|
private SetItemsSource ( IEnumerable |
||
| graphics | IEnumerable |
The graphics. |
| Résultat | void | |
private static void OnFilterSourcePropertyChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
FeatureDataGrid grid = d as FeatureDataGrid;
IEnumerable <Graphic> oldValue = e.OldValue as IEnumerable <Graphic>;
IEnumerable <Graphic> newValue = e.NewValue as IEnumerable <Graphic>;
if (oldValue != null && oldValue is ObservableCollection <Graphic> )
{
(oldValue as ObservableCollection <Graphic>).CollectionChanged -= grid.FilterSource_CollectionChanged;
}
if (newValue != null && newValue is ObservableCollection <Graphic> )
{
(newValue as ObservableCollection <Graphic>).CollectionChanged += grid.FilterSource_CollectionChanged;
}
if (grid.GraphicsLayer != null)
{
grid.SetItemsSource((grid.GraphicsLayer != null && grid.GraphicsLayer.Graphics != null) ? (IList <Graphic>)grid.GraphicsLayer.Graphics : new List <Graphic>());
}
else
{
grid.ItemsSource = null;
}
grid.ResetLayout();
// Restoring previously selected graphics (if any):
if (grid.GraphicsLayer != null)
{
grid.RestorePreviousSelection(grid.GraphicsLayer.SelectedGraphics);
}
}
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.
}