Java tutorial
/******************************************************************************* * Copyright (c) 2000, 2016 IBM Corporation and others. * * This program and the accompanying materials * are made available under the terms of the Eclipse Public License 2.0 * which accompanies this distribution, and is available at * https://www.eclipse.org/legal/epl-2.0/ * * SPDX-License-Identifier: EPL-2.0 * * Contributors: * IBM Corporation - initial API and implementation *******************************************************************************/ package org.eclipse.swt.snippets; /* * example snippet: embed Swing/AWT in SWT * * For a list of all SWT example snippets see * http://www.eclipse.org/swt/snippets/ * * @since 3.0 */ import java.awt.*; import java.io.*; import java.util.*; import javax.swing.*; import javax.swing.table.*; import org.eclipse.swt.*; import org.eclipse.swt.awt.*; import org.eclipse.swt.graphics.*; import org.eclipse.swt.graphics.Rectangle; import org.eclipse.swt.layout.*; import org.eclipse.swt.layout.GridLayout; import org.eclipse.swt.widgets.*; import org.eclipse.swt.widgets.Button; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Label; import org.eclipse.swt.widgets.Menu; import org.eclipse.swt.widgets.MenuItem; public class Snippet135 { static class FileTableModel extends AbstractTableModel { File[] files; String[] columnsName = { "Name", "Size", "Date Modified" }; public FileTableModel(File[] files) { this.files = files; } @Override public int getColumnCount() { return columnsName.length; } @Override public Class<?> getColumnClass(int col) { if (col == 1) return Long.class; if (col == 2) return Date.class; return String.class; } @Override public int getRowCount() { return files == null ? 0 : files.length; } @Override public Object getValueAt(int row, int col) { if (col == 0) return files[row].getName(); if (col == 1) return Long.valueOf(files[row].length()); if (col == 2) return new Date(files[row].lastModified()); return ""; } @Override public String getColumnName(int col) { return columnsName[col]; } } public static void main(String[] args) { final Display display = new Display(); final Shell shell = new Shell(display); shell.setText("SWT and Swing/AWT Example"); Listener exitListener = e -> { MessageBox dialog = new MessageBox(shell, SWT.OK | SWT.CANCEL | SWT.ICON_QUESTION); dialog.setText("Question"); dialog.setMessage("Exit?"); if (e.type == SWT.Close) e.doit = false; if (dialog.open() != SWT.OK) return; shell.dispose(); }; Listener aboutListener = e -> { final Shell s = new Shell(shell, SWT.DIALOG_TRIM | SWT.APPLICATION_MODAL); s.setText("About"); GridLayout layout = new GridLayout(1, false); layout.verticalSpacing = 20; layout.marginHeight = layout.marginWidth = 10; s.setLayout(layout); Label label = new Label(s, SWT.NONE); label.setText("SWT and AWT Example."); Button button = new Button(s, SWT.PUSH); button.setText("OK"); GridData data = new GridData(); data.horizontalAlignment = GridData.CENTER; button.setLayoutData(data); button.addListener(SWT.Selection, event -> s.dispose()); s.pack(); Rectangle parentBounds = shell.getBounds(); Rectangle bounds = s.getBounds(); int x = parentBounds.x + (parentBounds.width - bounds.width) / 2; int y = parentBounds.y + (parentBounds.height - bounds.height) / 2; s.setLocation(x, y); s.open(); while (!s.isDisposed()) { if (!display.readAndDispatch()) display.sleep(); } }; shell.addListener(SWT.Close, exitListener); Menu mb = new Menu(shell, SWT.BAR); MenuItem fileItem = new MenuItem(mb, SWT.CASCADE); fileItem.setText("&File"); Menu fileMenu = new Menu(shell, SWT.DROP_DOWN); fileItem.setMenu(fileMenu); MenuItem exitItem = new MenuItem(fileMenu, SWT.PUSH); exitItem.setText("&Exit\tCtrl+X"); exitItem.setAccelerator(SWT.CONTROL + 'X'); exitItem.addListener(SWT.Selection, exitListener); MenuItem aboutItem = new MenuItem(fileMenu, SWT.PUSH); aboutItem.setText("&About\tCtrl+A"); aboutItem.setAccelerator(SWT.CONTROL + 'A'); aboutItem.addListener(SWT.Selection, aboutListener); shell.setMenuBar(mb); RGB color = shell.getBackground().getRGB(); Label separator1 = new Label(shell, SWT.SEPARATOR | SWT.HORIZONTAL); Label locationLb = new Label(shell, SWT.NONE); locationLb.setText("Location:"); Composite locationComp = new Composite(shell, SWT.EMBEDDED); ToolBar toolBar = new ToolBar(shell, SWT.FLAT); ToolItem exitToolItem = new ToolItem(toolBar, SWT.PUSH); exitToolItem.setText("&Exit"); exitToolItem.addListener(SWT.Selection, exitListener); ToolItem aboutToolItem = new ToolItem(toolBar, SWT.PUSH); aboutToolItem.setText("&About"); aboutToolItem.addListener(SWT.Selection, aboutListener); Label separator2 = new Label(shell, SWT.SEPARATOR | SWT.HORIZONTAL); final Composite comp = new Composite(shell, SWT.NONE); final Tree fileTree = new Tree(comp, SWT.SINGLE | SWT.BORDER); Sash sash = new Sash(comp, SWT.VERTICAL); Composite tableComp = new Composite(comp, SWT.EMBEDDED); Label separator3 = new Label(shell, SWT.SEPARATOR | SWT.HORIZONTAL); Composite statusComp = new Composite(shell, SWT.EMBEDDED); java.awt.Frame locationFrame = SWT_AWT.new_Frame(locationComp); final java.awt.TextField locationText = new java.awt.TextField(); locationFrame.add(locationText); java.awt.Frame fileTableFrame = SWT_AWT.new_Frame(tableComp); java.awt.Panel panel = new java.awt.Panel(new java.awt.BorderLayout()); fileTableFrame.add(panel); final JTable fileTable = new JTable(new FileTableModel(null)); fileTable.setDoubleBuffered(true); fileTable.setShowGrid(false); fileTable.createDefaultColumnsFromModel(); JScrollPane scrollPane = new JScrollPane(fileTable); panel.add(scrollPane); java.awt.Frame statusFrame = SWT_AWT.new_Frame(statusComp); statusFrame.setBackground(new java.awt.Color(color.red, color.green, color.blue)); final java.awt.Label statusLabel = new java.awt.Label(); statusFrame.add(statusLabel); statusLabel.setText("Select a file"); sash.addListener(SWT.Selection, e -> { if (e.detail == SWT.DRAG) return; GridData data = (GridData) fileTree.getLayoutData(); Rectangle trim = fileTree.computeTrim(0, 0, 0, 0); data.widthHint = e.x - trim.width; comp.layout(); }); File[] roots = File.listRoots(); for (int i = 0; i < roots.length; i++) { File file = roots[i]; TreeItem treeItem = new TreeItem(fileTree, SWT.NONE); treeItem.setText(file.getAbsolutePath()); treeItem.setData(file); new TreeItem(treeItem, SWT.NONE); } fileTree.addListener(SWT.Expand, e -> { TreeItem item = (TreeItem) e.item; if (item == null) return; if (item.getItemCount() == 1) { TreeItem firstItem = item.getItems()[0]; if (firstItem.getData() != null) return; firstItem.dispose(); } else { return; } File root = (File) item.getData(); File[] files = root.listFiles(); if (files == null) return; for (int i = 0; i < files.length; i++) { File file = files[i]; if (file.isDirectory()) { TreeItem treeItem = new TreeItem(item, SWT.NONE); treeItem.setText(file.getName()); treeItem.setData(file); new TreeItem(treeItem, SWT.NONE); } } }); fileTree.addListener(SWT.Selection, e -> { TreeItem item = (TreeItem) e.item; if (item == null) return; final File root = (File) item.getData(); EventQueue.invokeLater(() -> { statusLabel.setText(root.getAbsolutePath()); locationText.setText(root.getAbsolutePath()); fileTable.setModel(new FileTableModel(root.listFiles())); }); }); GridLayout layout = new GridLayout(4, false); layout.marginWidth = layout.marginHeight = 0; layout.horizontalSpacing = layout.verticalSpacing = 1; shell.setLayout(layout); GridData data; data = new GridData(GridData.FILL_HORIZONTAL); data.horizontalSpan = 4; separator1.setLayoutData(data); data = new GridData(); data.horizontalSpan = 1; data.horizontalIndent = 10; locationLb.setLayoutData(data); data = new GridData(GridData.FILL_HORIZONTAL); data.horizontalSpan = 2; data.heightHint = locationText.getPreferredSize().height; locationComp.setLayoutData(data); data = new GridData(GridData.FILL_HORIZONTAL); data.horizontalSpan = 1; toolBar.setLayoutData(data); data = new GridData(GridData.FILL_HORIZONTAL); data.horizontalSpan = 4; separator2.setLayoutData(data); data = new GridData(GridData.FILL_BOTH); data.horizontalSpan = 4; comp.setLayoutData(data); data = new GridData(GridData.FILL_HORIZONTAL); data.horizontalSpan = 4; separator3.setLayoutData(data); data = new GridData(GridData.FILL_HORIZONTAL); data.horizontalSpan = 4; data.heightHint = statusLabel.getPreferredSize().height; statusComp.setLayoutData(data); layout = new GridLayout(3, false); layout.marginWidth = layout.marginHeight = 0; layout.horizontalSpacing = layout.verticalSpacing = 1; comp.setLayout(layout); data = new GridData(GridData.FILL_VERTICAL); data.widthHint = 200; fileTree.setLayoutData(data); data = new GridData(GridData.FILL_VERTICAL); sash.setLayoutData(data); data = new GridData(GridData.FILL_BOTH); tableComp.setLayoutData(data); shell.open(); while (!shell.isDisposed()) { if (!display.readAndDispatch()) display.sleep(); } display.dispose(); } }