StoreRemoveEvent.java

/*******************************************************************************
 * Copyright (c) 2012-2017 Codenvy, S.A.
 * 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:
 *   Codenvy, S.A. - initial API and implementation
 *******************************************************************************/
package org.eclipse.che.ide.ui.smartTree.event;

import com.google.gwt.event.shared.EventHandler;
import com.google.gwt.event.shared.GwtEvent;
import com.google.gwt.event.shared.HandlerRegistration;
import com.google.gwt.event.shared.HasHandlers;

import org.eclipse.che.ide.api.data.tree.Node;
import org.eclipse.che.ide.ui.smartTree.event.StoreRemoveEvent.StoreRemoveHandler;

import java.util.Collections;
import java.util.List;

/**
 * Indicates that an element that was visible has been removed from the Store.
 *
 * @author Vlad Zhukovsiy
 */
public class StoreRemoveEvent extends GwtEvent<StoreRemoveHandler> {

    public interface HasStoreRemoveHandler extends HasHandlers {
        HandlerRegistration addStoreRemoveHandler(StoreRemoveHandler handler);
    }

    public interface StoreRemoveHandler extends EventHandler {
        void onRemove(StoreRemoveEvent event);
    }

    private static Type<StoreRemoveHandler> TYPE;

    public static Type<StoreRemoveHandler> getType() {
        if (TYPE == null) {
            TYPE = new Type<>();
        }
        return TYPE;
    }

    private final int index;

    private final Node       node;
    private       Node       parent;
    private       List<Node> children;

    public StoreRemoveEvent(int index, Node node, Node parent, List<Node> children) {
        this.index = index;
        this.node = node;
        this.parent = parent;
        this.children = Collections.unmodifiableList(children);
    }

    @Override
    public Type<StoreRemoveHandler> getAssociatedType() {
        return getType();
    }

    public int getIndex() {
        return index;
    }

    public Node getNode() {
        return node;
    }

    public List<Node> getChildren() {
        return children;
    }

    public Node getParent() {
        return parent;
    }

    /** {@inheritDoc} */
    @Override
    protected void dispatch(StoreRemoveHandler handler) {
        handler.onRemove(this);
    }
}