Java tutorial
/******************************************************************************* * Copyright (c) 2006, 2009 Wind River Systems 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: * Wind River Systems - initial API and implementation * Ericsson AB - Modules view for DSF implementation *******************************************************************************/ package org.eclipse.cdt.dsf.debug.ui.viewmodel.modules; import java.util.Map; import java.util.concurrent.RejectedExecutionException; import org.eclipse.cdt.dsf.concurrent.ConfinedToDsfExecutor; import org.eclipse.cdt.dsf.concurrent.DsfRunnable; import org.eclipse.cdt.dsf.concurrent.RequestMonitor; import org.eclipse.cdt.dsf.datamodel.IDMContext; import org.eclipse.cdt.dsf.debug.service.IModules; import org.eclipse.cdt.dsf.debug.service.IRunControl; import org.eclipse.cdt.dsf.debug.service.IModules.IModuleDMContext; import org.eclipse.cdt.dsf.debug.service.IModules.IModuleDMData; import org.eclipse.cdt.dsf.debug.service.IModules.ISymbolDMContext; import org.eclipse.cdt.dsf.debug.ui.IDsfDebugUIConstants; import org.eclipse.cdt.dsf.internal.ui.DsfUILabelImage; import org.eclipse.cdt.dsf.service.DsfSession; import org.eclipse.cdt.dsf.ui.concurrent.ViewerDataRequestMonitor; import org.eclipse.cdt.dsf.ui.viewmodel.VMDelta; import org.eclipse.cdt.dsf.ui.viewmodel.datamodel.AbstractDMVMNode; import org.eclipse.cdt.dsf.ui.viewmodel.datamodel.AbstractDMVMProvider; import org.eclipse.cdt.dsf.ui.viewmodel.datamodel.IDMVMContext; import org.eclipse.cdt.dsf.ui.viewmodel.properties.IElementPropertiesProvider; import org.eclipse.cdt.dsf.ui.viewmodel.properties.IPropertiesUpdate; import org.eclipse.cdt.dsf.ui.viewmodel.properties.LabelAttribute; import org.eclipse.cdt.dsf.ui.viewmodel.properties.LabelColumnInfo; import org.eclipse.cdt.dsf.ui.viewmodel.properties.LabelFont; import org.eclipse.cdt.dsf.ui.viewmodel.properties.LabelText; import org.eclipse.cdt.dsf.ui.viewmodel.properties.PropertiesBasedLabelProvider; import org.eclipse.cdt.dsf.ui.viewmodel.update.StaleDataLabelBackground; import org.eclipse.core.runtime.IStatus; import org.eclipse.debug.internal.ui.viewers.model.provisional.IChildrenUpdate; import org.eclipse.debug.internal.ui.viewers.model.provisional.IElementLabelProvider; import org.eclipse.debug.internal.ui.viewers.model.provisional.ILabelUpdate; import org.eclipse.debug.internal.ui.viewers.model.provisional.IModelDelta; import org.eclipse.debug.ui.IDebugUIConstants; import org.eclipse.jface.resource.JFaceResources; /** * @since 1.0 */ public class ModulesVMNode extends AbstractDMVMNode implements IElementLabelProvider, IElementPropertiesProvider { /** * Marker type for the modules VM context. It allows action enablement * expressions to check for module context type. */ public class ModuleVMContext extends DMVMContext { protected ModuleVMContext(IDMContext dmc) { super(dmc); } } /** * @since 2.0 */ public static final String PROP_IS_LOADED = "is_loaded"; //$NON-NLS-1$ /** * The label provider delegate. This VM node will delegate label updates to this provider * which can be created by sub-classes. * * @since 2.0 */ private IElementLabelProvider fLabelProvider; /** * Creates the label provider delegate. This VM node will delegate label * updates to this provider which can be created by sub-classes. * * @return Returns the label provider for this node. * * @since 2.0 */ protected IElementLabelProvider createLabelProvider() { PropertiesBasedLabelProvider provider = new PropertiesBasedLabelProvider(); provider.setColumnInfo(PropertiesBasedLabelProvider.ID_COLUMN_NO_COLUMNS, new LabelColumnInfo(new LabelAttribute[] { new LabelText(MessagesForModulesVM.ModulesVMNode_No_columns__text_format, new String[] { PROP_NAME }), new DsfUILabelImage(IDsfDebugUIConstants.IMG_OBJS_SHARED_LIBRARY_SYMBOLS_LOADED) { { setPropertyNames(new String[] { PROP_IS_LOADED }); } @Override public boolean checkProperty(String propertyName, IStatus status, Map<String, Object> properties) { if (PROP_IS_LOADED.equals(propertyName)) { return Boolean.TRUE.equals(properties.get(propertyName)); } return super.checkProperty(propertyName, status, properties); }; }, new DsfUILabelImage(IDsfDebugUIConstants.IMG_OBJS_SHARED_LIBRARY_SYMBOLS_UNLOADED), new StaleDataLabelBackground(), new LabelFont(JFaceResources .getFontDescriptor(IDebugUIConstants.PREF_VARIABLE_TEXT_FONT).getFontData()[0]) })); return provider; } public ModulesVMNode(AbstractDMVMProvider provider, DsfSession session) { super(provider, session, IModuleDMContext.class); fLabelProvider = createLabelProvider(); } @Override public String toString() { return "ModulesVMNode(" + getSession().getId() + ")"; //$NON-NLS-1$ //$NON-NLS-2$ } @Override protected void updateElementsInSessionThread(final IChildrenUpdate update) { IModules modulesService = getServicesTracker().getService(IModules.class); final ISymbolDMContext symDmc = findDmcInPath(update.getViewerInput(), update.getElementPath(), ISymbolDMContext.class); if (modulesService == null || symDmc == null) { handleFailedUpdate(update); return; } modulesService.getModules(symDmc, new ViewerDataRequestMonitor<IModuleDMContext[]>(getSession().getExecutor(), update) { @Override public void handleCompleted() { if (!isSuccess()) { update.done(); return; } fillUpdateWithVMCs(update, getData()); update.done(); } }); } @Override protected IDMVMContext createVMContext(IDMContext dmc) { return new ModuleVMContext(dmc); } /* * @since 2.0 */ @Override public void update(final IPropertiesUpdate[] updates) { try { getSession().getExecutor().execute(new DsfRunnable() { @Override public void run() { updatePropertiesInSessionThread(updates); } }); } catch (RejectedExecutionException e) { for (IPropertiesUpdate update : updates) { handleFailedUpdate(update); } } } @Override public void update(final ILabelUpdate[] updates) { fLabelProvider.update(updates); } /** * @since 2.0 */ @ConfinedToDsfExecutor("getSession().getExecutor()") protected void updatePropertiesInSessionThread(final IPropertiesUpdate[] updates) { IModules modulesService = getServicesTracker().getService(IModules.class); for (final IPropertiesUpdate update : updates) { final IModuleDMContext dmc = findDmcInPath(update.getViewerInput(), update.getElementPath(), IModuleDMContext.class); // If either update or service are not valid, fail the update and exit. if (modulesService == null || dmc == null) { handleFailedUpdate(update); return; } modulesService.getModuleData(dmc, new ViewerDataRequestMonitor<IModuleDMData>(getSession().getExecutor(), update) { @Override protected void handleSuccess() { fillModuleDataProperties(update, getData()); update.done(); } }); } } /** * @since 2.0 */ protected void fillModuleDataProperties(IPropertiesUpdate update, IModuleDMData data) { update.setProperty(PROP_NAME, data.getName()); update.setProperty(PROP_IS_LOADED, data.isSymbolsLoaded()); } @Override public int getDeltaFlags(Object e) { if (e instanceof IRunControl.ISuspendedDMEvent) { return IModelDelta.CONTENT; } return IModelDelta.NO_CHANGE; } @Override public void buildDelta(Object e, VMDelta parentDelta, int nodeOffset, RequestMonitor rm) { if (e instanceof IRunControl.ISuspendedDMEvent) { // Create a delta that indicates all groups have changed parentDelta.setFlags(parentDelta.getFlags() | IModelDelta.CONTENT); } rm.done(); } }