PageMngrImpl.java

/*****************************************************************************
 * Copyright (c) 2009 CEA LIST & LIFL 
 *
 *    
 * 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  Cedric.dumoulin@lifl.fr - Initial API and implementation
 *
 *****************************************************************************/

package org.eclipse.papyrus.infra.core.sasheditor.di.contentprovider.internal;

import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

import org.eclipse.papyrus.infra.core.sasheditor.contentprovider.IPageMngr;
import org.eclipse.papyrus.infra.core.sashwindows.di.PageRef;
import org.eclipse.papyrus.infra.core.sashwindows.di.SashWindowsMngr;
import org.eclipse.papyrus.infra.core.sashwindows.di.TabFolder;


/**
 * Implementation of the page manager.
 * The page manager provides basic methods to access the DiSashModel and its PageList.
 * This is the users interface to add, open, close and remove pages.
 * 
 * @author cedric dumoulin
 */
public class PageMngrImpl implements IPageMngr {

	/** Internal EMF model */
	private SashWindowsMngr diSashModel;
	
	ContentChangedEventProvider contentChangedEventProvider;

	public PageMngrImpl(SashWindowsMngr diSashModel, ContentChangedEventProvider contentChangedEventProvider) {
		this.diSashModel = diSashModel;
		this.contentChangedEventProvider = contentChangedEventProvider;
	}

	/**
	 * Add a page to the PageList. Do not open the corresponding editor.
	 * The page will be visible in the list.
	 * 
	 * @see org.eclipse.papyrus.infra.core.sasheditor.contentprovider.IPageMngr#addEditor(org.eclipse.emf.ecore.EObject)
	 * 
	 * @param pageIdentifier
	 */
	public void addPage(Object pageIdentifier) {

		// We do not need to disable event delivering, 
		// as addition to pageList doesn't fire events.
		diSashModel.getPageList().addPage(pageIdentifier);
	}

	/**
	 * @see org.eclipse.papyrus.infra.core.sasheditor.contentprovider.IPageMngr#allPages()
	 * 
	 * @return
	 */
	public List<Object> allPages() {

		// TODO : use and return a shadow list ?
		List<Object> list = new ArrayList<Object>();
		for(PageRef pageRef : diSashModel.getPageList().getAvailablePage()) {

			list.add(pageRef.getPageIdentifier());
		}

		return list;
	}

	/**
	 * Remove the page from the SashModel
	 * 
	 * @see org.eclipse.papyrus.infra.core.sasheditor.contentprovider.IPageMngr#closePage(org.eclipse.emf.ecore.EObject)
	 * 
	 * @param pageIdentifier
	 */
	public void closePage(Object pageIdentifier) {
		
		contentChangedEventProvider.setDeliver(false);
		diSashModel.getSashModel().removePageAndEmptyFolder(pageIdentifier);
		contentChangedEventProvider.setDeliver(true);
	}

	/**
	 * Remove all pages from the SashModel. Left only the top level folder
	 * 
	 * @see org.eclipse.papyrus.infra.core.sasheditor.contentprovider.IPageMngr#closePage(org.eclipse.emf.ecore.EObject)
	 * 
	 * @param pageIdentifier
	 */
	public void closeAllOpenedPages() {
		
		contentChangedEventProvider.setDeliver(false);
		diSashModel.getSashModel().removeAllPages();
		contentChangedEventProvider.setDeliver(true);

	}

	/**
	 * Remove all pages from the SashModel. Left only the top level folder
	 * 
	 * @see org.eclipse.papyrus.infra.core.sasheditor.contentprovider.IPageMngr#closePage(org.eclipse.emf.ecore.EObject)
	 * 
	 * @param pageIdentifier
	 */
	public void closeOtherPages(Object pageIdentifier) {
		contentChangedEventProvider.setDeliver(false);
		diSashModel.getSashModel().removeOtherPages(pageIdentifier);
		contentChangedEventProvider.setDeliver(true);
	}

	/**
	 * @see org.eclipse.papyrus.infra.core.sasheditor.contentprovider.IPageMngr#openPage(org.eclipse.emf.ecore.EObject)
	 * 
	 * @param pageIdentifier
	 */
	public void openPage(Object pageIdentifier) {
		// Add the page to the SashModel and to the PageList

        // We do not need to disable event delivering as the operation already fired
		// one single event.

		Iterator<PageRef> iterator = diSashModel.getPageList().getAvailablePage().iterator();
		boolean found = false;
		while(iterator.hasNext() && found == false) {
			// Bug #288806 : the test should be inversed
			if(pageIdentifier.equals(iterator.next().getPageIdentifier())) {
				found = true;
			}
		}
		if(!found) {
			diSashModel.getPageList().addPage(pageIdentifier);
		}
		diSashModel.getSashModel().addPage(pageIdentifier);
	}

	/**
	 * @see org.eclipse.papyrus.infra.core.sasheditor.contentprovider.IPageMngr#removePage(org.eclipse.emf.ecore.EObject)
	 * 
	 * @param pageIdentifier
	 */
	public void removePage(Object pageIdentifier) {
		// remove from pageList and from SashModel
		diSashModel.getPageList().removePage(pageIdentifier);
		
		contentChangedEventProvider.setDeliver(false);
		diSashModel.getSashModel().removePageAndEmptyFolder(pageIdentifier);
		contentChangedEventProvider.setDeliver(true);
	}

	/**
	 * 
	 * @see org.eclipse.papyrus.infra.core.sasheditor.contentprovider.IPageMngr#isOpen(java.lang.Object)
	 * @param pageIdentifier
	 * @return
	 * 
	 */
	public boolean isOpen(Object pageIdentifier) {
		return diSashModel.getSashModel().lookupPage(pageIdentifier) != null;
	}

}