// Copyright 2010 ESRI
// 
// All rights reserved under the copyright laws of the United States
// and applicable international laws, treaties, and conventions.
// 
// You may freely redistribute and use this sample code, with or
// without modification, provided you include the original copyright
// notice and use restrictions.
// 
// See the use restrictions.
// 

namespace CustomTools
{
    class BufferTool : ESRI.ArcGIS.ADF.Web.UI.WebControls.Tools.IMapServerToolAction
    {
        #region IMapServerToolAction Members

        public void ServerAction(ESRI.ArcGIS.ADF.Web.UI.WebControls.ToolEventArgs toolEventArgs)
        {
            // Get the map control on which the tool was executed
            ESRI.ArcGIS.ADF.Web.UI.WebControls.Map adfMap =
                (ESRI.ArcGIS.ADF.Web.UI.WebControls.Map)toolEventArgs.Control;

            try
            {
                #region Retrieve tool input parameters

                // Specify the URL to an ArcGIS Server geometry service.  This will be used to perform the 
                // buffer operation
                string geometryServiceUrl = "http://tasks.arcgisonline.com/arcgis/services/Geometry/GeometryServer";

                // Get the user-specified tool parameters specified via the page's interface
                System.Collections.Specialized.NameValueCollection inputParametersNameValueCollection = null;

                // Since the page is using the PartialPostback framework, and the controls receiving user
                // input are ASP.NET server controls, the tool parameters are automatically passed in
                // the page's request parameters.
                inputParametersNameValueCollection = adfMap.Page.Request.Params;
              

                // The tool's input parameters are stored in the name value collection with their keys as the
                // ID of the controls receiving the input
                string activeLayerName = inputParametersNameValueCollection["activeLayerDropDownList"];
                string bufferDistanceString = inputParametersNameValueCollection["bufferDistanceTextBox"];
                string units = inputParametersNameValueCollection["unitsDropDownList"];

                // Get the name of the resource on which to perform the selection from session.  This is
                // specified in Default's code-behind page.
                string targetResourceName = (string)adfMap.Page.Session["targetResourceName"];

                #endregion

                             
                #region Derive buffer input and execute buffer operation

                // Get a reference to the polygon drawn by the user as both a Web ADF and ArcGIS Server
                // SOAP polygon
                ESRI.ArcGIS.ADF.Web.UI.WebControls.MapPolygonEventArgs mapPolygonEventArgs =
                    toolEventArgs as ESRI.ArcGIS.ADF.Web.UI.WebControls.MapPolygonEventArgs;
                ESRI.ArcGIS.ADF.Web.Geometry.Polygon adfInputPolygon = mapPolygonEventArgs.MapPolygon;
                ESRI.ArcGIS.ADF.ArcGISServer.PolygonN agsSoapInputPolygon =
                    ESRI.ArcGIS.ADF.Web.DataSources.ArcGISServer.Converter.FromAdfPolygon(adfInputPolygon);

                // Get a reference to an ArcGIS Server Geometry service
                ESRI.ArcGIS.ADF.ArcGISServer.GeometryServerProxy geometryServerProxy =
                    new ESRI.ArcGIS.ADF.ArcGISServer.GeometryServerProxy(geometryServiceUrl);

                // Get a spatial reference in which to perform the buffer operation.  This spatial reference
                // is explicitly intialized based on the user-drawn polygon so that there is minimal projection
                // related buffer distortion
                ESRI.ArcGIS.ADF.ArcGISServer.SpatialReference agsSoapBufferSpatialReference =
                    Utility.CreateOperationSpatialReference(agsSoapInputPolygon, geometryServerProxy);

                // Use the units specified by the user to create an ArcGIS Server LinearUnit object
                ESRI.ArcGIS.ADF.ArcGISServer.LinearUnit agsSoapBufferUnits =
                    new ESRI.ArcGIS.ADF.ArcGISServer.LinearUnit();
                agsSoapBufferUnits.WKID = Utility.GetWkidByUnitName(units);
                agsSoapBufferUnits.WKIDSpecified = true;

                // Put the ArcGIS Server SOAP polygon in an ArcGIS Server SOAP geometry array to pass to the
                // buffer operation
                ESRI.ArcGIS.ADF.ArcGISServer.Geometry[] agsSoapSourceGeometryArray =
                    new ESRI.ArcGIS.ADF.ArcGISServer.Geometry[1];
                agsSoapSourceGeometryArray[0] = agsSoapInputPolygon as ESRI.ArcGIS.ADF.ArcGISServer.Geometry;

                // Get the user-specified buffer distance and put it in an array to pass to the buffer
                // operation.  If the user did not specify a distance, initialize the distance to zero.
                double bufferDistance;
                if (!double.TryParse(bufferDistanceString, out bufferDistance))
                    bufferDistance = 0;
                double[] bufferDistances = new double[1];
                bufferDistances[0] = bufferDistance;

                // Execute the buffer operation via the geometry service  
                ESRI.ArcGIS.ADF.ArcGISServer.Geometry[] agsBufferGeometryArray = geometryServerProxy.Buffer(
                    agsSoapInputPolygon.SpatialReference, agsSoapBufferSpatialReference, null, bufferDistances,
                    agsSoapBufferUnits, false, agsSoapSourceGeometryArray);

                #endregion

                //Check the geometryarray returned is not empty.
                if (agsBufferGeometryArray.GetLength(0) == 0)
                {
                    ESRI.ArcGIS.ADF.Web.UI.WebControls.CallbackResult noBufferDisAlertCallbackResult =
                        ESRI.ArcGIS.ADF.Web.UI.WebControls.CallbackResult.CreateJavaScript(
                        "alert('No features selected/buffered. Please verify buffer properties.')");
                    adfMap.CallbackResults.Add(noBufferDisAlertCallbackResult);

                    return;
                }

                #region Create buffer graphics and add to the map

                // Retrieve the buffer polygon from the array of result geometries
                ESRI.ArcGIS.ADF.ArcGISServer.PolygonN agsSoapBufferPolygon = agsBufferGeometryArray[0]
                    as ESRI.ArcGIS.ADF.ArcGISServer.PolygonN;

                // Create the fill symbol for the buffer
                ESRI.ArcGIS.ADF.ArcGISServer.SimpleFillSymbol agsSoapBufferSimpleFillSymbol =
                    Utility.CreateSimpleFillSymbol(System.Drawing.Color.Red,
                    ESRI.ArcGIS.ADF.ArcGISServer.esriSimpleFillStyle.esriSFSForwardDiagonal,
                    System.Drawing.Color.Black, 2);

                // Create a polygon graphic element for the buffer
                ESRI.ArcGIS.ADF.ArcGISServer.PolygonElement agsSoapBufferPolygonElement =
                    new ESRI.ArcGIS.ADF.ArcGISServer.PolygonElement();
                agsSoapBufferPolygonElement.Symbol = agsSoapBufferSimpleFillSymbol;
                agsSoapBufferPolygonElement.Polygon = agsSoapBufferPolygon;

                // Create the fill symbol for the input polygon
                ESRI.ArcGIS.ADF.ArcGISServer.SimpleFillSymbol agsSoapInputPolygonSimpleFillSymbol =
                    Utility.CreateSimpleFillSymbol(System.Drawing.Color.Cyan,
                    ESRI.ArcGIS.ADF.ArcGISServer.esriSimpleFillStyle.esriSFSSolid,
                    System.Drawing.Color.Red, 1);

                // Create a polygon graphic element for the input polygon
                ESRI.ArcGIS.ADF.ArcGISServer.PolygonElement agsSoapInputPolygonElement =
                    new ESRI.ArcGIS.ADF.ArcGISServer.PolygonElement();
                agsSoapInputPolygonElement.Symbol = agsSoapInputPolygonSimpleFillSymbol;
                agsSoapInputPolygonElement.Polygon = agsSoapInputPolygon;

                // Create an array of graphic elements to store the input polygon and buffer graphics
                ESRI.ArcGIS.ADF.ArcGISServer.GraphicElement[] agsSoapGraphicElementArray =
                    new ESRI.ArcGIS.ADF.ArcGISServer.GraphicElement[2];
                agsSoapGraphicElementArray[0] = agsSoapBufferPolygonElement;
                agsSoapGraphicElementArray[1] = agsSoapInputPolygonElement;

                // Get a reference to the target resource's ArcGIS Server data-source specific map functionality
                ESRI.ArcGIS.ADF.Web.DataSources.ArcGISServer.MapFunctionality agsMapFunctionality =
                    (ESRI.ArcGIS.ADF.Web.DataSources.ArcGISServer.MapFunctionality)adfMap.GetFunctionality(
                    targetResourceName);

                // Place the graphics on the map by assigning the element array to the custom graphics
                // property of the resource's map description
                ESRI.ArcGIS.ADF.ArcGISServer.MapDescription agsSoapMapDescription =
                    agsMapFunctionality.MapDescription;
                agsSoapMapDescription.CustomGraphics = agsSoapGraphicElementArray;

                #endregion

                #region Select features that intersect the buffer

                // Call method to set the active layer's selected features to those intersecting the buffer
                Utility.SelectIntersectingFeatures(agsMapFunctionality, agsSoapBufferPolygon, activeLayerName,
                    System.Drawing.Color.Yellow);

                // Refresh the target resource so the changes are displayed
                adfMap.RefreshResource(targetResourceName);

                #endregion
            }
            catch (System.Exception exception)
            {
                ESRI.ArcGIS.ADF.Web.UI.WebControls.CallbackResult errorCallbackResult =
                    Utility.CreateErrorCallbackResult(exception);
                adfMap.CallbackResults.Add(errorCallbackResult);
            }
        }

        #endregion
    }

    public class SelectTool : ESRI.ArcGIS.ADF.Web.UI.WebControls.Tools.IMapServerToolAction
    {
        #region IMapServerToolAction Members

        public void ServerAction(ESRI.ArcGIS.ADF.Web.UI.WebControls.ToolEventArgs toolEventArgs)
        {
            // Get the map control on which the tool was executed
            ESRI.ArcGIS.ADF.Web.UI.WebControls.Map adfMap =
                (ESRI.ArcGIS.ADF.Web.UI.WebControls.Map)toolEventArgs.Control;

            try
            {
                // Get the user-specified tool parameters specified via the page's interface
                System.Collections.Specialized.NameValueCollection inputParametersNameValueCollection = null;
                // Since the page is using the PartialPostback framework, and the controls receiving user
                // input are ASP.NET server controls, the tool parameters are automatically passed in
                // the page's request parameters.
                inputParametersNameValueCollection = adfMap.Page.Request.Params;
             

                // The tool's input parameters are stored in the name value collection with their keys as the
                // ID of the controls receiving the input
                string activeLayerName = inputParametersNameValueCollection["activeLayerDropDownList"];

                // Get the name of the resource on which to perform the selection from session.  This is
                // specified in Default's code-behind page.
                string targetResourceName = (string)adfMap.Page.Session["targetResourceName"];

                // Get a reference to the user-drawn rectangle as an ArcGIS Server SOAP envelope
                ESRI.ArcGIS.ADF.Web.UI.WebControls.MapRectangleEventArgs mapRectangleEventArgs =
                    toolEventArgs as ESRI.ArcGIS.ADF.Web.UI.WebControls.MapRectangleEventArgs;
                ESRI.ArcGIS.ADF.ArcGISServer.EnvelopeN agsSoapInputEnvelope =
                    ESRI.ArcGIS.ADF.Web.DataSources.ArcGISServer.Converter.FromAdfEnvelope(
                    mapRectangleEventArgs.MapExtent);

                // Get the map functionality for the target resource
                ESRI.ArcGIS.ADF.Web.DataSources.ArcGISServer.MapFunctionality agsMapFunctionality =
                    adfMap.GetFunctionality(targetResourceName) as
                    ESRI.ArcGIS.ADF.Web.DataSources.ArcGISServer.MapFunctionality;

                // Call method to set the active layer's selected features to those intersecting the user-drawn
                // rectangle
                Utility.SelectIntersectingFeatures(agsMapFunctionality, agsSoapInputEnvelope, activeLayerName,
                    System.Drawing.Color.Yellow);

                // Refresh the target resource so the new selection is displayed
                adfMap.RefreshResource(targetResourceName);
            }
            catch (System.Exception exception)
            {
                ESRI.ArcGIS.ADF.Web.UI.WebControls.CallbackResult errorCallbackResult =
                    Utility.CreateErrorCallbackResult(exception);
                adfMap.CallbackResults.Add(errorCallbackResult);
            }
        }

        #endregion
    }
}