/// <summary>
/// Aborts this command.
/// </summary>
/// <returns>True (always).</returns>
protected bool AbortCommand()
{
// If this command was invoked by an update command, get
// the update to clean up. Otherwise tell the controller.
if (m_UpdCmd != null)
{
m_UpdCmd.AbortCommand(this);
}
else
{
this.Controller.AbortCommand(this);
}
// Ensure that any reserved IDs have been released
IdManager idMan = CadastralMapModel.Current.IdManager;
if (idMan != null)
{
idMan.FreeAllReservedIds();
}
return(true);
}
void LoadDataFiles(string folderName, uint[] fileNums)
{
Trace.Write("Reading data...");
EditDeserializer ed = new EditDeserializer(this);
Session lastSession = null;
IdManager idMan = m_MapModel.IdManager;
foreach (uint fileNum in fileNums)
{
string editFile = Path.Combine(folderName, ProjectDatabase.GetDataFileName(fileNum));
using (TextReader tr = File.OpenText(editFile))
{
TextEditReader er = new TextEditReader(tr);
// Ignore any empty files altogether
while (er.HasNext)
{
ed.SetReader(er);
Change edit = Change.Deserialize(ed);
if (edit is NewProjectEvent)
{
m_ProjectInfo = (NewProjectEvent)edit;
// If the project settings don't have default entity types, initialize them with
// the layer defaults. This covers a case where the settings file has been lost, and
// automatically re-created by ProjectSettings.CreateInstance.
var layer = EnvironmentContainer.FindLayerById(m_ProjectInfo.LayerId);
m_Settings.SetEntityTypeDefaults(layer);
}
else if (edit is NewSessionEvent)
{
lastSession = new Session(this, (NewSessionEvent)edit, editFile);
m_MapModel.AddSession(lastSession);
}
else if (edit is EndSessionEvent)
{
Debug.Assert(lastSession != null);
lastSession.EndTime = edit.When;
}
else if (edit is IdAllocation)
{
if (idMan != null)
{
IdAllocation alloc = (IdAllocation)edit;
IdGroup g = idMan.FindGroupById(alloc.GroupId);
g.AddIdPacket(alloc);
// Remember that allocations have been made in the session (bit of a hack
// to ensure the session isn't later removed if no edits are actually
// performed).
lastSession.AddAllocation(alloc);
}
}
else
{
Debug.Assert(edit is Operation);
Debug.Assert(lastSession != null);
lastSession.AddOperation((Operation)edit);
}
}
}
}
if (m_ProjectInfo == null)
{
throw new ApplicationException("Could not locate the project creation event");
}
// Apply any forward references
ed.ApplyForwardRefs();
// Remember the highest internal ID used by the project
SetLastItem(fileNums[fileNums.Length - 1]);
}
/// <summary>
/// Load an ID combo box with all the available IDs for a specific entity type.
/// </summary>
/// <param name="box">The combo box (not null)</param>
/// <param name="ent">The entity type that the combo is for (if null, the combo will
/// be empty)</param>
/// <param name="handle">The ID handle that should be defined to correspond with the
/// first available ID (may be null). If there are no available IDs for the specified
/// entity type, any ID previously reserved will be released.</param>
/// <returns>The number of IDs that were loaded into the combo (if any)</returns>
internal static int LoadIdCombo(ComboBox box, IEntity ent, IdHandle handle)
{
if (box == null)
{
throw new ArgumentNullException();
}
// Clear out anything that was in the combo before.
box.Items.Clear();
if (ent == null)
{
return(0);
}
// Get a list of all the available IDs for the specified entity type...
IdManager idMan = CadastralMapModel.Current.IdManager;
if (idMan == null)
{
return(0);
}
IdGroup group = idMan.GetGroup(ent);
if (group == null)
{
return(0);
}
// Get the available IDs for the group
uint[] avail = group.GetAvailIds();
// If we didn't find any, obtain an extra allocation
if (avail.Length == 0)
{
IdPacket newPacket = group.GetAllocation(true); // with announcement
avail = group.GetAvailIds();
if (avail.Length == 0)
{
throw new ApplicationException("Cannot obtain ID allocation");
}
}
// Load the combo
DisplayId[] ids = new DisplayId[avail.Length];
for (int i = 0; i < ids.Length; i++)
{
ids[i] = new DisplayId(group, avail[i]);
}
box.Items.AddRange(ids);
// Reserve the first available ID if a handle was supplied (and select it)
if (handle != null)
{
IdPacket p = group.FindPacket(avail[0]);
handle.ReserveId(p, ent, avail[0]);
box.SelectedItem = ids[0];
}
return(avail.Length);
}