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/*******************************************************************************
* Copyright (c) 2016 protos software gmbh (http://www.protos.de).
* 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:
* Juergen Haug
*
*******************************************************************************/
package org.eclipse.etrice.ui.common.base.editor;
import java.io.IOException;
import java.util.Collections;
import java.util.List;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.MultiStatus;
import org.eclipse.core.runtime.Status;
import org.eclipse.emf.common.util.Diagnostic;
import org.eclipse.emf.common.util.URI;
import org.eclipse.emf.ecore.resource.Resource;
import org.eclipse.emf.transaction.RunnableWithResult;
import org.eclipse.emf.transaction.util.TransactionUtil;
import org.eclipse.etrice.ui.common.base.UIBaseActivator;
import org.eclipse.graphiti.mm.pictograms.Diagram;
import org.eclipse.graphiti.ui.editor.DefaultPersistencyBehavior;
import org.eclipse.graphiti.ui.editor.DiagramBehavior;
import org.eclipse.jface.dialogs.ErrorDialog;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.swt.widgets.Display;
import org.eclipse.ui.IEditorPart;
import org.eclipse.xtext.diagnostics.Severity;
import org.eclipse.xtext.resource.XtextResource;
import org.eclipse.xtext.serializer.ISerializer;
import org.eclipse.xtext.util.CancelIndicator;
import org.eclipse.xtext.validation.CheckMode;
import org.eclipse.xtext.validation.IResourceValidator;
import org.eclipse.xtext.validation.Issue;
import com.google.common.collect.Lists;
import com.google.inject.Inject;
public class CustomPersistencyBehavior extends DefaultPersistencyBehavior {
private SaveOnFocusLostListener saveOnFocusListener;
public CustomPersistencyBehavior(DiagramBehavior diagramBehavior) {
super(diagramBehavior);
}
@Override
public Diagram loadDiagram(URI uri) {
saveOnFocusListener = new SaveOnFocusLostListener((IEditorPart)diagramBehavior.getDiagramContainer().getWorkbenchPart());
return super.loadDiagram(uri);
}
@Override
public void saveDiagram(IProgressMonitor monitor) {
boolean valid = validateResourcesBeforeSave(monitor);
if (valid)
super.saveDiagram(monitor);
// deactivate saveOnFocus for better usability
// avoid retrigger loop from message box
saveOnFocusListener.setActive(valid);
}
protected boolean validateResourcesBeforeSave(final IProgressMonitor monitor){
final RunnableWithResult<Boolean> runnable = new RunnableWithResult.Impl<Boolean>() {
@Override
public void run() {
setResult(false);
boolean result = true;
// copy list to avoid ConcurrentModification during serialize and validation
final List<Resource> resources = Lists.newArrayList(diagramBehavior.getEditingDomain().getResourceSet().getResources());
for(Resource res : resources){
result &= !shouldSave(res) || validateResource(res, monitor);
}
setResult(result);
}
};
try {
return TransactionUtil.runExclusive(diagramBehavior.getEditingDomain(), runnable);
}
catch (InterruptedException e) {
MessageDialog.openError(Display.getDefault().getActiveShell(), "ERROR", "Internal error: could not save model:\n\n"+e.getMessage());
UIBaseActivator.getDefault().getLog().log(new Status(Status.ERROR, UIBaseActivator.PLUGIN_ID, e.getMessage(), e));
return false;
}
}
protected boolean validateResource(Resource res, final IProgressMonitor monitor) {
IStatus resultStatus = null;
if(res instanceof XtextResource)
resultStatus = validateSyntax((XtextResource) res);
else
resultStatus = Status.OK_STATUS;
if (!resultStatus.isOK()) {
final int filterMask = IStatus.OK | IStatus.INFO | IStatus.WARNING | IStatus.ERROR;
ErrorDialog dialog = new ErrorDialog(diagramBehavior.getDiagramContainer().getSite().getShell(),
"Save", "Cannot save diagram.", resultStatus, filterMask) {
@Override
public void create() {
super.create();
showDetailsArea();
};
};
dialog.open();
}
return resultStatus.isOK();
}
protected IStatus validateSyntax(XtextResource resource) {
MultiStatus status = new MultiStatus(UIBaseActivator.PLUGIN_ID, 0, "Could not create textual representation of " + resource.getURI().lastSegment() + ".", null);
for (Diagnostic diag : resource.validateConcreteSyntax())
status.add(new Status(IStatus.ERROR, UIBaseActivator.PLUGIN_ID, diag.toString()));
try {
if(status.isOK())
resource.getSerializer().serialize(resource.getContents().get(0));
} catch(RuntimeException e){
status.add(new Status(IStatus.ERROR, UIBaseActivator.PLUGIN_ID, e.getMessage()));
}
return status;
}
//
// Old syntax + semantic validation backup
//
@Deprecated
@Inject
private IResourceValidator resourceValidator;
@Deprecated
@SuppressWarnings("unused")
private boolean validateResourceFully(Resource res, final IProgressMonitor monitor) {
if (res instanceof XtextResource) {
if (!res.isLoaded()) {
try {
res.load(Collections.EMPTY_MAP);
} catch (IOException e) {
MessageDialog.openError(Display.getDefault().getActiveShell(), "ERROR", "Internal error: couldn't load referenced resource "+res.getURI());
return false;
}
}
if (res.isModified()) {
XtextResource xres = (XtextResource) res;
ISerializer serializer = xres.getSerializer();
if (xres.getContents().isEmpty()) {
MessageDialog.openError(Display.getDefault().getActiveShell(), "ERROR", "Internal error: part of textual model is empty, can't save");
return false;
}
try {
// HOWTO: call serializer to validate the concrete syntax
// this throws an exception which is caught further up the stack
// and a dialog will be displayed
serializer.serialize(xres.getContents().get(0));
List<Issue> result = resourceValidator.validate(res, CheckMode.NORMAL_AND_FAST, new CancelIndicator() {
public boolean isCanceled() {
if(monitor == null)
return false;
return monitor.isCanceled();
}
});
if (!result.isEmpty()) {
boolean error = false;
MultiStatus ms = new MultiStatus(UIBaseActivator.PLUGIN_ID, Status.ERROR, "validation errors during diagram save", null);
for (Issue issue : result) {
if (issue.isSyntaxError() || issue.getSeverity()==Severity.ERROR) {
ms.add(new Status(Status.ERROR, UIBaseActivator.PLUGIN_ID, issue.getMessage()));
error = true;
}
}
if (error) {
StringBuilder messges = new StringBuilder();
for(IStatus status : ms.getChildren())
messges.append(status.getMessage()+"\n");
MessageDialog.openError(Display.getDefault().getActiveShell(), "ERROR", "Internal error: model is invalid, can't save:\n\n"+messges);
UIBaseActivator.getDefault().getLog().log(ms);
return false;
}
}
}
catch (RuntimeException e) {
MessageDialog.openError(Display.getDefault().getActiveShell(), "ERROR", "Internal error: model is invalid, can't save:\n\n"+e.getMessage());
UIBaseActivator.getDefault().getLog().log(new Status(Status.ERROR, UIBaseActivator.PLUGIN_ID, e.getMessage(),e));
return false;
}
}
}
return true;
}
}
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