/* ********************************************************************** **
** 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.filter;
import org.eclipse.jface.dialogs.IDialogConstants;
import org.eclipse.jface.viewers.ArrayContentProvider;
import org.eclipse.jface.viewers.ComboViewer;
import org.eclipse.jface.viewers.ISelectionChangedListener;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.LabelProvider;
import org.eclipse.jface.viewers.SelectionChangedEvent;
import org.eclipse.jface.viewers.StructuredSelection;
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.RGB;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Combo;
import org.eclipse.swt.widgets.Composite;
import org.rssowl.core.Owl;
import org.rssowl.core.persist.ILabel;
import org.rssowl.core.persist.dao.DynamicDAO;
import org.rssowl.core.util.CoreUtils;
import org.rssowl.ui.filter.INewsActionPresentation;
import org.rssowl.ui.internal.OwlUI;
import org.rssowl.ui.internal.dialogs.LabelDialog;
import org.rssowl.ui.internal.dialogs.LabelDialog.DialogMode;
import org.rssowl.ui.internal.util.LayoutUtils;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
/**
* An implementation of {@link INewsActionPresentation} to select a Label.
*
* @author bpasero
*/
public class LabelNewsActionPresentation implements INewsActionPresentation {
private Combo fLabelCombo;
private ComboViewer fViewer;
private Composite fContainer;
private static final Object NEW_LABEL_MARKER = new Object();
/*
* @see org.rssowl.ui.IFilterActionPresentation#create(org.eclipse.swt.widgets.Composite, java.lang.Object)
*/
public void create(Composite parent, Object data) {
fContainer = new Composite(parent, SWT.NONE);
fContainer.setLayout(LayoutUtils.createGridLayout(2, 0, 0, 0, 0, false));
((GridLayout) fContainer.getLayout()).marginLeft = 5;
fContainer.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, true));
fLabelCombo = new Combo(fContainer, SWT.READ_ONLY | SWT.BORDER);
fLabelCombo.setLayoutData(new GridData(SWT.FILL, SWT.BEGINNING, true, false));
fLabelCombo.setVisibleItemCount(15);
fViewer = new ComboViewer(fLabelCombo);
fViewer.setContentProvider(new ArrayContentProvider());
fViewer.setLabelProvider(new LabelProvider() {
@Override
public String getText(Object element) {
if (element == NEW_LABEL_MARKER)
return Messages.LabelNewsActionPresentation_NEW_LABEL;
return ((ILabel) element).getName();
}
});
fViewer.addSelectionChangedListener(new ISelectionChangedListener() {
public void selectionChanged(SelectionChangedEvent event) {
IStructuredSelection selection = (IStructuredSelection) event.getSelection();
if (NEW_LABEL_MARKER == selection.getFirstElement())
onCreateLabel();
}
});
/* Set Input */
Collection<ILabel> labels = CoreUtils.loadSortedLabels();
updateInput(labels);
/* Set Selection */
if (fLabelCombo.getItemCount() > 0) {
if (data != null) {
for (ILabel label : labels) {
if (label.getId().equals(data)) {
fViewer.setSelection(new StructuredSelection(label));
break;
}
}
}
if (fLabelCombo.getSelectionIndex() == -1)
fLabelCombo.select(0);
}
}
private void updateInput(Collection<ILabel> labels) {
List<Object> input = new ArrayList<Object>();
input.addAll(labels);
input.add(NEW_LABEL_MARKER);
fViewer.setInput(input);
}
private void onCreateLabel() {
LabelDialog dialog = new LabelDialog(fContainer.getShell(), DialogMode.ADD, null);
if (dialog.open() == IDialogConstants.OK_ID) {
String name = dialog.getName();
RGB color = dialog.getColor();
ILabel newLabel = Owl.getModelFactory().createLabel(null, name);
newLabel.setColor(OwlUI.toString(color));
newLabel.setOrder(fViewer.getCombo().getItemCount() - 1); // Do not count Marker
DynamicDAO.save(newLabel);
updateInput(CoreUtils.loadSortedLabels());
fViewer.setSelection(new StructuredSelection(newLabel));
} else
fLabelCombo.select(0);
}
/*
* @see org.rssowl.ui.IFilterActionPresentation#dispose()
*/
public void dispose() {
fContainer.dispose();
}
/*
* @see org.rssowl.ui.IFilterActionPresentation#getData()
*/
public Long getData() {
IStructuredSelection selection = (IStructuredSelection) fViewer.getSelection();
Object object = selection.getFirstElement();
if (object instanceof ILabel)
return ((ILabel) selection.getFirstElement()).getId();
return null;
}
}