/// <summary>
/// Gets the attributes for a new label.
/// </summary>
/// <param name="id">The ID that will be assigned to the new label</param>
/// <returns>True if attributes entered OK (m_LastRow defined).</returns>
bool GetAttributes(string id)
{
// There HAS to be a schema.
if (m_Schema==null)
return false;
// Although unlikely, it is conceivable that the attributes have already
// been loaded into the database. In that case, display the existing
// attributes for editing.
AttributeDataForm dial;
DataRow[] existingData = AttributeData.FindByKey(m_Schema, id);
if (existingData.Length > 0)
dial = new AttributeDataForm(m_Schema, existingData[0]);
else
dial = new AttributeDataForm(m_Schema, id);
if (dial.ShowDialog() == DialogResult.OK)
m_LastRow = dial.Data;
else
m_LastRow = null;
dial.Dispose();
return (m_LastRow != null);
}
/// <summary>
/// Displays database attributes so that they can be edited by the user.
/// </summary>
/// <param name="r">The row of interest</param>
/// <returns>True if any changes were saved to the database</returns>
internal static bool Update(Row r)
{
// If the row is associated with any RowText, ensure it is removed from
// the spatial index NOW (if we wait until the edit has been completed,
// it's possible we won't be able to update the index properly)
TextFeature[] text = r.Id.GetRowText();
EditingIndex index = CadastralMapModel.Current.EditingIndex;
bool isChanged = false;
try
{
// Remove the text from the spatial index (but see comment below)
foreach (TextFeature tf in text)
index.RemoveFeature(tf);
// Display the attribute entry dialog
AttributeDataForm dial = new AttributeDataForm(r.Table, r.Data);
isChanged = (dial.ShowDialog() == DialogResult.OK);
dial.Dispose();
if (isChanged)
{
IDataServer ds = EditingController.Current.DataServer;
if (ds == null)
throw new InvalidOperationException("No database available");
ds.SaveRow(r.Data);
}
}
finally
{
// Ensure text has been re-indexed... actually, this is likely to be
// redundant, because nothing here has actually altered the stored
// width and height of the text (if the attributes have become more
// verbose, they'll just be scrunched up a bit tighter). The text
// metrics probably should be reworked (kind of like AutoSize for
// Windows labels), but I'm not sure whether this demands a formal
// editing operation.
foreach (TextFeature tf in text)
index.AddFeature(tf);
// Re-display the text if any changes have been saved
if (isChanged)
{
ISpatialDisplay display = EditingController.Current.ActiveDisplay;
display.Redraw();
}
}
return isChanged;
}