ac.soton.eventb.classdiagrams.diagram.navigator.ClassdiagramsNavigatorLinkHelper.java Source code

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Here is the source code for ac.soton.eventb.classdiagrams.diagram.navigator.ClassdiagramsNavigatorLinkHelper.java

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/*
 * Copyright (c) 2012 University of Southampton.
 * 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
 */
package ac.soton.eventb.classdiagrams.diagram.navigator;

import org.eclipse.core.resources.IFile;
import org.eclipse.core.runtime.IAdaptable;
import org.eclipse.emf.common.ui.URIEditorInput;
import org.eclipse.emf.common.util.URI;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.resource.Resource;
import org.eclipse.emf.ecore.resource.ResourceSet;
import org.eclipse.emf.ecore.util.EcoreUtil;
import org.eclipse.emf.workspace.util.WorkspaceSynchronizer;
import org.eclipse.gef.EditPart;
import org.eclipse.gef.GraphicalViewer;
import org.eclipse.gmf.runtime.diagram.ui.parts.DiagramEditor;
import org.eclipse.gmf.runtime.diagram.ui.resources.editor.document.IDiagramDocument;
import org.eclipse.gmf.runtime.notation.Diagram;
import org.eclipse.gmf.runtime.notation.View;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.StructuredSelection;
import org.eclipse.ui.IEditorInput;
import org.eclipse.ui.IEditorPart;
import org.eclipse.ui.IWorkbenchPage;
import org.eclipse.ui.navigator.ILinkHelper;
import org.eclipse.ui.part.FileEditorInput;

import ac.soton.eventb.classdiagrams.diagram.part.ClassdiagramsDiagramEditorPlugin;

/**
 * @generated
 */
public class ClassdiagramsNavigatorLinkHelper implements ILinkHelper {

    /**
     * @generated
     */
    private static IEditorInput getEditorInput(Diagram diagram) {
        Resource diagramResource = diagram.eResource();
        for (EObject nextEObject : diagramResource.getContents()) {
            if (nextEObject == diagram) {
                return new FileEditorInput(WorkspaceSynchronizer.getFile(diagramResource));
            }
            if (nextEObject instanceof Diagram) {
                break;
            }
        }
        URI uri = EcoreUtil.getURI(diagram);
        String editorName = uri.lastSegment() + '#' + diagram.eResource().getContents().indexOf(diagram);
        IEditorInput editorInput = new URIEditorInput(uri, editorName);
        return editorInput;
    }

    /**
     * @generated
     */
    public IStructuredSelection findSelection(IEditorInput anInput) {
        IDiagramDocument document = ClassdiagramsDiagramEditorPlugin.getInstance().getDocumentProvider()
                .getDiagramDocument(anInput);
        if (document == null) {
            return StructuredSelection.EMPTY;
        }
        Diagram diagram = document.getDiagram();
        if (diagram == null || diagram.eResource() == null) {
            return StructuredSelection.EMPTY;
        }
        IFile file = WorkspaceSynchronizer.getFile(diagram.eResource());
        if (file != null) {
            ClassdiagramsNavigatorItem item = new ClassdiagramsNavigatorItem(diagram, file, false);
            return new StructuredSelection(item);
        }
        return StructuredSelection.EMPTY;
    }

    /**
     * @generated
     */
    public void activateEditor(IWorkbenchPage aPage, IStructuredSelection aSelection) {
        if (aSelection == null || aSelection.isEmpty()) {
            return;
        }
        if (false == aSelection.getFirstElement() instanceof ClassdiagramsAbstractNavigatorItem) {
            return;
        }

        ClassdiagramsAbstractNavigatorItem abstractNavigatorItem = (ClassdiagramsAbstractNavigatorItem) aSelection
                .getFirstElement();
        View navigatorView = null;
        if (abstractNavigatorItem instanceof ClassdiagramsNavigatorItem) {
            navigatorView = ((ClassdiagramsNavigatorItem) abstractNavigatorItem).getView();
        } else if (abstractNavigatorItem instanceof ClassdiagramsNavigatorGroup) {
            ClassdiagramsNavigatorGroup navigatorGroup = (ClassdiagramsNavigatorGroup) abstractNavigatorItem;
            if (navigatorGroup.getParent() instanceof ClassdiagramsNavigatorItem) {
                navigatorView = ((ClassdiagramsNavigatorItem) navigatorGroup.getParent()).getView();
            } else if (navigatorGroup.getParent() instanceof IAdaptable) {
                navigatorView = (View) ((IAdaptable) navigatorGroup.getParent()).getAdapter(View.class);
            }
        }
        if (navigatorView == null) {
            return;
        }
        IEditorInput editorInput = getEditorInput(navigatorView.getDiagram());
        IEditorPart editor = aPage.findEditor(editorInput);
        if (editor == null) {
            return;
        }
        aPage.bringToTop(editor);
        if (editor instanceof DiagramEditor) {
            DiagramEditor diagramEditor = (DiagramEditor) editor;
            ResourceSet diagramEditorResourceSet = diagramEditor.getEditingDomain().getResourceSet();
            EObject selectedView = diagramEditorResourceSet.getEObject(EcoreUtil.getURI(navigatorView), true);
            if (selectedView == null) {
                return;
            }
            GraphicalViewer graphicalViewer = (GraphicalViewer) diagramEditor.getAdapter(GraphicalViewer.class);
            EditPart selectedEditPart = (EditPart) graphicalViewer.getEditPartRegistry().get(selectedView);
            if (selectedEditPart != null) {
                graphicalViewer.select(selectedEditPart);
            }
        }
    }

}