// 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.
// 

using System;
using System.Collections.Generic;
using System.Text;

namespace FindNearTask_CSharp
{
    // Manages task input parameters
    internal class InputParameters
    {
        // Array to store input geometries.  Used when the user wants to combine geometries.
        private ESRI.ArcGIS.ADF.Web.Geometry.Geometry[] _userInputGeometries = null;

        // Name of the map resource containing the layer to search
        public string SearchResource = null;
        // Name of the layer to search
        public string SearchLayer = null;
        // Search distance
        public float SearchDistance = 1000;
        // Search units
        public string Units = null;
        // Search geometry.  This is the user input geometries buffered by the search distance.
        public ESRI.ArcGIS.ADF.Web.Geometry.Geometry BufferGeometry = null;
        // Whether or not to combine new input geometries with those previously defined
        public bool AddToInputGeometry = true;

        // Provides read access to the geometries to search near, as defined by the user
        public ESRI.ArcGIS.ADF.Web.Geometry.Geometry[] UserInputGeometries
        {
            get { return _userInputGeometries; }
        }

        // Defines the geometries to search near.  If AddToInputGeometry is true, the passed-in geometries
        // are combined with those already defined.  Otherwise, the defined input geometries are overwritten.
        public void SetUserInputGeometries(ESRI.ArcGIS.ADF.Web.Geometry.Geometry[] inputGeometries)
        {
            // Check whether to combine the passed-in geometries with those already defined
            if (this.AddToInputGeometry && _userInputGeometries != null)
            {
                // Create a new geometry array that's large enough to hold both the defined geometries and those
                // passed-in
                ESRI.ArcGIS.ADF.Web.Geometry.Geometry[] combinedGeometries =
                    new ESRI.ArcGIS.ADF.Web.Geometry.Geometry[inputGeometries.Length + _userInputGeometries.Length];

                // Copy the previously defined geometries to the new array
                _userInputGeometries.CopyTo(combinedGeometries, 0);
                // Add the passed-in geometries to the end of the new array
                for (int i = _userInputGeometries.Length; i < combinedGeometries.Length; i++)
                    combinedGeometries[i] = inputGeometries[i - _userInputGeometries.Length];

                // Overwrite the previous geometry array with the combined array
                _userInputGeometries = combinedGeometries;
            }
            else
            {
                // Overwrite the previous geometry array or initialize it with the passed-in array
                _userInputGeometries = inputGeometries;
            }
        }
    }
}