?package ui.unit;// Download by http://www.codefans.netimport javax.microedition.lcdui.Canvas;import javax.microedition.lcdui.Command;import javax.microedition.lcdui.CustomItem;import javax.microedition.lcdui.Display;import javax.microedition.lcdui.Font;import javax.microedition.lcdui.Graphics;import javax.microedition.lcdui.Item;import javax.microedition.lcdui.ItemCommandListener;import clasAn.core.GUIInfo;import ui.TextInput;/** *  * @version 2.0 */public class CourseItem extends CustomItem implements ItemCommandListener,		Runnable {	private static final Command CMD_EDIT = new Command(GUIInfo.COMMAND_EDIT, Command.ITEM, 1);	private static final int UPPER = 0;	private static final int IN = 1;	private static final int LOWER = 2;	// private static final String[8]={"第一節","第二節","第二節"}	private Display display;	private int maxSize = 4;	private Font font;	private int fontHeight;	private int width;	private String time;	private String content = "空";	private String rollingContent;	private int location = UPPER;	private int frameDelay = 1000;	boolean sleeping = true;	private Thread t = null;	private boolean isEdited = false;	// Traversal stuff	// indicating support of horizontal traversal internal to the CustomItem	boolean horz;	// indicating support for vertical traversal internal to the CustomItem.	boolean vert;	public CourseItem(String title, String time, String content, int maxSize,			Display d) {		super(title);		this.display = d;		this.time = time;		this.content = content;		this.maxSize = this.maxSize <= maxSize ? maxSize : this.maxSize;		this.rollingContent = contentAddBlank();		font = Font.getDefaultFont();		fontHeight = font.getHeight();		width = font.charWidth('我') * this.maxSize;		System.out.println(width);		setDefaultCommand(CMD_EDIT);		setItemCommandListener(this);		int interactionMode = getInteractionModes();// 獲得可實現的交互模式		horz = ((interactionMode & CustomItem.TRAVERSE_HORIZONTAL) != 0);		vert = ((interactionMode & CustomItem.TRAVERSE_VERTICAL) != 0);	}	protected int getMinContentHeight() {		return fontHeight;	}	protected int getMinContentWidth() {		return font.stringWidth(this.getLabel()) + 3;	}	protected int getPrefContentHeight(int width) {		return fontHeight * 2 + 2;	}	// 獲得首選寬度	protected int getPrefContentWidth(int height) {		return this.width + 3;	}	private String rollString(String s, int offset) {		String tmpsString;		tmpsString = s.substring(offset, s.length());		System.out.println(tmpsString				+ s.substring(s.length() - tmpsString.length(), s.length()));		return tmpsString + s.substring(0, offset);	}	// 畫圖	protected void paint(Graphics g, int w, int h) {		int dy = 0;		g.setColor(0xffffff);		g.fillRect(0, 0, width + 3, 2 * font.getHeight());		if (location != IN)			g.setColor(0x000000);		else			g.setColor(0x0000ff);		g.drawString(this.time, 2, dy, Graphics.TOP | Graphics.LEFT);		dy += font.getHeight();		g.drawString(this.rollingContent, 2, dy, Graphics.TOP | Graphics.LEFT);		g.setStrokeStyle(Graphics.DOTTED);		g.drawRect(0, 0, width + 2, dy + font.getHeight());	}	// 橫貫來回移動 //動作	protected boolean traverse(int dir, int viewportWidth, int viewportHeight,			int[] visRect_inout) {		if (font.stringWidth(content) > width)			this.start();		// 可以水平和縱向移動		if (horz && vert) {			switch (dir) {			case Canvas.DOWN:				if (location == UPPER) {// 如果選擇框在Table的上方					location = IN;// 位置為進入					repaint();				} else if (location == IN) {					location = LOWER;					return false;				}				break;			case Canvas.UP:				if (location == LOWER) {					location = IN;					repaint();				} else if (location == IN) {					location = UPPER;					return false;				}				break;			case Canvas.LEFT:				// System.out.println("內容左移");				if (font.stringWidth(content) > width)					this.rollingContent = this.rollString(rollingContent, 1);				repaint();				break;			case Canvas.RIGHT:				// System.out.println("內容 右移");			}		} else {// 不能水平和縱向移動			// In case of no Traversal at all: (horz|vert) == 0		}		// visRect_inout[0]=0;		// visRect_inout[1]=12;		// visRect_inout[2]=32;		// visRect_inout[3]=32;		return true;	}	public void start() {		this.sleeping = false;		t = new Thread(this);		t.start();	}	public void stop() {		sleeping = true;	}	public void run() {		// TODO Auto-generated method stub		while (!sleeping) {			try {				Thread.sleep(frameDelay);			} catch (InterruptedException e) {				// TODO Auto-generated catch block				e.printStackTrace();			}			if (!sleeping)				this.rollingContent = rollString(rollingContent, 1);			repaint();		}	}	protected void traverseOut() {		this.stop();		t = null;		this.rollingContent = contentAddBlank();		repaint();	}	// 設置表格內容	public void setContent(String text) {		//如果輸入的文本不為空		if (text.length() != 0) {			//如果輸入的文本與原課程內容不一致			if (!text.endsWith(this.content)) {				this.setEdited(true);				this.content = text;			}		} else {			this.setEdited(false);		}		rollingContent = contentAddBlank();		repaint();	}	// 獲得課程內容	public String getContent() {		return this.content;	}	private String contentAddBlank() {		return this.content + "         ";	}	// 獲取是否編輯過標志	public boolean isEdited() {		return this.isEdited;	}	// 設置是否編輯過標志	private void setEdited(boolean e) {		this.isEdited = e;	}	public void commandAction(Command c, Item i) {		if (c == CMD_EDIT) {			TextInput textInput = new TextInput(this.content, this, display);			display.setCurrent(textInput);		}	}}