Java tutorial
/******************************************************************************* * Copyright (c) 2004, 2008 Tasktop Technologies 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: * Tasktop Technologies - initial API and implementation *******************************************************************************/ package org.eclipse.dltk.internal.mylyn; import org.eclipse.core.runtime.IProgressMonitor; import org.eclipse.core.runtime.IStatus; import org.eclipse.core.runtime.Status; import org.eclipse.dltk.core.DLTKCore; import org.eclipse.dltk.internal.mylyn.editor.ActiveFoldingListener; import org.eclipse.dltk.internal.ui.editor.ScriptEditor; import org.eclipse.dltk.ui.DLTKUIPlugin; import org.eclipse.dltk.ui.PreferenceConstants; import org.eclipse.jface.preference.IPreferenceStore; import org.eclipse.jface.resource.ImageDescriptor; import org.eclipse.mylyn.commons.core.StatusHandler; import org.eclipse.mylyn.context.core.ContextCore; import org.eclipse.mylyn.context.ui.IContextUiStartup; import org.eclipse.mylyn.monitor.ui.MonitorUi; import org.eclipse.ui.IEditorPart; import org.eclipse.ui.IEditorReference; import org.eclipse.ui.IWorkbench; import org.eclipse.ui.IWorkbenchPage; import org.eclipse.ui.IWorkbenchWindow; import org.eclipse.ui.PlatformUI; import org.eclipse.ui.plugin.AbstractUIPlugin; import org.eclipse.ui.progress.UIJob; import org.osgi.framework.BundleContext; /** * @author Mik Kersten * @author Steffen Pingel */ public class DLTKUiBridgePlugin extends AbstractUIPlugin { public static final String ID_PLUGIN = "org.eclipse.dltk.mylyn"; //$NON-NLS-1$ public static final String AUTO_FOLDING_ENABLED = "org.eclipse.mylyn.context.ui.editor.folding.enabled"; //$NON-NLS-1$ private static DLTKUiBridgePlugin INSTANCE; private ActiveFoldingEditorTracker editorTracker; private TypeHistoryManager typeHistoryManager; private LandmarkMarkerManager landmarkMarkerManager; private DLTKEditingMonitor dltkEditingMonitor; private InterestUpdateDeltaListener dltkElementChangeListener; private static final String MYLYN_PREVIOUS_RUN = "org.eclipse.mylyn.ui.first.run.0_4_9"; //$NON-NLS-1$ private static final String MYLYN_RUN_COUNT = "org.eclipse.dltk.mylyn.run.count.1_1_0"; //$NON-NLS-1$ private static final String NUM_COMPUTERS_PREF_KEY = "content_assist_number_of_computers"; //$NON-NLS-1$ public DLTKUiBridgePlugin() { } /** * Startup order is critical. */ @Override public void start(BundleContext context) throws Exception { super.start(context); INSTANCE = this; IPreferenceStore dltkPrefs = DLTKUIPlugin.getDefault().getPreferenceStore(); // NOTE: moved out of wizard and first task activation to avoid bug // 194766 int count = getPreferenceStore().getInt(MYLYN_RUN_COUNT); if (count < 1) { getPreferenceStore().setValue(MYLYN_RUN_COUNT, count + 1); // Mylyn 3.1 removes 2 computers, migrate JDT setting on first run // to avoid prevent JDT from displaying a warning dialog if (count == 0 && getPreferenceStore().contains(MYLYN_PREVIOUS_RUN)) { if (dltkPrefs.contains(NUM_COMPUTERS_PREF_KEY)) { int lastNumberOfComputers = dltkPrefs.getInt(NUM_COMPUTERS_PREF_KEY); if (lastNumberOfComputers > 0) { dltkPrefs.putValue(NUM_COMPUTERS_PREF_KEY, Integer.toString(lastNumberOfComputers - 2)); } } } // try installing Task-Focused content assist twice new UIJob("Initialize Content Assist") { //$NON-NLS-1$ @Override public IStatus runInUIThread(IProgressMonitor monitor) { IPreferenceStore store = DLTKUIPlugin.getDefault().getPreferenceStore(); DLTKUiUtil.installContentAssist(store, false); return Status.OK_STATUS; } }.schedule(); } // the Task-Focused category should be disabled if the user reverts to // the default String defaultValue = dltkPrefs.getDefaultString(PreferenceConstants.CODEASSIST_EXCLUDED_CATEGORIES); dltkPrefs.setDefault(PreferenceConstants.CODEASSIST_EXCLUDED_CATEGORIES, defaultValue + DLTKUiUtil.ASSIST_MYLYN_ALL + DLTKUiUtil.SEPARATOR_CODEASSIST); } private void lazyStart() { landmarkMarkerManager = new LandmarkMarkerManager(); ContextCore.getContextManager().addListener(landmarkMarkerManager); dltkEditingMonitor = new DLTKEditingMonitor(); MonitorUi.getSelectionMonitors().add(dltkEditingMonitor); installEditorTracker(PlatformUI.getWorkbench()); dltkElementChangeListener = new InterestUpdateDeltaListener(); DLTKCore.addElementChangedListener(dltkElementChangeListener); try { typeHistoryManager = new TypeHistoryManager(); ContextCore.getContextManager().addListener(typeHistoryManager); } catch (Throwable t) { // FIXME review error message StatusHandler.log(new Status(IStatus.ERROR, DLTKUiBridgePlugin.ID_PLUGIN, "Could not install type history manager: incompatible Eclipse version", t)); //$NON-NLS-1$ } } private void lazyStop() { if (typeHistoryManager != null) { ContextCore.getContextManager().removeListener(typeHistoryManager); } if (landmarkMarkerManager != null) { ContextCore.getContextManager().removeListener(landmarkMarkerManager); } if (dltkEditingMonitor != null) { MonitorUi.getSelectionMonitors().remove(dltkEditingMonitor); } if (dltkElementChangeListener != null) { DLTKCore.removeElementChangedListener(dltkElementChangeListener); } // TODO: uninstall editor tracker } @Override public void stop(BundleContext context) throws Exception { lazyStop(); super.stop(context); INSTANCE = null; } private void installEditorTracker(IWorkbench workbench) { editorTracker = new ActiveFoldingEditorTracker(); editorTracker.install(workbench); // workbench.addWindowListener(editorTracker); // IWorkbenchWindow[] windows = workbench.getWorkbenchWindows(); // for (int i = 0; i < windows.length; i++) { // windows[i].addPageListener(editorTracker); // IWorkbenchPage[] pages = windows[i].getPages(); // for (int j = 0; j < pages.length; j++) { // pages[j].addPartListener(editorTracker); // } // } // update editors that are already opened for (IWorkbenchWindow w : PlatformUI.getWorkbench().getWorkbenchWindows()) { IWorkbenchPage page = w.getActivePage(); if (page != null) { IEditorReference[] references = page.getEditorReferences(); for (IEditorReference reference : references) { IEditorPart part = reference.getEditor(false); if (part != null && part instanceof ScriptEditor) { ScriptEditor editor = (ScriptEditor) part; editorTracker.registerEditor(editor); ActiveFoldingListener.resetProjection(editor); } } } } } /** * Returns the shared instance. */ public static DLTKUiBridgePlugin getDefault() { return INSTANCE; } /** * Returns an image descriptor for the image file at the given plug-in relative path. * * @param path * the path * @return the image descriptor */ public static ImageDescriptor getImageDescriptor(String path) { return AbstractUIPlugin.imageDescriptorFromPlugin(ID_PLUGIN, path); } /** * For testing. */ public ActiveFoldingEditorTracker getEditorTracker() { return editorTracker; } public static class DLTKUiBridgeStartup implements IContextUiStartup { public void lazyStartup() { DLTKUiBridgePlugin.getDefault().lazyStart(); } } }