Java tutorial
/* * ARX: Powerful Data Anonymization * Copyright (C) 2012 - 2014 Florian Kohlmayer, Fabian Prasser * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This program 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 General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ package org.deidentifier.arx.gui.view.impl.menu; import org.deidentifier.arx.gui.Controller; import org.deidentifier.arx.gui.resources.Resources; import org.deidentifier.arx.gui.view.SWTUtil; import org.deidentifier.arx.gui.view.def.IDialog; import org.deidentifier.arx.gui.view.impl.menu.DialogHelpConfig.Entry; import org.eclipse.jface.dialogs.IMessageProvider; import org.eclipse.jface.dialogs.TitleAreaDialog; import org.eclipse.jface.window.Window; import org.eclipse.swt.SWT; import org.eclipse.swt.SWTError; import org.eclipse.swt.browser.Browser; import org.eclipse.swt.browser.LocationAdapter; import org.eclipse.swt.browser.LocationEvent; import org.eclipse.swt.custom.SashForm; import org.eclipse.swt.events.SelectionAdapter; import org.eclipse.swt.events.SelectionEvent; import org.eclipse.swt.graphics.Image; 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.Button; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Control; import org.eclipse.swt.widgets.Event; import org.eclipse.swt.widgets.List; import org.eclipse.swt.widgets.Listener; import org.eclipse.swt.widgets.Shell; import org.eclipse.swt.widgets.ToolBar; import org.eclipse.swt.widgets.ToolItem; /** * A help dialog * @author Fabian Prasser */ public class DialogHelp extends TitleAreaDialog implements IDialog { private String id; private Browser browser; private List list; private Image image; private DialogHelpConfig config = new DialogHelpConfig(); /** * Constructor * @param parentShell * @param controller * @param id */ public DialogHelp(final Shell parentShell, final Controller controller, final String id) { super(parentShell); this.id = id; this.image = controller.getResources().getImage("logo_small.png"); //$NON-NLS-1$ } @Override public boolean close() { if (image != null) image.dispose(); return super.close(); } /** * Returns the index of a url * @param location * @return */ private int getIndexOf(String location) { return config.getIndexForUrl(location); } @Override protected void configureShell(Shell newShell) { super.configureShell(newShell); newShell.setImages(Resources.getIconSet(newShell.getDisplay())); } @Override protected void createButtonsForButtonBar(final Composite parent) { // Create OK Button parent.setLayoutData(SWTUtil.createFillGridData()); final Button okButton = createButton(parent, Window.OK, Resources.getMessage("AboutDialog.15"), true); //$NON-NLS-1$ okButton.addSelectionListener(new SelectionAdapter() { @Override public void widgetSelected(final SelectionEvent e) { setReturnCode(Window.OK); close(); } }); } @Override protected Control createContents(Composite parent) { Control contents = super.createContents(parent); setTitle(Resources.getMessage("DialogHelp.1")); //$NON-NLS-1$ setMessage(Resources.getMessage("DialogHelp.2"), IMessageProvider.INFORMATION); //$NON-NLS-1$ if (image != null) setTitleImage(image); //$NON-NLS-1$ return contents; } @Override protected Control createDialogArea(final Composite parent) { Composite compTools = new Composite(parent, SWT.NONE); compTools.setLayoutData(SWTUtil.createFillHorizontallyGridData()); compTools.setLayout(new GridLayout(1, false)); ToolBar navBar = new ToolBar(compTools, SWT.NONE); navBar.setLayoutData(new GridData(GridData.FILL_HORIZONTAL | GridData.HORIZONTAL_ALIGN_END)); final ToolItem back = new ToolItem(navBar, SWT.PUSH); back.setText("Back"); back.setEnabled(false); final ToolItem forward = new ToolItem(navBar, SWT.PUSH); forward.setText("Forward"); forward.setEnabled(false); Composite comp = new Composite(parent, SWT.NONE); comp.setLayoutData(SWTUtil.createFillGridData()); comp.setLayout(new FillLayout()); final SashForm form = new SashForm(comp, SWT.HORIZONTAL); form.setLayout(new FillLayout()); list = new List(form, SWT.SINGLE); try { browser = new Browser(form, SWT.BORDER); } catch (SWTError e) { throw new RuntimeException(e); } for (Entry entry : config.getEntries()) { list.add(entry.title); } form.setWeights(new int[] { 25, 75 }); back.addListener(SWT.Selection, new Listener() { public void handleEvent(Event event) { browser.back(); } }); forward.addListener(SWT.Selection, new Listener() { public void handleEvent(Event event) { browser.forward(); } }); browser.addLocationListener(new LocationAdapter() { public void changed(LocationEvent event) { Browser browser = (Browser) event.widget; back.setEnabled(browser.isBackEnabled()); forward.setEnabled(browser.isForwardEnabled()); list.select(getIndexOf(event.location)); } }); list.addSelectionListener(new SelectionAdapter() { public void widgetSelected(SelectionEvent arg0) { browser.setUrl(getUrlOf(list.getSelectionIndex())); } }); int index = id == null ? 0 : config.getIndexForId(id); list.select(index); browser.setUrl(getUrlOf(index)); return parent; } @Override protected Point getInitialSize() { return new Point(900, 600); } /** * Returns the url for an index * @param index * @return */ protected String getUrlOf(int index) { return config.getUrlForIndex(index); } @Override protected boolean isResizable() { return true; } }