eclipse RCP开发 table相关的操作

插件开发时，表是用的比较多的控件之一，但SWT提供的表只能提供最简单的表。

本文通过具体的例子，对于表的每一列加自定义控件以及对于表的一些删除，增加行操作进行说明。

表的单元格里加自定义控件在http://blog.csdn.net/jdzms23/article/details/7248444里有说明，

但用cellEditor实现时，有一点不爽的地方就是必须单击此单元格后，控件才会显示出来，不知这种方式能不能把控件一直显示，求高人指点。

这里主要用tableEditor方式。

import java.util.ArrayList;
import java.util.Hashtable;
import java.util.List;

import org.eclipse.jface.window.ApplicationWindow;
import org.eclipse.swt.SWT;
import org.eclipse.swt.custom.TableEditor;
import org.eclipse.swt.events.MouseEvent;
import org.eclipse.swt.events.MouseListener;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.widgets.Combo;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Group;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Table;
import org.eclipse.swt.widgets.TableColumn;
import org.eclipse.swt.widgets.TableItem;
import org.eclipse.swt.widgets.Text;

public class TestTableView extends ApplicationWindow {
private Table table;

private String[][] contents = {{"", "张三", "男", "未婚"},{"", "李四", "女", "已婚"},{"", "王五", "女", "未婚"}};

private Hashtable<TableItem, TableItemControls> tableControls = new
Hashtable<TableItem, TestTableView.TableItemControls>();
/**
* Create the application window.
*/
public TestTableView() {
super(null);
}

/**
* Create contents of the application window.
* @param parent
*/
@Override
protected Control createContents(Composite parent) {
Composite container = new Composite(parent, SWT.NONE);
{
Group group = new Group(container, SWT.NONE);
group.setText("表");
group.setBounds(10, 10, 481, 238);

table = new Table(group, SWT.BORDER | SWT.FULL_SELECTION | SWT.CHECK);
table.setBounds(10, 20, 461, 208);
table.setHeaderVisible(true);
table.setLinesVisible(true);
{
TableColumn tableColumn = new TableColumn(table, SWT.NONE);
tableColumn.setWidth(20);
}
{
TableColumn tableColumn = new TableColumn(table, SWT.NONE);
tableColumn.setWidth(104);
tableColumn.setText("名");
}
{
TableColumn tableColumn = new TableColumn(table, SWT.NONE);
tableColumn.setWidth(110);
tableColumn.setText("性别");
}
{
TableColumn tableColumn = new TableColumn(table, SWT.NONE);
tableColumn.setWidth(100);
tableColumn.setText("婚否");
}

}

for (String[] content:contents) {
TableItem item = new TableItem(table, SWT.NONE);
item.setText(content);
}
createCells(table);
{
Button button = new Button(container, SWT.PUSH);
button.setBounds(497, 41, 72, 22);
button.setText("追加");
button.addMouseListener(new MouseListener() {

@Override
public void mouseUp(MouseEvent arg0) {
TableItem item = new TableItem(table, SWT.NONE);
item.setText(contents[0]);
//创建一个item的控件
createOneItemCells(item);
}

@Override
public void mouseDown(MouseEvent arg0) {
// TODO Auto-generated method stub

}

@Override
public void mouseDoubleClick(MouseEvent arg0) {
// TODO Auto-generated method stub

}
});
}
{
Button button = new Button(container, SWT.PUSH);
button.setBounds(497, 98, 72, 22);
button.setText("删除");
button.addMouseListener(new MouseListener() {
@Override
public void mouseUp(MouseEvent arg0) {
//储存删除索引的list
List<Integer> indexs = new ArrayList<Integer>();
for (int i = 0; i < table.getItemCount(); i++) {
TableItem item = table.getItem(i);

if (item.getChecked()) {
TableItemControls controls = tableControls.get(item);
if (controls != null) {
controls.dispose();
tableControls.remove(item);
}
indexs.add(i);
}
}
int idx[] = new int[indexs.size()];
for(int i=0;i<indexs.size() ; i++){
idx[i] = indexs.get(i);
System.out.println("idx[i]" + idx[i]);
}

//删除对应index的表的item
table.remove(idx);
table.pack();
//表大小还原
table.setBounds(10, 20, 461, 208);
}

@Override
public void mouseDown(MouseEvent arg0) {
// TODO Auto-generated method stub

}

@Override
public void mouseDoubleClick(MouseEvent arg0) {
// TODO Auto-generated method stub

}
});
}

return container;
}

private void createCells(Table table) {
for (int i = 0; i < table.getItemCount(); i++) {
createOneItemCells(table.getItem(i));
}
}

private void createOneItemCells(TableItem item) {
TableEditor nameEditor = new TableEditor(table);
//名字的控件
Text name = new Text(table, SWT.NONE);
name.setText(item.getText(NAME_INDEX));
nameEditor.grabHorizontal = true;
nameEditor.setEditor(name, item, NAME_INDEX);
//性别的控件
TableEditor sexTableEditor = new TableEditor(table);
int sexIndex = findElement(SEXS, item.getText(SEX_INDEX));
Combo sexCombo = new Combo(table, SWT.DROP_DOWN | SWT.READ_ONLY);
for (String sex : SEXS) {
sexCombo.add(sex);

}
sexCombo.select(sexIndex);
sexTableEditor.grabHorizontal = true;
sexTableEditor.setEditor(sexCombo, item, SEX_INDEX);
//婚否的控件
TableEditor marryTableEditor = new TableEditor(table);
Button marryButton = new Button(table, SWT.CHECK);
if (item.getText(MARRY_INDEX).equals("已婚")) {
marryButton.setSelection(true);
} else {
marryButton.setSelection(false);
}

marryTableEditor.grabHorizontal = true;
marryTableEditor.setEditor(marryButton, item, MARRY_INDEX);

TableItemControls tableItemControls = new TableItemControls(name, sexCombo, marryButton,
nameEditor, sexTableEditor, marryTableEditor);

tableControls.put(item, tableItemControls);

}

private int findElement(String[] elements, String target) {
for (int i = 0; i < elements.length; i++) {
if(elements[i].equals(target)) {
return i;
}
}
return -1;
}

/**
* Launch the application.
* @param args
*/
public static void main(String args[]) {
try {
TestTableView window = new TestTableView();
window.setBlockOnOpen(true);
window.open();
Display.getCurrent().dispose();
} catch (Exception e) {
e.printStackTrace();
}
}

class TableItemControls {
Text nameText;
Combo sexCombo;
Button marryButton;
TableEditor nameEditor;
TableEditor sexEditor;
TableEditor marryEditor;

public TableItemControls(Text nameText, Combo sexCombo, Button marryButton,
TableEditor nameEditor, TableEditor sexEditor, TableEditor marryEditor
) {
this.nameText = nameText;
this.sexCombo = sexCombo;
this.marryButton = marryButton;
this.nameEditor = nameEditor;
this.sexEditor = sexEditor;
this.marryEditor = marryEditor;
}

public void dispose() {
nameText.dispose();
sexCombo.dispose();
marryButton.dispose();
}
}

/**
* Configure the shell.
* @param newShell
*/
@Override
protected void configureShell(Shell newShell) {
super.configureShell(newShell);
newShell.setText("表操作相关");
}

/**
* Return the initial size of the window.
*/
@Override
protected Point getInitialSize() {
return new Point(604, 379);
}

private static final int NAME_INDEX = 1;
private static final int SEX_INDEX = 2;
private static final int MARRY_INDEX = 3;
private static final int CHANCE_INDEX = 4;

private static final String[] SEXS = {"男", "女"};
}

运行效果如下图: