part.java

j2me开发的1个简单的wap浏览器.程序框架还是不错的.包括对低级事件的处理.通信框架,标签的解析

/********************************************************************
 * 项目名称				：<b>j2me学习 J2me Wap Explorer</b>			<br/>
 * 
 * Copyright 2005-2006 Wuhua. All rights reserved </br>
 *
 * 本程序只用于学习目的，不能用于商业目的。如有需要请联系作者
 ********************************************************************/
package org.wuhua.wap.ui;

import javax.microedition.lcdui.Canvas;
import javax.microedition.lcdui.Display;
import javax.microedition.lcdui.Font;
import javax.microedition.lcdui.Graphics;

import org.wuhua.wap.ui.event.PartChangeListener;

 


/**
 * <b>类名：Part.java</b> </br> 编写日期: 2006-9-14 <br/> 程序功能描述： 所有窗口的部件<br/> Demo:
 * <br/> Bug: <br/>
 * 
 * 程序变更日期 ：<br/> 变更作者 ：<br/> 变更说明 ：<br/>
 * 
 * @author wuhua </br> <a href="mailto:[e-mail]">[e-mail]</a>
 */
public abstract class Part {

	protected final int X = 0;

	protected final int Y = 1;

	protected final int WIDTH = 2;

	protected final int HEIGHT = 3;

	/**
	 * 位置的显示
	 */
	protected int view[] = new int[4];

	/**
	 * 背景色
	 */
	protected int bgColor = 0x000000;

	/**
	 * 字体颜色
	 */
	protected int fontColor = 0xFFFFFF;

	protected int selectedIndex;

	protected Canvas container;
	
	protected String label;
	protected String text;
	  
	/** 每个Item都有自己的聚焦 **/
	protected boolean hasFocus;
	
	/**
	 * 行
	 */
	protected int row;
	
	protected int rowNum;
	
	/**
	 * 列
	 */
	protected int column;
	protected int columnNum;
	
	/**
	 * 每个Part的位置
	 */
	public final static String ALIGN_LEFT = "0";
	public final static String ALIGN_CENTER = "1";
	public final static String ALIGN_RIGHT = "2";
	
	protected String align = ALIGN_LEFT;
	

	protected PartChangeListener partChangeListener;
	
	/**
	 * URL
	 */
	protected String url;

	/**
	 * Display对象,用于显示高级UI,
	 * 不知道怎么样对这个对象进行解耦.
	 */
	protected static Display display;
	
	/**
	 * 是否是下一行, 默认是下一行
	 */
	private boolean isNextRow = true;
	
	public final String getUrl() {
		return url;
	}
	public static final void setDisplay(Display display) {
		 Part.display = display;
	}

	public Part(int x, int y, int widht, int height) {
		view[X] = x;
		view[Y] = y;
		view[WIDTH] = widht;
		view[HEIGHT] = height;
	}

	public void setStyle(int bgColor, int fontColor) {
		this.bgColor = bgColor;
		this.fontColor = fontColor;
	}

	/**
	 * 默认字体
	 */
	protected Font font = Font.getFont(Font.FACE_SYSTEM, Font.STYLE_PLAIN,
			Font.SIZE_SMALL);

	/**
	 * 资料实现绘制方法
	 * 
	 * @param g
	 */
	public abstract void paint(Graphics g);

	/**
	 * 事件
	 * 
	 * @param keyCode
	 */
	public abstract void onClick(int keyCode);

	public int getSelectIndex() {
	 
		return selectedIndex;
	}

	public void setSelectIndex(int selectIndex) {
		this.selectedIndex = selectIndex;
	}

	/**
	 * 改变部件的位置
	 */
	public void changePosition(int x, int y, int width, int height){
		view[X] = x;
		view[Y] = y;
		view[WIDTH] = width;
		view[HEIGHT] = height;	
	}

	public void setContainer(Canvas container) {
		this.container = container;
	}
	
	/**
	 * 聚焦
	 * @param hasFocus
	 */
	public void setHasFocus(boolean hasFocus){
		this.hasFocus = hasFocus;	 
	}
	
	public void setPartChangeListener(PartChangeListener partChangeListener) {
		this.partChangeListener = partChangeListener;
	}

	public int[] getView() {
		return view;
	}

	public final Canvas getContainer() {
		return container;
	}
	public final String getText() {
		return text;
	}

	public final void setText(String text) {
		this.text = text;
	}
	
	/**
	 * 动态的获取UI的高度。
	 * @return
	 */
	public abstract int getHeight();

	/**
	 * 动态的获取UI的宽度。
	 * @return
	 */
	public abstract int getWidth();

	public final int getColumn() {
		return column;
	}

	public final void setColumn(int column) {
		this.column = column;
	}

	public final int getColumnNum() {
		return columnNum;
	}

	public final void setColumnNum(int columnNum) {
		this.columnNum = columnNum;
	}

	public final int getRow() {
		return row;
	}

	public final void setRow(int row) {
		this.row = row;
	}

	public final int getRowNum() {
		return rowNum;
	}

	public final void setRowNum(int rowNum) {
		this.rowNum = rowNum;
	}

	public final boolean isNextRow() {
		return isNextRow;
	}

	public final void setNextRow(boolean isNextRow) {
		this.isNextRow = isNextRow;
	}
	 
}