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: