Java tutorial
/*************************************************************************** * Copyright (c) 2008 Conselleria de Infraestructuras y Transporte, * Generalitat de la Comunitat Valenciana . 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: Mario Cervera Ubeda (Integranova) * ******************************************************************************/ package es.cv.gvcase.mdt.db.diagram.part; import java.util.ArrayList; import java.util.Arrays; import java.util.Collection; import java.util.HashSet; import java.util.Iterator; import java.util.List; 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.datatools.modelbase.sql.accesscontrol.SQLAccessControlPackage; import org.eclipse.datatools.modelbase.sql.constraints.SQLConstraintsPackage; import org.eclipse.datatools.modelbase.sql.datatypes.SQLDataTypesPackage; import org.eclipse.datatools.modelbase.sql.expressions.SQLExpressionsPackage; import org.eclipse.datatools.modelbase.sql.routines.SQLRoutinesPackage; import org.eclipse.datatools.modelbase.sql.schema.SQLSchemaPackage; import org.eclipse.datatools.modelbase.sql.statements.SQLStatementsPackage; import org.eclipse.datatools.modelbase.sql.tables.SQLTablesPackage; import org.eclipse.emf.common.ui.URIEditorInput; import org.eclipse.emf.ecore.EObject; import org.eclipse.emf.ecore.resource.Resource; import org.eclipse.emf.edit.ui.dnd.LocalTransfer; import org.eclipse.emf.transaction.TransactionalEditingDomain; import org.eclipse.emf.workspace.util.WorkspaceSynchronizer; import org.eclipse.gef.EditPartViewer; import org.eclipse.gef.palette.PaletteRoot; 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.parts.DiagramDropTargetListener; 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.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.util.LocalSelectionTransfer; import org.eclipse.jface.viewers.ISelection; import org.eclipse.jface.viewers.IStructuredSelection; import org.eclipse.jface.viewers.StructuredSelection; import org.eclipse.jface.window.Window; import org.eclipse.osgi.util.NLS; import org.eclipse.swt.dnd.Transfer; import org.eclipse.swt.dnd.TransferData; import org.eclipse.swt.widgets.Shell; import org.eclipse.ui.IEditorActionBarContributor; 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 es.cv.gvcase.mdt.common.part.CachedResourcesDiagramEditor; import es.cv.gvcase.mdt.common.storage.store.EditorStorageApplicable; import es.cv.gvcase.mdt.common.storage.store.IStorageApplicable; import es.cv.gvcase.mdt.db.diagram.navigator.SqlmodelNavigatorItem; /** * @generated */ public class SqlmodelDiagramEditor extends CachedResourcesDiagramEditor implements IGotoMarker { // good /** * @generated */ public static final String ID = "es.cv.gvcase.mdt.db.diagram.part.SqlmodelDiagramEditorID"; //$NON-NLS-1$ /** * @generated */ public static final String CONTEXT_ID = "es.cv.gvcase.mdt.db.diagram.ui.diagramContext"; //$NON-NLS-1$ /** * @generated */ public SqlmodelDiagramEditor() { super(true); } /** * @generated */ protected String getContextID() { return CONTEXT_ID; } /** * @generated */ public String getEditingDomainID() { return "es.cv.gvcase.mdt.db.diagram.EditingDomain"; } /** * @generated */ protected PaletteRoot createPaletteRoot(PaletteRoot existingPaletteRoot) { PaletteRoot root = super.createPaletteRoot(existingPaletteRoot); new SqlmodelPaletteFactory().fillPalette(root); return root; } /** * @generated */ protected PreferencesHint getPreferencesHint() { return SqlmodelDiagramEditorPlugin.DIAGRAM_PREFERENCES_HINT; } /** * @generated */ @Override public String getEditorID() { return ID; } /** * @generated NOT ; modified to return the correct ContributorID */ public String getContributorId() { // return SqlmodelDiagramEditorPlugin.ID; return "es.cv.gvcase.mdt.db.properties"; } /** * @generated NOT ; added EditorStorageApplicable */ public Object getAdapter(Class type) { if (type == IShowInTargetList.class) { return new IShowInTargetList() { public String[] getShowInTargetIds() { return new String[] { ProjectExplorer.VIEW_ID }; } }; } if (IEditorActionBarContributor.class.equals(type)) { return new SqlmodelDiagramActionBarContributor(); } if (IStorageApplicable.class.equals(type)) { return new EditorStorageApplicable(Arrays.asList(new String[] { SQLSchemaPackage.eNS_URI, SQLAccessControlPackage.eNS_URI, SQLConstraintsPackage.eNS_URI, SQLDataTypesPackage.eNS_URI, SQLExpressionsPackage.eNS_URI, SQLRoutinesPackage.eNS_URI, SQLTablesPackage.eNS_URI, SQLStatementsPackage.eNS_URI })); } return super.getAdapter(type); } /** * @generated */ protected IDocumentProvider getDocumentProvider(IEditorInput input) { if (input instanceof IFileEditorInput || input instanceof URIEditorInput) { return SqlmodelDiagramEditorPlugin.getInstance().getDocumentProvider(getEditingDomainID(), input); } return super.getDocumentProvider(input); } /** * @generated */ public TransactionalEditingDomain getEditingDomain() { IDocument document = getEditorInput() != null ? getDocumentProvider().getDocument(getEditorInput()) : null; if (document instanceof IDiagramDocument) { return ((IDiagramDocument) document).getEditingDomain(); } return super.getEditingDomain(); } /** * @generated */ protected void setDocumentProvider(IEditorInput input) { if (input instanceof IFileEditorInput || input instanceof URIEditorInput) { setDocumentProvider( SqlmodelDiagramEditorPlugin.getInstance().getDocumentProvider(getEditingDomainID(), input)); } else { super.setDocumentProvider(input); } } /** * @generated */ public void gotoMarker(IMarker marker) { MarkerNavigationService.getInstance().gotoMarker(this, marker); } /** * @generated */ public boolean isSaveAsAllowed() { return true; } /** * @generated */ public void doSaveAs() { performSaveAs(new NullProgressMonitor()); } /** * @generated */ 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.SqlmodelDiagramEditor_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.SqlmodelDiagramEditor_SaveAsErrorTitle, Messages.SqlmodelDiagramEditor_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.SqlmodelDiagramEditor_SaveErrorTitle, Messages.SqlmodelDiagramEditor_SaveErrorMessage, x.getStatus()); } } finally { provider.changed(newInput); if (success) { setInput(newInput); } } if (progressMonitor != null) { progressMonitor.setCanceled(!success); } } /** * @generated */ 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) { SqlmodelNavigatorItem item = new SqlmodelNavigatorItem(diagram, file, false); return new StructuredSelection(item); } return StructuredSelection.EMPTY; } /** * @generated */ protected void initializeGraphicalViewer() { super.initializeGraphicalViewer(); getDiagramGraphicalViewer().addDropTargetListener( new DropTargetListener(getDiagramGraphicalViewer(), LocalSelectionTransfer.getTransfer()) { protected Object getJavaObject(TransferData data) { System.out.println("Drop: " + data); return LocalSelectionTransfer.getTransfer().nativeToJava(data); } }); getDiagramGraphicalViewer().addDropTargetListener( new DropTargetListener(getDiagramGraphicalViewer(), LocalTransfer.getInstance()) { protected Object getJavaObject(TransferData data) { System.out.println("Drop: " + data); return LocalTransfer.getInstance().nativeToJava(data); } }); } /** * @generated */ private abstract class DropTargetListener extends DiagramDropTargetListener { /** * @generated */ public DropTargetListener(EditPartViewer viewer, Transfer xfer) { super(viewer, xfer); } /** * @generated */ protected List getObjectsBeingDropped() { TransferData data = getCurrentEvent().currentDataType; Collection uris = new HashSet(); List result = new ArrayList(); Object transferedObject = getJavaObject(data); if (transferedObject instanceof IStructuredSelection) { IStructuredSelection selection = (IStructuredSelection) transferedObject; for (Iterator it = selection.iterator(); it.hasNext();) { Object nextSelectedObject = it.next(); if (nextSelectedObject instanceof SqlmodelNavigatorItem) { View view = ((SqlmodelNavigatorItem) nextSelectedObject).getView(); nextSelectedObject = view.getElement(); } else if (nextSelectedObject instanceof IAdaptable) { IAdaptable adaptable = (IAdaptable) nextSelectedObject; nextSelectedObject = adaptable.getAdapter(EObject.class); } if (nextSelectedObject instanceof EObject) { EObject modelElement = (EObject) nextSelectedObject; Resource modelElementResource = modelElement.eResource(); uris.add(modelElementResource.getURI() .appendFragment(modelElementResource.getURIFragment(modelElement))); } if (nextSelectedObject instanceof EObject) { result.add(nextSelectedObject); } } } return result; } /** * @generated */ protected abstract Object getJavaObject(TransferData data); } }