/*******************************************************************************
* Copyright (c) 2006, 2008 Soyatec (http://www.soyatec.com) 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:
* Soyatec - initial API and implementation
*******************************************************************************/
package org.eclipse.e4.xwt.jface;
import org.eclipse.e4.xwt.XWT;
import org.eclipse.e4.xwt.XWTException;
import org.eclipse.e4.xwt.core.IUserDataConstants;
import org.eclipse.e4.xwt.internal.core.Core;
import org.eclipse.e4.xwt.internal.utils.UserData;
import org.eclipse.e4.xwt.javabean.metadata.properties.PropertiesConstants;
import org.eclipse.e4.xwt.metadata.IMetaclass;
import org.eclipse.e4.xwt.metadata.IProperty;
import org.eclipse.jface.viewers.AbstractTableViewer;
import org.eclipse.jface.viewers.ILabelProvider;
import org.eclipse.jface.viewers.ILabelProviderListener;
import org.eclipse.jface.viewers.ITableLabelProvider;
import org.eclipse.jface.viewers.Viewer;
import org.eclipse.swt.graphics.Image;
/**
*
* @author yyang (yves.yang@soyatec.com)
*/
public class DefaultViewerLabelProvider implements ITableLabelProvider, ILabelProvider {
private Viewer viewer;
protected String bindingPath;
private IProperty columnsProperty;
public DefaultViewerLabelProvider(Viewer viewer) {
this.viewer = viewer;
}
public String getBindingPath() {
return bindingPath;
}
public void setBindingPath(String bindingPath) {
this.bindingPath = bindingPath;
}
protected IProperty getColumnsProperty() {
if (columnsProperty == null) {
IMetaclass metaclass = XWT.getMetaclass(viewer.getClass());
columnsProperty = metaclass.findProperty(PropertiesConstants.PROPERTY_COLUMNS);
if (columnsProperty == null) {
throw new XWTException("Columns property is not found.");
}
}
return columnsProperty;
}
protected Viewer getViewer() {
return viewer;
}
public void addListener(ILabelProviderListener listener) {
}
public void dispose() {
}
public boolean isLabelProperty(Object element, String property) {
return false;
}
public void removeListener(ILabelProviderListener listener) {
}
public Image getImage(Object element) {
return getColumnImage(element, 0);
}
public String getText(Object dataContext) {
return getColumnText(dataContext, 0);
}
public String getColumnText(Object element, int columnIndex) {
return JFacesHelper.getColumnText(getViewer(), element, columnIndex, getPaths());
}
public Image getColumnImage(Object element, int columnIndex) {
return JFacesHelper.getColumnImage(getViewer(), element, columnIndex, getPaths());
}
protected Object[] getPaths() {
Viewer viewer = getViewer();
if (viewer instanceof AbstractTableViewer) {
Object[] objects = ((AbstractTableViewer) getViewer()).getColumnProperties();
for (int i = 0; i < objects.length; i++) {
if ((objects[i] == null)) {
objects[i] = getBindingPath();
}
}
return objects;
}
String path = bindingPath;
if (path == null) {
path = (String) UserData.getLocalData(getViewer(), IUserDataConstants.XWT_PROPERTY_DATA_KEY);
}
if (path == null) {
return Core.EMPTY_ARRAY;
}
return new String[] {path};
}
}