/*******************************************************************************
 * Copyright (c) 2008-2011 Chair for Applied Software Engineering,
 * Technische Universitaet Muenchen.
 * 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:
 * Aleksander Shterev, Edgar Mueller - initial API and implementation
 ******************************************************************************/
package org.eclipse.emf.emfstore.internal.client.ui.views.changes;

import java.util.List;

import org.eclipse.emf.emfstore.internal.client.ui.views.scm.SCMContentProvider;
import org.eclipse.emf.emfstore.internal.client.ui.views.scm.SCMLabelProvider;
import org.eclipse.emf.emfstore.internal.common.model.ModelElementIdToEObjectMapping;
import org.eclipse.emf.emfstore.internal.common.model.Project;
import org.eclipse.emf.emfstore.internal.server.model.versioning.AbstractChangePackage;
import org.eclipse.emf.emfstore.internal.server.model.versioning.operations.AbstractOperation;
import org.eclipse.jface.layout.GridDataFactory;
import org.eclipse.jface.layout.GridLayoutFactory;
import org.eclipse.jface.viewers.TreeViewer;
import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.TabFolder;
import org.eclipse.swt.widgets.TabItem;

/**
 * A composite that contains multiple tabs displaying the operation from a
 * different view - e.g. grouped by model element, or ungrouped.
 *
 * @author Shterev
 * @author emueller
 */
public class TabbedChangesComposite extends Composite {

	private TabFolder folder;
	private Composite tabComposite;
	private TreeViewer tabTreeViewer;
	private SCMContentProvider contentProvider;
	private SCMLabelProvider labelProvider;

	/**
	 * Default constructor.
	 *
	 * @param parent
	 *            the composite's parent
	 * @param style
	 *            the style
	 * @param changePackages
	 *            the input of change packages as a list
	 * @param project
	 *            the project
	 * @param idToEObjectMapping
	 *            a mapping from IDs to EObjects that is necessary to resolve
	 *            deleted EObjects contained in change packages
	 * @param showRootNodes
	 *            whether to show root nodes
	 */
	public TabbedChangesComposite(Composite parent, int style, List<AbstractChangePackage> changePackages,
		Project project,
		ModelElementIdToEObjectMapping idToEObjectMapping, boolean showRootNodes) {
		super(parent, style);
		createComposite(style, project, idToEObjectMapping, showRootNodes);
		tabTreeViewer.setInput(changePackages);
	}

	/**
	 * Default constructor.
	 *
	 * @param parent
	 *            the composite's parent
	 * @param style
	 *            the style
	 * @param project
	 *            the project
	 * @param operations
	 *            the input of operations as a list
	 * @param idToEObjectMapping
	 *            a mapping from IDs to EObjects that is necessary to resolve
	 *            deleted EObjects contained in operations
	 * @param showRootNodes
	 *            whether to show root nodes
	 */
	public TabbedChangesComposite(Composite parent, int style, Project project, List<AbstractOperation> operations,
		ModelElementIdToEObjectMapping idToEObjectMapping, boolean showRootNodes) {
		super(parent, style);
		createComposite(style, project, idToEObjectMapping, showRootNodes);
		tabTreeViewer.setInput(operations);
	}

	private void createComposite(int style,
		Project project,
		ModelElementIdToEObjectMapping idToEObjectMapping,
		boolean showRootNodes) {

		setLayout(new GridLayout());
		folder = new TabFolder(this, style);
		GridDataFactory.fillDefaults().align(SWT.FILL, SWT.FILL)
			.grab(true, true).applyTo(folder);

		tabComposite = new Composite(folder, SWT.NONE);
		GridLayoutFactory.fillDefaults().applyTo(tabComposite);

		tabTreeViewer = new TreeViewer(tabComposite, SWT.H_SCROLL
			| SWT.V_SCROLL);
		GridDataFactory.fillDefaults().grab(true, true)
			.applyTo(tabTreeViewer.getControl());

		contentProvider = new SCMContentProvider(idToEObjectMapping);
		contentProvider.setShowRootNodes(showRootNodes);
		labelProvider = new SCMLabelProvider(project);
		labelProvider.setChangePackageVisualizationHelper(
			new ChangePackageVisualizationHelper(idToEObjectMapping));
		tabTreeViewer.setContentProvider(contentProvider);
		tabTreeViewer.setLabelProvider(labelProvider);
		tabTreeViewer.expandToLevel(1);

		final TabItem opTab = new TabItem(folder, style);
		opTab.setText(Messages.TabbedChangesComposite_OperationsText);
		opTab.setControl(tabComposite);
	}

	/**
	 * {@inheritDoc}
	 * 
	 * @see org.eclipse.swt.widgets.Widget#dispose()
	 */
	@Override
	public void dispose() {
		contentProvider.dispose();
		labelProvider.dispose();
	}

}