Java tutorial
/* * Copyright (c) 2008 Stiftung Deutsches Elektronen-Synchrotron, * Member of the Helmholtz Association, (DESY), HAMBURG, GERMANY. * * THIS SOFTWARE IS PROVIDED UNDER THIS LICENSE ON AN "../AS IS" BASIS. * WITHOUT WARRANTY OF ANY KIND, EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED * TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR PARTICULAR PURPOSE AND * NON-INFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE * FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR * THE USE OR OTHER DEALINGS IN THE SOFTWARE. SHOULD THE SOFTWARE PROVE DEFECTIVE * IN ANY RESPECT, THE USER ASSUMES THE COST OF ANY NECESSARY SERVICING, REPAIR OR * CORRECTION. THIS DISCLAIMER OF WARRANTY CONSTITUTES AN ESSENTIAL PART OF THIS LICENSE. * NO USE OF ANY SOFTWARE IS AUTHORIZED HEREUNDER EXCEPT UNDER THIS DISCLAIMER. * DESY HAS NO OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, * OR MODIFICATIONS. * THE FULL LICENSE SPECIFYING FOR THE SOFTWARE THE REDISTRIBUTION, MODIFICATION, * USAGE AND OTHER RIGHTS AND OBLIGATIONS IS INCLUDED WITH THE DISTRIBUTION OF THIS * PROJECT IN THE FILE LICENSE.HTML. IF THE LICENSE IS NOT INCLUDED YOU MAY FIND A COPY * AT HTTP://WWW.DESY.DE/LEGAL/LICENSE.HTM */ package org.csstudio.dal.ui.internal.developmentsupport.util; import java.util.ArrayList; import java.util.List; import org.csstudio.dal.ui.dnd.rfc.IProcessVariableAdressReceiver; import org.csstudio.dal.ui.dnd.rfc.ProcessVariableExchangeUtil; import org.csstudio.platform.model.pvs.IProcessVariableAddress; import org.csstudio.platform.model.pvs.IProcessVariableAdressProvider; import org.csstudio.platform.model.pvs.ProcessVariableAdressFactory; import org.eclipse.jface.action.GroupMarker; import org.eclipse.jface.action.MenuManager; import org.eclipse.jface.action.Separator; import org.eclipse.jface.viewers.IStructuredSelection; import org.eclipse.jface.viewers.TreeViewer; import org.eclipse.swt.dnd.DND; import org.eclipse.swt.dnd.DragSource; import org.eclipse.swt.dnd.DragSourceAdapter; import org.eclipse.swt.dnd.DragSourceEvent; import org.eclipse.swt.dnd.DropTargetEvent; import org.eclipse.swt.dnd.TextTransfer; import org.eclipse.swt.dnd.Transfer; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Menu; import org.eclipse.ui.IWorkbenchActionConstants; import org.eclipse.ui.model.BaseWorkbenchContentProvider; import org.eclipse.ui.model.WorkbenchLabelProvider; import org.eclipse.ui.part.ViewPart; /** * A view, which is used for DnD demos. * * @author Sven Wende * @version $Revision$ */ public final class ContainerView extends ViewPart { private static String[] _sampleStrings; private static IProcessVariableAddress[] _samplePvAdresses; static { _sampleStrings = new String[] { "a", "b" }; final ProcessVariableAdressFactory f = ProcessVariableAdressFactory.getInstance(); _samplePvAdresses = new IProcessVariableAddress[] { f.createProcessVariableAdress("epics://cryo/pump1"), f.createProcessVariableAdress("epics://cryo/pump2"), f.createProcessVariableAdress("epics://cryo/pump3"), f.createProcessVariableAdress("tine://cryo/pump1"), f.createProcessVariableAdress("tine://cryo/pump2"), f.createProcessVariableAdress("tine://cryo/pump3"), f.createProcessVariableAdress("tango://cryo/pump1"), f.createProcessVariableAdress("tango://cryo/pump2"), f.createProcessVariableAdress("tango://cryo/pump3"), f.createProcessVariableAdress("dal-epics://cryo/pump1"), f.createProcessVariableAdress("dal-epics://cryo/pump2"), f.createProcessVariableAdress("dal-epics://cryo/pump3"), f.createProcessVariableAdress("dal-tine://cryo/pump1"), f.createProcessVariableAdress("dal-tine://cryo/pump2"), f.createProcessVariableAdress("dal-tine://cryo/pump3"), f.createProcessVariableAdress("dal-tango://cryo/pump1"), f.createProcessVariableAdress("dal-tango://cryo/pump2"), f.createProcessVariableAdress("dal-tango://cryo/pump3") }; } /** * The ID of this view as configured in the plugin manifest. */ public static final String ID = "org.csstudio.platform.developmentsupport.util.ui.ContainerView"; //$NON-NLS-1$ /** * {@inheritDoc} */ @Override public void createPartControl(final Composite parent) { createPvProviderTree(parent); createTextProviderTree(parent); createPvConsumerTree(parent); } private final List<IProcessVariableAddress> _modelForPvConsumer = new ArrayList<IProcessVariableAddress>(); private void createPvConsumerTree(final Composite parent) { final TreeViewer tv = new TreeViewer(parent); tv.setContentProvider(new BaseWorkbenchContentProvider() { /** * {@inheritDoc} */ @Override public Object[] getElements(final Object element) { return ((List) element).toArray(); } }); tv.setLabelProvider(new WorkbenchLabelProvider()); tv.setInput(_modelForPvConsumer); getViewSite().setSelectionProvider(tv); // add drag support ProcessVariableExchangeUtil.addProcessVariableAddressDropSupport(tv.getControl(), DND.DROP_MOVE | DND.DROP_COPY, new IProcessVariableAdressReceiver() { @Override public void receive(final IProcessVariableAddress[] pvs, final DropTargetEvent event) { for (final IProcessVariableAddress pv : pvs) { _modelForPvConsumer.add(pv); } tv.refresh(); } }); // create context menu configureContextMenu(tv); } private void createPvProviderTree(final Composite parent) { final TreeViewer tv = new TreeViewer(parent); tv.setContentProvider(new BaseWorkbenchContentProvider() { /** * {@inheritDoc} */ @Override public Object[] getElements(final Object element) { return (Object[]) element; } }); tv.setLabelProvider(new WorkbenchLabelProvider()); tv.setInput(_samplePvAdresses); getViewSite().setSelectionProvider(tv); // add drag support ProcessVariableExchangeUtil.addProcessVariableAdressDragSupport(tv.getTree(), DND.DROP_MOVE | DND.DROP_COPY, new IProcessVariableAdressProvider() { @Override public IProcessVariableAddress getPVAdress() { final List<IProcessVariableAddress> l = getProcessVariableAdresses(); if (l.size() > 0) { return l.get(0); } return null; } @Override public List<IProcessVariableAddress> getProcessVariableAdresses() { final IStructuredSelection sel = (IStructuredSelection) tv.getSelection(); final List<IProcessVariableAddress> list = sel.toList(); return list; } }); // create context menu configureContextMenu(tv); } private void createTextProviderTree(final Composite parent) { final TreeViewer tv = new TreeViewer(parent); tv.setContentProvider(new BaseWorkbenchContentProvider() { /** * {@inheritDoc} */ @Override public Object[] getElements(final Object element) { return (Object[]) element; } }); tv.setLabelProvider(new WorkbenchLabelProvider()); tv.setInput(_sampleStrings); getViewSite().setSelectionProvider(tv); // add drag support // FIXME: nur Text-Support anbieten // ProcessVariableExchangeUtil.addProcessVariableAdressDragSupport( // pvAdressesTv.getTree(), DND.DROP_MOVE | DND.DROP_COPY, this); final DragSource dragSource = new DragSource(tv.getControl(), DND.DROP_MOVE | DND.DROP_COPY); final Transfer[] types = new Transfer[] { TextTransfer.getInstance() }; dragSource.setTransfer(types); dragSource.addDragListener(new DragSourceAdapter() { @Override public void dragSetData(final DragSourceEvent event) { if (TextTransfer.getInstance().isSupportedType(event.dataType)) { final IStructuredSelection sel = (IStructuredSelection) tv.getSelection(); final List<String> list = sel.toList(); final StringBuffer sb = new StringBuffer(); for (final String s : list) { sb.append(s); sb.append("\n"); //$NON-NLS-1$ } event.data = sb.toString(); } } }); // create context menu configureContextMenu(tv); } /** * {@inheritDoc} */ @Override public void setFocus() { } /** * Configures all listeners for the TreeViewer. */ private void configureContextMenu(final TreeViewer tv) { final MenuManager menuMgr = new MenuManager("", ID); //$NON-NLS-1$ // menuMgr.add(new GroupMarker(IWorkbenchIds.GROUP_CSS_MB3)); menuMgr.add(new Separator()); menuMgr.add(new GroupMarker(IWorkbenchActionConstants.MB_ADDITIONS)); menuMgr.setRemoveAllWhenShown(true); final Menu contextMenu = menuMgr.createContextMenu(tv.getTree()); tv.getTree().setMenu(contextMenu); // Register viewer with site. This has to be done before making the // actions. getViewSite().registerContextMenu(menuMgr, tv); getViewSite().setSelectionProvider(tv); } }