Java tutorial
/******************************************************************************* * Copyright (c) 2008, 2009 Topic Maps Lab 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: * Hannes Niederhausen - initial API and implementation *******************************************************************************/ /** * */ package de.topicmapslab.tmcledit.diagram.editor; import java.util.ArrayList; import java.util.Iterator; import java.util.List; import org.eclipse.core.runtime.IProgressMonitor; import org.eclipse.draw2d.IFigure; import org.eclipse.emf.common.notify.Notification; import org.eclipse.emf.common.notify.impl.AdapterImpl; import org.eclipse.emf.ecore.EObject; import org.eclipse.emf.edit.domain.EditingDomain; import org.eclipse.gef.EditPart; import org.eclipse.gef.EditPartViewer; import org.eclipse.gef.GraphicalViewer; import org.eclipse.gef.LayerConstants; import org.eclipse.gef.MouseWheelHandler; import org.eclipse.gef.MouseWheelZoomHandler; import org.eclipse.gef.Tool; import org.eclipse.gef.commands.CommandStack; import org.eclipse.gef.dnd.TemplateTransferDragSourceListener; import org.eclipse.gef.dnd.TemplateTransferDropTargetListener; import org.eclipse.gef.editparts.ScalableFreeformRootEditPart; import org.eclipse.gef.editparts.ZoomManager; import org.eclipse.gef.palette.MarqueeToolEntry; import org.eclipse.gef.palette.PaletteGroup; import org.eclipse.gef.palette.PaletteRoot; import org.eclipse.gef.tools.SelectionTool; import org.eclipse.gef.ui.actions.ActionRegistry; import org.eclipse.gef.ui.actions.ZoomInAction; import org.eclipse.gef.ui.actions.ZoomOutAction; import org.eclipse.gef.ui.palette.FlyoutPaletteComposite; import org.eclipse.gef.ui.palette.PaletteViewer; import org.eclipse.gef.ui.palette.PaletteViewerProvider; import org.eclipse.gef.ui.parts.GraphicalEditorWithFlyoutPalette; import org.eclipse.jface.action.Action; import org.eclipse.jface.action.IAction; import org.eclipse.jface.util.TransferDropTargetListener; import org.eclipse.jface.viewers.ISelection; import org.eclipse.jface.viewers.ISelectionChangedListener; import org.eclipse.jface.viewers.ISelectionProvider; import org.eclipse.jface.viewers.IStructuredSelection; import org.eclipse.jface.viewers.SelectionChangedEvent; import org.eclipse.jface.viewers.StructuredSelection; import org.eclipse.swt.SWT; import org.eclipse.swt.events.MouseAdapter; import org.eclipse.swt.events.MouseEvent; import org.eclipse.ui.IActionBars; import org.eclipse.ui.IEditorInput; import org.eclipse.ui.IEditorPart; import org.eclipse.ui.IEditorSite; import org.eclipse.ui.IWorkbenchPage; import org.eclipse.ui.PartInitException; import org.eclipse.ui.actions.ActionFactory; import org.eclipse.ui.views.contentoutline.IContentOutlinePage; import de.topicmapslab.tmcledit.diagram.DiagramActivator; import de.topicmapslab.tmcledit.diagram.action.AbstractSelectionAction; import de.topicmapslab.tmcledit.diagram.action.AddNameConstraintAction; import de.topicmapslab.tmcledit.diagram.action.AddOccurrenceConstraintAction; import de.topicmapslab.tmcledit.diagram.action.DeleteFromModelAction; import de.topicmapslab.tmcledit.diagram.action.RemoveFromDiagramAction; import de.topicmapslab.tmcledit.diagram.editparts.MoveableLabelEditPart; import de.topicmapslab.tmcledit.diagram.util.IPrintableDiagramEditor; import de.topicmapslab.tmcledit.model.AssociationNode; import de.topicmapslab.tmcledit.model.Diagram; import de.topicmapslab.tmcledit.model.Edge; import de.topicmapslab.tmcledit.model.File; import de.topicmapslab.tmcledit.model.ModelPackage; import de.topicmapslab.tmcledit.model.TypeNode; import de.topicmapslab.tmcledit.model.util.TMCLEditorInput; import de.topicmapslab.tmcledit.model.views.ModelView; /** * @author Hannes Niederhausen * @param <Action> * */ public class TMCLDiagramEditor extends GraphicalEditorWithFlyoutPalette implements ISelectionChangedListener, ISelectionProvider, IPrintableDiagramEditor { /** * ID of the editor in the plugin.xml */ public static final String ID = "de.topicmapslab.tmcledit.diagram.editor.TMCLDiagramEditor"; private Diagram diagram; private File file; private ScalableFreeformRootEditPart rootEditPart; private ISelection currentSelection; private DirtyAdapter dirtyAdapter; private OverviewOutlinePage outlinePage; private TMCLEditorContextMenuProvider cmProvider; private ModelView modelView; /** * Constructor */ public TMCLDiagramEditor() { setEditDomain(new TMCLEditDomain(this)); } @Override public void init(IEditorSite site, IEditorInput input) throws PartInitException { super.init(site, input); setPartName(input.getName()); getPalettePreferences().setPaletteState(FlyoutPaletteComposite.STATE_PINNED_OPEN); getPalettePreferences().setPaletteWidth(200); } @Override protected void initializeGraphicalViewer() { super.initializeGraphicalViewer(); GraphicalViewer viewer = getGraphicalViewer(); viewer.setContents(diagram); // set the contents of this editor viewer.addSelectionChangedListener(this); viewer.setEditDomain(getEditDomain()); getSite().setSelectionProvider(this); // listen for dropped parts viewer.addDropTargetListener(new TypeDropTransferListener(viewer, diagram)); viewer.getControl().addMouseListener(new DiagramMouseListener()); } protected org.eclipse.emf.common.command.CommandStack getEMFCommandStack() { return ((TMCLEditDomain) getEditDomain()).getEditingDomain().getCommandStack(); } @Override protected void configureGraphicalViewer() { super.configureGraphicalViewer(); GraphicalViewer viewer = getGraphicalViewer(); viewer.setEditPartFactory(TMCLDiagramEditorUtil.getEditPartFactory()); viewer.setRootEditPart(getRootEditPart()); viewer.setKeyHandler(new OnotoaKeyHandler(viewer, getActionRegistry())); cmProvider = new TMCLEditorContextMenuProvider(viewer, getActionRegistry(), diagram); getGraphicalViewer().setContextMenu(cmProvider); getSite().registerContextMenu(cmProvider, viewer); List<String> zoomContributions = new ArrayList<String>(5); zoomContributions.add(ZoomManager.FIT_ALL); zoomContributions.add(ZoomManager.FIT_HEIGHT); zoomContributions.add(ZoomManager.FIT_WIDTH); ZoomManager manager = (ZoomManager) getGraphicalViewer().getProperty(ZoomManager.class.toString()); manager.setZoomLevelContributions(zoomContributions); IAction zoomIn = new ZoomInAction(manager); zoomIn.setAccelerator(0); IAction zoomOut = new ZoomOutAction(manager); getActionRegistry().registerAction(zoomIn); getActionRegistry().registerAction(zoomOut); viewer.setProperty(MouseWheelHandler.KeyGenerator.getKey(SWT.CTRL), MouseWheelZoomHandler.SINGLETON); getPalettePreferences().setPaletteState(FlyoutPaletteComposite.STATE_PINNED_OPEN); getGraphicalViewer().addDropTargetListener( (TransferDropTargetListener) new TemplateTransferDropTargetListener(getGraphicalViewer())); } private ScalableFreeformRootEditPart getRootEditPart() { if (rootEditPart == null) { rootEditPart = new ScalableFreeformRootEditPart(); } return rootEditPart; } /** * * @return the emf editing domain in the editor input */ public EditingDomain getEditingDomain() { return ((TMCLEditorInput) getEditorInput()).getEditingDomain(); } /** * * @return the instance of {@link Diagram} to edit */ public Diagram getDiagram() { return diagram; } @Override public ActionRegistry getActionRegistry() { return super.getActionRegistry(); } @Override public void doSave(IProgressMonitor monitor) { modelView.doSave(monitor); } @Override protected PaletteViewerProvider createPaletteViewerProvider() { return new PaletteViewerProvider(getEditDomain()) { @Override protected void configurePaletteViewer(PaletteViewer viewer) { super.configurePaletteViewer(viewer); viewer.addDragSourceListener(new TemplateTransferDragSourceListener(viewer)); } }; } @Override public void doSaveAs() { modelView.doSaveAs(); } @Override protected void createActions() { getActionRegistry().registerAction(new RemoveFromDiagramAction(getEMFCommandStack())); getActionRegistry().registerAction(new DeleteFromModelAction(getEMFCommandStack())); getActionRegistry().registerAction(new AddNameConstraintAction(getEMFCommandStack())); getActionRegistry().registerAction(new AddOccurrenceConstraintAction(getEMFCommandStack())); super.createActions(); } @Override protected void setInput(IEditorInput input) { super.setInput(input); TMCLEditorInput ei = (TMCLEditorInput) input; this.diagram = ei.getDiagram(); file = ((File) diagram.eContainer()); this.modelView = ei.getModelView(); ((TMCLEditDomain) getEditDomain()).setEditingDomain(ei.getEditingDomain()); setTitleImage(input.getImageDescriptor().createImage()); dirtyAdapter = new DirtyAdapter(); file.eAdapters().add(dirtyAdapter); diagram.eAdapters().add(dirtyAdapter); ActionRegistry ar = ei.getActionRegistry(); IActionBars actionBars = getEditorSite().getActionBars(); IAction a = ar.getAction(ActionFactory.UNDO.getId()); actionBars.setGlobalActionHandler(a.getId(), a); getActionRegistry().registerAction(a); a = ar.getAction(ActionFactory.REDO.getId()); actionBars.setGlobalActionHandler(a.getId(), a); getActionRegistry().registerAction(a); a = ar.getAction(ActionFactory.SAVE.getId()); actionBars.setGlobalActionHandler(a.getId(), a); getActionRegistry().registerAction(a); a = ar.getAction(ActionFactory.CLOSE.getId()); getActionRegistry().registerAction(a); } @Override public boolean isSaveOnCloseNeeded() { return false; } @Override public boolean isSaveAsAllowed() { return modelView.isSaveAsAllowed(); } @Override public boolean isDirty() { return modelView.isDirty(); } @Override public void dispose() { diagram.eAdapters().remove(dirtyAdapter); file.eAdapters().remove(dirtyAdapter); super.dispose(); } @SuppressWarnings("unchecked") @Override public Object getAdapter(Class adapter) { if (adapter == EditPartViewer.class) return getGraphicalViewer(); if (adapter == IWorkbenchPage.class) return getSite().getPage(); if (adapter == TMCLDiagramEditor.class) return this; if (adapter == ISelectionProvider.class) return this; if (adapter == EditingDomain.class) return getEditingDomain(); if (adapter == CommandStack.class) return getEditDomain().getCommandStack(); if (adapter == IContentOutlinePage.class) return getContentOutlinePage(); if (adapter == ZoomManager.class) return getGraphicalViewer().getProperty(ZoomManager.class.toString()); if (adapter == org.eclipse.emf.common.command.CommandStack.class) return getEditingDomain().getCommandStack(); return super.getAdapter(adapter); } /** * @return the outine page of the editor */ public IContentOutlinePage getContentOutlinePage() { if ((outlinePage == null) && (null != getGraphicalViewer())) { outlinePage = new OverviewOutlinePage( (ScalableFreeformRootEditPart) getGraphicalViewer().getRootEditPart()); } return outlinePage; } @Override protected PaletteRoot getPaletteRoot() { return TMCLDiagramEditorUtil.getPaletteRoot(); } public void selectionChanged(SelectionChangedEvent event) { IStructuredSelection sel = (IStructuredSelection) event.getSelection(); updateSelectionDependentActions(sel); if (sel.isEmpty()) return; else { Iterator<?> it = sel.iterator(); List<Object> selected = new ArrayList<Object>(); while (it.hasNext()) { Object o = it.next(); if (o instanceof EditPart) { EditPart part = (EditPart) o; cmProvider.setSelectedEditPart(part); if (part instanceof MoveableLabelEditPart) { part = part.getParent(); } Object model = part.getModel(); if (model instanceof TypeNode) { TypeNode node = (TypeNode) model; selected.add(node.getTopicType()); } else if (model instanceof AssociationNode) { AssociationNode node = (AssociationNode) model; selected.add(node.getAssociationConstraint()); } else if (model instanceof Edge) { Edge edge = (Edge) model; EObject tmp = edge.getRoleConstraint(); if (tmp != null) selected.add(tmp); else { tmp = ((TypeNode) edge.getSource()).getTopicType(); selected.add(tmp); } } else { selected.add(model); } } } currentSelection = new StructuredSelection(selected); fireSelectionChanged(); } } @SuppressWarnings("unchecked") private void updateSelectionDependentActions(IStructuredSelection selelection) { Iterator<Action> it = getActionRegistry().getActions(); while (it.hasNext()) { Object o = it.next(); if (o instanceof AbstractSelectionAction) { ((AbstractSelectionAction) o).setSelections(selelection); } } } public void addSelectionChangedListener(ISelectionChangedListener listener) { // noop register to the IOnotoaSelectionService } public ISelection getSelection() { return (currentSelection == null) ? new StructuredSelection() : currentSelection; } /** * Redraws the diagram. */ public void refresh() { getGraphicalViewer().getControl().redraw(); } public void removeSelectionChangedListener(ISelectionChangedListener listener) { // noop register to the IOnotoaSelectionService } public void setSelection(ISelection selection) { // currentSelection = selection; } /** * {@inheritDoc} */ @Override public void setFocus() { super.setFocus(); fireSelectionChanged(); } private void fireSelectionChanged() { if (currentSelection == null) { TMCLEditorInput ei = (TMCLEditorInput) getEditorInput(); currentSelection = new StructuredSelection(ei.getDiagram()); } DiagramActivator.getDefault().getOnotoaSelectionService().setSelection(currentSelection, this); } public IFigure getPrintableFigure() { return getRootEditPart().getLayer(LayerConstants.PRINTABLE_LAYERS); } @SuppressWarnings("unchecked") @Override protected void updateActions(List actionIds) { super.updateActions(actionIds); } private final class DiagramMouseListener extends MouseAdapter { private boolean marquee = false; private MarqueeToolEntry met; public DiagramMouseListener() { init(); } private void init() { PaletteGroup toolsGroup = (PaletteGroup) getEditDomain().getPaletteViewer().getPaletteRoot() .getChildren().get(0); met = (MarqueeToolEntry) toolsGroup.getChildren().get(1); } @Override public void mouseDoubleClick(MouseEvent e) { try { getEditorSite().getPage().showView("de.topicmapslab.tmcledit.extensions.views.PropertyDetailView", null, IWorkbenchPage.VIEW_VISIBLE); fireSelectionChanged(); } catch (PartInitException e1) { } } @Override public void mouseUp(MouseEvent e) { if (marquee) { if ((getEditDomain().getActiveTool() == null) || (getEditDomain().getActiveTool().getClass() != SelectionTool.class)) { getEditDomain().getPaletteViewer().setActiveTool(null); cmProvider.setActive(false); } else { cmProvider.setActive(true); } marquee = false; } } @Override public void mouseDown(MouseEvent e) { if ((e.button == 3)) { if ((getEditDomain().getActiveTool() == null) || (getEditDomain().getActiveTool().getClass() != SelectionTool.class)) { getEditDomain().getPaletteViewer().setActiveTool(null); cmProvider.setActive(false); } else { cmProvider.setActive(true); } } if (e.button == 1) { if ((getEditDomain().getActiveTool() == null) || (getEditDomain().getActiveTool().getClass() == SelectionTool.class)) { if (currentSelection.isEmpty()) return; if (((IStructuredSelection) currentSelection).getFirstElement() instanceof Diagram) { getEditDomain().getPaletteViewer().setActiveTool(met); Tool tool = getEditDomain().getActiveTool(); tool.mouseDown(e, getGraphicalViewer()); marquee = true; } } } } } private class DirtyAdapter extends AdapterImpl { @Override public void notifyChanged(Notification msg) { if (msg.getNotifier() instanceof File) { if (msg.getFeatureID(Boolean.class) == ModelPackage.FILE__DIRTY) { firePropertyChange(TMCLDiagramEditor.PROP_DIRTY); getCommandStack().markSaveLocation(); } else if (msg.getFeatureID(List.class) == ModelPackage.FILE__DIAGRAMS) { if (msg.getEventType() == Notification.REMOVE) { if (msg.getOldValue().equals(getDiagram())) { getEditorSite().getPage().closeEditor(TMCLDiagramEditor.this, false); } } } } else if (msg.getNotifier().equals(diagram)) { if (msg.getFeatureID(String.class) == ModelPackage.DIAGRAM__NAME) { setPartName((String) msg.getNewValue()); firePropertyChange(IEditorPart.PROP_TITLE); } } } } }