/* * %W% %E% * * Copyright (c) 2000-2003 Sun Microsystems, Inc. All rights reserved. * PROPRIETARY/CONFIDENTIAL * Use is subject to license terms */package customitem;import javax.microedition.lcdui.*;/** * * @version 2.0 */public class Table    extends CustomItem    implements ItemCommandListener {    private final static Command CMD_EDIT = new Command("Edit",                                                           Command.ITEM, 1);    private Display display;    private int rows = 5;    private int cols = 3;   //行 列    private int dx = 50;    private int dy = 20;    private final static int UPPER = 0;    private final static int IN = 1;    private final static int LOWER = 2;    private int location = UPPER;    private int currentX = 0;    private int currentY = 0;    private String[][] data = new String[rows][cols];   //畫圖的二維數組    // 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 Table(String title, Display d) {        super(title);        display = d;        setDefaultCommand(CMD_EDIT);        setItemCommandListener(this);        int interactionMode = getInteractionModes();        horz = ((interactionMode & CustomItem.TRAVERSE_HORIZONTAL) != 0);        vert = ((interactionMode & CustomItem.TRAVERSE_VERTICAL) != 0);    }    protected int getMinContentHeight() {        return (rows * dy) + 1;    }    protected int getMinContentWidth() {        return (cols * dx) + 1;    }    protected int getPrefContentHeight(int width) {        return (rows * dy) + 1;    }    protected int getPrefContentWidth(int height) {        return (cols * dx) + 1;    }    protected void paint(Graphics g, int w, int h) {        for (int i = 0; i <= rows; i++) {   //畫行            g.drawLine(0, i * dy, cols * dx, i * dy);        }        for (int i = 0; i <= cols; i++) {   //畫列            g.drawLine(i * dx, 0, i * dx, rows * dy);        }        int oldColor = g.getColor();        g.setColor(0x00D0D0D0);        g.fillRect((currentX * dx) + 1, (currentY * dy) + 1, dx - 1, dy - 1);        g.setColor(oldColor);        for (int i = 0; i < rows; i++) {            for (int j = 0; j < cols; j++) {                if (data[i][j] != null) {                    // store clipping properties                    int oldClipX = g.getClipX();                    int oldClipY = g.getClipY();                    int oldClipWidth = g.getClipWidth();                    int oldClipHeight = g.getClipHeight();                    g.setClip((j * dx) + 1, i * dy, dx - 1, dy - 1);                    g.drawString(data[i][j], (j * dx) + 2, ((i + 1) * dy) - 2,                                 Graphics.BOTTOM | Graphics.LEFT);                    // restore clipping properties                    g.setClip(oldClipX, oldClipY, oldClipWidth, oldClipHeight);                }            }        }    }    protected boolean traverse(int dir, int viewportWidth, int viewportHeight,                               int[] visRect_inout) {        if (horz && vert) {            switch (dir) {                case Canvas.DOWN:                    if (location == UPPER) {                        location = IN;                    } else {                        if (currentY < (rows - 1)) {                            currentY++;                            repaint(currentX * dx, (currentY - 1) * dy, dx, dy);                            repaint(currentX * dx, currentY * dy, dx, dy);                        } else {                            location = LOWER;                            return false;                        }                    }                    break;                case Canvas.UP:                    if (location == LOWER) {                        location = IN;                    } else {                        if (currentY > 0) {                            currentY--;                            repaint(currentX * dx, (currentY + 1) * dy, dx, dy);                            repaint(currentX * dx, currentY * dy, dx, dy);                        } else {                            location = UPPER;                            return false;                        }                    }                    break;                case Canvas.LEFT:                    if (currentX > 0) {                        currentX--;                        repaint((currentX + 1) * dx, currentY * dy, dx, dy);                        repaint(currentX * dx, currentY * dy, dx, dy);                    }                    break;                case Canvas.RIGHT:                    if (currentX < (cols - 1)) {                        currentX++;                        repaint((currentX - 1) * dx, currentY * dy, dx, dy);                        repaint(currentX * dx, currentY * dy, dx, dy);                    }            }        } else if (horz || vert) {            switch (dir) {                case Canvas.UP:                case Canvas.LEFT:                    if (location == LOWER) {                        location = IN;                    } else {                        if (currentX > 0) {                            currentX--;                            repaint((currentX + 1) * dx, currentY * dy, dx, dy);                            repaint(currentX * dx, currentY * dy, dx, dy);                        } else if (currentY > 0) {                            currentY--;                            repaint(currentX * dx, (currentY + 1) * dy, dx, dy);                            currentX = cols - 1;                            repaint(currentX * dx, currentY * dy, dx, dy);                        } else {                            location = UPPER;                            return false;                        }                    }                    break;                case Canvas.DOWN:                case Canvas.RIGHT:                    if (location == UPPER) {                        location = IN;                    } else {                        if (currentX < (cols - 1)) {                            currentX++;                            repaint((currentX - 1) * dx, currentY * dy, dx, dy);                            repaint(currentX * dx, currentY * dy, dx, dy);                        } else if (currentY < (rows - 1)) {                            currentY++;                            repaint(currentX * dx, (currentY - 1) * dy, dx, dy);                            currentX = 0;                            repaint(currentX * dx, currentY * dy, dx, dy);                        } else {                            location = LOWER;                            return false;                        }                    }            }        } else {            //In case of no Traversal at all: (horz|vert) == 0        }        visRect_inout[0] = currentX;        visRect_inout[1] = currentY;        visRect_inout[2] = dx;        visRect_inout[3] = dy;        return true;    }    public void setText(String text) {        data[currentY][currentX] = text;        repaint(currentY * dx, currentX * dy, dx, dy);    }    public void commandAction(Command c, Item i) {        if (c == CMD_EDIT) {            TextInput textInput = new TextInput(data[currentY][currentX], this,                                                display);            display.setCurrent(textInput);        }    }}