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/*******************************************************************************
* Copyright (c) 2010, 2016 THALES GLOBAL SERVICES.
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* Obeo - initial API and implementation
*******************************************************************************/
package org.eclipse.sirius.diagram.ui.tools.internal.editor.tabbar;
import java.util.Arrays;
import java.util.Collection;
import java.util.List;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.gmf.runtime.diagram.ui.parts.IDiagramWorkbenchPart;
import org.eclipse.jface.action.IContributionItem;
import org.eclipse.jface.action.IToolBarManager;
import org.eclipse.jface.action.ToolBarManager;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.StructuredSelection;
import org.eclipse.sirius.business.api.session.Session;
import org.eclipse.sirius.common.ui.tools.api.util.EclipseUIUtil;
import org.eclipse.sirius.diagram.ui.tools.api.editor.DDiagramEditor;
import org.eclipse.sirius.ecore.extender.business.api.permission.IAuthorityListener;
import org.eclipse.sirius.ecore.extender.business.api.permission.IPermissionAuthority;
import org.eclipse.sirius.ecore.extender.business.api.permission.PermissionAuthorityRegistry;
import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.ToolBar;
import org.eclipse.ui.ISelectionListener;
import org.eclipse.ui.IWorkbenchPage;
import org.eclipse.ui.IWorkbenchPart;
/**
* A beautiful tab bar.
*
* @author mchauvin
*/
public class Tabbar extends Composite implements ISelectionListener, IAuthorityListener {
/**
* Tabbar id used to look for extensions through the "org.eclipse.ui.menus"
* extension point with toolbar scheme.
*/
public static final String TABBAR_ID = "org.eclipse.sirius.diagram.ui.tabbar"; //$NON-NLS-1$
private IDiagramWorkbenchPart part;
private IWorkbenchPage page;
private ToolBar toolBar;
private ToolBarManager manager;
private AbstractTabbarFiller diagramFiller;
private IPermissionAuthority permissionAuthority;
private ITabbarContributorProvider tabbarContributorProvider;
private Collection<Object> currentSelection;
/**
* Instantiate a new tab bar.
*
* @param parent
* the parent composite
* @param part
* the diagram workbench part
*/
public Tabbar(Composite parent, final IDiagramWorkbenchPart part) {
super(parent, SWT.None);
setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
this.part = part;
this.page = part.getSite().getPage();
GridLayout layout = new GridLayout(1, true);
layout.verticalSpacing = 0;
layout.marginHeight = 0;
layout.marginWidth = 0;
this.setLayout(layout);
this.tabbarContributorProvider = new ExtensionPointTabbarContributorProvider();
createToolBar();
fillForDiagram();
}
/**
* Get the tool bar manager.
*
* @return the tool bar manager
*/
public IToolBarManager getToolBarManager() {
return manager;
}
private void createToolBar() {
toolBar = new ToolBar(this, SWT.FLAT);
toolBar.setBackgroundMode(SWT.INHERIT_DEFAULT);
toolBar.setLayoutData(new org.eclipse.swt.layout.GridData(org.eclipse.swt.layout.GridData.FILL_HORIZONTAL));
manager = new TabbarToolBarManager(toolBar, part);
setPermissionAuthorityListener();
}
private void setPermissionAuthorityListener() {
if (part instanceof DDiagramEditor) {
DDiagramEditor editor = (DDiagramEditor) part;
Session session = editor.getSession();
if (session != null) {
permissionAuthority = PermissionAuthorityRegistry.getDefault().getPermissionAuthority(session.getSessionResource().getResourceSet());
if (permissionAuthority != null) {
permissionAuthority.addAuthorityListener(this);
}
}
}
}
private void fillForDiagram() {
if (tabbarContributorProvider.hasContributor()) {
diagramFiller = new TabbarFillerWithContributor(manager, page, tabbarContributorProvider);
} else {
diagramFiller = new TabbarFillerWithContributions(manager, page);
}
diagramFiller.setPart(part);
diagramFiller.fill();
}
@Override
public void selectionChanged(IWorkbenchPart partSelected, ISelection selection) {
if (partSelected == this.part) {
if (currentSelection == null || !sameSelection(selection)) {
if (selection instanceof StructuredSelection) {
currentSelection = ((StructuredSelection) selection).toList();
}
reinitToolBar(selection);
}
}
}
@SuppressWarnings("rawtypes")
private boolean sameSelection(ISelection selection) {
if (selection instanceof StructuredSelection) {
List newSelection = ((StructuredSelection) selection).toList();
if (newSelection.size() == currentSelection.size()) {
return currentSelection.containsAll(newSelection);
}
}
return false;
}
/**
* Reinit the tool bar for diagram.
*
* @param iSelection
* the selection
*/
public void reinitToolBar(ISelection iSelection) {
if (diagramFiller != null) {
diagramFiller.update(iSelection);
updateAllItems();
}
}
/**
* Dispose this tab bar.
*/
@Override
public void dispose() {
unSetPermissionAuthorityListener();
if (diagramFiller != null) {
diagramFiller.dispose();
diagramFiller = null;
}
// Dispose before remove all, else the contribution items will not be
// disposed.
manager.dispose();
manager.removeAll();
part = null;
page = null;
toolBar.dispose();
toolBar = null;
}
private void unSetPermissionAuthorityListener() {
permissionAuthority.removeAuthorityListener(this);
permissionAuthority = null;
}
private void updateAllItems() {
EclipseUIUtil.displayAsyncExec(new Runnable() {
@Override
public void run() {
List<IContributionItem> items = Arrays.asList(manager.getItems());
for (IContributionItem item : items) {
// The enablement update of Diagram actions encapsulated in
// DiagramActionContributionItem is directly performed in
// their item update.
item.update();
}
}
});
}
@Override
public void notifyIsLocked(EObject instance) {
updateAllItems();
}
@Override
public void notifyIsReleased(EObject instance) {
updateAllItems();
}
@Override
public void notifyIsLocked(Collection<EObject> instances) {
updateAllItems();
}
@Override
public void notifyIsReleased(Collection<EObject> instances) {
updateAllItems();
}
/**
* The Tabbar should not take the keyboard focus or let one of its
* contributions take it (Zoom combo during editor part activation for
* example). The contribution can have the focus when the user explicitly
* select/enter their control.
*
* @see org.eclipse.swt.widgets.Control#setFocus()
* @return false the Tabbar will never intercepts the keyboard focus or ask
* its contributions to intercepts it.
*/
@Override
public boolean setFocus() {
return false;
}
}
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