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/*******************************************************************************
* Copyright (c) 2012 TESIS DYNAware GmbH 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:
* Torsten Sommer <torsten.sommer@tesis.de> - initial API and implementation
*******************************************************************************/
package org.eclipse.fx.emf.edit.ui;
import javafx.scene.Node;
import javafx.scene.control.Cell;
import javafx.scene.control.ListCell;
import javafx.scene.control.ListView;
import javafx.util.Callback;
import org.eclipse.emf.common.notify.AdapterFactory;
import org.eclipse.emf.common.notify.Notification;
import org.eclipse.emf.common.notify.Notifier;
import org.eclipse.emf.common.notify.impl.AdapterImpl;
import org.eclipse.emf.edit.provider.IItemColorProvider;
import org.eclipse.emf.edit.provider.IItemFontProvider;
import org.eclipse.emf.edit.provider.IItemLabelProvider;
import org.eclipse.jdt.annotation.NonNull;
/**
* This list cell factory wraps an {@link AdapterFactory} and delegates calls to its {@link ListCell}s to the
* corresponding adapter-implemented item provider interfaces.
*
* <ul>
* <li>{@link Cell#setText(String)} and {@link Cell#setGraphic(Node)} are delegated to
* {@link IItemLabelProvider}</li>
* <li>{@link Cell#setTextFill(javafx.scene.paint.Paint)} and the CSS property
* <code>-fx-background-color</code> are delegated to {@link IItemColorProvider}</li>
* <li>
* {@link Cell#setFont(javafx.scene.text.Font)} is delegated to {@link IItemFontProvider}</li>
* </ul>
*/
public class AdapterFactoryListCellFactory extends AdapterFactoryCellFactory implements Callback<ListView<Object>, ListCell<Object>> {
/**
* Create a new adapter factory for list cells
*
* @param adapterFactory
* the adapter factory
*/
public AdapterFactoryListCellFactory(@NonNull AdapterFactory adapterFactory) {
super(adapterFactory);
}
@Override
public ListCell<Object> call(@NonNull ListView<Object> param) {
final ListCell<Object> listCell = new ListCell<Object>() {
Object currentItem = null;
ICellEditHandler cellEditHandler;
AdapterImpl adapter = new AdapterImpl() {
@Override
public void notifyChanged(Notification msg) {
update(msg.getNotifier());
}
};
@Override
protected void updateItem(Object item, boolean empty) {
super.updateItem(item, empty);
// check if the item changed
if (item != this.currentItem) {
// remove the adapter if attached
if (this.currentItem instanceof Notifier)
((Notifier) this.currentItem).eAdapters().remove(this.adapter);
// update the current item
this.currentItem = item;
// attach the adapter to the new item
if (this.currentItem instanceof Notifier)
((Notifier) this.currentItem).eAdapters().add(this.adapter);
}
// notify the listeners
for (ICellUpdateListener cellUpdateListener : AdapterFactoryListCellFactory.this.cellUpdateListeners)
cellUpdateListener.updateItem(this, item, empty);
update(item);
}
@Override
public void startEdit() {
super.startEdit();
this.cellEditHandler = getCellEditHandler(this);
if (this.cellEditHandler != null)
this.cellEditHandler.startEdit(this);
}
@Override
public void commitEdit(Object newValue) {
super.commitEdit(newValue);
if (this.cellEditHandler != null)
this.cellEditHandler.commitEdit(this, newValue);
}
@Override
public void cancelEdit() {
super.cancelEdit();
if (this.cellEditHandler != null)
this.cellEditHandler.cancelEdit(this);
update(getItem());
}
void update(Object item) {
applyItemProviderStyle(item, this, AdapterFactoryListCellFactory.this.adapterFactory);
}
};
for (ICellCreationListener cellCreationListener : this.cellCreationListeners)
cellCreationListener.cellCreated(listCell);
return listCell;
}
}
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