/* ********************************************************************** **
** Copyright notice **
** **
** (c) 2005-2009 RSSOwl Development Team **
** http://www.rssowl.org/ **
** **
** 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.rssowl.org/legal/epl-v10.html **
** **
** A copy is found in the file epl-v10.html and important notices to the **
** license from the team is found in the textfile LICENSE.txt distributed **
** in this package. **
** **
** This copyright notice MUST APPEAR in all copies of the file! **
** **
** Contributors: **
** RSSOwl Development Team - initial API and implementation **
** **
** ********************************************************************** */
package org.rssowl.ui.internal;
import org.eclipse.jface.action.IStatusLineManager;
import org.eclipse.jface.viewers.ISelectionChangedListener;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.SelectionChangedEvent;
import org.eclipse.osgi.util.NLS;
import org.rssowl.core.persist.IBookMark;
import org.rssowl.core.persist.IFolder;
import org.rssowl.core.persist.IMark;
import org.rssowl.core.persist.INews;
import org.rssowl.core.persist.INewsBin;
import org.rssowl.core.persist.ISearchMark;
/**
* Add the <code>StatusLineUpdater</code> to your ViewPart to have the statusbar
* describing the selected elements.
*
* @author bpasero
*/
public class StatusLineUpdater implements ISelectionChangedListener {
private IStatusLineManager fStatusLineManager;
/**
* @param statusLineManager
*/
public StatusLineUpdater(IStatusLineManager statusLineManager) {
fStatusLineManager = statusLineManager;
}
/*
* @see org.eclipse.jface.viewers.ISelectionChangedListener#selectionChanged(org.eclipse.jface.viewers.SelectionChangedEvent)
*/
public void selectionChanged(SelectionChangedEvent event) {
IStructuredSelection selection = (IStructuredSelection) event.getSelection();
String text = formatElements(selection.toArray());
/* Show Message */
fStatusLineManager.setMessage(text);
}
private String formatElements(Object elements[]) {
/* No Element selected */
if (elements.length == 0)
return ""; //$NON-NLS-1$
/* Only 1 Element selected */
if (elements.length == 1) {
Object element = elements[0];
if (element instanceof IFolder)
return ((IFolder) element).getName();
else if (element instanceof IMark)
return ((IMark) element).getName();
else if (element instanceof EntityGroup)
return ((EntityGroup) element).getName();
else if (element instanceof INews) // Ignore This
return ""; //$NON-NLS-1$
return Messages.StatusLineUpdater_ITEM_SELECTED;
}
/* More than 1 Element selected */
int newsCount = 0;
int folderCount = 0;
int bookMarkCount = 0;
int newsBinCount = 0;
int searchMarkCount = 0;
int viewerGroupCount = 0;
for (Object element : elements) {
if (element instanceof IFolder)
folderCount++;
else if (element instanceof IBookMark)
bookMarkCount++;
else if (element instanceof INewsBin)
newsBinCount++;
else if (element instanceof ISearchMark)
searchMarkCount++;
else if (element instanceof EntityGroup)
viewerGroupCount++;
else if (element instanceof INews)
newsCount++;
}
StringBuilder itemsBuf = new StringBuilder();
if (folderCount > 0)
itemsBuf.append(folderCount == 1 ? NLS.bind(Messages.StatusLineUpdater_N_FOLDER, folderCount) : NLS.bind(Messages.StatusLineUpdater_N_FOLDERS, folderCount)).append(", "); //$NON-NLS-1$
if (bookMarkCount > 0)
itemsBuf.append(bookMarkCount == 1 ? NLS.bind(Messages.StatusLineUpdater_N_BOOKMARK, bookMarkCount) : NLS.bind(Messages.StatusLineUpdater_N_BOOKMARKS, bookMarkCount)).append(", "); //$NON-NLS-1$
if (newsBinCount > 0)
itemsBuf.append(newsBinCount == 1 ? NLS.bind(Messages.StatusLineUpdater_N_BIN, newsBinCount) : NLS.bind(Messages.StatusLineUpdater_N_BINS, newsBinCount)).append(", "); //$NON-NLS-1$
if (searchMarkCount > 0)
itemsBuf.append(searchMarkCount == 1 ? NLS.bind(Messages.StatusLineUpdater_N_SEARCH, searchMarkCount) : NLS.bind(Messages.StatusLineUpdater_N_SEARCHES, searchMarkCount)).append(", "); //$NON-NLS-1$
if (viewerGroupCount > 0)
itemsBuf.append(viewerGroupCount == 1 ? NLS.bind(Messages.StatusLineUpdater_N_GROUP, viewerGroupCount) : NLS.bind(Messages.StatusLineUpdater_N_GROUPS, viewerGroupCount)).append(", "); //$NON-NLS-1$
if (newsCount > 0)
itemsBuf.append(NLS.bind(Messages.StatusLineUpdater_N_NEWS, newsCount)).append(", "); //$NON-NLS-1$
if (itemsBuf.length() > 0)
itemsBuf.delete(itemsBuf.length() - 2, itemsBuf.length());
StringBuilder buf = new StringBuilder();
buf.append(NLS.bind(Messages.StatusLineUpdater_N_ITEMS_SELECTED, elements.length, itemsBuf.toString()));
return buf.toString();
}
}