/* 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.task;
import java.util.List;
import org.activiti.engine.ProcessEngines;
import org.activiti.engine.TaskService;
import org.activiti.engine.task.Attachment;
import org.activiti.engine.task.Task;
import org.activiti.explorer.ExplorerApp;
import org.activiti.explorer.I18nManager;
import org.activiti.explorer.Messages;
import org.activiti.explorer.ui.Images;
import org.activiti.explorer.ui.content.AttachmentDetailPopupWindow;
import org.activiti.explorer.ui.content.AttachmentRenderer;
import org.activiti.explorer.ui.content.AttachmentRendererManager;
import org.activiti.explorer.ui.content.CreateAttachmentPopupWindow;
import org.activiti.explorer.ui.content.RelatedContentComponent;
import org.activiti.explorer.ui.custom.ConfirmationDialogPopupWindow;
import org.activiti.explorer.ui.event.ConfirmationEvent;
import org.activiti.explorer.ui.event.ConfirmationEventListener;
import org.activiti.explorer.ui.event.SubmitEvent;
import org.activiti.explorer.ui.event.SubmitEventListener;
import org.activiti.explorer.ui.mainlayout.ExplorerLayout;
import com.vaadin.data.Item;
import com.vaadin.event.MouseEvents.ClickEvent;
import com.vaadin.event.MouseEvents.ClickListener;
import com.vaadin.ui.Alignment;
import com.vaadin.ui.Button;
import com.vaadin.ui.Component;
import com.vaadin.ui.ComponentContainer;
import com.vaadin.ui.Embedded;
import com.vaadin.ui.HorizontalLayout;
import com.vaadin.ui.Label;
import com.vaadin.ui.Table;
import com.vaadin.ui.VerticalLayout;
import com.vaadin.ui.themes.Reindeer;
/**
* Component for showing related content of a task. Also allows adding, removing
* and opening related content.
*
* @author Frederik Heremans
* @author Joram Barrez
*/
public class TaskRelatedContentComponent extends VerticalLayout implements RelatedContentComponent {
private static final long serialVersionUID = 1L;
protected TaskService taskService;
protected I18nManager i18nManager;
protected AttachmentRendererManager attachmentRendererManager;
protected Task task;
protected VerticalLayout contentLayout;
protected Table table;
protected TaskDetailPanel taskDetailPanel;
protected Label noContentLabel;
public TaskRelatedContentComponent(Task task, TaskDetailPanel taskDetailPanel) {
this.taskService = ProcessEngines.getDefaultProcessEngine().getTaskService();
this.i18nManager = ExplorerApp.get().getI18nManager();
this.attachmentRendererManager = ExplorerApp.get().getAttachmentRendererManager();
this.task = task;
this.taskDetailPanel = taskDetailPanel;
addStyleName(ExplorerLayout.STYLE_DETAIL_BLOCK);
initActions();
initAttachmentTable();
}
public void showAttachmentDetail(Attachment attachment) {
// Show popup window with detail of attachment rendered in in
AttachmentDetailPopupWindow popup = new AttachmentDetailPopupWindow(attachment);
ExplorerApp.get().getViewManager().showPopupWindow(popup);
}
protected void initActions() {
HorizontalLayout actionsContainer = new HorizontalLayout();
actionsContainer.setSizeFull();
// Title
Label processTitle = new Label(i18nManager.getMessage(Messages.TASK_RELATED_CONTENT));
processTitle.addStyleName(ExplorerLayout.STYLE_H3);
processTitle.setSizeFull();
actionsContainer.addComponent(processTitle);
actionsContainer.setComponentAlignment(processTitle, Alignment.MIDDLE_LEFT);
actionsContainer.setExpandRatio(processTitle, 1.0f);
// Add content button
Button addRelatedContentButton = new Button();
addRelatedContentButton.addStyleName(ExplorerLayout.STYLE_ADD);
addRelatedContentButton.addListener(new com.vaadin.ui.Button.ClickListener() {
private static final long serialVersionUID = 1L;
public void buttonClick(com.vaadin.ui.Button.ClickEvent event) {
CreateAttachmentPopupWindow popup = new CreateAttachmentPopupWindow();
if (task.getProcessInstanceId() != null) {
popup.setProcessInstanceId(task.getProcessInstanceId());
} else {
popup.setTaskId(task.getId());
}
// Add listener to update attachments when added
popup.addListener(new SubmitEventListener() {
private static final long serialVersionUID = 1L;
@Override
protected void submitted(SubmitEvent event) {
taskDetailPanel.notifyRelatedContentChanged();
}
@Override
protected void cancelled(SubmitEvent event) {
// No attachment was added so updating UI isn't needed.
}
});
ExplorerApp.get().getViewManager().showPopupWindow(popup);
}
});
actionsContainer.addComponent(addRelatedContentButton);
actionsContainer.setComponentAlignment(processTitle, Alignment.MIDDLE_RIGHT);
addComponent(actionsContainer);
}
protected void initAttachmentTable() {
contentLayout = new VerticalLayout();
addComponent(contentLayout);
table = new Table();
table.setWidth(100, UNITS_PERCENTAGE);
table.addStyleName(ExplorerLayout.STYLE_RELATED_CONTENT_LIST);
// Invisible by default, only shown when attachments are present
table.setVisible(false);
table.setColumnHeaderMode(Table.COLUMN_HEADER_MODE_HIDDEN);
addContainerProperties();
// Get the related content for this task
refreshTaskAttachments();
contentLayout.addComponent(table);
}
protected void addContainerProperties() {
table.addContainerProperty("type", Embedded.class, null);
table.setColumnWidth("type", 16);
table.addContainerProperty("name", Component.class, null);
table.addContainerProperty("delete", Embedded.class, null);
table.setColumnWidth("delete", 16);
}
public void refreshTaskAttachments() {
table.removeAllItems();
if (noContentLabel != null) {
contentLayout.removeComponent(noContentLabel);
}
List<Attachment> attachments = null;
if (task.getProcessInstanceId() != null){
attachments = (taskService.getProcessInstanceAttachments(task.getProcessInstanceId()));
} else {
attachments = taskService.getTaskAttachments(task.getId());
}
if(attachments.size() > 0) {
addAttachmentsToTable(attachments);
} else {
table.setVisible(false);
noContentLabel = new Label(i18nManager.getMessage(Messages.TASK_NO_RELATED_CONTENT));
noContentLabel.addStyleName(Reindeer.LABEL_SMALL);
contentLayout.addComponent(noContentLabel);
}
}
protected void addAttachmentsToTable(List<Attachment> attachments) {
for (Attachment attachment : attachments) {
AttachmentRenderer renderer = attachmentRendererManager.getRenderer(attachment);
Item attachmentItem = table.addItem(attachment.getId());
attachmentItem.getItemProperty("name").setValue(renderer.getOverviewComponent(attachment, this));
attachmentItem.getItemProperty("type").setValue(new Embedded(null, renderer.getImage(attachment)));
Embedded deleteButton = new Embedded(null, Images.DELETE);
deleteButton.addStyleName(ExplorerLayout.STYLE_CLICKABLE);
deleteButton.addListener((ClickListener) new DeleteClickedListener(attachment));
attachmentItem.getItemProperty("delete").setValue(deleteButton);
}
if(table.getItemIds().size() > 0) {
table.setVisible(true);
}
table.setPageLength(table.size());
}
protected void addEmptySpace(ComponentContainer container) {
Label emptySpace = new Label(" ", Label.CONTENT_XHTML);
emptySpace.setSizeUndefined();
container.addComponent(emptySpace);
}
private class DeleteClickedListener extends ConfirmationEventListener implements ClickListener {
private static final long serialVersionUID = 1L;
private Attachment attachment;
public DeleteClickedListener(Attachment attachment) {
this.attachment = attachment;
}
public void click(ClickEvent event) {
ConfirmationDialogPopupWindow confirm = new ConfirmationDialogPopupWindow(
i18nManager.getMessage(Messages.RELATED_CONTENT_CONFIRM_DELETE, attachment.getName()));
confirm.addListener((ConfirmationEventListener)this);
confirm.showConfirmation();
}
@Override
protected void confirmed(ConfirmationEvent event) {
taskService.deleteAttachment(attachment.getId());
taskDetailPanel.notifyRelatedContentChanged();
}
@Override
protected void rejected(ConfirmationEvent event) {
// Nothing to do here
}
}
}