tableviewercopy2clipboardaction.java

mywork是rcp开发的很好的例子

package net.sf.component;

import org.eclipse.jface.action.Action;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.ITableLabelProvider;
import org.eclipse.jface.viewers.TableViewer;
import org.eclipse.swt.SWTError;
import org.eclipse.swt.dnd.Clipboard;
import org.eclipse.swt.dnd.DND;
import org.eclipse.swt.dnd.TextTransfer;
import org.eclipse.swt.dnd.Transfer;
import org.eclipse.swt.widgets.TableColumn;

/**
 * 将数据拷贝到剪贴板上
 * @author hlstudio
 *
 */
public class TableViewerCopy2ClipboardAction extends Action {

	private TableViewer tableViewer;

	private Clipboard clipboard;

	public TableViewerCopy2ClipboardAction(TableViewer tableViewer) {
		super("复制");
		this.tableViewer = tableViewer;
		this.clipboard = new Clipboard(tableViewer.getControl().getDisplay());
	}

	@Override
	public void run() {
		IStructuredSelection selection = (IStructuredSelection) tableViewer
				.getSelection();
		if (selection.isEmpty())
			return;
		//组字符串
		StringBuffer sb=new StringBuffer();
		for(TableColumn tc:tableViewer.getTable().getColumns())
			sb.append(tc.getText()).append("\t");
		sb.deleteCharAt(sb.length()-1);
		sb.append("\n");
		ITableLabelProvider labelProvider=(ITableLabelProvider) tableViewer.getLabelProvider();
		for(Object o:selection.toList()){
			for(int i=0;i<tableViewer.getTable().getColumnCount();i++)
				sb.append(labelProvider.getColumnText(o, i)).append("\t");
			sb.deleteCharAt(sb.length()-1);
			sb.append("\n");
		}
		sb.deleteCharAt(sb.length()-1);
		setClipboard(sb.toString());
	}

	private void setClipboard(String text) {
		try {
			Object[] data = new Object[] { text };
			Transfer[] transferTypes = new Transfer[] { TextTransfer
					.getInstance() };
			clipboard.setContents(data, transferTypes);
		} catch (SWTError e) {
			if (e.code != DND.ERROR_CANNOT_SET_CLIPBOARD) {
				throw e;
			}
			if (MessageDialog.openQuestion(tableViewer.getControl().getShell(),
					"拷贝错误", "向剪贴板拷贝数据错误，是否重试")) {
				setClipboard(text);
			}
		}
	}
}