flags.java

java Email you can use it to send email to others

	}
    }

    /**
     * Check whether the specified system flag is present in this Flags object.
     *
     * @return 		true of the given flag is present, otherwise false.
     */
    public boolean contains(Flag flag) {
	return (system_flags & flag.bit) != 0;
    }

    /**
     * Check whether the specified user flag is present in this Flags object.
     *
     * @return 		true of the given flag is present, otherwise false.
     */
    public boolean contains(String flag) {
	if (user_flags == null) 
	    return false;
	else
	    return user_flags.containsKey(flag.toLowerCase(Locale.ENGLISH));
    }

    /**
     * Check whether all the flags in the specified Flags object are
     * present in this Flags object.
     *
     * @return	true if all flags in the given Flags object are present, 
     *		otherwise false.
     */
    public boolean contains(Flags f) {
	// Check system flags
	if ((f.system_flags & system_flags) != f.system_flags)
	    return false;

	// Check user flags
	if (f.user_flags != null) {
	    if (user_flags == null)
		return false;
	    Enumeration e = f.user_flags.keys();

	    while (e.hasMoreElements()) {
		if (!user_flags.containsKey(e.nextElement()))
		    return false;
	    }
	}

	// If we've made it till here, return true
	return true;
    }

    /**
     * Check whether the two Flags objects are equal.
     *
     * @return	true if they're equal
     */
    public boolean equals(Object obj) {
	if (!(obj instanceof Flags))
	    return false;

	Flags f = (Flags)obj;

	// Check system flags
	if (f.system_flags != this.system_flags)
	    return false;

	// Check user flags
	if (f.user_flags == null && this.user_flags == null)
	    return true;
	if (f.user_flags != null && this.user_flags != null &&
		f.user_flags.size() == this.user_flags.size()) {
	    Enumeration e = f.user_flags.keys();

	    while (e.hasMoreElements()) {
		if (!this.user_flags.containsKey(e.nextElement()))
		    return false;
	    }
	    return true;
	}

	return false;
    }

    /**
     * Compute a hash code for this Flags object.
     *
     * @return	the hash code
     */
    public int hashCode() {
	int hash = system_flags;
	if (user_flags != null) {
	    Enumeration e = user_flags.keys();
	    while (e.hasMoreElements())
		hash += ((String)e.nextElement()).hashCode();
	}
	return hash;
    }

    /**
     * Return all the system flags in this Flags object.  Returns
     * an array of size zero if no flags are set.
     *
     * @return	array of Flags.Flag objects representing system flags
     */
    public Flag[] getSystemFlags() {
	Vector v = new Vector();
	if ((system_flags & ANSWERED_BIT) != 0)
	    v.addElement(Flag.ANSWERED);
	if ((system_flags & DELETED_BIT) != 0)
	    v.addElement(Flag.DELETED);
	if ((system_flags & DRAFT_BIT) != 0)
	    v.addElement(Flag.DRAFT);
	if ((system_flags & FLAGGED_BIT) != 0)
	    v.addElement(Flag.FLAGGED);
	if ((system_flags & RECENT_BIT) != 0)
	    v.addElement(Flag.RECENT);
	if ((system_flags & SEEN_BIT) != 0)
	    v.addElement(Flag.SEEN);
	if ((system_flags & USER_BIT) != 0)
	    v.addElement(Flag.USER);

	Flag[] f = new Flag[v.size()];
	v.copyInto(f);
	return f;
    }

    /**
     * Return all the user flags in this Flags object.  Returns
     * an array of size zero if no flags are set.
     *
     * @return	array of Strings, each String represents a flag.
     */
    public String[] getUserFlags() {
	Vector v = new Vector();
	if (user_flags != null) {
	    Enumeration e = user_flags.elements();

	    while (e.hasMoreElements())
		v.addElement(e.nextElement());
	}

	String[] f = new String[v.size()];
	v.copyInto(f);
	return f;
    }

    /**
     * Returns a clone of this Flags object.
     */
    public Object clone() {
	Flags f = null;
	try {
	    f = (Flags)super.clone();
	} catch (CloneNotSupportedException cex) {
	    // ignore, can't happen
	}
	if (this.user_flags != null && f != null)
	    f.user_flags = (Hashtable)this.user_flags.clone();
	return f;
    }

    /*****
    public static void main(String argv[]) throws Exception {
	// a new flags object
	Flags f1 = new Flags();
	f1.add(Flags.Flag.DELETED);
	f1.add(Flags.Flag.SEEN);
	f1.add(Flags.Flag.RECENT);
	f1.add(Flags.Flag.ANSWERED);

	// check copy constructor with only system flags
	Flags fc = new Flags(f1);
	if (f1.equals(fc) && fc.equals(f1))
	    System.out.println("success");
	else
	    System.out.println("fail");

	// check clone with only system flags
	fc = (Flags)f1.clone();
	if (f1.equals(fc) && fc.equals(f1))
	    System.out.println("success");
	else
	    System.out.println("fail");

	// add a user flag and make sure it still works right
	f1.add("MyFlag");

	// shouldn't be equal here
	if (!f1.equals(fc) && !fc.equals(f1))
	    System.out.println("success");
	else
	    System.out.println("fail");

	// check clone
	fc = (Flags)f1.clone();
	if (f1.equals(fc) && fc.equals(f1))
	    System.out.println("success");
	else
	    System.out.println("fail");

	// make sure user flag hash tables are separate
	fc.add("AnotherFlag");
	if (!f1.equals(fc) && !fc.equals(f1))
	    System.out.println("success");
	else
	    System.out.println("fail");

	// check copy constructor
	fc = new Flags(f1);
	if (f1.equals(fc) && fc.equals(f1))
	    System.out.println("success");
	else
	    System.out.println("fail");

	// another new flags object
	Flags f2 = new Flags(Flags.Flag.ANSWERED);
	f2.add("MyFlag");

	if (f1.contains(Flags.Flag.DELETED))
	    System.out.println("success");
	else
	    System.out.println("fail");
		
	if (f1.contains(Flags.Flag.SEEN))
	    System.out.println("success");
	else
	    System.out.println("fail");

	if (f1.contains(Flags.Flag.RECENT))
	    System.out.println("success");
	else
	    System.out.println("fail");

	if (f1.contains("MyFlag"))
	    System.out.println("success");
	else
	    System.out.println("fail");

	if (f2.contains(Flags.Flag.ANSWERED))
	    System.out.println("success");
	else
	    System.out.println("fail");


	System.out.println("----------------");

	String[] s = f1.getUserFlags();
	for (int i = 0; i < s.length; i++)
	    System.out.println(s[i]);
	System.out.println("----------------");
	s = f2.getUserFlags();
	for (int i = 0; i < s.length; i++)
	    System.out.println(s[i]);

	System.out.println("----------------");

	if (f1.contains(f2)) // this should be true
	    System.out.println("success");
	else
	    System.out.println("fail");

	if (!f2.contains(f1)) // this should be false
	    System.out.println("success");
	else
	    System.out.println("fail");

	Flags f3 = new Flags();
	f3.add(Flags.Flag.DELETED);
	f3.add(Flags.Flag.SEEN);
	f3.add(Flags.Flag.RECENT);
	f3.add(Flags.Flag.ANSWERED);
	f3.add("ANOTHERFLAG");
	f3.add("MYFLAG");

	f1.add("AnotherFlag");

	if (f1.equals(f3))
	    System.out.println("equals success");
	else
	    System.out.println("fail");
	if (f3.equals(f1))
	    System.out.println("equals success");
	else
	    System.out.println("fail");
	System.out.println("f1 hash code " + f1.hashCode());
	System.out.println("f3 hash code " + f3.hashCode());
	if (f1.hashCode() == f3.hashCode())
	    System.out.println("success");
	else
	    System.out.println("fail");
    }
    ****/
}