Java tutorial
/******************************************************************************* * Copyright (c) 2007, 2008 Edgar Espina. * 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 * *******************************************************************************/ package org.deved.antlride.ui; import java.util.Hashtable; import java.util.List; import org.deved.antlride.core.AntlrConsole; import org.deved.antlride.core.AntlrCore; import org.deved.antlride.core.util.AntlrCoreExtensionPointHelper; import org.deved.antlride.internal.ui.AntlrConsoleImpl; import org.deved.antlride.internal.ui.text.AntlrTextTools; import org.deved.antlride.ui.editor.AntlrEditorPageContribution; import org.eclipse.core.runtime.Preferences; import org.eclipse.core.runtime.Status; import org.eclipse.dltk.core.ISourceModule; import org.eclipse.dltk.ui.DLTKUIPlugin; import org.eclipse.jface.dialogs.MessageDialog; import org.eclipse.jface.preference.IPreferenceStore; import org.eclipse.jface.preference.PreferenceConverter; import org.eclipse.jface.resource.DataFormatException; import org.eclipse.jface.resource.JFaceResources; import org.eclipse.jface.resource.StringConverter; import org.eclipse.jface.util.IPropertyChangeListener; import org.eclipse.jface.util.PropertyChangeEvent; import org.eclipse.swt.graphics.RGB; import org.eclipse.swt.widgets.Display; import org.eclipse.ui.IEditorInput; import org.eclipse.ui.forms.FormColors; import org.eclipse.ui.forms.widgets.FormToolkit; import org.eclipse.ui.plugin.AbstractUIPlugin; import org.eclipse.ui.texteditor.AbstractTextEditor; import org.osgi.framework.BundleContext; import org.osgi.framework.ServiceReference; /** * The activator class controls the plug-in life cycle */ public class AntlrUI extends AbstractUIPlugin { private AntlrTextTools textTools; private IPropertyChangeListener fPropertyChangeListener; private FormToolkit fDialogsFormToolkit; // The plug-in ID public static final String PLUGIN_ID = "org.deved.antlride.ui"; // The shared instance private static AntlrUI plugin; /** * The constructor */ public AntlrUI() { } public synchronized AntlrTextTools getTextTools() { if (textTools == null) { textTools = new AntlrTextTools(true); } return textTools; } public AntlrEditorPageContribution[] getPageContributions() { List<AntlrEditorPageContribution> pages = AntlrCoreExtensionPointHelper.loadExtensions(AntlrUI.PLUGIN_ID, "editorPageContribution"); return pages.toArray(new AntlrEditorPageContribution[pages.size()]); } public void start(BundleContext context) throws Exception { super.start(context); plugin = this; context.registerService(AntlrConsole.class.getName(), new AntlrConsoleImpl(), new Hashtable<String, String>()); } @Override public IPreferenceStore getPreferenceStore() { final IPreferenceStore preferenceStore = super.getPreferenceStore(); if (fPropertyChangeListener == null) { fPropertyChangeListener = new IPropertyChangeListener() { public void propertyChange(PropertyChangeEvent event) { Preferences preferences = AntlrCore.getDefault().getPluginPreferences(); String property = event.getProperty(); if (property.startsWith("antlr_core")) { preferences.setValue(property, String.valueOf(event.getNewValue())); } else if (AntlrPreferenceConstants.getColorKeys().contains(property)) { Object value = event.getNewValue(); try { RGB color = value instanceof RGB ? (RGB) value : StringConverter.asRGB(value.toString()); JFaceResources.getColorRegistry().put(property, color); } catch (DataFormatException ex) { //Some values are not colors //ignore the exception } } } }; preferenceStore.addPropertyChangeListener(fPropertyChangeListener); } return preferenceStore; } public void stop(BundleContext context) throws Exception { plugin = null; super.stop(context); try { ServiceReference serviceReference = context.getServiceReference(AntlrConsole.class.getName()); context.ungetService(serviceReference); } catch (Exception ex) { ex.printStackTrace(); } } /** * Returns the shared instance * * @return the shared instance */ public static AntlrUI getDefault() { return plugin; } public FormToolkit getDialogsFormToolkit() { if (fDialogsFormToolkit == null) { FormColors colors = new FormColors(Display.getCurrent()); colors.setBackground(null); colors.setForeground(null); fDialogsFormToolkit = new FormToolkit(colors); } return fDialogsFormToolkit; } public static void error(String message) { error(message, null); } public static void warning(String message) { warning(message, null); } public static void info(String message) { info(message, null); } public static void error(Throwable throwable) { error(throwable.getMessage(), throwable); } public static void error(final String message, Throwable throwable) { org.eclipse.core.runtime.IStatus status = new Status(Status.ERROR, getDefault().getBundle().getSymbolicName(), 42, message, throwable); getDefault().getLog().log(status); } public static void warning(final String message, Throwable throwable) { org.eclipse.core.runtime.IStatus status = new Status(2, getDefault().getBundle().getSymbolicName(), 43, message, throwable); getDefault().getLog().log(status); Display.getDefault().asyncExec(new Runnable() { public void run() { MessageDialog.openWarning(null, "Antlr 3 Warning", message); } }); } public static void info(String message, Throwable throwable) { org.eclipse.core.runtime.IStatus status = new Status(1, getDefault().getBundle().getSymbolicName(), 44, message, throwable); getDefault().getLog().log(status); } public static ISourceModule getEditorInputModelElement(IEditorInput input) { ISourceModule sourceModule = (ISourceModule) DLTKUIPlugin.getEditorInputModelElement(input); if (sourceModule == null) { sourceModule = DLTKUIPlugin.getDefault().getWorkingCopyManager().getWorkingCopy(input, false); } return sourceModule; } }