/// <summary>
/// When filter source changes the view and record text needs to be updated.
/// </summary>
private static void OnFilterSourcePropertyChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
FeatureDataGrid grid = d as FeatureDataGrid;
grid.ApplyFilter();
grid.UpdateRecordsText();
}
private static void OnSelectedGraphicCountPropertyChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
FeatureDataGrid grid = d as FeatureDataGrid;
int oldValue = (int)e.OldValue;
int newValue = (int)e.NewValue;
// if they are different update the status bar text to reflect changes
if (oldValue != newValue)
{
grid.UpdateRecordsText();
}
if (grid.GraphicsLayer == null)
{
return;
}
IEnumerable <Graphic> gridSelected = grid.SelectedItems.Cast <Graphic>();;
var addedSelections = grid.GraphicsLayer.SelectedGraphics.Except(gridSelected).ToList();
IEnumerable <Graphic> layerSelected = grid.GraphicsLayer.SelectedGraphics;
var removedSelections = gridSelected.Except(grid.GraphicsLayer.SelectedGraphics).ToList();
foreach (var add in addedSelections)
{
grid.SelectedItems.Add(add);
}
foreach (var remove in removedSelections)
{
grid.SelectedItems.Remove(remove);
}
}
private static void OnTotalGraphicCountPropetyChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
FeatureDataGrid grid = d as FeatureDataGrid;
int oldValue = (int)e.OldValue;
int newValue = (int)e.NewValue;
// if they are different update the status bar text to reflect changes
if (oldValue != newValue)
{
grid.UpdateRecordsText();
}
}
private static void OnGraphicsLayerPropertyChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
FeatureDataGrid grid = d as FeatureDataGrid;
GraphicsLayer oldValue = e.OldValue as GraphicsLayer;
GraphicsLayer newValue = e.NewValue as GraphicsLayer;
if (oldValue != null)
{
if (grid.featureLayer != null)
{
grid.featureLayer.UpdateCompleted -= grid.FeatureLayer_UpdateCompleted;
grid.featureLayer = null; // clear out reference to old feature layer if it exists
}
oldValue.PropertyChanged -= grid.GraphicsLayer_PropertyChanged;
BindingOperations.ClearBinding(grid, FeatureDataGrid.TotalGraphicCountProperty);
BindingOperations.ClearBinding(grid, FeatureDataGrid.SelectedGraphicCountProperty);
if (!oldValue.IsInitialized)
{
oldValue.Initialized -= grid.GraphicsLayer_Initialized;
}
}
if (newValue != null)
{
// if new layer is feature layer set private member
if (newValue is FeatureLayer)
{
grid.featureLayer = newValue as FeatureLayer;
grid.OutFields = grid.featureLayer.OutFields.ToString();
grid.featureLayer.UpdateCompleted += grid.FeatureLayer_UpdateCompleted;
}
else
{
grid.GraphicCollection = newValue.Graphics;
}
if (newValue.IsInitialized)
{
newValue.PropertyChanged += grid.GraphicsLayer_PropertyChanged;
grid.SetItemsSource(newValue.Graphics); // Set the ItemsSource
grid.BindToTotalGraphicsCount(); // Add total graphic count binding.
grid.BindToSelectedGraphicsCount(); // Add selected graphic count binding.
}
else
{
// Wait for initialize event to fire before configuring feature data grid
newValue.Initialized += grid.GraphicsLayer_Initialized;
}
}
grid.UpdateRecordsText(); // Update the status bar text.
grid.SetSubmitButtonVisibility(); // Enable/Disable submit button option.
grid.SetDeleteSelectedRowsMenuButtonEnableState(); // Enable/Disable delete option.
}