SWT中treeView和tableTreeView的使用实例
涉及到的几个实体类：
基本节点接口：
public interface ITreeNode {
public String getName() ;
public void setName(String name);
public abstract List getChild() ;
public abstract void setChild(List child);
}
大学实体University，他的孩子节点是学院：
public class University implements ITreeNode{
public String name;
public List child = new ArrayList();
public List getChild() {
return child;
}
public void setChild(List child) {
this.child = child;
}
@Override
public String getName() {
// TODO Auto-generated method stub
return name;
}
@Override
public void setName(String name) {
// TODO Auto-generated method stub
this.name = name;
}
}
学院类 ， 他的孩子是班级：
public class Collage implements ITreeNode {
private String name;
private List child = new ArrayList();
@Override
public String getName() {
// TODO Auto-generated method stub
return name;
}
@Override
public void setName(String name) {
// TODO Auto-generated method stub
this.name = name;
}
@Override
public List getChild() {
// TODO Auto-generated method stub
return child;
}
@Override
public void setChild(List child) {
// TODO Auto-generated method stub
this.child = child;
}
}
班级类：
public class CustomClass implements ITreeNode{
private String name;
private List child = new ArrayList();
@Override
public String getName() {
// TODO Auto-generated method stub
return name;
}
@Override
public void setName(String name) {
// TODO Auto-generated method stub
this.name = name;
}
@Override
public List getChild() {
// TODO Auto-generated method stub
return null;
}
@Override
public void setChild(List child) {
// TODO Auto-generated method stub
this.child = child;
}
}
TreeView的contentProvider和labelProvider:
TreeViewerContentProvider
public class TreeViewerContentProvider implements ITreeContentProvider{
public TreeViewerContentProvider()
{
}
public Object [] getChildren(Object parentElement)
{
if (parentElement instanceof University){
// System.out.println(((University) parentElement).getName());
List childList = ((University) parentElement).getChild();
return childList.toArray();
}
if (parentElement instanceof Collage){
System.out.println(((Collage) parentElement).getName());
List childList = ((Collage) parentElement).getChild();
return childList.toArray();
}
return new Object[0];
}
public Object getParent(Object element)
{
return null;
}
public boolean hasChildren(Object element)
{
if (element instanceof University){
List childList = ((University) element).getChild();
if (childList.size() > 0)
return true;
else
return false;
}
if (element instanceof Collage){
List childList = ((Collage) element).getChild();
if (childList.size() > 0)
return true;
else
return false;
}
return false;
}
public Object[] getElements(Object inputElement)
{
if(inputElement instanceof List)
{
List list =(List)inputElement;
return list.toArray();
}
else
return new Object[]{inputElement};
}
public void dispose(){}
public void inputChanged(Viewer viewer,Object oldInput,Object newInput){
}
}
TreeViewerLabelProvider
public class TreeViewerLabelProvider implements ILabelProvider{
public TreeViewerLabelProvider(){
}
public Image getImage(Object element)
{
return null;
}
public String getText(Object element)
{
if (element instanceof University){
return ((University) element).getName();
}
if (element instanceof Collage){
return ((Collage) element).getName();
}
if (element instanceof CustomClass){
return ((CustomClass) element).getName();
}
return "";
}
public void addListener(ILabelProviderListener listener)
{
}
public void dispose()
{
}
public boolean isLabelProperty(Object element,String property)
{
return false;
}
public void removeListener(ILabelProviderListener listener)
{
}
}
tableTreeView的contentProvider和labelProvier
TableViewContentProvider
public class TableViewContentProvider implements ITreeContentProvider{
@Override
public void dispose() {
// TODO Auto-generated method stub
}
@Override
public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
// TODO Auto-generated method stub
}
@Override
public Object[] getElements(Object inputElement) {
// TODO Auto-generated method stub
if(inputElement instanceof List)
return ((List)inputElement).toArray();
else
return new Object[]{inputElement};
}
@Override
public Object[] getChildren(Object parentElement) {
// TODO Auto-generated method stub
if(parentElement instanceof University){
List list = new ArrayList();
list.addAll(((University) parentElement).getChild());
return list.toArray();
}
if(parentElement instanceof Collage) {
List list = new ArrayList();
list.addAll(((Collage) parentElement).getChild());
return list.toArray();
}
return new Object[0];
}
@Override
public Object getParent(Object element) {
// TODO Auto-generated method stub
return null;
}
@Override
public boolean hasChildren(Object element) {
if(element instanceof University)
{
if(((University) element).getChild().size() > 0)
return true;
return false;
}
if(element instanceof Collage){
if (((Collage) element).getChild().size() > 0)
return true;
return false;
}
return false;
}
}
TableViewLabelProvider
public class TableViewLabelProvider implements ITableLabelProvider {
@Override
public void addListener(ILabelProviderListener listener) {
// TODO Auto-generated method stub
}
@Override
public void dispose() {
// TODO Auto-generated method stub
}
@Override
public boolean isLabelProperty(Object element, String property) {
// TODO Auto-generated method stub
return false;
}
@Override
public void removeListener(ILabelProviderListener listener) {
// TODO Auto-generated method stub
}
@Override
public Image getColumnImage(Object element, int columnIndex) {
// TODO Auto-generated method stub
return null;
}
@Override
public String getColumnText(Object element, int columnIndex) {
if(element instanceof University)
{
switch (columnIndex) {
case 0:
return ((University) element).getName();
default:
return "";
}
}
if(element instanceof Collage)
{
switch (columnIndex) {
case 1:
return ((Collage) element).getName();
default:
return "";
}
}
if(element instanceof CustomClass){
if(columnIndex==2)
return ((CustomClass) element).getName();
else
return "";
}
return "";
}
}
产生数据的工厂：
public class DataFactory {
public static List getList(){
University ui = new University();
ui.setName("南京航空航天大学");
Collage infoCollage = new Collage();
infoCollage.setName("信息科学与技术学院");
Collage compuCollage = new Collage();
compuCollage.setName("计算机科学与技术学院");
ui.getChild().add(infoCollage);
ui.getChild().add(compuCollage);
CustomClass class201 = new CustomClass();
class201.setName("201班");
CustomClass class301 = new CustomClass();
class301.setName("301班");
CustomClass class401 = new CustomClass();
class401.setName("401班");
CustomClass class501 = new CustomClass();
class501.setName("501班");
infoCollage.getChild().add(class201);
infoCollage.getChild().add(class301);
compuCollage.getChild().add(class401);
compuCollage.getChild().add(class501);
List unverList = new ArrayList();
unverList.add(ui);
return unverList;
}
}
对话框类：
import java.util.ArrayList;
public class TableTreeDemoDlg extends Dialog {
protected Object result;
protected Shell shlSwt;
private List tableTreeViewInputList = new ArrayList();
/**
* Create the dialog.
* @param parent
* @param style
*/
public TableTreeDemoDlg(Shell parent, int style) {
super(parent, style);
setText("SWT Dialog");
}
/**
* Open the dialog.
* @return the result
*/
public Object open() {
createContents();
shlSwt.open();
shlSwt.layout();
Display display = getParent().getDisplay();
while (!shlSwt.isDisposed()) {
if (!display.readAndDispatch()) {
display.sleep();
}
}
return result;
}
/**
* Create contents of the dialog.
*/
private void createContents() {
shlSwt = new Shell(getParent(), SWT.CLOSE | SWT.RESIZE | SWT.TITLE | SWT.APPLICATION_MODAL);
shlSwt.setSize(727, 535);
shlSwt.setText("SWT\u6F14\u793A");
shlSwt.setLayout(null);
final TableTreeViewer tableTreeViewer = new TableTreeViewer(shlSwt, SWT.BORDER | SWT.FULL_SELECTION);
TableTree tableTreeView = tableTreeViewer.getTableTree();
tableTreeView.getTable().setLinesVisible(true);
tableTreeView.getTable().setHeaderVisible(true);
tableTreeView.setBounds(240, 10, 458, 421);
TableColumn tblclmnNewColumn = new TableColumn(tableTreeView.getTable(), SWT.CENTER);
tblclmnNewColumn.setWidth(90);
tblclmnNewColumn.setText("University");
TableColumn tblCollage = new TableColumn(tableTreeView.getTable(), SWT.CENTER);
tblCollage.setWidth(114);
tblCollage.setText("Collage");
TableColumn tblClass = new TableColumn(tableTreeView.getTable(), SWT.CENTER);
tblClass.setWidth(112);
tblClass.setText("Class");
TableColumn tblStuNo = new TableColumn(tableTreeView.getTable(), SWT.CENTER);
tblStuNo.setText("StuNo");
tblStuNo.setWidth(138);
final TreeViewer treeViewer = new TreeViewer(shlSwt, SWT.BORDER);
Tree treeView = treeViewer.getTree();
treeView.setBounds(10, 10, 211, 426);
Button btnNewButton = new Button(shlSwt, SWT.NONE);
btnNewButton.setBounds(64, 456, 72, 22);
btnNewButton.setText("New Button");
Button btnNewButton_1 = new Button(shlSwt, SWT.NONE);
btnNewButton_1.setBounds(538, 456, 72, 22);
btnNewButton_1.setText("New Button");
List dataList = DataFactory.getList();
tableTreeViewer.setContentProvider(new TableViewContentProvider());
tableTreeViewer.setLabelProvider(new TableViewLabelProvider());
tableTreeViewer.setInput(tableTreeViewInputList);
treeViewer.setContentProvider(new TreeViewerContentProvider());
treeViewer.setLabelProvider(new TreeViewerLabelProvider());
treeViewer.setInput(dataList);
treeViewer.getTree().addSelectionListener(new SelectionAdapter(){
public void widgetSelected(SelectionEvent e) {
TreeItem[] selected = treeViewer.getTree().getSelection();
Object obj = selected[0].getData();
tableTreeViewInputList.clear();
tableTreeViewInputList.add(obj);
tableTreeViewer.refresh();
}
}
);
}
}
