Java tutorial
/** * This file is part of mycollab-web. * * mycollab-web is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * mycollab-web is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with mycollab-web. If not, see <http://www.gnu.org/licenses/>. */ package com.esofthead.mycollab.module.project.view.task; import java.util.HashSet; import java.util.Set; import com.esofthead.mycollab.common.i18n.GenericI18Enum; import com.esofthead.mycollab.core.arguments.NumberSearchField; import com.esofthead.mycollab.core.utils.DateTimeUtils; import com.esofthead.mycollab.eventmanager.EventBusFactory; import com.esofthead.mycollab.module.project.CurrentProjectVariables; import com.esofthead.mycollab.module.project.domain.SimpleTaskList; import com.esofthead.mycollab.module.project.domain.criteria.TaskListSearchCriteria; import com.esofthead.mycollab.module.project.events.TaskListEvent; import com.esofthead.mycollab.module.project.service.ProjectTaskListService; import com.esofthead.mycollab.spring.ApplicationContextUtil; import com.esofthead.mycollab.vaadin.AppContext; import com.esofthead.mycollab.vaadin.mvp.AbstractPageView; import com.esofthead.mycollab.vaadin.mvp.ViewComponent; import com.esofthead.mycollab.vaadin.mvp.ViewScope; import com.esofthead.mycollab.vaadin.ui.BeanList; import com.esofthead.mycollab.vaadin.ui.UIConstants; import com.vaadin.event.dd.DragAndDropEvent; import com.vaadin.event.dd.DropHandler; import com.vaadin.event.dd.acceptcriteria.AcceptCriterion; import com.vaadin.event.dd.acceptcriteria.Not; import com.vaadin.shared.ui.dd.VerticalDropLocation; import com.vaadin.ui.Alignment; import com.vaadin.ui.Button; import com.vaadin.ui.Component; import com.vaadin.ui.CssLayout; import com.vaadin.ui.HorizontalLayout; import com.vaadin.ui.Label; import fi.jasoft.dragdroplayouts.DDVerticalLayout; import fi.jasoft.dragdroplayouts.client.ui.LayoutDragMode; import fi.jasoft.dragdroplayouts.events.LayoutBoundTransferable; import fi.jasoft.dragdroplayouts.events.VerticalLocationIs; /** * * @author MyCollab Ltd. * @since 1.0 */ @ViewComponent(scope = ViewScope.PROTOTYPE) public class TaskGroupReorderViewImpl extends AbstractPageView implements TaskGroupReorderView { private static final long serialVersionUID = 1L; private BeanList<ProjectTaskListService, TaskListSearchCriteria, SimpleTaskList> taskLists; private Button saveOrderBtn; private final Set<SimpleTaskList> changeSet = new HashSet<SimpleTaskList>(); public TaskGroupReorderViewImpl() { super(); this.setMargin(true); constructHeader(); } private void constructHeader() { CssLayout headerWrapper = new CssLayout(); headerWrapper.setWidth("100%"); headerWrapper.addStyleName("taskgroup-header"); HorizontalLayout header = new HorizontalLayout(); header.setSpacing(true); header.setWidth("100%"); Label headerLbl = new Label("All Tasks"); headerLbl.setStyleName("h2"); header.addComponent(headerLbl); header.setComponentAlignment(headerLbl, Alignment.MIDDLE_LEFT); header.setExpandRatio(headerLbl, 1.0f); Button backToListBtn = new Button("Back to dashboard", new Button.ClickListener() { private static final long serialVersionUID = 1L; @Override public void buttonClick(Button.ClickEvent event) { EventBusFactory.getInstance().post(new TaskListEvent.GotoTaskListScreen(this, null)); } }); backToListBtn.setStyleName(UIConstants.THEME_GREEN_LINK); header.addComponent(backToListBtn); header.setComponentAlignment(backToListBtn, Alignment.MIDDLE_RIGHT); saveOrderBtn = new Button(AppContext.getMessage(GenericI18Enum.BUTTON_SAVE), new Button.ClickListener() { private static final long serialVersionUID = 1L; @Override public void buttonClick(Button.ClickEvent event) { EventBusFactory.getInstance().post(new TaskListEvent.SaveReoderTaskList(event, changeSet)); } }); saveOrderBtn.setStyleName(UIConstants.THEME_GREEN_LINK); header.addComponent(saveOrderBtn); header.setComponentAlignment(saveOrderBtn, Alignment.MIDDLE_RIGHT); headerWrapper.addComponent(header); this.addComponent(headerWrapper); final DDVerticalLayout ddLayout = new DDVerticalLayout(); ddLayout.addStyleName("taskgroup-reorder"); ddLayout.setComponentVerticalDropRatio(0.3f); ddLayout.setDragMode(LayoutDragMode.CLONE); ddLayout.setDropHandler(new DropHandler() { private static final long serialVersionUID = 1L; @Override public AcceptCriterion getAcceptCriterion() { return new Not(VerticalLocationIs.MIDDLE); } @Override public void drop(DragAndDropEvent event) { LayoutBoundTransferable transferable = (LayoutBoundTransferable) event.getTransferable(); DDVerticalLayout.VerticalLayoutTargetDetails details = (DDVerticalLayout.VerticalLayoutTargetDetails) event .getTargetDetails(); TaskListComponent comp = (TaskListComponent) transferable.getComponent(); int currentIndex = ddLayout.getComponentIndex(comp); int newIndex = details.getOverIndex(); ddLayout.removeComponent(comp); if (currentIndex > newIndex && details.getDropLocation() == VerticalDropLocation.BOTTOM) { newIndex++; } SimpleTaskList dropTaskList = comp.getTaskList(); dropTaskList.setGroupindex(newIndex); changeSet.add(dropTaskList); ddLayout.addComponent(comp, newIndex); // change affected task list items for (int i = 0; i < ddLayout.getComponentCount(); i++) { TaskListComponent affectedComp = (TaskListComponent) ddLayout.getComponent(i); SimpleTaskList affectedTaskList = affectedComp.getTaskList(); affectedTaskList.setGroupindex(i); changeSet.add(affectedTaskList); } } }); taskLists = new BeanList<ProjectTaskListService, TaskListSearchCriteria, SimpleTaskList>(null, ApplicationContextUtil.getSpringBean(ProjectTaskListService.class), TaskListRowDisplayHandler.class, ddLayout); this.addComponent(taskLists); } @Override public void displayTaskLists() { TaskListSearchCriteria criteria = new TaskListSearchCriteria(); criteria.setProjectId(new NumberSearchField(CurrentProjectVariables.getProjectId())); taskLists.setSearchCriteria(criteria); } public static class TaskListRowDisplayHandler extends BeanList.RowDisplayHandler<SimpleTaskList> { private static final long serialVersionUID = 1L; @Override public Component generateRow(SimpleTaskList taskList, int rowIndex) { return new TaskListComponent(taskList); } } private static class TaskListComponent extends CssLayout { private static final long serialVersionUID = 1L; private final SimpleTaskList taskList; public TaskListComponent(SimpleTaskList taskList) { this.taskList = taskList; this.setStyleName("task-component"); this.setWidth("100%"); Label taskName = new Label(taskList.getName()); taskName.addStyleName("task-name"); if ("Closed".equals(taskList.getStatus())) { taskName.addStyleName(UIConstants.LINK_COMPLETED); } this.addComponent(taskName); Label taskCreatedTime = new Label("Last updated on " + DateTimeUtils.getPrettyDateValue(taskList.getLastupdatedtime(), AppContext.getUserLocale())); taskCreatedTime.setStyleName("created-time"); this.addComponent(taskCreatedTime); } public SimpleTaskList getTaskList() { return taskList; } } }