Java tutorial
/******************************************************************************* * Copyright (c) 2000-present Liferay, Inc. All rights reserved. * * This library 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. * *******************************************************************************/ package com.liferay.ide.portal.ui.debug; import com.liferay.ide.portal.core.PortalCore; import com.liferay.ide.portal.ui.PortalUI; import com.liferay.ide.ui.util.SWTUtil; import org.eclipse.core.runtime.preferences.IEclipsePreferences; import org.eclipse.core.runtime.preferences.InstanceScope; import org.eclipse.jface.preference.FieldEditorPreferencePage; import org.eclipse.jface.preference.IPreferenceStore; import org.eclipse.jface.preference.IntegerFieldEditor; import org.eclipse.jface.preference.StringFieldEditor; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Group; import org.eclipse.ui.IWorkbench; import org.eclipse.ui.IWorkbenchPreferencePage; import org.eclipse.ui.preferences.ScopedPreferenceStore; import org.osgi.service.prefs.BackingStoreException; /** * @author Cindy Li * @author Tao Tao */ public class DebugPreferencePage extends FieldEditorPreferencePage implements IWorkbenchPreferencePage { private class MyIntegerFieldEditor extends IntegerFieldEditor { public MyIntegerFieldEditor(String name, String labelText, Composite parent) { super(name, labelText, parent); } @Override public void refreshValidState() { super.refreshValidState(); } @Override protected void valueChanged() { super.valueChanged(); if (this.isValid()) { reValidate(); } } } private class MyStringFieldEditor extends StringFieldEditor { public MyStringFieldEditor(String name, String string, Composite composite) { super(name, string, composite); } @Override public void refreshValidState() { super.refreshValidState(); } @Override protected void valueChanged() { super.valueChanged(); if (this.isValid()) { reValidate(); } } } private ScopedPreferenceStore prefStore; private MyStringFieldEditor passwordEditor; private MyIntegerFieldEditor portEditor; public DebugPreferencePage() { super(GRID); } @Override protected void createFieldEditors() { Group group = SWTUtil.createGroup(getFieldEditorParent(), "FreeMarker Debugger", 1); //$NON-NLS-1$ GridData gd = new GridData(GridData.FILL_HORIZONTAL); group.setLayoutData(gd); Composite composite = SWTUtil.createComposite(group, 2, 2, GridData.FILL_HORIZONTAL); passwordEditor = new MyStringFieldEditor(PortalCore.PREF_FM_DEBUG_PASSWORD, "Password:", composite); passwordEditor.setEmptyStringAllowed(false); passwordEditor.setErrorMessage("Password is invalid."); passwordEditor.setValidateStrategy(StringFieldEditor.VALIDATE_ON_KEY_STROKE); passwordEditor.setPreferenceStore(getPreferenceStore()); addField(passwordEditor); portEditor = new MyIntegerFieldEditor(PortalCore.PREF_FM_DEBUG_PORT, "Port:", composite); //$NON-NLS-1$ portEditor.setValidRange(1025, 65535); portEditor.setEmptyStringAllowed(false); portEditor.setErrorMessage("Port value ranges from integer 1025 to 65535."); //$NON-NLS-1$ portEditor.setValidateStrategy(StringFieldEditor.VALIDATE_ON_KEY_STROKE); portEditor.setPreferenceStore(getPreferenceStore()); addField(portEditor); } @Override public IPreferenceStore getPreferenceStore() { if (prefStore == null) { prefStore = new ScopedPreferenceStore(InstanceScope.INSTANCE, PortalCore.PLUGIN_ID); } return prefStore; } public void init(IWorkbench workbench) { } @Override protected void performDefaults() { IEclipsePreferences prefs = PortalCore.getPrefs(); prefs.remove(PortalCore.PREF_FM_DEBUG_PASSWORD); prefs.remove(PortalCore.PREF_FM_DEBUG_PORT); try { prefs.flush(); } catch (BackingStoreException e) { PortalUI.logError(e); } super.performDefaults(); } public void reValidate() { passwordEditor.refreshValidState(); if (!passwordEditor.isValid()) { return; } portEditor.refreshValidState(); } }