com.adobe.acs.commons.mcp.form.workflow.WorkflowModelSelector Maven / Gradle / Ivy

/*
 * #%L
 * ACS AEM Commons Bundle
 * %%
 * Copyright (C) 2017 Adobe
 * %%
 * 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.
 * #L%
 */
package com.adobe.acs.commons.mcp.form.workflow;

import com.adobe.acs.commons.mcp.form.SelectComponent;
import com.adobe.granite.workflow.WorkflowException;
import com.adobe.granite.workflow.WorkflowSession;
import com.adobe.granite.workflow.model.WorkflowModel;
import org.apache.sling.api.resource.ResourceResolver;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.util.Arrays;
import java.util.LinkedHashMap;
import java.util.Map;
import java.util.TreeMap;
import java.util.stream.Collectors;

/**
 * Selector that lists available Workflow Models in alphabetical order by Title. The selection value is the Workflow Model ID.
 */
public class WorkflowModelSelector extends SelectComponent {

    private static final Logger log = LoggerFactory.getLogger(WorkflowModelSelector.class);

    @Override
    public Map getOptions() {
        Map options = new TreeMap<>();

        final ResourceResolver resourceResolver = getHelper().getRequest().getResourceResolver();
        final WorkflowSession workflowSession = resourceResolver.adaptTo(WorkflowSession.class);

        try {
            options = Arrays.stream(workflowSession.getModels())
                            .collect(Collectors.toMap(
                                    WorkflowModel::getId,
                                    WorkflowModel::getTitle))
                            .entrySet()
                            .stream()
                            .sorted(Map.Entry.comparingByValue())
                            .collect(Collectors.toMap(
                                    e -> e.getKey(),
                                    e -> e.getValue(),
                                    (k, v)-> { throw new IllegalArgumentException("cannot merge"); },
                                    LinkedHashMap::new));

        } catch (WorkflowException e) {
            log.error("Could not collect workflow models", e);
        }

        return options;
    }
}