internal RefreshedEventArgs(LayerItemViewModel layerItem, Exception ex)
{
LayerItem = layerItem;
Error = ex;
}
/// <summary>
/// Invoked whenever application code or internal processes (such as a
/// rebuilding layout pass) call ApplyTemplate. In simplest terms, this
/// means the method is called just before a UI element displays in your
/// app. Override this method to influence the default post-template
/// logic of a class.
/// </summary>
protected override void OnApplyTemplate()
{
base.OnApplyTemplate();
if (!_isLoaded)
{
_isLoaded = true;
if (Windows.ApplicationModel.DesignMode.DesignModeEnabled && (Layers == null || !Layers.Any()))
{
if (_legendTree.LayerItems == null)
{
// Create a basic hierarchy for design : Map Layer -> SubLayer -> LegendItemViewModel
var legendItem1 = new LegendItemViewModel
{
Label = "LegendItem1",
Symbol = new SimpleMarkerSymbol { Style = SimpleMarkerStyle.Circle, Color = Colors.Red }
};
var legendItem2 = new LegendItemViewModel
{
Label = "LegendItem2",
Symbol = new SimpleMarkerSymbol { Style = SimpleMarkerStyle.Diamond, Color = Colors.Green }
};
var layerItem = new LayerItemViewModel
{
Label = "LayerItem",
LegendItems = new ObservableCollection<LegendItemViewModel> { legendItem1, legendItem2 }
};
var mapLayerItem = new LayerItemViewModel
{
Label = "MapLayerItem",
LayerType = MapLayerItem.MapLayerType,
LayerItems = new ObservableCollection<LayerItemViewModel> { layerItem },
};
_legendTree.LayerItems = new ObservableCollection<LayerItemViewModel> { mapLayerItem };
}
}
else
{
// Initialize the Map now that all parameters are well known
_legendTree.Layers = Layers;
}
}
}
