component.java

基于eclipse的工具开发代码

package com.cownew.uidesigner.model;

import java.util.List;

import org.eclipse.draw2d.geometry.Rectangle;
import org.eclipse.jface.viewers.ICellEditorValidator;
import org.eclipse.ui.views.properties.IPropertyDescriptor;
import org.eclipse.ui.views.properties.IPropertySource;
import org.eclipse.ui.views.properties.TextPropertyDescriptor;

import com.cownew.uidesigner.common.ComponentIdManager;

abstract public class Component extends Element implements IPropertySource
{
	static final long serialVersionUID = 4;

	public static final String BOUNDS = "BOUNDS";

	public static final String ID = "ID";

	private Rectangle bounds;

	private String id = "component";

	private Form form;

	public Form getForm()
	{
		return form;
	}

	public void setForm(Form form)
	{
		this.form = form;
	}

	public Rectangle getBounds()
	{
		return bounds;
	}


	public void setBounds(Rectangle bounds)
	{
		this.bounds = bounds;
		firePropertyChange(BOUNDS, null, bounds);
	}

	public void setId(String id)
	{
		if (this.id.equals(id))
		{
			return;
		}

		this.id = id;
		firePropertyChange(ID, null, id);
	}

	public String getId()
	{
		return id;
	}

	public Object getEditableValue()
	{
		return this;
	}

	public IPropertyDescriptor[] getPropertyDescriptors()
	{
		TextPropertyDescriptor idDesc = new TextPropertyDescriptor(ID, "Id");
		idDesc.setValidator(new ICellEditorValidator() {

			public String isValid(Object value)
			{
				String id = (String) value;
				ComponentIdManager idMgr = new ComponentIdManager(getForm());
				// 防止id重名
				if (idMgr.isIdConflicted(id, Component.this))
				{
					return "控件Id：" + id + "已经存在";
				}
				return null;
			}

		});
		IPropertyDescriptor[] descriptors = new IPropertyDescriptor[] { idDesc };

		return descriptors;
	}

	public Object getPropertyValue(Object id)
	{
		if (id.equals(ID))
		{
			return getId();
		}

		return null;
	}

	public boolean isPropertySet(Object id)
	{
		return true;
	}

	public void resetPropertyValue(Object id)
	{

	}

	public void setPropertyValue(Object id, Object value)
	{
		if (id == ID)
		{
			setId((String) value);
		}
	}

	/**
	 * 生成代码片段(生成代码的逻辑本不应该和模型混在一起，不过由于代码生成逻辑 目前不是很复杂，所以暂时这么做
	 * 
	 * @param parentId
	 *            父控件的id
	 * @return 代码段，List中每一个元素是一个类型为String的代码行
	 */
	public abstract List<String> generateCode(String parentId);

}