Java tutorial
/* * Copyright (c) 2004-2011 Marco Maccaferri 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: * Marco Maccaferri - initial API and implementation */ package org.eclipsetrader.ui.internal.handlers; import org.eclipse.core.commands.AbstractHandler; import org.eclipse.core.commands.ExecutionEvent; import org.eclipse.core.commands.ExecutionException; import org.eclipse.core.runtime.IAdaptable; import org.eclipse.core.runtime.IProgressMonitor; import org.eclipse.core.runtime.IStatus; import org.eclipse.core.runtime.Status; import org.eclipse.jface.preference.IPreferenceNode; import org.eclipse.jface.preference.PreferenceManager; import org.eclipse.jface.viewers.IStructuredSelection; import org.eclipse.jface.window.Window; import org.eclipse.swt.custom.BusyIndicator; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Shell; import org.eclipse.ui.IWorkbenchSite; import org.eclipse.ui.dialogs.PropertyPage; import org.eclipse.ui.handlers.HandlerUtil; import org.eclipse.ui.internal.dialogs.FilteredPreferenceDialog; import org.eclipse.ui.internal.dialogs.PropertyPageContributorManager; import org.eclipse.ui.internal.dialogs.PropertyPageManager; import org.eclipsetrader.core.instruments.CurrencyExchange; import org.eclipsetrader.core.instruments.Security; import org.eclipsetrader.core.repositories.IRepository; import org.eclipsetrader.core.repositories.IRepositoryRunnable; import org.eclipsetrader.core.repositories.IRepositoryService; import org.eclipsetrader.core.repositories.IStoreObject; import org.eclipsetrader.ui.PriorityPreferenceNode; import org.eclipsetrader.ui.internal.UIActivator; import org.eclipsetrader.ui.internal.securities.properties.CurrencyGeneralProperties; import org.eclipsetrader.ui.internal.securities.properties.GeneralProperties; import org.osgi.framework.BundleContext; import org.osgi.framework.ServiceReference; @SuppressWarnings("restriction") public class SecurityPropertiesHandler extends AbstractHandler { private GeneralProperties generalProperties; private CurrencyGeneralProperties currencyGeneralProperties; public SecurityPropertiesHandler() { } /* (non-Javadoc) * @see org.eclipse.core.commands.AbstractHandler#execute(org.eclipse.core.commands.ExecutionEvent) */ @Override public Object execute(ExecutionEvent event) throws ExecutionException { IStructuredSelection selection = (IStructuredSelection) HandlerUtil.getCurrentSelection(event); IWorkbenchSite site = HandlerUtil.getActiveSite(event); if (selection != null && !selection.isEmpty()) { Object target = selection.getFirstElement(); if (target instanceof IAdaptable) { target = ((IAdaptable) target).getAdapter(Security.class); } if (target instanceof Security) { openPropertiesDialog(site.getShell(), getWrappedElement(target)); } } return null; } protected void openPropertiesDialog(Shell shell, final IAdaptable adaptableElement) { PropertyPageManager pageManager = new PropertyPageManager(); if (adaptableElement.getAdapter(Security.class) != null) { if (adaptableElement.getAdapter(CurrencyExchange.class) != null) { pageManager.addToRoot(new PriorityPreferenceNode("org.eclipsetrader.ui.propertypages.general", //$NON-NLS-1$ currencyGeneralProperties = new CurrencyGeneralProperties(), -1)); } else { pageManager.addToRoot(new PriorityPreferenceNode("org.eclipsetrader.ui.propertypages.general", //$NON-NLS-1$ generalProperties = new GeneralProperties(), -1)); } } PropertyPageContributorManager.getManager().contribute(pageManager, adaptableElement); for (Object nodeObj : pageManager.getElements(PreferenceManager.PRE_ORDER)) { IPreferenceNode node = (IPreferenceNode) nodeObj; if (node.getPage() instanceof PropertyPage) { ((PropertyPage) node.getPage()).setElement(adaptableElement); } } FilteredPreferenceDialog dlg = new FilteredPreferenceDialog(shell, pageManager) { @Override protected void configureShell(Shell newShell) { super.configureShell(newShell); Security security = (Security) adaptableElement.getAdapter(Security.class); newShell.setText(Messages.SecurityPropertiesHandler_PropertiesFor + security.getName()); } }; dlg.setHelpAvailable(false); if (dlg.open() == Window.OK) { BundleContext context = UIActivator.getDefault().getBundle().getBundleContext(); ServiceReference serviceReference = context.getServiceReference(IRepositoryService.class.getName()); if (serviceReference != null) { final IRepositoryService service = (IRepositoryService) context.getService(serviceReference); BusyIndicator.showWhile(Display.getDefault(), new Runnable() { @Override public void run() { service.runInService(new IRepositoryRunnable() { @Override public IStatus run(IProgressMonitor monitor) throws Exception { IStoreObject storeObject = (IStoreObject) adaptableElement .getAdapter(IStoreObject.class); IRepository repository = generalProperties != null ? generalProperties.getRepository() : currencyGeneralProperties.getRepository(); if (repository != storeObject.getStore().getRepository()) { service.moveAdaptable(new IAdaptable[] { adaptableElement }, repository); } else { service.saveAdaptable(new IAdaptable[] { adaptableElement }); } return Status.OK_STATUS; } }, null); } }); } } } /** * Wraps the element object to an IAdaptable instance, if necessary. * * @param element the object to wrap * @return an IAdaptable instance that wraps the object */ protected IAdaptable getWrappedElement(final Object element) { if (element instanceof IAdaptable) { return (IAdaptable) element; } return new IAdaptable() { @Override @SuppressWarnings("unchecked") public Object getAdapter(Class adapter) { if (adapter.isAssignableFrom(element.getClass())) { return element; } return null; } }; } }