de.datenhahn.vaadin.rendererpackage.ComponentRenderer.java Source code

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Here is the source code for de.datenhahn.vaadin.rendererpackage.ComponentRenderer.java

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/*
 * Copyright 2000-2014 Vaadin Ltd.
 * 
 * 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 de.datenhahn.vaadin.rendererpackage;

import com.vaadin.server.ExternalResource;
import com.vaadin.server.ThemeResource;
import com.vaadin.ui.Component;
import com.vaadin.ui.Grid;
import elemental.json.Json;
import elemental.json.JsonValue;

/**
 * A renderer for presenting images.
 * <p>
 * The image for each rendered cell is read from a Resource-typed property in
 * the data source. Only {@link ExternalResource}s and {@link ThemeResource}s
 * are currently supported.
 * 
 * @since 7.4
 * @author Vaadin Ltd
 */
public class ComponentRenderer extends Grid.AbstractRenderer<Component> {

    public ComponentRenderer() {
        super(Component.class, null);
    }

    @Override
    public JsonValue encode(Component component) {
        component.setParent(getParentGrid());
        return Json.create(component.getConnectorId());
    }

}