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The set of useful GWT components

There is a newer version: 2.0.9

/*
 * Copyright 2008-2012 Sergey Skladchikov
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.gwt.advanced.client.datamodel;

/**
 * This is a lazy loadable hierarchical data model.
 *
 * @author Sergey Skladchikov
 * @since 1.0.0
 */
public class LazyHierarchicalGridDataModel extends HierarchicalGridDataModel implements LazyLoadable {
    /**
     * Initializes the model with the preloaded piece of data set.
     *
     * @param data is a data set piece.
     */
    public LazyHierarchicalGridDataModel (Object[][] data) {
        super((Object[][])null);
        final LazyHierarchicalGridDataModel source = this;
        setDelegate(new LazyGridDataModel(data) {
            protected void prepareEvent(EditableModelEvent event) {
                event.setSource(source);
            }
        });
    }

    /**
     * Creates a new instnace of this class and defines the handler.
     *
     * @param handler is a callback handler to be invoked on changes.
     */
    public LazyHierarchicalGridDataModel (DataModelCallbackHandler handler) {
        super((Object[][])null);
        final LazyHierarchicalGridDataModel source = this;
        setDelegate(new LazyGridDataModel(handler) {
            protected void prepareEvent(EditableModelEvent event) {
                event.setSource(source);
            }
        });
    }

    /** {@inheritDoc} */
    public void setTotalRowCount (int totalRowCount) {
        ((LazyLoadable)getDelegate()).setTotalRowCount(totalRowCount);
    }
}