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/*****************************************************************************
* Copyright (c) 2013 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:
* Ansgar Radermacher (CEA LIST) ansgar.radermacher@cea.fr - Initial API and implementation
* Based on edit policy view from patrick.tessier@cea.fr
*/
package org.eclipse.papyrus.infra.extendedtypes.elementtypeview.view;
import org.eclipse.core.runtime.IAdaptable;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.gmf.runtime.emf.type.core.ElementTypeRegistry;
import org.eclipse.gmf.runtime.emf.type.core.IClientContext;
import org.eclipse.gmf.runtime.emf.type.core.IElementType;
import org.eclipse.jface.action.Action;
import org.eclipse.jface.action.IToolBarManager;
import org.eclipse.jface.viewers.IContentProvider;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.ITableLabelProvider;
import org.eclipse.jface.viewers.ITreeContentProvider;
import org.eclipse.jface.viewers.TreeViewer;
import org.eclipse.jface.viewers.Viewer;
import org.eclipse.papyrus.infra.core.services.ServiceException;
import org.eclipse.papyrus.infra.extendedtypes.elementtypeview.Activator;
import org.eclipse.papyrus.infra.services.edit.internal.context.TypeContext;
import org.eclipse.swt.SWT;
import org.eclipse.swt.custom.CLabel;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Tree;
import org.eclipse.swt.widgets.TreeColumn;
import org.eclipse.ui.ISelectionListener;
import org.eclipse.ui.ISelectionService;
import org.eclipse.ui.IWorkbenchPart;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.part.ViewPart;
/**
* This class shows the figure hierarchy attached to a edit-part
*
*/
public class ElementTypeView extends ViewPart {
private ISelectionListener myEditPartlistener;
private TreeViewer viewer;
private CLabel selectedElement;
/*
* (non-Javadoc)
*
* @see org.eclipse.ui.part.WorkbenchPart#setFocus()
*/
public void setFocus() {
Viewer viewer = getViewer();
if(viewer != null && !viewer.getControl().isDisposed()) {
viewer.getControl().setFocus();
}
}
/**
* Create the main tree control
*
* @param parent
* @return Tree
*/
protected Tree createTree(Composite parent) {
Tree tree = new Tree(parent, SWT.H_SCROLL | SWT.V_SCROLL | SWT.MULTI | SWT.FULL_SELECTION);
tree.setLinesVisible(true);
return tree;
}
/**
* Return the viewer.
*
* @return TreeViewer
*/
protected TreeViewer getViewer() {
return viewer;
}
/**
*
* Constructor.
*
*/
public ElementTypeView() {
myEditPartlistener = new ISelectionListener() {
public void selectionChanged(IWorkbenchPart part, ISelection selection) {
if(selection instanceof IStructuredSelection) {
Object selectedobject = ((IStructuredSelection)selection).getFirstElement();
IClientContext papyrusContext;
try {
papyrusContext = TypeContext.getContext();
} catch (ServiceException e) {
Activator.log.error(e);
if(viewer != null) {
viewer.setInput(new Object[0]);
viewer.expandAll();
}
return;
}
EObject selectedEObject = null;
if(selectedobject instanceof EObject) {
selectedEObject = (EObject)selectedobject;
} else if(selectedobject instanceof IAdaptable) {
selectedEObject = (EObject)((IAdaptable)selectedobject).getAdapter(EObject.class);
}
if(selectedElement != null && !selectedElement.isDisposed()) {
selectedElement.setText((selectedEObject != null ) ? selectedEObject.toString() : "" );
}
if(viewer != null) {
if(selectedEObject ==null) {
viewer.setInput(new IElementType[0]);
} else {
viewer.setInput(ElementTypeRegistry.getInstance().getAllTypesMatching(selectedEObject, papyrusContext));
viewer.expandAll();
}
}
}
}
};
ISelectionService selectionService = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getSelectionService();
selectionService.addSelectionListener(myEditPartlistener);
}
protected void createColumns() {
viewer.getTree().setHeaderVisible(true);
viewer.getTree().setLinesVisible(true);
TreeColumn tcName = new TreeColumn(viewer.getTree(), SWT.LEFT);
tcName.setText("Element Type");
tcName.setWidth(300);
TreeColumn tcIdentifier = new TreeColumn(viewer.getTree(), SWT.LEFT);
tcIdentifier.setText("Identifier");
tcIdentifier.setWidth(250);
// TreeColumn tcLayoutManager = new TreeColumn(viewer.getTree(), SWT.LEFT);
// tcLayoutManager.setText("Layout manager");
// tcLayoutManager.setWidth(150);
// TreeColumn tcBorder = new TreeColumn(viewer.getTree(), SWT.LEFT);
// tcBorder.setText("Border");
// tcBorder.setWidth(150);
}
@Override
public void createPartControl(final org.eclipse.swt.widgets.Composite parent) {
final IToolBarManager tbm = getViewSite().getActionBars().getToolBarManager();
tbm.add(getClearViewAction());
Composite composite = new Composite(parent, SWT.BORDER);
composite.setLayout(new GridLayout(1, true));
selectedElement = new CLabel(composite, SWT.NONE);
selectedElement.setText("<no element>");
selectedElement.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, false));
Tree tree= createTree(composite);
tree.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
viewer = new TreeViewer(tree);
viewer.setContentProvider(getContentProvider());
viewer.setLabelProvider(getLabelProvider());
createColumns();
}
protected ITableLabelProvider getLabelProvider() {
return new ElementTypeLabelProvider();
}
protected Action getClearViewAction() {
return new Action() {
@Override
public void run() {
clear();
}
@Override
public boolean isEnabled() {
return true;
}
@Override
public String getToolTipText() {
return getText();
}
@Override
public String getText() {
return "Clear the view";
}
};
}
protected IContentProvider getContentProvider() {
return new ITreeContentProvider() {
public Object[] getElements(final Object inputElement) {
if(inputElement instanceof IElementType[]) {
return (IElementType[])inputElement;
}
return null;
}
public void inputChanged(final Viewer viewer, final Object oldInput, final Object newInput) {
// nothing
}
public void dispose() {
// nothing
}
public boolean hasChildren(final Object element) {
return false;
}
public Object getParent(final Object element) {
return null;
}
public Object[] getChildren(final Object parentElement) {
return new Object[0];
}
};
}
@Override
public void dispose() {
super.dispose();
ISelectionService selectionService = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getSelectionService();
selectionService.removeSelectionListener(myEditPartlistener);
}
private void clear() {
selectedElement.setText("");
viewer.setInput(null);
}
}
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