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/**
* Copyright (c) 2017 CEA LIST.
*
* 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:
* Maged Elaasar - Initial API and implementation
*
*
*/
package org.eclipse.papyrus.infra.ui.architecture.handlers;
import java.util.Arrays;
import org.eclipse.core.commands.AbstractHandler;
import org.eclipse.core.commands.ExecutionEvent;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.emf.common.command.CompoundCommand;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.resource.ResourceSet;
import org.eclipse.emf.transaction.TransactionalEditingDomain;
import org.eclipse.jface.action.IContributionItem;
import org.eclipse.jface.dialogs.Dialog;
import org.eclipse.jface.dialogs.IDialogSettings;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.window.Window;
import org.eclipse.papyrus.infra.core.architecture.merged.MergedArchitectureContext;
import org.eclipse.papyrus.infra.architecture.ArchitectureDescriptionUtils;
import org.eclipse.papyrus.infra.architecture.ArchitectureDomainManager;
import org.eclipse.papyrus.infra.core.resource.ModelSet;
import org.eclipse.papyrus.infra.emf.utils.EMFHelper;
import org.eclipse.papyrus.infra.ui.architecture.ArchitectureUIPlugin;
import org.eclipse.papyrus.infra.ui.architecture.widgets.ArchitectureContextComposite;
import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.MessageBox;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.ui.handlers.HandlerUtil;
/**
* A command handler for changing architecture context in a model set
*
* @since 1.0
*/
public class ChangeArchitectureContextHandler extends AbstractHandler {
private final static String DIALOG_SECTION = ChangeArchitectureContextHandler.class.getName();
/**
* Constructor.
*/
public ChangeArchitectureContextHandler() {
// nothing by default
}
@Override
public Object execute(ExecutionEvent event) throws ExecutionException {
EObject selection = getSelection(event);
if (selection == null)
return new IContributionItem[0];
ResourceSet resourceSet = selection.eResource().getResourceSet();
if (!(resourceSet instanceof ModelSet))
return new IContributionItem[0];
final ArchitectureDescriptionUtils helper = new ArchitectureDescriptionUtils((ModelSet)resourceSet);
String[] contextIds = new String[] {helper.getArchitectureContextId()};
String[] viewpointIds = helper.getArchitectureViewpointIds().toArray(new String[0]);
final Shell shell = Display.getCurrent().getActiveShell();
ArchitectureContextDialog dialog = new ArchitectureContextDialog(shell);
dialog.setSelectedContexts(contextIds);
dialog.setSelectedViewpoints(viewpointIds);
dialog.create();
if (dialog.open() == Window.OK) {
TransactionalEditingDomain dom = helper.getModelSet().getTransactionalEditingDomain();
CompoundCommand cmd = new CompoundCommand("Change Architecture Context");
if (!Arrays.equals(dialog.getSelectedContextIds(), contextIds)) {
cmd.append(helper.switchArchitectureContextId(dialog.getSelectedContextIds()[0]));
}
if (!Arrays.equals(dialog.getSelectedViewpointIds(), viewpointIds)) {
cmd.append(helper.switchArchitectureViewpointIds(dialog.getSelectedViewpointIds()));
}
if (!cmd.isEmpty()) {
dom.getCommandStack().execute(cmd);
}
}
return null;
}
/**
* Gets the current selection as an EObject
*
* @return The current selection, or <code>null</code> if it is not an EObject
*/
protected EObject getSelection(ExecutionEvent event) {
Object selection = HandlerUtil.getCurrentSelection(event);
if (selection instanceof IStructuredSelection) {
IStructuredSelection struct = (IStructuredSelection) selection;
Object obj = struct.getFirstElement();
return EMFHelper.getEObject(obj);
}
return null;
}
/**
* A dialog to allow choosing a new architecture context and viewpoints
*/
private class ArchitectureContextDialog extends Dialog {
private String[] originalContextIds;
private String[] selectedContextIds;
private String[] selectedViewpointIds;
protected ArchitectureContextDialog(Shell parentShell) {
super(parentShell);
}
public String[] getSelectedContextIds() {
return selectedContextIds;
}
public String[] getSelectedViewpointIds() {
return selectedViewpointIds;
}
public void setSelectedContexts(String[] selectedContextIds) {
this.selectedContextIds = selectedContextIds;
this.originalContextIds = selectedContextIds;
}
public void setSelectedViewpoints(String[] selectedViewpointIds) {
this.selectedViewpointIds = selectedViewpointIds;
}
@Override
protected Control createDialogArea(Composite parent) {
Composite container = (Composite) super.createDialogArea(parent);
Label label = new Label(container, SWT.NONE);
label.setText("Switch the architecture context and/or viewpoints applied to the Papyrus model:");
ArchitectureDomainManager manager = ArchitectureDomainManager.getInstance();
ArchitectureContextComposite acc = new ArchitectureContextComposite(container, 1, 1, GridData.FILL_BOTH, 0, 0);
acc.setAllowSeveralContexts(false);
acc.setSelectedContexts(selectedContextIds);
acc.setSelectedViewpoints(selectedViewpointIds);
acc.setInput(manager.getVisibleArchitectureContexts().toArray(new MergedArchitectureContext[0]));
acc.setUpdater(new ArchitectureContextComposite.Updater() {
@Override
public void update() {
selectedContextIds = acc.getSelectedContexts();
selectedViewpointIds = acc.getSelectedViewpoints();
}
});
return container;
}
@Override
protected void configureShell(Shell newShell) {
super.configureShell(newShell);
newShell.setText("Switch Architecture Context");
}
@Override
protected boolean isResizable() {
return true;
}
@Override
protected IDialogSettings getDialogBoundsSettings() {
IDialogSettings globalSettings = ArchitectureUIPlugin.getPlugin().getDialogSettings();
IDialogSettings dialogSettings = globalSettings.getSection(DIALOG_SECTION);
if (dialogSettings == null) {
dialogSettings = globalSettings.addNewSection(DIALOG_SECTION);
}
return dialogSettings;
}
@Override
protected void okPressed() {
if (!Arrays.equals(getSelectedContextIds(), originalContextIds)) {
MessageBox messageBox = new MessageBox(getShell(), SWT.ICON_WARNING | SWT.YES | SWT.NO);
messageBox.setMessage("Changing the architecture context may cause significant changes to the model.\nDo you like to proceed?");
messageBox.setText("Warning");
int response = messageBox.open();
if (response != SWT.YES)
return;
}
super.okPressed();
}
}
}
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