public string IdentifyFeature(Map map, GeoCollection <object> args)
{
string callbackResult = string.Empty;
if (map != null)
{
JsonCallbackRequest callbackRequest = JsonSerializer.Deserialize <JsonCallbackRequest>(args[0].ToString());
callbackResult = GetIdentifiedFeatureInfo(callbackRequest, map);
}
return(callbackResult);
}
private string GetIdentifiedFeatureInfo(JsonCallbackRequest callbackRequest, Map map)
{
// Get the requested sub-categories
Category selectedCategory = null;
Collection <CategoryItem> selectedCategoryItems = new Collection <CategoryItem>();
if (callbackRequest.StyleBuildType == DemographicStyleBuilderType.PieChart)
{
selectedCategoryItems = GetCategoryItemByAlias(callbackRequest.SelectedCategoryItems, ref selectedCategory);
}
else
{
selectedCategoryItems = GetCategoryItemByAlias(new Collection <string>()
{
callbackRequest.RequestColumnAlias
}, ref selectedCategory);
}
// Get the selected columns
Collection <string> selectedColumns = new Collection <string>();
foreach (CategoryItem categoryItem in selectedCategoryItems)
{
selectedColumns.Add(categoryItem.ColumnName);
}
selectedColumns.Add("Name");
// Find the identified feature with specified columns
ShapeFileFeatureLayer statesLayer = map.DynamicOverlay.Layers["usStatesLayer"] as ShapeFileFeatureLayer;
statesLayer.Open();
Feature identifiedFeature = statesLayer.FeatureSource.GetFeatureById(callbackRequest.SelectedFeatureId, selectedColumns);
((CloudPopup)map.Popups["featureInfoPopup"]).Position = identifiedFeature.GetShape().GetCenterPoint();
// Format the inner-html of the popup
StringBuilder popupHtml = new StringBuilder("<table>");
popupHtml.Append(string.Format("<tr><td class='popupTitle'>{0}</td></tr>", identifiedFeature.ColumnValues["Name"]));
popupHtml.Append("<tr><td><div class='hrLine'></div></td></tr>");
for (int i = 0; i < selectedColumns.Count - 1; i++)
{
string formatedString = DemographicStyleTextFormatter.GetFormatedString(selectedColumns[i], double.Parse(identifiedFeature.ColumnValues[selectedColumns[i]]));
popupHtml.Append(string.Format("<tr class='popupText'><td>{0}</td></tr>", formatedString));
}
popupHtml.Append("</table>");
return(popupHtml.ToString());
}
public string ApplyStyle(Map map, GeoCollection <object> args)
{
string callbackResult = string.Empty;
if (map != null)
{
// Replace the "$=" with ">=", because the ">=" is not allowed in AJAX Content
string jsonParameters = args[0].ToString();
if (jsonParameters.Contains("$"))
{
jsonParameters = jsonParameters.Replace("$", ">=");
}
JsonCallbackRequest callbackRequest = JsonSerializer.Deserialize <JsonCallbackRequest>(jsonParameters);
callbackResult = UpdateMapAndLegend(callbackRequest, map).ToString();
}
return(callbackResult);
}
private bool UpdateMapAndLegend(JsonCallbackRequest callbackRequest, Map map)
{
// Get the requested sub-categories
Category selectedCategory = null;
Collection <CategoryItem> selectedCategoryItems = new Collection <CategoryItem>();
if (callbackRequest.StyleBuildType == DemographicStyleBuilderType.PieChart)
{
selectedCategoryItems = GetCategoryItemByAlias(callbackRequest.SelectedCategoryItems, ref selectedCategory);
}
else
{
selectedCategoryItems = GetCategoryItemByAlias(new Collection <string>()
{
callbackRequest.RequestColumnAlias
}, ref selectedCategory);
}
DemographicStyleBuilder demographicStyle = null;
switch (callbackRequest.StyleBuildType)
{
case DemographicStyleBuilderType.PieChart:
demographicStyle = new PieChartDemographicStyleBuilder();
foreach (CategoryItem categoryItem in selectedCategoryItems)
{
((PieChartDemographicStyleBuilder)demographicStyle).SelectedColumnAliases.Add(categoryItem.Alias);
}
if (!string.IsNullOrEmpty(callbackRequest.StartColor))
{
((PieChartDemographicStyleBuilder)demographicStyle).Color = GeoColor.FromHtml(callbackRequest.StartColor);
}
break;
case DemographicStyleBuilderType.Thematic:
demographicStyle = new ThematicDemographicStyleBuilder();
if (!string.IsNullOrEmpty(callbackRequest.StartColor))
{
((ThematicDemographicStyleBuilder)demographicStyle).StartColor = GeoColor.FromHtml(callbackRequest.StartColor);
}
if (!string.IsNullOrEmpty(callbackRequest.EndColor))
{
((ThematicDemographicStyleBuilder)demographicStyle).EndColor = GeoColor.FromHtml(callbackRequest.EndColor);
}
if (!string.IsNullOrEmpty(callbackRequest.ColorWheelDirection))
{
((ThematicDemographicStyleBuilder)demographicStyle).ColorWheelDirection = callbackRequest.ColorWheelDirection.Equals("Clockwise") ? ColorWheelDirection.Clockwise : ColorWheelDirection.CounterClockwise;
}
break;
case DemographicStyleBuilderType.DotDensity:
demographicStyle = new DotDensityDemographicStyleBuilder();
if (!string.IsNullOrEmpty(callbackRequest.StartColor))
{
((DotDensityDemographicStyleBuilder)demographicStyle).Color = GeoColor.FromHtml(callbackRequest.StartColor);
}
if (callbackRequest.SliderValue > 0)
{
((DotDensityDemographicStyleBuilder)demographicStyle).DotDensityValue = 50 * (callbackRequest.SliderValue / 3.0);
}
break;
case DemographicStyleBuilderType.ValueCircle:
demographicStyle = new ValueCircleDemographicStyleBuilder();
if (!string.IsNullOrEmpty(callbackRequest.StartColor))
{
((ValueCircleDemographicStyleBuilder)demographicStyle).Color = GeoColor.FromHtml(callbackRequest.StartColor);
}
if (callbackRequest.SliderValue > 0)
{
((ValueCircleDemographicStyleBuilder)demographicStyle).RadiusRatio = callbackRequest.SliderValue / 3.0;
}
break;
default:
break;
}
foreach (CategoryItem categoryItem in selectedCategoryItems)
{
demographicStyle.SelectedColumns.Add(categoryItem.ColumnName);
}
ShapeFileFeatureLayer statesLayer = map.DynamicOverlay.Layers["usStatesLayer"] as ShapeFileFeatureLayer;
statesLayer.ZoomLevelSet.ZoomLevel01.CustomStyles.Clear();
Style selectedStyle = demographicStyle.GetStyle(statesLayer.FeatureSource);
statesLayer.ZoomLevelSet.ZoomLevel01.CustomStyles.Add(selectedStyle);
statesLayer.ZoomLevelSet.ZoomLevel01.ApplyUntilZoomLevel = ApplyUntilZoomLevel.Level20;
map.DynamicOverlay.Redraw();
// update the legend based on the selected style
UpdateLegend(demographicStyle, map);
return(true);
}
