CopySelectedItemsFromTreeViewAction.java

/**
 * Tencent is pleased to support the open source community by making APT available.
 * Copyright (C) 2014 THL A29 Limited, a Tencent company. All rights reserved.
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at
 * http://www.apache.org/licenses/LICENSE-2.0
 * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.
 */



package com.tencent.wstt.apt.statistics.actions;

import org.eclipse.jface.action.Action;
import org.eclipse.jface.viewers.TreeViewer;
import org.eclipse.swt.dnd.Clipboard;
import org.eclipse.swt.dnd.TextTransfer;
import org.eclipse.swt.dnd.Transfer;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Tree;
import org.eclipse.swt.widgets.TreeItem;

import com.tencent.wstt.apt.stubanalysis.data.SourceDataItem;

/**
* @Description 拷贝树形表格中选择的数据 
* @date 2013年11月10日 下午6:03:21 
*
 */
public class CopySelectedItemsFromTreeViewAction extends Action {
	private TreeViewer viewer;
	private Clipboard clipboard;
	
	public CopySelectedItemsFromTreeViewAction(TreeViewer viewer)
	{
		this.viewer = viewer;
	}
	
	@Override
	public void run() {
		
		StringBuffer sb = getContents();
		clipboard = new Clipboard(Display.getCurrent());
		Transfer[] transfers = new Transfer[] { TextTransfer
				.getInstance() };
		clipboard.setContents(new String[]{sb.toString()}, transfers);
	}
	
	
	private StringBuffer getContents()
	{
		StringBuffer sb = new StringBuffer();
		Tree tree = viewer.getTree();
		TreeItem[] selectedItems = tree.getSelection();
		int itemCount = selectedItems.length;
		int columnCount = tree.getColumnCount();
		
		for(int i = 0; i < itemCount; i++)
		{
			for(int j = 0; j < columnCount; j++)
			{
				sb.append(selectedItems[i].getText(j));
				sb.append(SourceDataItem.SPLIT);
			}
			sb.deleteCharAt(sb.length() - 1);
			sb.append("\r\n");
		}
		return sb;
	}
}