeViewer1.getTree(); tree1.setHeaderVisible(true); TreeColumn column1 = new TreeColumn(tree1, SWT.LEFT); column1.setText("Name"); column1.setImage(display.getSystemImage(SWT.ICON_WORKING)); column1.setWidth(200); TreeColumn column2 = new TreeColumn(tree1, SWT.CENTER); column2.setText("Last Modified"); column2.setImage(display.getSystemImage(SWT.ICON_INFORMATION)); column2.setWidth(200); TreeColumn column3 = new TreeColumn(tree1, SWT.CENTER); column3.setText("Hidden"); column3.setImage(display.getSystemImage(SWT.ICON_INFORMATION)); column3.setWidth(100); treeViewer1.setLabelProvider(labelProvider1); treeViewer1.setContentProvider(contentProvider); final TreeViewer treeViewer2 = new TreeViewer(shell); Tree tree2 = treeViewer2.getTree(); treeViewer2.setLabelProvider(labelProvider2); treeViewer2.setContentProvider(contentProvider); Button b = new Button(shell, SWT.PUSH); b.setText("choose root folder"); b.addListener(SWT.Selection, new Listener() { @Override public void handleEvent(Event e) { DirectoryDialog f = new DirectoryDialog(shell, SWT.OPEN); String root = f.open(); if (root != null) { File file = new File(root); if (file.exists()) { treeViewer1.setInput(file); treeViewer1.refresh(); treeViewer2.setInput(file); treeViewer2.refresh(); } } } }); FormData data = new FormData(); data.left = new FormAttachment(0, 10); data.top = new FormAttachment(0, 10); data.right = new FormAttachment(50, -5); data.bottom = new FormAttachment(b, -10); tree1.setLayoutData(data); data = new FormData(); data.left = new FormAttachment(50, 5); data.top = new FormAttachment(0, 10); data.right = new FormAttachment(100, -10); data.bottom = new FormAttachment(b, -10); tree2.setLayoutData(data); data = new FormData(); data.left = new FormAttachment(0, 10); data.bottom = new FormAttachment(100, -10); b.setLayoutData(data); shell.open(); while (!shell.isDisposed()) { if (!display.readAndDispatch()) { display.sleep(); } } display.dispose(); } }