Java tutorial
/******************************************************************************* * Copyright (c) 2003, 2008 IBM Corporation and others. * 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: * IBM Corporation - Initial API and implementation *******************************************************************************/ package org.eclipse.jst.server.ui.internal; import java.util.ArrayList; import java.util.List; import org.eclipse.wst.server.core.IRuntimeWorkingCopy; import org.eclipse.wst.server.ui.wizard.IWizardHandle; import org.eclipse.swt.SWT; import org.eclipse.swt.layout.*; import org.eclipse.swt.widgets.*; import org.eclipse.swt.events.*; import org.eclipse.jdt.launching.IVMInstall; import org.eclipse.jdt.launching.IVMInstallType; import org.eclipse.jdt.launching.JavaRuntime; import org.eclipse.jface.dialogs.Dialog; import org.eclipse.jface.dialogs.IMessageProvider; import org.eclipse.jface.preference.IPreferenceNode; import org.eclipse.jface.preference.PreferenceDialog; import org.eclipse.jface.preference.PreferenceManager; import org.eclipse.jface.window.Window; import org.eclipse.jst.server.core.internal.GenericRuntime; import org.eclipse.jst.server.core.internal.IGenericRuntimeWorkingCopy; import org.eclipse.core.runtime.IStatus; import org.eclipse.core.runtime.Path; import org.eclipse.ui.PlatformUI; /** * Wizard page to set the server install directory. */ public class GenericRuntimeComposite extends Composite { protected static final String INSTALLED_JRE_PREFERENCE_PAGE_ID = "org.eclipse.jdt.debug.ui.preferences.VMPreferencePage"; protected IRuntimeWorkingCopy runtimeWC; protected IGenericRuntimeWorkingCopy runtime; protected IWizardHandle wizard; protected Text name; protected Text installDir; protected Combo combo; protected List<IVMInstall> installedJREs; protected String[] jreNames; /** * GenericRuntimeComposite constructor comment. */ protected GenericRuntimeComposite(Composite parent, IWizardHandle wizard) { super(parent, SWT.NONE); this.wizard = wizard; wizard.setTitle(Messages.runtimeTypeTitle); wizard.setDescription(Messages.runtimeTypeDescription); wizard.setImageDescriptor(ImageResource.getImageDescriptor(ImageResource.IMG_WIZ_RUNTIME_TYPE)); createControl(); } protected void setRuntime(IRuntimeWorkingCopy newRuntime) { if (newRuntime == null) { runtimeWC = null; runtime = null; } else { runtimeWC = newRuntime; runtime = (IGenericRuntimeWorkingCopy) newRuntime.loadAdapter(IGenericRuntimeWorkingCopy.class, null); } init(); validate(); } /** * Provide a wizard page to change the root directory. */ protected void createControl() { GridLayout layout = new GridLayout(); layout.numColumns = 2; setLayout(layout); setLayoutData(new GridData(GridData.FILL_BOTH)); PlatformUI.getWorkbench().getHelpSystem().setHelp(this, ContextIds.RUNTIME_COMPOSITE); Label label = new Label(this, SWT.NONE); label.setText(Messages.runtimeTypeName); GridData data = new GridData(); data.horizontalSpan = 2; label.setLayoutData(data); name = new Text(this, SWT.BORDER); data = new GridData(GridData.FILL_HORIZONTAL); name.setLayoutData(data); name.addModifyListener(new ModifyListener() { public void modifyText(ModifyEvent e) { runtimeWC.setName(name.getText()); validate(); } }); label = new Label(this, SWT.NONE); label.setText(Messages.runtimeTypeLocation); data = new GridData(); data.horizontalSpan = 2; label.setLayoutData(data); installDir = new Text(this, SWT.BORDER); data = new GridData(GridData.FILL_HORIZONTAL); installDir.setLayoutData(data); installDir.addModifyListener(new ModifyListener() { public void modifyText(ModifyEvent e) { runtimeWC.setLocation(new Path(installDir.getText())); validate(); } }); Button browse = SWTUtil.createButton(this, Messages.browse); browse.addSelectionListener(new SelectionAdapter() { public void widgetSelected(SelectionEvent se) { DirectoryDialog dialog = new DirectoryDialog(GenericRuntimeComposite.this.getShell()); dialog.setMessage(Messages.runtimeTypeSelectLocation); dialog.setFilterPath(installDir.getText()); String selectedDirectory = dialog.open(); if (selectedDirectory != null) installDir.setText(selectedDirectory); } }); updateJREs(); // JDK location label = new Label(this, SWT.NONE); label.setText(Messages.runtimeTypeJRE); data = new GridData(); data.horizontalSpan = 2; label.setLayoutData(data); combo = new Combo(this, SWT.DROP_DOWN | SWT.READ_ONLY); combo.setItems(jreNames); data = new GridData(GridData.HORIZONTAL_ALIGN_FILL); combo.setLayoutData(data); combo.addSelectionListener(new SelectionListener() { public void widgetSelected(SelectionEvent e) { int sel = combo.getSelectionIndex(); IVMInstall vmInstall = null; if (sel > 0) vmInstall = installedJREs.get(sel - 1); runtime.setVMInstall(vmInstall); validate(); } public void widgetDefaultSelected(SelectionEvent e) { widgetSelected(e); } }); Button button = SWTUtil.createButton(this, Messages.runtimeTypeInstalledJREs); button.addSelectionListener(new SelectionAdapter() { public void widgetSelected(SelectionEvent e) { String currentVM = combo.getText(); if (showPreferencePage()) { updateJREs(); combo.setItems(jreNames); combo.setText(currentVM); if (combo.getSelectionIndex() == -1) combo.select(0); } } }); init(); validate(); Dialog.applyDialogFont(this); name.forceFocus(); } protected void updateJREs() { // get all installed JVMs installedJREs = new ArrayList<IVMInstall>(); IVMInstallType[] vmInstallTypes = JavaRuntime.getVMInstallTypes(); for (IVMInstallType vit : vmInstallTypes) { IVMInstall[] vmInstalls = vit.getVMInstalls(); for (IVMInstall vmInstall : vmInstalls) installedJREs.add(vmInstall); } // get names int size = installedJREs.size(); jreNames = new String[size + 1]; jreNames[0] = Messages.runtimeTypeDefaultJRE; for (int i = 0; i < size; i++) { IVMInstall vmInstall = installedJREs.get(i); jreNames[i + 1] = vmInstall.getName(); } } protected boolean showPreferencePage() { String id = "org.eclipse.jdt.debug.ui.preferences.VMPreferencePage"; // should be using the following API, but it only allows a single preference page instance. // see bug 168211 for details //PreferenceDialog dialog = PreferencesUtil.createPreferenceDialogOn(getShell(), id, new String[] { id }, null); //return (dialog.open() == Window.OK); PreferenceManager manager = PlatformUI.getWorkbench().getPreferenceManager(); IPreferenceNode node = manager.find("org.eclipse.jdt.ui.preferences.JavaBasePreferencePage") .findSubNode(id); PreferenceManager manager2 = new PreferenceManager(); manager2.addToRoot(node); PreferenceDialog dialog = new PreferenceDialog(getShell(), manager2); dialog.create(); return (dialog.open() == Window.OK); } protected void init() { if (installDir == null || runtime == null) return; name.setText(runtimeWC.getName()); if (runtimeWC.getLocation() != null) installDir.setText(runtimeWC.getLocation().toOSString()); else installDir.setText(""); // set selection if (((GenericRuntime) runtime).isUsingDefaultJRE()) combo.select(0); else { boolean found = false; int size = installedJREs.size(); for (int i = 0; i < size; i++) { IVMInstall vmInstall = installedJREs.get(i); if (vmInstall.equals(runtime.getVMInstall())) { combo.select(i + 1); found = true; } } if (!found) combo.select(0); } } protected void validate() { if (runtime == null) { wizard.setMessage("", IMessageProvider.ERROR); return; } IStatus status = runtimeWC.validate(null); if (status == null || status.isOK()) wizard.setMessage(null, IMessageProvider.NONE); else wizard.setMessage(status.getMessage(), IMessageProvider.ERROR); } }