Java tutorial
/******************************************************************************* * <copyright> * This file is part of the Extensible Coordination Tools (ECT). * Copyright (c) 2013 ECT developers. * 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 * </copyright> *******************************************************************************/ package org.ect.reo.diagram.part; import java.util.ArrayList; import java.util.List; import org.eclipse.core.commands.ExecutionException; import org.eclipse.core.resources.IFile; import org.eclipse.core.resources.IMarker; import org.eclipse.core.resources.IWorkspaceRoot; import org.eclipse.core.resources.ResourcesPlugin; import org.eclipse.core.runtime.CoreException; import org.eclipse.core.runtime.IAdaptable; import org.eclipse.core.runtime.IPath; import org.eclipse.core.runtime.IProgressMonitor; import org.eclipse.core.runtime.IStatus; import org.eclipse.core.runtime.NullProgressMonitor; import org.eclipse.emf.common.ui.URIEditorInput; import org.eclipse.emf.transaction.TransactionalEditingDomain; import org.eclipse.emf.workspace.util.WorkspaceSynchronizer; import org.eclipse.gef.palette.PaletteRoot; import org.eclipse.gmf.runtime.common.core.command.CommandResult; import org.eclipse.gmf.runtime.common.ui.services.marker.MarkerNavigationService; import org.eclipse.gmf.runtime.diagram.core.preferences.PreferencesHint; import org.eclipse.gmf.runtime.diagram.ui.actions.ActionIds; import org.eclipse.gmf.runtime.diagram.ui.editparts.IGraphicalEditPart; import org.eclipse.gmf.runtime.diagram.ui.parts.IDiagramGraphicalViewer; import org.eclipse.gmf.runtime.diagram.ui.resources.editor.document.IDiagramDocument; import org.eclipse.gmf.runtime.diagram.ui.resources.editor.document.IDocument; import org.eclipse.gmf.runtime.diagram.ui.resources.editor.document.IDocumentProvider; import org.eclipse.gmf.runtime.diagram.ui.resources.editor.parts.DiagramDocumentEditor; import org.eclipse.gmf.runtime.emf.commands.core.command.AbstractTransactionalCommand; import org.eclipse.gmf.runtime.notation.Diagram; import org.eclipse.gmf.runtime.notation.View; import org.eclipse.jface.dialogs.ErrorDialog; import org.eclipse.jface.dialogs.IMessageProvider; import org.eclipse.jface.dialogs.MessageDialog; import org.eclipse.jface.viewers.ISelection; import org.eclipse.jface.viewers.StructuredSelection; import org.eclipse.jface.window.Window; import org.eclipse.osgi.util.NLS; import org.eclipse.swt.widgets.Shell; import org.eclipse.ui.IEditorInput; import org.eclipse.ui.IEditorMatchingStrategy; import org.eclipse.ui.IEditorReference; import org.eclipse.ui.IFileEditorInput; import org.eclipse.ui.PlatformUI; import org.eclipse.ui.dialogs.SaveAsDialog; import org.eclipse.ui.ide.IGotoMarker; import org.eclipse.ui.navigator.resources.ProjectExplorer; import org.eclipse.ui.part.FileEditorInput; import org.eclipse.ui.part.IShowInTargetList; import org.eclipse.ui.part.ShowInContext; import org.ect.reo.Component; import org.ect.reo.Connector; import org.ect.reo.Module; import org.ect.reo.Network; import org.ect.reo.diagram.navigator.ReoNavigatorItem; import org.ect.reo.diagram.providers.ReoDropTargetListener; import org.ect.reo.diagram.view.util.CreateMissingViewsCommand; import org.ect.reo.diagram.view.util.ReoViewFinder; import org.ect.reo.diagram.view.util.UpgradeViewsCommand; import org.ect.reo.reconf.ReoReconfRegistry; /** * @generated */ public class ReoDiagramEditor extends DiagramDocumentEditor implements IGotoMarker { /** * @generated */ public static final String ID = "org.ect.reo.diagram.part.ReoDiagramEditorID"; //$NON-NLS-1$ /** * @generated */ public static final String CONTEXT_ID = "org.ect.reo.diagram.ui.diagramContext"; //$NON-NLS-1$ /** * @generated */ public ReoDiagramEditor() { super(true); } /** * @generated */ @Override protected String getContextID() { return CONTEXT_ID; } /** * @generated */ @Override protected PaletteRoot createPaletteRoot(PaletteRoot existingPaletteRoot) { PaletteRoot root = super.createPaletteRoot(existingPaletteRoot); new ReoPaletteFactory().fillPalette(root); return root; } /** * @generated */ @Override protected void setDocumentProvider(IEditorInput input) { if (input instanceof IFileEditorInput || input instanceof URIEditorInput) { setDocumentProvider(ReoDiagramEditorPlugin.getInstance().getDocumentProvider()); } else { super.setDocumentProvider(input); } } /** * @generated */ public void gotoMarker(IMarker marker) { MarkerNavigationService.getInstance().gotoMarker(this, marker); } /** * @generated NOT */ @Override public boolean isSaveAsAllowed() { return false; } /** * @generated */ @Override public void doSaveAs() { performSaveAs(new NullProgressMonitor()); } /** * @generated */ @Override protected void performSaveAs(IProgressMonitor progressMonitor) { Shell shell = getSite().getShell(); IEditorInput input = getEditorInput(); SaveAsDialog dialog = new SaveAsDialog(shell); IFile original = input instanceof IFileEditorInput ? ((IFileEditorInput) input).getFile() : null; if (original != null) { dialog.setOriginalFile(original); } dialog.create(); IDocumentProvider provider = getDocumentProvider(); if (provider == null) { // editor has been programmatically closed while the dialog was open return; } if (provider.isDeleted(input) && original != null) { String message = NLS.bind(Messages.ReoDiagramEditor_SavingDeletedFile, original.getName()); dialog.setErrorMessage(null); dialog.setMessage(message, IMessageProvider.WARNING); } if (dialog.open() == Window.CANCEL) { if (progressMonitor != null) { progressMonitor.setCanceled(true); } return; } IPath filePath = dialog.getResult(); if (filePath == null) { if (progressMonitor != null) { progressMonitor.setCanceled(true); } return; } IWorkspaceRoot workspaceRoot = ResourcesPlugin.getWorkspace().getRoot(); IFile file = workspaceRoot.getFile(filePath); final IEditorInput newInput = new FileEditorInput(file); // Check if the editor is already open IEditorMatchingStrategy matchingStrategy = getEditorDescriptor().getEditorMatchingStrategy(); IEditorReference[] editorRefs = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage() .getEditorReferences(); for (int i = 0; i < editorRefs.length; i++) { if (matchingStrategy.matches(editorRefs[i], newInput)) { MessageDialog.openWarning(shell, Messages.ReoDiagramEditor_SaveAsErrorTitle, Messages.ReoDiagramEditor_SaveAsErrorMessage); return; } } boolean success = false; try { provider.aboutToChange(newInput); getDocumentProvider(newInput).saveDocument(progressMonitor, newInput, getDocumentProvider().getDocument(getEditorInput()), true); success = true; } catch (CoreException x) { IStatus status = x.getStatus(); if (status == null || status.getSeverity() != IStatus.CANCEL) { ErrorDialog.openError(shell, Messages.ReoDiagramEditor_SaveErrorTitle, Messages.ReoDiagramEditor_SaveErrorMessage, x.getStatus()); } } finally { provider.changed(newInput); if (success) { setInput(newInput); } } if (progressMonitor != null) { progressMonitor.setCanceled(!success); } } /** * @generated */ @Override public ShowInContext getShowInContext() { return new ShowInContext(getEditorInput(), getNavigatorSelection()); } /** * @generated */ private ISelection getNavigatorSelection() { IDiagramDocument document = getDiagramDocument(); if (document == null) { return StructuredSelection.EMPTY; } Diagram diagram = document.getDiagram(); IFile file = WorkspaceSynchronizer.getFile(diagram.eResource()); if (file != null) { ReoNavigatorItem item = new ReoNavigatorItem(diagram, file, false); return new StructuredSelection(item); } return StructuredSelection.EMPTY; } /** * @generated */ protected void configureGraphicalViewer() { super.configureGraphicalViewer(); DiagramEditorContextMenuProvider provider = new DiagramEditorContextMenuProvider(this, getDiagramGraphicalViewer()); getDiagramGraphicalViewer().setContextMenu(provider); getSite().registerContextMenu(ActionIds.DIAGRAM_EDITOR_CONTEXT_MENU, provider, getDiagramGraphicalViewer()); } /** * @generated */ @Override protected PreferencesHint getPreferencesHint() { return ReoDiagramEditorPlugin.DIAGRAM_PREFERENCES_HINT; } /** * @generated */ @Override public String getContributorId() { return ReoDiagramEditorPlugin.ID; } /** * @generated */ @SuppressWarnings("rawtypes") @Override public Object getAdapter(Class type) { if (type == IShowInTargetList.class) { return new IShowInTargetList() { public String[] getShowInTargetIds() { return new String[] { ProjectExplorer.VIEW_ID }; } }; } return super.getAdapter(type); } /** * @generated */ @Override protected IDocumentProvider getDocumentProvider(IEditorInput input) { if (input instanceof IFileEditorInput || input instanceof URIEditorInput) { return ReoDiagramEditorPlugin.getInstance().getDocumentProvider(); } return super.getDocumentProvider(input); } /** * @generated */ @Override public TransactionalEditingDomain getEditingDomain() { IDocument document = getEditorInput() != null ? getDocumentProvider().getDocument(getEditorInput()) : null; if (document instanceof IDiagramDocument) { return ((IDiagramDocument) document).getEditingDomain(); } return super.getEditingDomain(); } /** * @generated NOT */ @Override protected void initializeGraphicalViewer() { // Check for Model upgrades. performUpgrades(); // Initialize viewer. super.initializeGraphicalViewer(); // Add DropTargetListener. ReoDropTargetListener listener = new ReoDropTargetListener(getGraphicalViewer(), getEditingDomain()); getGraphicalViewer().addDropTargetListener(listener); // Register reconfiguration rules. Module module = (Module) getDiagram().getElement(); ReoReconfRegistry.INSTANCE.addRules(module); } /** * @generated NOT */ public void dispose() { // Unregister reconfiguration rules. Module module = (Module) getDiagram().getElement(); ReoReconfRegistry.INSTANCE.removeRules(module); super.dispose(); } /** * Check for upgrades and apply them if necessary. * @generated NOT */ private void performUpgrades() { // Create a new upgrade command. Module module = (Module) getDiagram().getElement(); UpgradeViewsCommand upgrade = new UpgradeViewsCommand(getEditingDomain(), getDiagram(), null); CreateMissingViewsCommand missing = new CreateMissingViewsCommand(getEditingDomain(), module, null); // Check whether we can execute it. if (missing.shouldExecute() || upgrade.canExecute()) { // Execute the commands. try { missing.execute(new NullProgressMonitor(), null); upgrade.execute(new NullProgressMonitor(), null); ReoDiagramEditorPlugin.getInstance().logInfo("Graphical model in " + getTitle() + " upgraded."); } catch (ExecutionException e) { ReoDiagramEditorPlugin.getInstance().logError("Error upgrading views in " + getTitle() + ".", e); } } } /** * Select the connectors and components of a network in this editor. * @param network Network. * @generated NOT */ public void selectNetwork(Network network) { final IDiagramGraphicalViewer viewer = getDiagramGraphicalViewer(); final List<IGraphicalEditPart> editparts = new ArrayList<IGraphicalEditPart>(); for (Connector connector : network.getConnectors()) { View view = ReoViewFinder.findConnectorView(connector, getDiagram()); if (view == null) continue; IGraphicalEditPart editpart = (IGraphicalEditPart) viewer.getEditPartRegistry().get(view); if (editpart != null) editparts.add(editpart); } for (Component component : network.getComponents()) { View view = ReoViewFinder.findComponentView(component, getDiagram()); if (view == null) continue; IGraphicalEditPart editpart = (IGraphicalEditPart) viewer.getEditPartRegistry().get(view); if (editpart != null) editparts.add(editpart); } if (!editparts.isEmpty()) { getSite().getShell().getDisplay().asyncExec(new Runnable() { public void run() { viewer.setSelection(new StructuredSelection(editparts)); } }); } } }