/// <summary>
/// Creates instance of history item and loads its content from
/// database.
/// </summary>
/// <param name="contact">
/// Contact with whom history this item is associated.
/// </param>
/// <param name="hEvent">
/// Miranda event handle.
/// </param>
internal static HistoryItem Load(Contact contact,
IntPtr hEvent)
{
if (hEvent == IntPtr.Zero)
throw new ArgumentException("hEvent cannot be zero.");
// Miranda interface for freeing strings:
var mmi = MMInterface.GetMMI();
using (var pDbEventInfo = new AutoPtr(Marshal.AllocHGlobal(
Marshal.SizeOf(typeof (DBEventInfo)))))
{
var result = Plugin.m_CallService(
"DB/Event/Get",
hEvent,
pDbEventInfo);
if (result != IntPtr.Zero)
throw new DatabaseException();
var eventInfo =
(DBEventInfo)
Marshal.PtrToStructure(pDbEventInfo, typeof (DBEventInfo));
var type = (HistoryItemType)eventInfo.eventType;
var direction = (eventInfo.flags & DBEventInfo.DBEF_SENT) != 0
? HistoryItemDirection.Outgoing
: HistoryItemDirection.Incoming;
var historyItem = new HistoryItem(type, direction);
if (type == HistoryItemType.Message)
{
// Get message text:
using (var pDbEventGetText = new AutoPtr(
Marshal.AllocHGlobal(Marshal.SizeOf(
typeof (DBEventGetText)))))
{
var getText = new DBEventGetText();
getText.dbei = pDbEventInfo;
getText.datatype = Utils.DBVT_WCHAR;
Marshal.StructureToPtr(getText, pDbEventGetText, false);
var pString = Plugin.m_CallService(
"DB/Event/GetText",
IntPtr.Zero,
pDbEventGetText);
mmi.mmi_free(pString);
var message = Marshal.PtrToStringUni(pString);
historyItem.MessageText = message;
}
}
historyItem.Contact = contact;
historyItem.DateTime = new DateTime(1970, 1, 1)
.AddSeconds(eventInfo.timestamp);
return historyItem;
}
}
/// <summary>
/// Compares this history item with other.
/// </summary>
/// <param name="other">
/// History item to be compared to
/// </param>
/// <returns>
/// true if objects are equal.
/// </returns>
public bool Equals(HistoryItem other)
{
if (ReferenceEquals(null, other)) return false;
if (ReferenceEquals(this, other)) return true;
return Equals(other.Contact, Contact) &&
Equals(other.Type, Type) &&
Equals(other.MessageText, MessageText) &&
other.DateTime.Equals(DateTime);
}