permissionmanager.java

用java 实现的IE browser适合于学者

/*
 * Created on 2004-8-26
 *
 * TODO To change the template for this generated file go to
 * Window - Preferences - Java - Code Style - Code Templates
 */
package com.hnjchina.securityManager;

/**
 * @author limeiyong
 *
 * TODO To change the template for this generated type comment go to
 * Window - Preferences - Java - Code Style - Code Templates
 */
import java.util.BitSet;

/**
 * @author limeiyong
 *
 * TODO To change the template for this generated type comment go to
 * Window - Preferences - Java - Code Style - Code Templates
 */
public class PermissionManager {
	static	int	Visible=0;
	static	int	Enable=1;
	private int	objectStatus;
    BitSet bits = new BitSet();
    byte	bytes;
	public	PermissionManager(int objectStatus){
		this.objectStatus=objectStatus;
		bytes=Byte.parseByte(Integer.toBinaryString(objectStatus));
		bits=fromByte();
	}
public	void	setvisible(boolean lb_visible){
    setObjectStatus(Visible,lb_visible);
}
public	void	setenable(boolean ab_enable){
	setObjectStatus(Enable,ab_enable);
}
private	void	setObjectStatus(int bitStatus,boolean ab_boolean){
	int	li_status=0;
	if	(ab_boolean){ 
		li_status=1;
		BitSet	bitset=new BitSet();
		bitset.set(bitStatus);
		bits.or(bitset);
	}else{
		BitSet	bitset=new BitSet();
		BitSet	bitset2=new BitSet();
		for	(int i=0;i<8;i++){
			bitset.set(i);
		}
		bitset2.set(bitStatus);
		bitset.xor(bitset2);
		bits.and(bitset);
	}
}
public	boolean	isVisible(){
	return bits.get(Visible);
}
public	boolean	isEnable(){
	return bits.get(Enable);
}
private BitSet fromByte() {
    for (int i=0; i<8; i++) {
        if ((bytes&(1<<(i%8))) > 0) {
            bits.set(i);
        }
    }
    return bits;
}
public	int	formByte() {
	int		li_rc=0;
	for	(int i=0;i<8;i++){
		if (((bytes&(1<<(i%8))))>0) {
			li_rc=li_rc+2^i;
		}
	}
	return li_rc;
}
private byte toByte(BitSet bits) {
    byte bytes = 0;
    for (int i=0; i<bits.length(); i++) {
        if (bits.get(i)) {
            bytes |= 1<<(i%8);
        }
    }
    return bytes;
}
}