// 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.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

public partial class Default : System.Web.UI.Page
{
    #region Instance Variable Declarations

    private string _ADFCallbackFunctionString;
    private string _callbackResults = "";
    

    #endregion

    #region ASP.NET Page Event Handlers

    protected void Page_Load(object sender, System.EventArgs e)
    {
        ScriptManager1.RegisterAsyncPostBackControl(btnClearSelection);
        ScriptManager1.RegisterAsyncPostBackControl(chkSelectionInTable);
        btnClearSelection.Click += new EventHandler(btnClearSelection_Click);
    }

   protected void Page_PreRender(object sender, System.EventArgs e)
    {
        // Make sure the page is not in a postback
        if (!ScriptManager1.IsInAsyncPostBack)
        {
            try
            {
                // Get a reference to the Data Layers GIS Resource
                ESRI.ArcGIS.ADF.Web.DataSources.IMapFunctionality commonMapFunctionality =
                    Map1.GetFunctionality("Data Layers");
                ESRI.ArcGIS.ADF.Web.DataSources.IGISResource gisResource = commonMapFunctionality.Resource;

                // Get an object to query the resource
                ESRI.ArcGIS.ADF.Web.DataSources.IQueryFunctionality commonQueryFunctionality =
                    (ESRI.ArcGIS.ADF.Web.DataSources.IQueryFunctionality)gisResource.CreateFunctionality(
                    typeof(ESRI.ArcGIS.ADF.Web.DataSources.IQueryFunctionality), null);

                // Use the query functionality to get the queryable layer names and ids from the resource
                string[] layerIDs;
                string[] layerNames;
                commonQueryFunctionality.GetQueryableLayers(null, out layerIDs, out layerNames);

                // Add the names of the queryable layers to the selection layer drop-down
                for (int i = 0; i < layerNames.Length; i++)
                {
                    ddlSelectionLayer.Items.Add(layerNames[i]);
                }
                // Set the session variable storing the current selection layer to the first layer
                // name in the selection layer drop-down
                Session["SelectionLayer"] = ddlSelectionLayer.Items[0].Value;

                Toc1.NodeSelectionUpdateControls.Add(ddlSelectionLayer.ClientID);
            }
            catch (System.Exception exception)
            {
                string jsAlertErrorMessage = string.Format("<script>{0}</script>",
                    CustomComponents.Utility.GetJavaScriptErrorString(exception));
                Response.Write(jsAlertErrorMessage);
            }
        }
    }

    #endregion
    
    #region Instance Methods

    public void ClearSelection()
    {
        try
        {
            // Retrieve and clear the graphics of the Buffer and Selection resources.
            ESRI.ArcGIS.ADF.Web.DataSources.IGISFunctionality gisFunctionality =
                Map1.GetFunctionality("Buffer");
            ESRI.ArcGIS.ADF.Web.DataSources.Graphics.MapResource graphicsMapResource =
                gisFunctionality.Resource as ESRI.ArcGIS.ADF.Web.DataSources.Graphics.MapResource;
            graphicsMapResource.Graphics.Clear();
            Map1.RefreshResource(graphicsMapResource.Name);

            gisFunctionality = Map1.GetFunctionality("Selection");
            graphicsMapResource = gisFunctionality.Resource as
                ESRI.ArcGIS.ADF.Web.DataSources.Graphics.MapResource;
            graphicsMapResource.Graphics.Clear();
            Map1.RefreshResource(graphicsMapResource.Name);

            //Hide the grid
            grdSelectionResults.Visible = false;
            UpdatePanel1.Update();

            //Disable the checkbox for displaying selection
            string jsEnableCheckbox = string.Format("document.getElementById('{0}').checked = false",
                       "chkSelectionInTable");
            ESRI.ArcGIS.ADF.Web.UI.WebControls.CallbackResult CheckboxCallbackResultselection =
                ESRI.ArcGIS.ADF.Web.UI.WebControls.CallbackResult.CreateJavaScript(jsEnableCheckbox);
                        
            Map1.CallbackResults.Add(CheckboxCallbackResultselection);

            // Set the callback results to those of the map.  These will be returned to the client and
            // processed by processCallbackResult.
            _callbackResults = Map1.CallbackResults.ToString();
        }
        catch (System.Exception exception)
        {
            ESRI.ArcGIS.ADF.Web.UI.WebControls.CallbackResult errorCallbackResult =
                CustomComponents.Utility.GetErrorCallback(exception);
            ESRI.ArcGIS.ADF.Web.UI.WebControls.CallbackResultCollection errorCallbackResultCollection =
                new ESRI.ArcGIS.ADF.Web.UI.WebControls.CallbackResultCollection();
            errorCallbackResultCollection.Add(errorCallbackResult);
            _callbackResults = errorCallbackResultCollection.ToString();
        }
        finally
        {
            ScriptManager1.RegisterDataItem(Page, _callbackResults.ToString(), false);
        }
    }

    #endregion

    #region ASP.NET Web ADF Controls
    void btnClearSelection_Click(object sender, EventArgs e)
    {
        ClearSelection();
    }
    #endregion
}