Java tutorial
/******************************************************************************* * Copyright (c) 2000, 2011 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 com.siteview.mde.internal.ui; import java.lang.reflect.InvocationTargetException; import java.net.URL; import java.util.Hashtable; import org.eclipse.core.resources.IWorkspace; import org.eclipse.core.resources.ResourcesPlugin; import org.eclipse.core.runtime.*; import org.eclipse.jface.dialogs.ErrorDialog; import org.eclipse.jface.dialogs.IDialogSettings; import org.eclipse.jface.preference.IPreferenceStore; import com.siteview.mde.internal.core.MDEPreferencesManager; import com.siteview.mde.internal.ui.launcher.PDELogFileProvider; import com.siteview.mde.internal.ui.util.SWTUtil; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Shell; import org.eclipse.ui.IWorkbenchPage; import org.eclipse.ui.IWorkbenchWindow; import org.eclipse.ui.editors.text.TextFileDocumentProvider; import org.eclipse.ui.forms.FormColors; import org.eclipse.ui.internal.views.log.ILogFileProvider; import org.eclipse.ui.internal.views.log.LogFilesManager; import org.eclipse.ui.plugin.AbstractUIPlugin; import org.eclipse.ui.texteditor.IDocumentProvider; import org.osgi.framework.BundleContext; public class MDEPlugin extends AbstractUIPlugin implements IMDEUIConstants { // Shared instance private static MDEPlugin fInstance; private Hashtable fCounters; // Provides Launch Configurations log files to Log View private ILogFileProvider fLogFileProvider; // Shared colors for all forms private FormColors fFormColors; private MDELabelProvider fLabelProvider; /** * The shared text file document provider. * @since 3.2 */ private IDocumentProvider fTextFileDocumentProvider; private MDEPreferencesManager fPreferenceManager; public MDEPlugin() { fInstance = this; } public MDEPreferencesManager getPreferenceManager() { if (fPreferenceManager == null) { fPreferenceManager = new MDEPreferencesManager(PLUGIN_ID); } return fPreferenceManager; } public URL getInstallURL() { return getDefault().getBundle().getEntry("/"); //$NON-NLS-1$ } /** * @return The active workbench page or <code>null</code> if the workbench is shutting down */ public static IWorkbenchPage getActivePage() { return getDefault().internalGetActivePage(); } public static Shell getActiveWorkbenchShell() { IWorkbenchWindow window = getActiveWorkbenchWindow(); if (window != null) { return window.getShell(); } return null; } /** * Returns the currently active window for the workbench (if any). Returns * <code>null</code> if there is no active workbench window. Returns * <code>null</code> if called from a non-UI thread. * * @return the active workbench window, or <code>null</code> if there is * no active workbench window or if called from a non-UI thread */ public static IWorkbenchWindow getActiveWorkbenchWindow() { return getDefault().getWorkbench().getActiveWorkbenchWindow(); } public static MDEPlugin getDefault() { return fInstance; } public Hashtable getDefaultNameCounters() { if (fCounters == null) fCounters = new Hashtable(); return fCounters; } public static String getPluginId() { return getDefault().getBundle().getSymbolicName(); } public static IWorkspace getWorkspace() { return ResourcesPlugin.getWorkspace(); } /** * @return The active workbench page or <code>null</code> if the workbench is shutting down */ private IWorkbenchPage internalGetActivePage() { IWorkbenchWindow workbenchWin = getWorkbench().getActiveWorkbenchWindow(); return workbenchWin != null ? workbenchWin.getActivePage() : null; } public static void log(IStatus status) { ResourcesPlugin.getPlugin().getLog().log(status); } public static void logErrorMessage(String message) { log(new Status(IStatus.ERROR, getPluginId(), IStatus.ERROR, message, null)); } public static void logException(Throwable e, final String title, String message) { if (e instanceof InvocationTargetException) { e = ((InvocationTargetException) e).getTargetException(); } IStatus status = null; if (e instanceof CoreException) status = ((CoreException) e).getStatus(); else { if (message == null) message = e.getMessage(); if (message == null) message = e.toString(); status = new Status(IStatus.ERROR, getPluginId(), IStatus.OK, message, e); } ResourcesPlugin.getPlugin().getLog().log(status); Display display = SWTUtil.getStandardDisplay(); final IStatus fstatus = status; display.asyncExec(new Runnable() { public void run() { ErrorDialog.openError(null, title, null, fstatus); } }); } public static void logException(Throwable e) { logException(e, null, null); } public static void log(Throwable e) { if (e instanceof InvocationTargetException) e = ((InvocationTargetException) e).getTargetException(); IStatus status = null; if (e instanceof CoreException) status = ((CoreException) e).getStatus(); else status = new Status(IStatus.ERROR, getPluginId(), IStatus.OK, e.getMessage(), e); log(status); } public FormColors getFormColors(Display display) { if (fFormColors == null) { fFormColors = new FormColors(display); fFormColors.markShared(); } return fFormColors; } /* (non-Javadoc) * @see org.eclipse.core.runtime.Plugin#start(org.osgi.framework.BundleContext) */ public void start(BundleContext context) throws Exception { super.start(context); fLogFileProvider = new PDELogFileProvider(); LogFilesManager.addLogFileProvider(fLogFileProvider); } /* (non-Javadoc) * @see org.eclipse.ui.plugin.AbstractUIPlugin#stop(org.osgi.framework.BundleContext) */ public void stop(BundleContext context) throws Exception { if (fFormColors != null) { fFormColors.dispose(); fFormColors = null; } if (fLabelProvider != null) { fLabelProvider.dispose(); fLabelProvider = null; } if (fLogFileProvider != null) { LogFilesManager.removeLogFileProvider(fLogFileProvider); fLogFileProvider = null; } Utilities.shutdown(); super.stop(context); } public MDELabelProvider getLabelProvider() { if (fLabelProvider == null) fLabelProvider = new MDELabelProvider(); return fLabelProvider; } public static boolean isFullNameModeEnabled() { IPreferenceStore store = getDefault().getPreferenceStore(); return store.getString(IPreferenceConstants.PROP_SHOW_OBJECTS).equals(IPreferenceConstants.VALUE_USE_NAMES); } /** * Returns the shared text file document provider for this plug-in. * * @return the shared text file document provider * @since 3.2 */ public synchronized IDocumentProvider getTextFileDocumentProvider() { if (fTextFileDocumentProvider == null) fTextFileDocumentProvider = new TextFileDocumentProvider(); return fTextFileDocumentProvider; } /** * Returns a section in the PDE UI plug-in's dialog settings. If the section doesn't exist yet, it is created. * * @param name the name of the section * @return the section of the given name * @since 3.6.100 */ public IDialogSettings getDialogSettingsSection(String name) { IDialogSettings dialogSettings = getDialogSettings(); IDialogSettings section = dialogSettings.getSection(name); if (section == null) { section = dialogSettings.addNewSection(name); } return section; } }