branchshape.java

来自「mywork是rcp开发的很好的例子」· Java 代码 · 共 106 行

package net.sf.freenote.mindmap.model;

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

import net.sf.freenote.FreeNoteConstants;
import net.sf.freenote.directedit.DirectEditable;
import net.sf.freenote.model.Connection;
import net.sf.freenote.model.Shape;
import net.sf.freenote.model.ShapesContainer;

import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.graphics.RGB;
import org.eclipse.ui.views.properties.ComboBoxPropertyDescriptor;
import org.eclipse.ui.views.properties.IPropertyDescriptor;
import org.eclipse.ui.views.properties.TextPropertyDescriptor;
/**
 * 分支主题
 * @author levin
 * @since 2008-2-11 下午08:18:11
 */
public class BranchShape extends Shape implements ShapesContainer,DirectEditable {
	private static final Image BRANCH_ICON = createImage("icons/branch.gif");
	private List<BranchShape> children;
	private String desc;
	private int style;	//布局样式
	public BranchShape() {
		super();
		setBackColor(new RGB(250,250,250));	//非常淡的底色
	}
	@Override
	public IPropertyDescriptor[] getPropertyDescriptors() {
		IPropertyDescriptor[] propertyDescriptors = super.getPropertyDescriptors();
		IPropertyDescriptor[] ret=new IPropertyDescriptor[propertyDescriptors.length+2];
		System.arraycopy(propertyDescriptors, 0, ret, 2, propertyDescriptors.length);
		ret[0]=new TextPropertyDescriptor(FreeNoteConstants.DESC_PROPERTY, FreeNoteConstants.DESC_PROPERTY);
		ret[1]=new ComboBoxPropertyDescriptor(FreeNoteConstants.STYLE_PROP, FreeNoteConstants.STYLE_PROP, new String[] {"默认","竖向","横向","星形" });
		return ret;
	}	
	@Override
	public Image getIcon() {
		return BRANCH_ICON;
	}
	@Override
	public boolean addChild(Shape s) {
		if(s != null  && s instanceof BranchShape){
			getChildren().add((BranchShape) s);
			//增加连线
			Connection conn=new Connection(this,s);
			conn.setTargetDecoration(0);
			//设置子shape的初始布局
			((BranchShape) s).setStyle(this.getStyle());
			firePropertyChange(FreeNoteConstants.CHILD_ADDED_PROP, null, s);
			return true;
		}
		return false;
	}
	@Override
	public List getChildren() {
		return children == null ? children =new ArrayList<BranchShape>():children;
	}
	@Override
	public boolean removeChild(Shape s) {
		if (s != null && getChildren().remove(s)) {
			firePropertyChange(FreeNoteConstants.CHILD_REMOVED_PROP, null, s);
			return true;
		}
		return false;
	}
	public String getDesc() {
		return desc==null?desc="":desc;
	}
	public void setDesc(String name) {
		this.desc = name;
		firePropertyChange(FreeNoteConstants.DESC_PROPERTY, null, name);
	}
	
	@Override
	public Object getPropertyValue(Object propertyId) {
		if(propertyId.equals(FreeNoteConstants.DESC_PROPERTY))
			return getDesc();
		if(propertyId.equals(FreeNoteConstants.STYLE_PROP))
			return getStyle();
		return super.getPropertyValue(propertyId);
	}

	@Override
	public void setPropertyValue(Object propertyId, Object value) {
		if(propertyId.equals(FreeNoteConstants.DESC_PROPERTY))
			setDesc(String.valueOf(value));
		if(propertyId.equals(FreeNoteConstants.STYLE_PROP))
			setStyle((Integer) value);
		super.setPropertyValue(propertyId, value);
	}
	public int getStyle() {
		return style==0?style=2:style; //缺省为横向排列
	}
	public void setStyle(int style) {
		this.style = style;
		firePropertyChange(FreeNoteConstants.STYLE_PROP, null, style);
	}
	public void setChildren(List<BranchShape> children) {
		this.children = children;
	}
}