//package bushfighting;

import javax.microedition.lcdui.Image;
import javax.microedition.lcdui.Graphics;
import javax.microedition.lcdui.Canvas;
import com.nokia.mid.ui.FullCanvas;

//NetDataForm用于管理排行榜的上傳和下載的工作
public class NetDataForm extends FullCanvas
{
    public static final int STATE_MSGDISPLAY = 5; //其他情形，用于顯示基本信息，作用等同MsgForm
    private int mCurrentState; //當(dāng)前窗口的狀態(tài)
    protected Score mScore = null;
    private String mNickName, mPhone;
    protected String mTitle = ""; //消息框的標(biāo)題
    protected String mMessage = ""; //消息框的內(nèi)容
    protected String mRightBar, mLeftBar; //狀態(tài)欄顯示的信息
    protected int mCanvasWidth, mCanvasHeight; //屏幕的大小
    protected DisplayManager mDisplayManager = null;
    private Image mBufferImage = null; //雙緩沖的圖片
    private Graphics mBGraphics = null;
    private int mScrollIndex = 0; //為了支持滾動(dòng)而設(shè)置的，標(biāo)識(shí)當(dāng)前的開始行
    private boolean mIsNeedScrolled = false; //當(dāng)前的顯示是否需要滾動(dòng)

    public NetDataForm(DisplayManager manager, Score score, Image bufferImg)
    {
        mDisplayManager = manager;
        mCanvasWidth = getWidth();
        mCanvasHeight = getHeight();
        mScore = score;
        mBufferImage = bufferImg;
        mBGraphics = mBufferImage.getGraphics();
        mCurrentState = STATE_MSGDISPLAY;
    }

    //設(shè)置當(dāng)前的窗口狀態(tài)
    public void setState(int state)
    {
        if (state < 1 || state > 5)
            return; //防止一些不正確的狀態(tài)值
        mCurrentState = state;
        mIsNeedScrolled = false;
        mScrollIndex = 0; //重置當(dāng)前的滾動(dòng)行為0
    }

    //處理按鍵事件
    public void keyPressed(int keyCode)
    {
        if (keyCode == -6) { //右上角的按鍵
            back(); //返回上一級(jí)顯示
            return;
        }
        else {
            int action = getGameAction(keyCode);
            switch (action) {
                case DOWN:
                    if (mIsNeedScrolled == true) {
                        mScrollIndex = mScrollIndex + 1;
                        repaint(0, 0, mCanvasWidth, mCanvasHeight);
                    }
                    break;
                case UP:
                    if (mScrollIndex > 0) {
                        mScrollIndex = mScrollIndex - 1;
                        repaint(0, 0, mCanvasWidth, mCanvasHeight);
                    }
                    break;
            }
        }
    }

    public void showLocalRolls()
    {
        mScrollIndex = 0; //重置當(dāng)前的滾動(dòng)行為0
        mCurrentState = STATE_MSGDISPLAY;
        String[] nickNames = mScore.mNickNames;
        int[] scores = mScore.mRecordScores;
        StringBuffer strBuf = new StringBuffer(60);
        for (int i = 0; i < scores.length; i++) {
            strBuf.append("第");
            strBuf.append(i + 1);
            strBuf.append("名    ");
            strBuf.append(nickNames[i]);
            strBuf.append("    ");
            strBuf.append(scores[i]);
            if (i != scores.length - 1)
                strBuf.append("&");
        }
        set("本地排行榜", strBuf.toString());
    }

    //根據(jù)不同狀態(tài)繪制界面
    protected void paint(Graphics g)
    {
        clearScreen(g, HF.COLOR_WHITE);
        if (mCurrentState == STATE_MSGDISPLAY) {
            drawHeader(g);
            drawMessage(g);
            setStatusBar("返回", "");
            drawStatusBar(g);
        }
    }

    //設(shè)置顯示的標(biāo)題和顯示的信息
    public void set(String title, String msg)
    {
        mTitle = title;
        mMessage = msg;
    }

    public void setStatusBar(String l_Bar, String r_Bar)
    {
        mLeftBar = l_Bar;
        mRightBar = r_Bar;
    }

    //繪制標(biāo)題欄
    protected void drawHeader(Graphics g)
    {
        int color = HF.COLOR_WHITE;
        for (int j = 10; j >= 0; j--) {
            g.setColor(color);
            color -= 0x191900;
            g.fillRect(j * (mCanvasWidth / 10), HF.LARGE_FONT.getHeight(), (j + 1) * (mCanvasWidth / 10), 7);
        }
        g.setColor(HF.COLOR_RED);
        g.setFont(HF.LARGE_FONT);
        g.drawString(mTitle, mCanvasWidth / 2, 0, Graphics.HCENTER | Graphics.TOP);
    }

    //繪制信息區(qū),如果需要分行的話，就用&作為分隔符
    protected void drawMessage(Graphics g)
    {
        if (mMessage == null)
            return;
        g.setFont(HF.MEDIUM_FONT);
        g.setColor(HF.COLOR_BLACK);
        int offset = HF.MEDIUM_FONT.getHeight();
        int x = 2, y = 30;
        int pos1 = 0, pos2 = 0;
        int count = 0;
        do {
            pos1 = mMessage.indexOf("&", pos2);
            count++;
            if (count > mScrollIndex) { //當(dāng)前位置是需要顯示的
                if (y >= 0 && y < mCanvasHeight)
                    g.drawSubstring(mMessage, pos2, pos1 != -1 ? pos1 - pos2 : mMessage.length() - pos2, x, y,
                                    Graphics.LEFT | Graphics.TOP);
                y += offset;
            }
            pos2 = pos1 + 1;
        }
        while (pos1 != -1);
        if (y > mCanvasHeight - 14) {
            mIsNeedScrolled = true;
        }
        else{
            mIsNeedScrolled = false;
        }
    }

    //繪制狀態(tài)欄
    public static void drawStatusBar(Graphics g, int barColor, String leftBar, String rightBar, int screenWidth, int screenHeight)
    {
        int fontHeight = g.getFont().getHeight();
        int length = g.getFont().stringWidth(rightBar);
        g.setColor(barColor);
        g.fillRect(0, screenHeight - fontHeight - 2, screenWidth, fontHeight + 2);
        g.setColor(HF.COLOR_BLACK);
        g.drawString(leftBar, 1, screenHeight - fontHeight + 1, Graphics.LEFT | Graphics.TOP);
        g.drawString(rightBar, screenWidth - length - 4, screenHeight - fontHeight + 1, Graphics.LEFT | Graphics.TOP);
    }

    protected void drawStatusBar(Graphics g)
    {
        g.setFont(HF.MEDIUM_FONT);
        drawStatusBar(g, HF.COLOR_LIGHTBLUE, mLeftBar, mRightBar, mCanvasWidth, mCanvasHeight);
    }

    //使用指定的顏色清屏
    public void clearScreen(Graphics g, int bgColor)
    {
        g.setColor(bgColor);
        g.fillRect(0, 0, mCanvasWidth, mCanvasHeight);
    }

    //繪制方框
    public static void drawFrame(Graphics g, int color, int x, int y, int width, int height)
    {
        g.setColor(color);
        g.fillRect(x, y, width, height);
    }

    //后退到上一級(jí)的顯示
    protected void back()
    {
        mDisplayManager.back();
    }
}