Eclipse RCP应用系统开发方法与实战

package cn.edu.jfcs.ui; import java.util.ArrayList; import java.util.Iterator; import java.util.List; import org.eclipse.core.runtime.IProgressMonitor; import org.eclipse.core.runtime.IStatus; import org.eclipse.core.runtime.Status; import org.eclipse.core.runtime.jobs.IJobChangeEvent; import org.eclipse.core.runtime.jobs.Job; import org.eclipse.core.runtime.jobs.JobChangeAdapter; import org.eclipse.jface.action.Action; import org.eclipse.jface.action.IToolBarManager; import org.eclipse.jface.dialogs.MessageDialog; import org.eclipse.jface.viewers.CellEditor; import org.eclipse.jface.viewers.ISelection; import org.eclipse.jface.viewers.TextCellEditor; import org.eclipse.jface.viewers.TreeViewer; import org.eclipse.swt.SWT; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Table; import org.eclipse.swt.widgets.Tree; import org.eclipse.swt.widgets.TreeColumn; import org.eclipse.ui.ISelectionListener; import org.eclipse.ui.IViewPart; import org.eclipse.ui.IWorkbenchPart; import org.eclipse.ui.PlatformUI; import org.eclipse.ui.help.IWorkbenchHelpSystem; import org.eclipse.ui.part.ViewPart; import org.eclipse.ui.plugin.AbstractUIPlugin; import org.hibernate.Query; import org.hibernate.Session; import org.hibernate.Transaction; import cn.edu.jfcs.model.Course; import cn.edu.jfcs.model.CourseTreeChildren; import cn.edu.jfcs.model.CourseTreeParent; import cn.edu.jfcs.model.YearTeachUnit; import cn.edu.jfcs.sys.HibernateSessionFactory; import cn.edu.jfcs.sys.IAppConstants; import cn.edu.jfcs.sys.IImageKey; import cn.edu.jfcs.sys.SetControlEnabled; import cn.edu.jfcs.sys.SetTableColColorListener; import cn.edu.jfcs.sys.YearManager; public class TeachUnitClass extends ViewPart implements ISelectionListener { private TreeViewer treeViewer; private Action saveAction, calcAction, closeTreeAction, openTreeAction; // 表格的列名，同时也作为编辑器的属性名 // 课程名称 public static final String COURSENAME = "coursename"; // 学期 public static final String TERM = "term"; // 学时数 public static final String N2J = "n2j"; // 学生数 public static final String NJ = "nj"; // 班级名 public static final String CLASSNAME = "classname"; // 学生层次系数 public static final String R1J = "r1j"; // 课程/专业系数 public static final String R2J = "r2j"; // 课程质量系数 public static final String R3J = "r3j"; // 作为treeViewer的ColumnProperties属性，列的别名 public static final String[] PROPERTIES = { COURSENAME, TERM, N2J, NJ, CLASSNAME, R1J, R2J, R3J }; public TeachUnitClass() { super(); } public void createPartControl(Composite parent) { createTreeViewer(parent); createActions(); createToolbarButtons(); setHelpContextID(); // 监听TeachUnitView视图的SelectionProvider，以便其发生改变时激活selectionChanged PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage() .addSelectionListener(this); } // 创建treeViewer内容 private void createTreeViewer(Composite parent) { treeViewer = new TreeViewer(parent, SWT.BORDER | SWT.V_SCROLL | SWT.FULL_SELECTION); treeViewer.setUseHashlookup(true); treeViewer.setContentProvider(new TeachUnitClassContentProvider()); treeViewer.setLabelProvider(new TeachUnitClassLabelProvider()); // 创建表头列 final Tree tree = treeViewer.getTree(); tree.setLayoutData(new GridData(GridData.FILL_BOTH)); final TreeColumn tbcl1 = new TreeColumn(tree, SWT.LEFT); tbcl1.setText("课程名称"); tbcl1.setWidth(175); final TreeColumn tbcl2 = new TreeColumn(tree, SWT.CENTER); tbcl2.setText("学期"); tbcl2.setWidth(40); final TreeColumn tbcl3 = new TreeColumn(tree, SWT.CENTER); tbcl3.setText("学时"); tbcl3.setWidth(40); final TreeColumn tbcl4 = new TreeColumn(tree, SWT.CENTER); tbcl4.setText("学生数"); tbcl4.setWidth(52); final TreeColumn tbcl5 = new TreeColumn(tree, SWT.CENTER); tbcl5.setText("班级"); tbcl5.setWidth(112); final TreeColumn tbcl6 = new TreeColumn(tree, SWT.CENTER); tbcl6.setText("层次"); tbcl6.setWidth(40); final TreeColumn tbcl7 = new TreeColumn(tree, SWT.CENTER); tbcl7.setText("课程/专业"); tbcl7.setWidth(70); final TreeColumn tbcl8 = new TreeColumn(tree, SWT.CENTER); tbcl8.setText("质量"); tbcl8.setWidth(40); // 创建编辑器，前面5列为null，表示该列不允许修改 final CellEditor[] editors = new CellEditor[8]; editors[5] = new TextCellEditor(tree); editors[6] = new TextCellEditor(tree); editors[7] = new TextCellEditor(tree); treeViewer.setColumnProperties(PROPERTIES); treeViewer.setCellModifier(new TeachUnitClassCellModifier(treeViewer)); treeViewer.setCellEditors(editors); tree.setHeaderVisible(true); tree.setLinesVisible(true); treeViewer.expandToLevel(2); tree.setFocus(); // 记录改变时当前行突出显示 tree.addListener(SWT.EraseItem, new SetTableColColorListener(tree)); } // 创建Action对象 private void createActions() { saveAction = new Action("保存数据", AbstractUIPlugin .imageDescriptorFromPlugin(IAppConstants.APPLICATION_ID, IImageKey.SAVE_DATA)) { public void run() { saveData(); } }; calcAction = new Action("经费测算", AbstractUIPlugin .imageDescriptorFromPlugin(IAppConstants.APPLICATION_ID, IImageKey.CALC)) { public void run() { // 7.7节实现 } }; closeTreeAction = new Action("收缩数据", AbstractUIPlugin .imageDescriptorFromPlugin(IAppConstants.APPLICATION_ID, IImageKey.CLOSE_TREE)) { public void run() { treeViewer.collapseAll(); } }; openTreeAction = new Action("展开数据", AbstractUIPlugin .imageDescriptorFromPlugin(IAppConstants.APPLICATION_ID, IImageKey.OPEN_TREE)) { public void run() { treeViewer.expandAll(); } }; } // 创建导航按钮 private void createToolbarButtons() { IToolBarManager toolBar = getViewSite().getActionBars() .getToolBarManager(); toolBar.add(saveAction); toolBar.add(calcAction); toolBar.add(closeTreeAction); toolBar.add(openTreeAction); } // 监听教学单位视图教学单位选择状态的变化 public void selectionChanged(IWorkbenchPart part, ISelection selection) { if (!selection.isEmpty()) { saveAction.setEnabled(new SetControlEnabled().isEnabled(YearManager .getInstance().getCurYear())); IViewPart vp = getViewSite().getPage().findView( IAppConstants.TEACH_UNIT_NAME_VIEW_ID); // 获得数据 Table table = ((TeachUnitName) vp).getTableViewer().getTable(); YearTeachUnit ytu = (YearTeachUnit) table.getItem( table.getSelectionIndex()).getData(); treeViewer.setInput(getCourse(ytu.getTeachunit().getUnitid(), YearManager.getInstance().getCurYear())); // 设置标题栏教学单位名称 setPartName(getConfigurationElement().getAttribute("name") .toString() + "---" + ytu.getTeachunit().getUnitname()); treeViewer.expandToLevel(2); } } // 获得数据 private List getCourse(String unitid, int year) { List<CourseTreeParent> list = new ArrayList<CourseTreeParent>(); Session session = HibernateSessionFactory .getSession("hibernate_derby.cfg.xml"); // 获得课程明细数据 Query query = session .getNamedQuery("cn.edu.jfcs.ui.TeachUnitClass.getCourse"); query.setInteger(0, year); query.setString(1, unitid); int oldType = -1, curType = 0; CourseTreeParent ctp = null; for (Iterator iter = query.iterate(); iter.hasNext();) { Course course = (Course) iter.next(); curType = Integer.parseInt(course.getCoursetype()); String nodeName = curType == 1 ? "专业课明细" : "公共课明细"; if