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/*****************************************************************************
* Copyright (c) 2017 Cedric Dumoulin and others.
*
* 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:
* Cedric Dumoulin - Initial API and implementation
*
*****************************************************************************/
package org.eclipse.papyrus.infra.core.sasheditor.internal;
import java.util.LinkedList;
import org.eclipse.papyrus.infra.core.sasheditor.editor.IPage;
import org.eclipse.papyrus.infra.core.sasheditor.editor.IPageLifeCycleEventsListener;
/**
* An history of the last active Parts.
* This history can be used to select the last active Part when the current acctive part is closed.
*
* @author cedric dumoulin
*
* @since 2.0.0
*/
public class ActivePageHistoryTracker implements IPageLifeCycleEventsListener {
private LinkedList<IPage> history = new LinkedList<IPage>();
/**
* @see org.eclipse.papyrus.infra.core.sasheditor.editor.IPageChangedListener#pageChanged(org.eclipse.papyrus.infra.core.sasheditor.editor.IPage)
*
* @param newPage
*/
@Override
public void pageChanged(IPage newPage) {
System.out.println("pageChanged - " + newPage.getPageTitle());
}
/**
* @see org.eclipse.papyrus.infra.core.sasheditor.editor.IPageLifeCycleEventsListener#pageOpened(org.eclipse.papyrus.infra.core.sasheditor.editor.IPage)
*
* @param page
*/
@Override
public void pageOpened(IPage page) {
// Add the page first
history.add(page);
// showHistory();
}
/**
* @see org.eclipse.papyrus.infra.core.sasheditor.editor.IPageLifeCycleEventsListener#pageClosed(org.eclipse.papyrus.infra.core.sasheditor.editor.IPage)
*
* @param page
*/
@Override
public void pageClosed(IPage page) {
// Remove the Page from history if it is already in
history.remove(page);
// showHistory();
}
/**
* @see org.eclipse.papyrus.infra.core.sasheditor.editor.IPageLifeCycleEventsListener#pageActivated(org.eclipse.papyrus.infra.core.sasheditor.editor.IPage)
*
* @param page
*/
@Override
public void pageActivated(IPage page) {
// Remove the Page from history if it is already in
history.remove(page);
// Add the page first
history.push(page);
// showHistory();
}
/**
* @see org.eclipse.papyrus.infra.core.sasheditor.editor.IPageLifeCycleEventsListener#pageDeactivated(org.eclipse.papyrus.infra.core.sasheditor.editor.IPage)
*
* @param page
*/
@Override
public void pageDeactivated(IPage page) {
}
/**
* @see org.eclipse.papyrus.infra.core.sasheditor.editor.IPageLifeCycleEventsListener#pageAboutToBeOpened(org.eclipse.papyrus.infra.core.sasheditor.editor.IPage)
*
* @param page
*/
@Override
public void pageAboutToBeOpened(IPage page) {
}
/**
* @see org.eclipse.papyrus.infra.core.sasheditor.editor.IPageLifeCycleEventsListener#pageAboutToBeClosed(org.eclipse.papyrus.infra.core.sasheditor.editor.IPage)
*
* @param page
*/
@Override
public void pageAboutToBeClosed(IPage page) {
}
/**
* Get the last active page found in history.
* @return The last active page, or null if none is set in history.
*/
public IPage lastActivePage() {
return history.peekFirst();
}
// /**
// * Output the history on stdout
// */
// protected void showHistory() {
// for( IPage page : history) {
// System.out.print("[" + page.getPageTitle() +"]");
// }
// System.out.println();
// }
}
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