// Menu selections for propagating or copying the current value of this control to all images
// Copy the last non-empty value in this control preceding this file up to the current image
protected virtual void MenuItemPropagateFromLastValue_Click(object sender, RoutedEventArgs e)
{
// Check the arguments for null
ThrowIf.IsNullArgument(sender, nameof(sender));
// Get the chosen data entry control
DataEntryControl control = (DataEntryControl)((MenuItem)sender).Tag;
if (control == null)
{
return;
}
bool checkForZero = control is DataEntryCounter;
bool isFlag = control is DataEntryFlag;
int indexToCopyFrom = -1;
ImageRow valueSource = null;
string valueToCopy = checkForZero ? "0" : String.Empty;
// Search for the row with some value in it, starting from the previous row
int currentRowIndex = (this.ThumbnailGrid.IsVisible == false) ? this.ImageCache.CurrentRow : this.ThumbnailGrid.GetSelected()[0];
for (int previousIndex = currentRowIndex - 1; previousIndex >= 0; previousIndex--)
{
ImageRow file = this.FileDatabase.FileTable[previousIndex];
if (file == null)
{
continue;
}
valueToCopy = file.GetValueDatabaseString(control.DataLabel);
if (valueToCopy == null)
{
continue;
}
valueToCopy = valueToCopy.Trim();
if (valueToCopy.Length > 0)
{
if ((checkForZero && !valueToCopy.Equals("0")) || // Skip over non-zero values for counters
(isFlag && !valueToCopy.Equals(Constant.BooleanValue.False, StringComparison.OrdinalIgnoreCase)) || // Skip over false values for flags
(!checkForZero && !isFlag))
{
indexToCopyFrom = previousIndex; // We found a non-empty value
valueSource = file;
break;
}
}
}
string newContent = valueToCopy;
if (indexToCopyFrom < 0)
{
// Display a dialog box saying there is nothing to propagate.
// Note that this should never be displayed, as the menu shouldn't be highlit if there is nothing to propagate
// But just in case...
Dialogs.DataEntryNothingToPropagateDialog(Application.Current.MainWindow);
return;
}
// Display the appropriate dialog box that explains what will happen. Arguments indicate what is to be propagated and how many files will be affected
int filesAffected = currentRowIndex - indexToCopyFrom;
if (Dialogs.DataEntryConfirmPropagateFromLastValueDialog(Application.Current.MainWindow, valueToCopy, filesAffected) != true)
{
return; // operation cancelled
// newContent = this.FileDatabase.FileTable[currentRowIndex].GetValueDisplayString(control.DataLabel); // No change, so return the current value
}
// Update the affected files. Note that we start on the row after the one with a value in it to the current row.
Mouse.OverrideCursor = Cursors.Wait;
this.FileDatabase.UpdateFiles(valueSource, control.DataLabel, indexToCopyFrom + 1, currentRowIndex);
control.SetContentAndTooltip(newContent);
Mouse.OverrideCursor = null;
}
