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using System;
using System.Collections.Generic;
using System.Text;
namespace LumiSoft.Net.IMAP.Server
{
/// <summary>
/// Holds IMAP selected folder info.
/// </summary>
public class IMAP_SelectedFolder
{
private string m_Folder = "";
private long m_FolderUID = 0;
private bool m_ReadOnly = false;
private IMAP_MessageCollection m_pMessages = null;
/// <summary>
/// Default constructor.
/// </summary>
/// <param name="folder">Folder name.</param>
internal IMAP_SelectedFolder(string folder)
{
m_Folder = folder;
m_pMessages = new IMAP_MessageCollection();
}
#region method Update
/// <summary>
/// Updates current folder messages info with new messages info.
/// </summary>
/// <param name="folder"></param>
/// <returns></returns>
internal string Update(IMAP_SelectedFolder folder)
{
StringBuilder retVal = new StringBuilder();
long maxUID = this.MessageUidNext - 1;
long countExists = this.Messages.Count;
long countRecent = this.RecentCount;
// Add new messages
for(int i=folder.Messages.Count-1;i>0;i--){
IMAP_Message message = folder.Messages[i];
// New message
if(message.UID > maxUID){
m_pMessages.Add(
message.ID,
message.UID,
message.InternalDate,
message.Size,
message.Flags
);
}
// New messages ended
else{
break;
}
}
// Remove deleted messages
for(int i=0;i<m_pMessages.Count-1;i++){
IMAP_Message message = m_pMessages[i];
if(!folder.m_pMessages.ContainsUID(message.UID)){
retVal.Append("* " + message.SequenceNo + " EXPUNGE\r\n");
m_pMessages.Remove(message);
i--;
}
}
if(countExists != this.Messages.Count){
retVal.Append("* " + this.Messages.Count + " EXISTS\r\n");
}
if(countRecent != this.RecentCount){
retVal.Append("* " + this.RecentCount + " RECENT\r\n");
}
return retVal.ToString();
}
#endregion
#region Properties Implementation
/// <summary>
/// Gets selected folder name.
/// </summary>
public string Folder
{
get{ return m_Folder; }
}
/// <summary>
/// Gets folder UID(UIDVADILITY) value.
/// </summary>
public long FolderUID
{
get{ return m_FolderUID; }
set{ m_FolderUID = value; }
}
/// <summary>
/// Gets or sets if folder is read only.
/// </summary>
public bool ReadOnly
{
get{ return m_ReadOnly; }
set{ m_ReadOnly = value; }
}
/// <summary>
/// Gets selected folder messages info.
/// </summary>
public IMAP_MessageCollection Messages
{
get{ return m_pMessages; }
}
/// <summary>
/// Gets number of messages with \UNSEEN flags in the collection.
/// </summary>
public int UnSeenCount
{
get{
int count = 0;
foreach(IMAP_Message message in m_pMessages){
if((message.Flags & IMAP_MessageFlags.Seen) == 0){
count++;
}
}
return count;
}
}
/// <summary>
/// Gets number of messages with \RECENT flags in the collection.
/// </summary>
public int RecentCount
{
get{
int count = 0;
foreach(IMAP_Message message in m_pMessages){
if((message.Flags & IMAP_MessageFlags.Recent) != 0){
count++;
}
}
return count;
}
}
/// <summary>
/// Gets number of messages with \DELETED flags in the collection.
/// </summary>
public int DeletedCount
{
get{
int count = 0;
foreach(IMAP_Message message in m_pMessages){
if((message.Flags & IMAP_MessageFlags.Deleted) != 0){
count++;
}
}
return count;
}
}
/// <summary>
/// Gets first message index in the collection which has not \SEEN flag set.
/// </summary>
public int FirstUnseen
{
get{
int index = 1;
foreach(IMAP_Message message in m_pMessages){
if((message.Flags & IMAP_MessageFlags.Seen) == 0){
return index;
}
index++;
}
return 0;
}
}
/// <summary>
/// Gets next new message predicted UID.
/// </summary>
public long MessageUidNext
{
get{
if(m_pMessages.Count > 0){
return m_pMessages[m_pMessages.Count - 1].UID + 1;
}
else{
return 1;
}
}
}
#endregion
}
}
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