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/*****************************************************************************
* Copyright (c) 2014 Jonathan Geoffroy.
*
*
* 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:
* Jonathan Geoffroy geoffroy.jonathan@gmail.com initial implementation
*
*****************************************************************************/
package org.eclipse.papyrus.java.reverse.ui;
import java.util.Iterator;
import java.util.List;
import java.util.ListIterator;
import java.util.TreeSet;
import org.eclipse.emf.common.util.EList;
import org.eclipse.emf.common.util.TreeIterator;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.gmf.runtime.notation.Diagram;
import org.eclipse.gmf.runtime.notation.impl.ShapeImpl;
import org.eclipse.jdt.core.ICompilationUnit;
import org.eclipse.jdt.core.IJavaElement;
import org.eclipse.jdt.core.JavaModelException;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.TreeSelection;
import org.eclipse.papyrus.infra.core.services.ServiceException;
import org.eclipse.papyrus.infra.ui.editor.IMultiDiagramEditor;
import org.eclipse.papyrus.java.reverse.ui.dialog.DndReverseCodeDialog;
import org.eclipse.papyrus.java.reverse.ui.dialog.ReverseCodeDialog;
import org.eclipse.papyrus.uml.diagram.common.util.MDTUtil;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.ui.IEditorPart;
import org.eclipse.ui.IWorkbenchPage;
import org.eclipse.ui.PlatformUI;
import org.eclipse.uml2.uml.Model;
import org.eclipse.uml2.uml.NamedElement;
/**
* Handler to display reverse result into current papyrus diagram
* This Handler is activated when user drag'n'drop java resource into papyrus diagram.<br>
* It display just non displayed java resource.
* Moreover, it use DndReverseCodeDialog to know if it have to display model, packages and CompilationUnit or not.
*
* @author Jonathan Geoffroy
*
*/
public class DndReverseCodeHandler extends ReverseCodeHandler {
/**
* true if and only if user want to display reversed compilation unit
*/
private boolean displayCU;
/**
* true if and only if user want to display reversed packages
*/
private boolean displayPackages;
/**
* true if and only if user want to display reversed model
*/
private boolean displayModel;
@Override
/**
* Find all resource to display (selection - resources which are already in the diagram), run the reverse command, before running the display command<br/>
* @see org.eclipse.papyrus.java.reverse.ui.ReverseCodeHandler#doExecute(org.eclipse.papyrus.java.reverse.ui.dialog.ReverseCodeDialog)
*
* @param dialog
*/
protected void doExecute(ReverseCodeDialog dialog) {
// Get user preferences on dialog
DndReverseCodeDialog dndDialog = (DndReverseCodeDialog) dialog;
displayModel = dndDialog.displayModel();
displayPackages = dndDialog.displayPackages();
displayCU = dndDialog.displayCU();
// get current selection
IWorkbenchPage page = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage();
ISelection selection = page.getSelection();
TreeSelection treeSelection = (TreeSelection) selection;
// Find active papyrus diagram
Diagram diagram = null;
IEditorPart activeEditor = MDTUtil.getActiveEditor();
if (activeEditor != null) {
if (activeEditor instanceof IMultiDiagramEditor) {
diagram = (Diagram) ((IMultiDiagramEditor) activeEditor).getAdapter(Diagram.class);
}
}
// Remove items already in diagram from selection
List<IJavaElement> listSelection;
try {
listSelection = selectionMinusAlreadyInDiagram(treeSelection, diagram);
} catch (JavaModelException e1) {
e1.printStackTrace();
return;
}
// Run the reverse
super.doExecute(dialog);
try {
// Find model to display
Model model = null;
if (displayModel) {
String modelName = dndDialog.getValue();
model = getModelToDisplay(diagram, modelName);
}
// Run the reverse displayer
DisplayReverse displayReverse = new DisplayReverse(listSelection, diagram, getUmlResource(), model);
displayReverse.execute();
} catch (JavaModelException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (ServiceException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
@Override
protected ReverseCodeDialog getDialog(Shell shell, String modelUid) {
return new DndReverseCodeDialog(shell, modelUid, getSelectedProjectName(), null);
}
/**
*
* @param selection
* java resources selected
* @param diagram
* opened papyrus diagram
* @return selection - resources already in diagram
* @throws JavaModelException
*/
private List<IJavaElement> selectionMinusAlreadyInDiagram(TreeSelection selection, Diagram diagram) throws JavaModelException {
// Add all diagram elements to Set
TreeSet<String> alreadyExists = new TreeSet<String>();
EList diagramList = diagram.getChildren();
Iterator diagramIt = diagramList.iterator();
ShapeImpl item;
NamedElement e;
while (diagramIt.hasNext()) {
item = (ShapeImpl) diagramIt.next();
e = (NamedElement) (item.getElement());
alreadyExists.add(e.getName());
}
// remove all elements of Set from selection
TreeSelectionList selectionList = new TreeSelectionList(selection, displayPackages, displayCU);
ListIterator<IJavaElement> selectionIterator = selectionList.listIterator();
String selectionItemName;
while (selectionIterator.hasNext()) {
selectionItemName = getName(selectionIterator.next());
if (selectionItemName != null && alreadyExists.contains(selectionItemName)) {
selectionIterator.remove();
}
}
return selectionList;
}
/**
* Find the name of <code>item</code> For java compilation unit, remove ".java" extension
*
* @param item
* @return the name of item.
*/
private String getName(IJavaElement item) {
String name = item.getElementName();
if (item instanceof ICompilationUnit) {
return name.substring(0, name.length() - 5);
}
return name;
}
/**
* find a model named <code>modelName</code>
*
* @param modelName
* the name of the model the find
* @return the model which named <code>modelName</code>, or null if it doesn't exists into the current papyrus uml resource
* @throws ServiceException
*/
public Model getModel(String modelName) throws ServiceException {
TreeIterator<EObject> tree = getUmlResource().getAllContents();
while (tree.hasNext()) {
for (EObject o : tree.next().eContents()) {
if (o instanceof Model) {
// Add it into items to display
Model model = (Model) o;
// Search for model
if (model.getName().equals(modelName)) {
System.out.println("model = " + model);
return model;
}
}
}
}
System.out.println("model = null");
return null;
}
/**
* find the model named <code>modelName</code>, and get it only if it has to be displayed
*
* @param diagram
* active papyrus diagram
* @param modelName
* the name of the model to find
* @return model corresponding to the modelName if it has to be displayed, i.e. if it doesn't already displayed into the diagram, or null
* otherwise
* @throws ServiceException
*/
private Model getModelToDisplay(Diagram diagram, String modelName) throws ServiceException {
Model model = getModel(modelName);
if (model != null && !isInDiagram(diagram, model)) {
System.out.println("display model " + model);
return model;
}
System.out.println("don't display model");
return null;
}
/**
*
* @param diagram
* @param model
* @return true if model is in diagram
*/
private boolean isInDiagram(Diagram diagram, Model model) {
EList diagramList = diagram.getChildren();
Iterator diagramIt = diagramList.iterator();
ShapeImpl item;
while (diagramIt.hasNext()) {
item = (ShapeImpl) diagramIt.next();
if (item.getElement() == model) {
return true;
}
}
return false;
}
}
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