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/*******************************************************************************
* Copyright (c) 2019 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.actions.visibility;
import java.util.Collection;
import org.eclipse.emf.ecore.resource.Resource;
import org.eclipse.gef.Disposable;
import org.eclipse.gmf.runtime.diagram.ui.editparts.IGraphicalEditPart;
import org.eclipse.jface.action.IAction;
import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.sirius.diagram.DDiagram;
import org.eclipse.sirius.diagram.DDiagramElement;
import org.eclipse.sirius.diagram.business.api.query.DDiagramElementQuery;
import org.eclipse.sirius.diagram.ui.business.api.provider.AbstractDDiagramElementLabelItemProvider;
import org.eclipse.sirius.diagram.ui.provider.DiagramUIPlugin;
import org.eclipse.sirius.diagram.ui.provider.Messages;
import org.eclipse.sirius.diagram.ui.tools.api.image.DiagramImagesPath;
import org.eclipse.sirius.diagram.ui.tools.internal.editor.DiagramOutlinePage;
import org.eclipse.sirius.ecore.extender.business.api.permission.IPermissionAuthority;
import org.eclipse.sirius.ecore.extender.business.api.permission.PermissionAuthorityRegistry;
import org.eclipse.sirius.ext.base.Option;
import com.google.common.base.Predicate;
import com.google.common.collect.Iterables;
/**
* Action to reveal labels in tabbar.
*
* @author fbarbin
*/
public class TabbarRevealLabelsAction extends RevealOutlineLabelsAction implements Disposable {
private static Predicate<Object> isEnabledPredicate = new Predicate<Object>() {
@Override
public boolean apply(Object input) {
boolean result = false;
if (input instanceof IGraphicalEditPart) {
result = TabbarRevealLabelsAction.isEnabled((IGraphicalEditPart) input);
} else if (input instanceof DDiagramElement) {
result = TabbarRevealLabelsAction.isEnabled((DDiagramElement) input);
} else if (input instanceof AbstractDDiagramElementLabelItemProvider) {
Option<DDiagramElement> optionTarget = ((AbstractDDiagramElementLabelItemProvider) input).getDiagramElementTarget();
if (optionTarget.some()) {
result = TabbarRevealLabelsAction.isEnabled(optionTarget.get());
}
}
return result;
}
};
private HideDDiagramElementLabelAction oppositeAction;
/**
* Constructor.
*/
public TabbarRevealLabelsAction() {
this(Messages.RevealOutlineLabelsAction_label);
}
/**
* Constructor.
*
* @param text
* the action's text, or <code>null</code> if there is no text
*/
public TabbarRevealLabelsAction(final String text) {
this(text, DiagramUIPlugin.Implementation.getBundledImageDescriptor(DiagramImagesPath.REVEAL_LABEL_IMG));
}
/**
* Constructor.
*
* @param text
* the action's text, or <code>null</code> if there is no text
* @param image
* the action's image, or <code>null</code> if there is no image
*/
public TabbarRevealLabelsAction(final String text, final ImageDescriptor image) {
super(text, image);
setId(text);
}
@Override
public boolean isEnabled() {
if (this.selection instanceof IStructuredSelection) {
return isEnabled(((IStructuredSelection) this.selection).toList());
}
return super.isEnabled();
}
/**
* Check if at least on element has a label that can be revealed.
*
* @param elementsToCheck
* The elements to check.
* @return true if at least on element has a label that can be revealed, false otherwise
*/
public static boolean isEnabled(Collection<?> elementsToCheck) {
return Iterables.any(elementsToCheck, isEnabledPredicate);
}
@Override
public void selectionChanged(final IAction action, final ISelection s) {
super.selectionChanged(action, s);
this.setEnabled(true);
if (s instanceof DiagramOutlinePage.TreeSelectionWrapper) {
// Action of the outline
this.setEnabled(TabbarRevealLabelsAction.isEnabled(((DiagramOutlinePage.TreeSelectionWrapper) s).toList()));
} else if (s instanceof IStructuredSelection) {
// Action of the tabbar or of the contextual menu
this.setEnabled(TabbarRevealLabelsAction.isEnabled(((IStructuredSelection) s).toList()));
}
}
/**
* {@inheritDoc}
*/
@Override
protected boolean doRun(final Object element) {
boolean value = super.doRun(element);
// We activate the Hide Label Action if needed.
if (oppositeAction != null) {
oppositeAction.setEnabled(oppositeAction.isEnabled());
}
setEnabled(isEnabled());
return value;
}
private static boolean isEnabled(IGraphicalEditPart graphicalEditPart) {
if (graphicalEditPart.isActive() && graphicalEditPart.resolveSemanticElement() instanceof DDiagramElement) {
return TabbarRevealLabelsAction.isEnabled((DDiagramElement) graphicalEditPart.resolveSemanticElement());
}
return false;
}
private static boolean isEnabled(DDiagramElement diagramElement) {
DDiagram dDiagram = diagramElement.getParentDiagram();
DDiagramElementQuery query = new DDiagramElementQuery(diagramElement);
return (dDiagram != null && isEditable(dDiagram)) && query.isLabelHidden();
}
private static boolean isEditable(DDiagram diagram) {
boolean isEditable = false;
Resource resource = diagram.eResource();
if (resource != null) {
IPermissionAuthority permissionAuthority = PermissionAuthorityRegistry.getDefault().getPermissionAuthority(resource.getResourceSet());
isEditable = permissionAuthority.canEditInstance(diagram);
}
return isEditable;
}
/**
* Set the corresponding Hide Label opposite action.
*
* @param action
* the Hide Label action.
*/
public void setOppositeHideAction(HideDDiagramElementLabelAction action) {
this.oppositeAction = action;
}
@Override
public void dispose() {
this.selection = null;
this.oppositeAction = null;
}
}
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