listbox.java

基于eclipse的工具开发代码

package com.cownew.uidesigner.components.listbox;

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

import org.eclipse.ui.views.properties.IPropertyDescriptor;

import com.cownew.ctk.common.EnvironmentUtils;
import com.cownew.ctk.common.StringUtils;
import com.cownew.eclipse.properties.MultiLineStringPropertyDescriptor;
import com.cownew.uidesigner.common.CodeGenUtils;
import com.cownew.uidesigner.common.ComponentUtils;
import com.cownew.uidesigner.model.Component;

public class ListBox extends Component
{
	private static final long serialVersionUID = 1L;

	public static final String ITEMS = "ITEMS";

	private static IPropertyDescriptor[] descriptors = new IPropertyDescriptor[] { new MultiLineStringPropertyDescriptor(
			ITEMS, "items") };

	private String items;

	public ListBox()
	{
		super();
		items = "";
	}

	public String getItems()
	{
		return items;
	}

	public void setItems(String items)
	{
		String oldValue = getItems();
		this.items = items;
		this.firePropertyChange(ITEMS, oldValue, items);
	}

	public IPropertyDescriptor[] getPropertyDescriptors()
	{
		IPropertyDescriptor[] sd = super.getPropertyDescriptors();
		return ComponentUtils.mergePropDesc(sd, descriptors);
	}

	public Object getPropertyValue(Object id)
	{
		Object v = super.getPropertyValue(id);
		if (v != null)
		{
			return v;
		}
		if (id.equals(ITEMS))
		{
			return getItems();
		}
		return null;

	}

	public void setPropertyValue(Object id, Object value)
	{
		super.setPropertyValue(id, value);
		if (id.equals(ITEMS))
		{
			setItems((String) value);
		}
	}

	public List<String> generateCode(String parentId)
	{
		List<String> list = new ArrayList<String>();

		StringBuffer listData = new StringBuffer();
		listData.append("new String[]{");
		String[] contents = getItems().split(
				EnvironmentUtils.getLineSeparator());

		for (int i = 0, n = contents.length; i < n; i++)
		{
			listData.append(StringUtils.doubleQuoted(contents[i]));
			if (i < contents.length - 1)
			{
				listData.append(",");
			}
		}
		listData.append("}");

		StringBuffer line1 = new StringBuffer();
		line1.append("JList ").append(getId()).append("= new JList(").append(
				listData).append(");");
		list.add(line1.toString());

		StringBuffer line2 = new StringBuffer();
		line2.append(getId()).append(".setBounds(").append(
				CodeGenUtils.translateBounds(getBounds())).append(");");
		list.add(line2.toString());

		StringBuffer line3 = new StringBuffer();
		line3.append(parentId).append(".add(").append(getId()).append(");");
		list.add(line3.toString());

		return list;
	}

}