packages/dashbuilder/dashbuilder-client/dashbuilder-displayer-editor/src/main/java/org/dashbuilder/client/editor/external/ExternalDragComponent.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.dashbuilder.client.editor.external;

import java.util.HashMap;
import java.util.Map;

import javax.enterprise.context.Dependent;
import javax.inject.Inject;

import com.google.gwt.user.client.ui.IsWidget;
import org.dashbuilder.displayer.client.widgets.ExternalComponentPresenter;
import org.dashbuilder.displayer.external.ExternalComponentMessageHelper;
import org.dashbuilder.external.model.ExternalComponent;
import org.gwtbootstrap3.client.ui.Label;
import org.jboss.errai.ioc.client.container.SyncBeanManager;
import org.uberfire.ext.layout.editor.client.api.LayoutDragComponent;
import org.uberfire.ext.layout.editor.client.api.RenderingContext;

import static java.util.stream.Collectors.toMap;
import static org.dashbuilder.external.model.ExternalComponent.COMPONENT_ID_KEY;
import static org.dashbuilder.external.model.ExternalComponent.COMPONENT_PARTITION_KEY;

@Dependent
public class ExternalDragComponent implements LayoutDragComponent {

    @Inject
    SyncBeanManager beanManager;
    @Inject
    ExternalComponentPresenter externalComponentPresenter;
    @Inject
    ExternalComponentMessageHelper messageHelper;

    @Override
    public IsWidget getShowWidget(RenderingContext ctx) {
        var ltProps = ctx.getComponent().getProperties();
        var storedComponentId = ltProps.get(COMPONENT_ID_KEY);
        var partition = ltProps.get(COMPONENT_PARTITION_KEY);
        var baseUrl = ltProps.get(ExternalComponent.COMPONENT_BASE_URL_KEY);
        if (storedComponentId == null) {
            return new Label("Component not found.");
        }

        externalComponentPresenter.withComponentBaseUrlIdAndPartition(baseUrl, storedComponentId, partition);

        var componentProperties = new HashMap<String, Object>(retrieveComponentProperties(storedComponentId, ltProps));
        var message = messageHelper.newInitMessage(componentProperties);
        externalComponentPresenter.sendMessage(message);

        return externalComponentPresenter.getView();
    }

    private Map<String, String> retrieveComponentProperties(String componentId,
                                                            Map<String, String> componentProperties) {
        String prefix = getComponentPrefix(componentId);
        return componentProperties.entrySet()
                .stream().filter(e -> e.getKey().startsWith(prefix))
                .collect(toMap(e -> removeComponentPrefix(componentId, e.getKey()),
                        Map.Entry::getValue));
    }

    private String getComponentPrefix(String componentId) {
        return componentId + ".";
    }

    private String removeComponentPrefix(String componentId, String key) {
        return key.replaceFirst(componentId + ".", "");
    }
}