Java tutorial
package com.safi.workshop.sqlexplorer.dialogs; /* * Copyright (C) 2002-2004 Andrea Mazzolini * andreamazzolini@users.sourceforge.net * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ import java.io.BufferedReader; import java.io.InputStream; import java.io.InputStreamReader; import java.net.URL; import java.text.Collator; import org.eclipse.jface.dialogs.Dialog; import org.eclipse.jface.dialogs.IDialogConstants; import org.eclipse.jface.viewers.ColumnWeightData; import org.eclipse.jface.viewers.IStructuredContentProvider; import org.eclipse.jface.viewers.ITableLabelProvider; import org.eclipse.jface.viewers.LabelProvider; import org.eclipse.jface.viewers.TableLayout; import org.eclipse.jface.viewers.TableViewer; import org.eclipse.jface.viewers.Viewer; import org.eclipse.jface.viewers.ViewerSorter; import org.eclipse.swt.SWT; import org.eclipse.swt.custom.StyledText; import org.eclipse.swt.events.DisposeEvent; import org.eclipse.swt.events.DisposeListener; import org.eclipse.swt.events.PaintEvent; import org.eclipse.swt.events.PaintListener; import org.eclipse.swt.graphics.Color; import org.eclipse.swt.graphics.GC; import org.eclipse.swt.graphics.Image; import org.eclipse.swt.graphics.ImageData; import org.eclipse.swt.graphics.Point; import org.eclipse.swt.layout.FillLayout; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.layout.GridLayout; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Control; import org.eclipse.swt.widgets.Event; import org.eclipse.swt.widgets.Label; import org.eclipse.swt.widgets.Link; import org.eclipse.swt.widgets.Listener; import org.eclipse.swt.widgets.Shell; import org.eclipse.swt.widgets.TabFolder; import org.eclipse.swt.widgets.TabItem; import org.eclipse.swt.widgets.Table; import org.eclipse.swt.widgets.TableColumn; import org.eclipse.ui.browser.IWebBrowser; import org.eclipse.ui.internal.browser.WorkbenchBrowserSupport; import com.safi.workshop.sqlexplorer.Messages; import com.safi.workshop.sqlexplorer.plugin.SQLExplorerPlugin; import com.safi.workshop.sqlexplorer.util.ImageUtil; import com.safi.workshop.sqlexplorer.util.URLUtil; public class AboutDlg extends Dialog { public AboutDlg(Shell parentShell) { super(parentShell); } @Override protected void configureShell(Shell shell) { super.configureShell(shell); shell.setText(Messages.getString("AboutDialog.Title")); //$NON-NLS-1$ } @Override protected Control createDialogArea(Composite parent) { // top level composite Composite parentComposite = (Composite) super.createDialogArea(parent); parentComposite.setLayout(new FillLayout()); TabFolder tabFolder = new TabFolder(parentComposite, SWT.NULL); TabItem tabItem1 = new TabItem(tabFolder, SWT.NULL); tabItem1.setText(Messages.getString("AboutDialog.Tab.About")); tabItem1.setToolTipText(Messages.getString("AboutDialog.Tab.AboutToolTip")); TabItem tabItem2 = new TabItem(tabFolder, SWT.NULL); tabItem2.setText(Messages.getString("AboutDialog.Tab.Credits")); tabItem2.setToolTipText(Messages.getString("AboutDialog.Tab.CreditsToolTip")); TabItem tabItem3 = new TabItem(tabFolder, SWT.NULL); tabItem3.setText(Messages.getString("AboutDialog.Tab.License")); tabItem3.setToolTipText(Messages.getString("AboutDialog.Tab.LicenseToolTip")); TabItem tabItem4 = new TabItem(tabFolder, SWT.NULL); tabItem4.setText(Messages.getString("AboutDialog.Tab.System")); tabItem4.setToolTipText(Messages.getString("AboutDialog.Tab.SystemToolTip")); new AboutItem(tabItem1, tabFolder); new CreditsItem(tabItem2, tabFolder); new LicenseItem(tabItem3, tabFolder); new SystemProperties(tabItem4, tabFolder); return parentComposite; } @Override protected Point getInitialSize() { return new Point(455, 340); } @Override protected void createButtonsForButtonBar(Composite parent) { createButton(parent, IDialogConstants.OK_ID, IDialogConstants.OK_LABEL, true); } @Override protected void setShellStyle(int newShellStyle) { super.setShellStyle(newShellStyle | SWT.RESIZE);// Make the about dialog // resizable } } class AboutItem { Image logoImage; AboutItem(TabItem item, Composite parent) { logoImage = ImageUtil.getImage("Images.Logo"); parent.addDisposeListener(new DisposeListener() { public void widgetDisposed(DisposeEvent event) { ImageUtil.disposeImage("Images.Logo"); } }); Composite cmp = new Composite(parent, SWT.NULL); item.setControl(cmp); GridLayout lay = new GridLayout(); lay.numColumns = 1; lay.marginWidth = 15; lay.marginHeight = 15; cmp.setLayout(lay); Label lb = new Label(cmp, SWT.NULL); lb.setText(Messages.getString("AboutDialog.About.copyright")); GridData data = new GridData(GridData.VERTICAL_ALIGN_CENTER | GridData.CENTER); lb.setLayoutData(data); lb.setSize(SWT.DEFAULT, 50); ImageData imgData = logoImage.getImageData(); int width = imgData.width; int height = imgData.height; final Composite imgComposite = new Composite(cmp, SWT.BORDER); data = new GridData(GridData.VERTICAL_ALIGN_CENTER | GridData.CENTER); imgComposite.setLayoutData(data); data.heightHint = height; data.widthHint = width; final Color imageBackgroundColor = new Color(parent.getDisplay(), 255, 255, 255); final Color fontColor = new Color(parent.getDisplay(), 102, 118, 145); final String version = Messages.getString("AboutDialog.About.versionPrefix") + SQLExplorerPlugin.getDefault().getVersion(); imgComposite.addPaintListener(new PaintListener() { public void paintControl(PaintEvent event) { GC gc = event.gc; gc.drawImage(logoImage, 0, 0); gc.setBackground(imageBackgroundColor); gc.setForeground(fontColor); gc.drawText(version, 290, 75); } }); Link link = new Link(cmp, SWT.CENTER); link.setText(Messages.getString("AboutDialog.About.url")); data = new GridData(SWT.FILL); link.setLayoutData(data); link.setForeground(fontColor); link.addListener(SWT.Selection, new Listener() { public void handleEvent(Event event) { try { IWebBrowser browser = WorkbenchBrowserSupport.getInstance().getExternalBrowser(); browser.openURL(new URL(event.text)); } catch (Exception e) { SQLExplorerPlugin.error("Error launching browser", e); //$NON-NLS-1$ } } }); } } class LicenseItem { LicenseItem(TabItem item, Composite parent) { Composite cmp = new Composite(parent, SWT.NULL); item.setControl(cmp); GridLayout lay = new GridLayout(); lay.numColumns = 1; cmp.setLayout(lay); StyledText st = new StyledText(cmp, SWT.BORDER | SWT.WRAP | SWT.V_SCROLL); st.setEditable(false); String separator = System.getProperty("line.separator"); //$NON-NLS-1$ BufferedReader bbr = null; try { InputStream is = URLUtil.getResourceURL("license.txt").openStream(); //$NON-NLS-1$ bbr = new BufferedReader(new InputStreamReader(is)); String str; StringBuffer all = new StringBuffer(); while ((str = bbr.readLine()) != null) { all.append(str); all.append(separator); } st.setText(all.toString()); is.close(); } catch (Exception e) { st.setText(Messages.getString("AboutDialog.License")); //$NON-NLS-1$ } finally { try { if (bbr != null) bbr.close(); } catch (java.io.IOException e) { } } GridData data = new GridData(GridData.FILL_BOTH | GridData.VERTICAL_ALIGN_CENTER | GridData.CENTER); st.setLayoutData(data); } } class CreditsItem { CreditsItem(TabItem item, Composite parent) { Composite cmp = new Composite(parent, SWT.NULL); item.setControl(cmp); GridLayout lay = new GridLayout(); lay.numColumns = 1; cmp.setLayout(lay); StyledText st = new StyledText(cmp, SWT.BORDER | SWT.WRAP | SWT.V_SCROLL); st.setEditable(false); String separator = System.getProperty("line.separator"); //$NON-NLS-1$ final String credits = "Developers (versions 3.5.0):" + separator + " - John Spackman (Zenesis Limited - www.zenesis.com)" + separator + separator + "Developers (versions 3.0.0):" + separator + " - Davy Vanherbergen" + separator + separator + "Developers (version 2.2.5 (never released)):" + separator + " - Alexandre Luti Telles" + separator + " - Davy Vanherbergen" + separator + separator + "Previous Developers (versions 2.2.3 and 2.2.4):" + separator + " - Alexandre Luti Telles" + separator + " - Gert Wohlgemuth" + separator + separator + "Other Contributors (versions 2.2.2 and before):" + separator + " - Andrea Mazzolini (original version of JFacedb)" + separator + " - Johan Compagner" + separator + " - Jouneau Luc" + separator + " - Stephen Schaub" + separator + " - Chris Potter (Sybase plugin, Sql Server plugin)" + separator + " - Joao Reis Belo (Sql Server plugin)" + separator + separator + "The SQL stuff is based on SquirreL SQL (http://squirrel-sql.sourceforge.net)." + separator + separator + "SQLExplorer uses the following libraries too:" + separator + " - NanoXML (http://NanoXML.sourceforge.net/) Java XML API" + separator + " - log4j (http://jakarta.apache.org/log4j) Logging API" + separator; st.setText(credits); GridData data = new GridData(GridData.FILL_BOTH | GridData.VERTICAL_ALIGN_CENTER | GridData.CENTER); st.setLayoutData(data); } } class SystemProperties { private class LProvider extends LabelProvider implements ITableLabelProvider { public Image getColumnImage(Object arg0, int arg1) { return null; } public String getColumnText(Object element, int columnIndex) { java.util.Map.Entry cp = (java.util.Map.Entry) element; if (columnIndex == 0) return cp.getKey().toString(); else return cp.getValue().toString(); } } java.util.Properties props; SystemProperties(TabItem itemTab, Composite parent) { props = System.getProperties(); TableViewer tv = new TableViewer(parent, SWT.NULL); tv.setSorter(new MyViewerSorter()); Table table = tv.getTable(); TableColumn c1 = new TableColumn(table, SWT.NULL); c1.setText(Messages.getString("Property_9")); //$NON-NLS-1$ TableColumn c2 = new TableColumn(table, SWT.NULL); c2.setText(Messages.getString("Value_10")); //$NON-NLS-1$ table.setLinesVisible(true); table.setHeaderVisible(true); TableLayout tableLayout = new TableLayout(); for (int i = 0; i < 2; i++) tableLayout.addColumnData(new ColumnWeightData(1, 50, true)); table.setLayout(tableLayout); itemTab.setControl(tv.getControl()); tv.setContentProvider(new IStructuredContentProvider() { public Object[] getElements(Object input) { return props.entrySet().toArray(); } public void dispose() { } public void inputChanged(Viewer viewer, Object arg1, Object arg2) { } }); tv.setLabelProvider(new LProvider()); tv.setInput(this); } } class MyViewerSorter extends ViewerSorter { public MyViewerSorter() { super(); } public MyViewerSorter(Collator collator) { super(collator); } @Override public boolean isSorterProperty(Object element, String propertyId) { return true; } }