org.activiti.explorer.ui.flow.ProcessDefinitionInfoComponent.java Source code

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Here is the source code for org.activiti.explorer.ui.flow.ProcessDefinitionInfoComponent.java

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/* 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.activiti.explorer.ui.flow;

import org.activiti.engine.ProcessEngines;
import org.activiti.engine.RepositoryService;
import org.activiti.engine.repository.Deployment;
import org.activiti.engine.repository.ProcessDefinition;
import org.activiti.explorer.ExplorerApp;
import org.activiti.explorer.I18nManager;
import org.activiti.explorer.Messages;
import org.activiti.explorer.ui.ExplorerLayout;

import com.vaadin.terminal.StreamResource;
import com.vaadin.ui.ComponentContainer;
import com.vaadin.ui.Embedded;
import com.vaadin.ui.HorizontalLayout;
import com.vaadin.ui.Label;
import com.vaadin.ui.VerticalLayout;

/**
 * @author 'Frederik Heremans'
 */
public class ProcessDefinitionInfoComponent extends VerticalLayout {

    private static final long serialVersionUID = -3523189433414901853L;

    // Services
    protected RepositoryService repositoryService;
    protected I18nManager i18nManager;

    // Members
    protected ProcessDefinition processDefinition;
    protected Deployment deployment;

    // UI
    protected HorizontalLayout timeDetails;
    protected VerticalLayout processImageContainer;

    public ProcessDefinitionInfoComponent(ProcessDefinition processDefinition, Deployment deployment) {
        super();
        this.repositoryService = ProcessEngines.getDefaultProcessEngine().getRepositoryService();
        this.i18nManager = ExplorerApp.get().getI18nManager();

        this.processDefinition = processDefinition;
        this.deployment = deployment;

        addStyleName(ExplorerLayout.STYLE_DETAIL_BLOCK);

        initImage();
    }

    protected void initImage() {
        VerticalLayout processImageContainer = new VerticalLayout();

        Label processTitle = new Label(i18nManager.getMessage(Messages.FLOW_HEADER_DIAGRAM));
        processTitle.addStyleName(ExplorerLayout.STYLE_H3);
        processImageContainer.addComponent(processTitle);

        if (processDefinition.getDiagramResourceName() != null) {
            StreamResource diagram = new ProcessDefinitionImageStreamResourceBuilder()
                    .buildStreamResource(processDefinition, repositoryService);

            Embedded embedded = new Embedded("", diagram);
            embedded.setType(Embedded.TYPE_IMAGE);
            processImageContainer.addComponent(embedded);
        } else {
            Label noImageAvailable = new Label(i18nManager.getMessage(Messages.FLOW_NO_DIAGRAM));
            processImageContainer.addComponent(noImageAvailable);
        }
        addComponent(processImageContainer);
    }

    protected void addEmptySpace(ComponentContainer container) {
        Label emptySpace = new Label(" ", Label.CONTENT_XHTML);
        emptySpace.setSizeUndefined();
        container.addComponent(emptySpace);
    }

}