//作者：[email protected]
package com.example.simpletable;

import java.util.ArrayList;
import java.util.List;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Rect;
import android.view.View;
import android.widget.ImageView;
import android.widget.TableLayout;
import android.widget.TableRow;
import android.widget.TextView;

public class SimpleTableView extends TableLayout 
{//一個用於顯示簡易表格的VIEW

	protected int m_ColumnN=2;//列的數目。該值只能在建構函式中設定，設定之後不能修改。

	int m_LineColor=Color.BLACK;//線的顏色
	int m_LineWidth=1;//線寬
	
	protected List<TableRow> m_Rows;
	protected List<List<View>> m_Views;
	
	public int getM_ColumnN() {
		return m_ColumnN;
	}
	
	public SimpleTableView(Context context) {
		super(context);
		// TODO Auto-generated constructor stub
		m_Rows=new ArrayList<TableRow>();
		m_Views=new ArrayList<List<View>>();
		this.setWillNotDraw(false);
	}
	public SimpleTableView(Context context,int n) {//指定列的數目
		super(context);
		// TODO Auto-generated constructor stub
		m_Rows=new ArrayList<TableRow>();
		m_Views=new ArrayList<List<View>>();
		if(n>0) m_ColumnN=n;
		else m_ColumnN=2;
		this.setWillNotDraw(false);
	}
	
	public void ClearRows()
	{
		if(m_Rows != null) m_Rows.clear();
		if(m_Views != null) m_Views.clear();
		m_Rows=new ArrayList<TableRow>();
		m_Views=new ArrayList<List<View>>();
		
		this.removeAllViews();
	}
	
	public int AddRow(java.lang.Object objects[])//新增一行，返回行數。如果objects的數目小於m_ColumnN則返回0。
	{
		if(objects==null) return 0;
		if(objects.length<m_ColumnN) return 0;
		
		List<View> CRowViews=new ArrayList<View>();
		int i,nRows;
		TableRow CRow;
		String s1 = null,ss[]={" "};
		View v1=null;
		
		m_Rows.add(new TableRow(this.getContext()));
		m_Views.add(new ArrayList<View>());
		nRows=m_Rows.size();
		CRowViews=m_Views.get(nRows-1);
		CRow=m_Rows.get(nRows-1);		
		
		for(i=0;i<m_ColumnN;i++)
		{
			if(objects[i] != null) v1=CreateCellView(objects[i]);
			if(v1 == null) v1=new View(getContext());		
			CRow.addView(v1);	
			CRowViews.add(v1);
		}
		this.addView(CRow);		

		return nRows;	
	}
	
	public View GetCellView(int row,int column)//獲得某一個單元格的View，row為行數，column為列數，從0開始
	{
		if(row<0||row>=m_Rows.size()) return null;	
		else 
		{
			if(column<0||column>=m_Views.get(row).size()) return null;	
			else return m_Views.get(row).get(column);
		}	
	}
	
	protected View CreateCellView(Object obj)//根據obj的型別建立一個VIEW並返回之，如果無法識別Object的型別返回null
	{
		View rView=null;
		String classname = obj.getClass().toString();
		
		switch (classname)
		{
		case "class java.lang.String"://這個值是String.class.toString()的結果
			
			TextView tView=new TextView(getContext());
			tView.setText((String) obj);
			rView=tView;
			break;
			
		case "class android.graphics.Bitmap":
			ImageView iView=new ImageView(getContext());
			iView.setImageBitmap((Bitmap) obj);
			rView=iView;
			break;
			
		//在此處識別其它的型別，建立一個View並附給rView			
			
		default:
			rView=null;
			break;
		}
		return rView;		
	}

	@Override
	protected void onDraw(Canvas canvas)
	{
		super.onDraw(canvas);
		//
		if(m_Rows.size()<1) return;
		
		Paint paint1=new Paint();
		int i,nRLinePosition=0,nCLinePosition=0,width=getWidth(),height=getHeight();
		paint1.setStyle(Paint.Style.STROKE);
		paint1.setStrokeWidth(m_LineWidth);
		paint1.setColor(m_LineColor);
		
		canvas.drawRect(new Rect(1, 1, width, height), paint1);
		
		for(i=0;i<m_Rows.size();i++)
		{
			nRLinePosition+=m_Rows.get(i).getHeight();
			canvas.drawLine(0, nRLinePosition, width, nRLinePosition, paint1);
		}
		for(i=0;i<m_Views.get(0).size();i++)
		{
			nCLinePosition+=m_Views.get(0).get(i).getWidth();
			canvas.drawLine(nCLinePosition, 0, nCLinePosition, height, paint1);
		}
	}
}